AU2018253579B2 - Foodstuff cooking apparatus - Google Patents

Abstract

A foodstuff cooking apparatus comprising a heating chamber and a retainer is described. The heating chamber contains the foodstuff and comprises at least one opening for entrance and exit of the foodstuff and at least one fenestration which is exposed by detaching a removable section of the chamber. The fenestration allows direct heat transfer to a retainer. The retainer is disposed internally of the chamber, holds the foodstuff and is removably attached to a connection on the chamber. The cooking apparatus also has a retainer handle and a chamber handle. The cooking apparatus may have other components such as, a closure for sealing the at least one opening. A method for manufacturing the foodstuff cooking apparatus, a method for cooking a foodstuff and a foodstuff cooked according to the method are also described. Advantageously, the apparatus or method may use a domestic gas heat source and do not require electricity. 30a

Description

FOODSTUFF COOKING APPARATUS

FIELD OF THE INVENTION [0001] The present invention relates to a foodstuff cooking apparatus. More particularly, this invention relates to a portable multifunction foodstuff cooking apparatus that may use a domestic gas heat source.

BACKGROUND TO THE INVENTION [0002] Many modern cookery appliances rely on a source of electricity. This means they can not be used in many parts of the world where there is no reliable electricity source. This may be an ongoing reality for many rural or developing areas or may be a consequence of a natural or other disaster.

[0003] Additionally, these electronic cooking apparatus can not be used when travelling or camping.

[0004] Cooking includes many techniques such as, baking, boiling, frying, steaming, toasting, smoking, roasting, slow cooking, pressure cooking, popping and puffing of grains.

[0005] Irrespective of the method of cooking, many people in remote areas, low socioeconomic regions, or those simply displaced may be limited to basic methods of cooking simply as a result of cost, space or availability.

[0006] For example, puffing foodstuffs can not readily be done in a household setting. There are two main ways to puff foodstuffs like grains such as, wheat, barely, millet etc. The majority of “puffed grains” such as puffed rice breakfast cereal and bran flakes are made using extrusion technology which moulds the meal or liquid meal paste into shape. The other method uses pressure to naturally puff the grains.

[0007] Devices that currently produce naturally puffed grains under pressure are commercial by nature. They are extremely bulky, heavy and generally unpractical and uneconomical to utilize in a commercial kitchen or home as they require large open and ventilated space, an open flame and are typically fuelled by a liquid petroleum gas (LPG) tank connected to a flame device, or coal. Additionally, caution must be taken given the nature of the device.

[0008] There is a greater trend towards organic foods, yet many commercial businesses still do not offer a great level of organic cuisine. The is a need for consumers to be able to purchase free range grain feed chicken and produce an equivalent charcoal chicken at home.

-22018253579 25 Oct 2018 [0009] Similarly, the ability to apply this to a whole host of foods such as beef, lamb, pork, nuts, coffee etc. would allow the consumer more flexibility in everyday food preparation.

[0010] United States Patent No.: 6220152 to Bladwin and Lobelio discloses a barbeque rotisserie enclosure that has a hollow vessel including a hollow cylinder having a first closed end and a second open end, the second open end for placing food into the cylinder. A baffle is housed concentrically within and adjacent to an inner surface of the cylinder to prevent direct contact of flames with the food and substantially prevent direct contact of liquids emanating from the food with the heat source.

[0011] United States Patent Application Publication No.: 2011/0030670 to Ding Yu Tan teaches a portable anti-scorching roasting can including a can body, at least one segregating cage, a cover, a pivoting element and a handle. The segregating cage located in the containing space is used to contain the foodstuff. The pivoting element is located between the cover and the can body. The can body has a discharge hole so grease from the foodstuff can escape.

[0012] United States Patent No.: 216132 to Atkinson illustrates a combined oven-door and roaster that has a heating chamber, a basket with two handles extending on the same side.

[0013] United States Patent No.: 305725 to Wade, Yuncker and Clouse describes a coffee-roaster for use on a stove. The roaster has a handle and a conical top and bottom. There is a solid bottom with perforations near the top and an upper edge turned out in a flange forming a hot air chamber. A shaft is pivoted in the bottom. Attached to the shaft is a paddle or agitator with forward-curved ends and backward, outward and inward curved wings. Operation of the paddle carries coffee from the centre outward and from the extreme outside toward the centre. There is window of mica, glass or other transparent material [0014] There remains a need for alternative means of cooking foodstuffs not just in the example of producing puffed foodstuffs.

[0015] The reference to any prior art in this specification is not, and should not be taken as, an acknowledgement or any form of suggestion that the prior art forms part of the common general knowledge.

2018253579 25 Oct 2018

-3 SUMMARY OF THE INVENTION [0016] Generally, embodiments of the present invention relate to a foodstuff cooking apparatus. More particularly, this invention relates to a portable multifunction foodstuff cooking apparatus that may use a domestic gas heat source.

[0017] One particular advantage of the present invention is that it does not require electricity or comprise electrical componentry.

[0018] In a first form, although it need not be on the only or indeed the broadest form, the invention resides in a foodstuff cooking apparatus comprising:

a heating chamber for containing the foodstuff to be cooked, the heating chamber comprising at least one opening for entrance and exit of the foodstuff to be cooked and at least one fenestration, the fenestration exposed by detaching a removable section of the heating chamber, the fenestration allowing direct heat transfer to a retainer;

the retainer disposed internally of the heating chamber, the retainer for holding the foodstuff wherein the retainer is removably attached to a connection on the heating chamber;

a retainer handle extending from the retainer; and a chamber handle extending from the heating chamber.

[0019] The apparatus of the first form may further comprise a closure for sealing the at least one opening. The closure may comprise a cap covering the at least one opening. The closure may be comprised on the retainer.

[0020] In a second form, the invention resides in a method for manufacturing a foodstuff cooking apparatus according to the first form.

[0021] In a third form, the invention resides in a method for manufacturing a foodstuff cooking apparatus comprising:

manufacturing a heating chamber for containing the foodstuff to be cooked, the heating chamber comprising at least one opening for entrance and exit of the foodstuff to be cooked, at least one fenestration, a connection for attachment of a retainer and the heating chamber comprising a chamber handle extending therefrom; and manufacturing the retainer for internal disposal within the heating chamber, the retainer for holding the foodstuff and wherein the retainer comprises a retainer handle extending therefrom; and wherein the fenestration is exposed by detaching a removable section of the heating chamber, the fenestration allowing direct heat transfer to the retainer.

-42018253579 25 Oct 2018 [0022] The retainer according to the third form may further comprise a closure for sealing the at least one opening. The closure may comprise a cap covering the at least one opening.

The closure may be comprised on the retainer.

[0023] In a fourth form, the invention resides in a method for cooking a foodstuff comprising cooking the foodstuff in the apparatus of the first form.

[0024] In a fifth form, the invention resides in a foodstuff cooked according to the method of the fourth form or cooked with the apparatus of the first form.

[0025] In one embodiment of any one of the first to fifth forms, the apparatus may be operated to cook the foodstuff with a domestic gas heat source. The domestic gas heat source may comprise a gas stove or a portable gas stove such as, a gas cartridge stove.

[0026] In another embodiment of any one of the first to fifth forms, the apparatus may be operated to cook the foodstuff without electricity or without a source of electricity. The apparatus may not comprise any electrical components.

[0027] In yet another embodiment of any one of the first to fifth forms, the retainer may be rotated by turning the retainer handler. The rotation of the retainer may be independent of the heating chamber.

[0028] In still another embodiment of any one of the first to fifth forms, the retainer may further comprise a basket. The basket may be configured to be inserted into the heating chamber. The basket may comprise a plurality of orifices for material to fall through. The basket may comprise a mesh basket. The basket may be attached or attachable to the retainer. The attachment of the mesh basket to the retainer may be such that removing the retainer also removes the basket from the heating chamber. Rotation of the retainer handle may rotate the basket.

[0029] According to any one of the first to fifth forms, the retainer and/or heating chamber may comprise one or more window. The retainer window and/or heating chamber window may comprise a transparent or translucent covering or pane.

[0030] In one embodiment of any one of the first to fifth forms, the heating chamber may comprise one or more hinge. The one or more hinge may be positioned at a back of the heating chamber. The one or more hinge may be disposed to allow opening of the chamber by pivoting one section of the heating chamber attached to the one or more hinge.

[0031] In another embodiment of any one of the first to fifth forms, the heating chamber may further comprise said removable section.

[0032] In another embodiment of any one of the first to fifth forms, the retainer may comprise a rotisserie. The rotisserie may be attached or attachable to the retainer. The

-5 2018253579 25 Oct 2018 rotisserie may be rotated by turning the retainer handle. An automated device may be attached to the retainer handle to automatically turn the retainer handle and consequently the rotisserie.

[0033] According to any one of the first to fifth forms, the rotisserie may comprise one or more skewer. The one or more skewer may comprise a central skewer extending from the retainer and attaching to the heating chamber. The rotisserie may also comprise one or more peripheral skewers. The rotisserie may also comprise opposing holders.

[0034] According to any one of the first to fifth forms, the connection on the heating chamber may be disposed at an opposing end of the heating chamber to the one or more opening.

[0035] The retainer or cap according to any one of the first to fifth forms may comprise one or more vent. The vent may be opened to ventilate the heating chamber.

[0036] In yet another embodiment of any one of the first to fifth forms, the retainer may further comprise an internal chamber that is inserted into and abuts the heating chamber. The internal chamber may comprise a continuous or substantially continuous outer wall. The abutment may be across all or substantially all of the internal chamber outer surface. The internal chamber may be attached or attachable to the retainer. The internal chamber may be rotated by turning the retainer handle. The internal chamber may comprise a retainer removable section. The retainer removable section may cover a retainer fenestration. The retainer removable section may comprise a solid floor upon which woodchips or other material for smoking the foodstuff may be disposed.

[0037] Advantageously, the retainer fenestration may allow direct heat transfer to the retainer and/or inside the retainer. The direct heat transfer allowed may be sufficient to cook the foodstuff. The retainer fenestration may be revealed by detaching a removable section of the heating chamber.

[0038] The retainer or cap according to any one of the first to fifth forms may seal one end of the heating chamber.

[0039] According to any one of the first to fifth forms, the retainer handle may extend from an opposite end of the heating chamber than the heating chamber handle.

[0040] In one embodiment of any one of the first to fifth forms, the retainer may further comprise one or more baffle and/or fin to assist mixing of the foodstuff. The one or more baffle and/or fin may be removable.

[0041] According to any one of the first to fifth forms, the retainer handle and the chamber handle may be elongate.

-62018253579 25 Oct 2018 [0042] According to any one of the first to fifth forms, the heating chamber may be tubular. The tubular heating chamber may comprise a circular cross-section.

[0043] According to any one of the first to fifth forms, one or both of the retainer handle and chamber handle may be eccentrically positioned. The eccentric positioning may allow rotation of the chamber and/or retainer by turning one or both of the retainer handle and the chamber handle.

[0044] According to any one of the first to fifth forms, a safety valve may be comprised to automatically release pressure when a preset limit is reached.

[0045] In a sixth form, although it need not be the only or indeed the broadest form, the invention resides in a foodstuff puffing apparatus comprising:

a heating chamber for containing the foodstuff to be puffed, the heating chamber comprising at least one opening for entrance and exit of the foodstuff to be puffed; a closure for sealing the at least one opening; and a safety valve to automatically release pressure when a preset limit is reached.

[0046] In a seventh form the invention resides in a method for puffing a foodstuff comprising:

sealing a heating chamber comprising a foodstuff to be puffed;

heating the foodstuff to be puffed inside the heating chamber; and automatically releasing pressure when a preset limit is reached.

[0047] The apparatus of the sixth form or the method of the seventh form may further comprise an agitator. The agitator may comprise a roasting jack.

[0048] In another embodiment the agitator may comprise an air blower configured to create airflow within the heating chamber to move the foodstuff to be puffed inside the heating chamber.

[0049] According to any one of the above forms, the safety valve may comprise a pressure release valve which automatically releases fluid from the heating chamber when the pressure or temperature exceeds a preset limit.

[0050] The preset limit may comprise 1.4 MPa or 200psi. The preset limit may be within 1.0 and 2.0 mPa or between 140 and 300 psi. The present limit may comprise 1.1; 1.2; 1.3; 1.4; 1.5; 1.6; 1.7; 1.8; 1.9; 2.0 or 140; 150; 160; 170; 180; 190; 200; 210; 220; 230; 240; 250; 260; 270; 280; 290; or 300 psi.

[0051] According to any one of the above forms, the closure may comprise a lid. The lid may comprise a mating component which interfits with a complementary mating component on the heating chamber.

2018253579 25 Oct 2018

-7[0052] According to any one of the above forms, the seal may comprise an airtight seal.

[0053] The apparatus or method according to any one of the above forms may further comprise a pressure gauge for displaying the pressure inside the heating chamber. The pressure gauge may comprise an analogue or digital pressure gauge.

[0054] The apparatus or method according to any one of the above forms may further comprise a mechanical or electronic device for releasing the pressure by operating the closure or otherwise allowing fluid to escape from the heating chamber.

[0055] The apparatus of the sixth form or the method of the seventh form may further comprise a handle. The handle may be gripped by a user to agitate the heating chamber and thereby the foodstuff to be puffed.

[0056] The apparatus or method according to any one of the above forms may further comprise a stand for positioning the apparatus over a heat source. The stand may comprise one or more feet. The feet may be made of rubber. The stand may further comprise one or more rod. The stand may comprise four rods in a quadrilateral arrangement. The stand may comprise a circular shape, a triangular shape, a pentagonal shape, a hexagonal shape or a higher order shape. The stand may comprise one or more sets of extendible parallel rods or all rods may be extendable. The extendable rods may be telescopic rods. The stand may be provided as an integral component or may require assembly.

[0057] The stand may be configured to fit over a gas hob or trivet.

[0058] The heat source according to any one of the above forms may comprise a gas stove. The gas stove may comprise a portable gas stove such as a gas cartridge stove.

[0059] The heating chamber according to any one of the above forms may be comprised of one or more of a metal, pottery and coated and composite cookware material. The metal may comprise steel, iron, or stainless steel.

[0060] The heating chamber and/or retainer according to any one of the above forms may comprise a non-stick internal surface. The non-stick internal surface may comprise Teflon.

[0061] The foodstuff to be puffed according to any one of the above forms may comprise one or more of a cereal and a non-cereal foodstuff. The cereal may comprise one or more barley; khorasan wheat; maize/corn; millet; oat; rice; sorghum; spelt; wheat. The noncereal foodstuff may comprise one or more of amaranth; buckwheat; makhana; quinoa; and soybean.

[0062] The foodstuff to be puffed according to any one of the above forms may be used to make one or more puffed foodstuff product. The puffed foodstuff product may comprise one or more of a breakfast cereal; alegria; bhelpuri; bamba; golden crisp; puffed rice;

-82018253579 25 Oct 2018 honey smacks; toffee crisp (rice); pufarine (wheat); puffed dough foods; corn puff; cheese puffs; kix (breakfast cereal).

[0063] In an eighth form the invention resides in a puffed foodstuff produced with the apparatus of the sixth form or according to the method of the seventh form.

[0064] In a ninth form the invention resides in a puffed foodstuff product produced from a puffed foodstuff produced with the apparatus of the sixth form or according to the method of the seventh form.

[0065] In a tenth form the invention resides in an apparatus of the sixth form when used as a domestic pressure cooker. The domestic pressure cooker may be used at 15 psi.

[0066] In an eleventh form the invention resides in a kit comprising the apparatus according to the first form. The kit may further one or more of said removable section of the heating chamber, one or more, or two or more retainers; and said closure for sealing the at least one opening.

[0067] Further aspects and/or features of the present invention will become apparent from the following detailed description.

BRIEF DESCRIPTION OF THE DRAWINGS [0068] In order that the invention may be readily understood and put into practical effect, reference will now be made to embodiments of the present invention with reference to the accompanying drawings, wherein like reference numbers refer to identical elements. The drawings are provided by way of example only, wherein:

[0069] Fig. 1 is a plan view of one embodiment of an apparatus according to the invention.

[0070] Fig. 2 is a schematic diagram showing one embodiment of a stand according to the invention.

[0071] Figs. 3A, 3B, 3C, 3D, 3E, 3F and 3G show perspective views of an apparatus according to another embodiment of the invention.

[0072] Skilled addressees will appreciate that elements in the drawings are illustrated for simplicity and clarity and have not necessarily been drawn to scale. For example, the relative dimensions of some elements in the drawings may be distorted to help improve understanding of embodiments of the present invention.

DETAILED DESCRIPTION OF THE INVENTION [0073] Embodiments of the present invention relate to a foodstuff cooking apparatus and a method for cooking a foodstuff. In one embodiment, the apparatus and methods provide a

-92018253579 25 Oct 2018 heating chamber comprising at least one opening for entrance and exit of the foodstuff to be cooked and at least one fenestration allowing direct heat transfer to a retainer disposed or arranged internally of the heating chamber and which holds the foodstuff.

[0074] In another embodiment the apparatus and method utilize a safety pressure release valve.

[0075] The foodstuff cooking apparatus and methods may also use a domestic gas heat source.

[0076] In one embodiment, the invention provides a foodstuff puffing apparatus which will be described below with reference to FIG. 1 and FIG. 2. Thereafter another embodiment of the invention, which provides a foodstuff cooking apparatus 300 is described.

[0077] One embodiment of a foodstuff puffing apparatus 100 according to the invention is shown in FIG. 1. Apparatus 100 comprises a heating chamber 120 for containing the foodstuff to be puffed. The heating chamber 120 comprises an opening 122 for entrance and exit of the foodstuff to be puffed.

[0078] To apply an airtight seal to heating chamber 120, apparatus 100 also comprises a closure 140 for covering the opening 122. In the embodiment shown in FIG. 1, closure 140 is in the form of a lid.

[0079] The closure 140 comprises a mating component 142 which interfits with a complementary mating component 124 on heating chamber 120.

[0080] Apparatus 100 also comprises a safety valve 160 to automatically release pressure when a preset limit is reached. Safety valve 160 is of considerable advantage when used in a household setting as it provides a valuable safety aspect eliminating or greatly reducing any risk of injury due to too great a pressure or heat being reached.

[0081] Apparatus 100 is also shown to comprise handle 102 which may be gripped by a user to agitate the heating chamber 120 and thereby the foodstuff to be puffed. Handle 102 may also be used to grip apparatus 100 to move it in and out of storage.

[0082] FIG. 1 shows apparatus 100 on a stand 180. This stand 180 is best shown in FIG. 2. Stand 180 may be used for positioning apparatus 100 over a heat source such as a gas stove, including a domestic gas stove and a portable gas stove such as, a gas cartridge stove.

[0083] Stand 180 comprises rubber feet 182 for securely supporting apparatus 100 on a surface.

-102018253579 25 Oct 2018 [0084] Stand 180 also comprise rods 184 to provide a stable platform for supporting apparatus 100. In the embodiment shown, stand 180 comprises four rods 184 in a quadrilateral arrangement. Other embodiments may use other arrangements, such as circular, triangular, pentagonal, hexagonal and higher order shapes.

[0085] In the embodiment shown in FIG. 2, rods 184 are adjustable to allow alteration of the size of the stand 180 to fit the heat source. Where appropriate, two or more sets of parallel rods 184 may be extendable. In other arrangements, all rods 184 may be extendable. The extendable rods 184 may be telescopic rods.

[0086] In order to achieve more even heating and avoid sticking to the interior surface of heating chamber 120, apparatus 100 may further comprise an agitator 190. In one embodiment the agitator 190 may comprise an automatic agitator such as, a roasting jack (not shown) and apparatus 100 may comprise fittings (not shown) for attachment to the roasting jack.

[0087] Apparatus 100 shown in FIG. 1, can be agitated by a user gripping handle 102. In this manner, handle 102 takes the form of agitator 190.

[0088] In another embodiment, agitator 190 may comprise an air blower configured to create airflow within heating chamber 120 to move the foodstuff to be puffed inside heating chamber 120.

[0089] Safety valve 160 may comprise a pressure release valve which automatically releases fluid from the heating chamber when the pressure or temperature exceeds a preset limit. Ordinarily, the fluid released will be air, however some fluid may also be released.

[0090] The preset limit may comprise 1.4 MPa or 200psi. From the teaching herein a skilled person is readily able to select other preset limits suitable for the apparatus 100 and method 200. For example, the preset limit may be within 1.0 and 2.0 mPa or between 140 and 300 psi. The present limit may comprise 1.1; 1.2; 1.3; 1.4; 1.5; 1.6; 1.7; 1.8; 1.9; 2.0 or 140; 150; 160; 170; 180; 190; 200; 210; 220; 230; 240; 250; 260; 270; 280; 290; or 300 psi.

[0091] Apparatus 100 further comprises a pressure gauge 104 for displaying the pressure inside heating chamber 120. While FIG. 1 shows an analogue pressure gauge 104, in other embodiments it may be digital.

[0092] Once the pressure has reached its desired level, as displayed on pressure gauge 104, a user may open heating chamber 120 and thereby cause the foodstuff to puff as the pressure is released. Heating chamber 120 may be opened by applying a mild force to the closure 140 to gradually release pressure. Alternatively, a mechanical or electronic device

-11 2018253579 25 Oct 2018 (not shown) may release the pressure by operating closure 140 or otherwise allowing fluid to escape from heating chamber 120. Should the user be absent, the pressure release valve will in effect reduce the pressure within the heating chamber 120.

[0093] The invention also provides a method 200 for puffing a foodstuff. Method 200 comprising sealing 202 a heating chamber comprising a foodstuff to be puffed. Method 200 also comprises heating 204 the foodstuff to be puffed inside the heating chamber. Method 200 further comprises automatically releasing 206 pressure when a preset limit is reached.

[0094] The foodstuff to be puffed may comprise one or more of a cereal and a non-cereal foodstuff. The cereal may comprise one or more barley; khorasan wheat; maize/corn; millet; oat; rice; sorghum; spelt; wheat. The non-cereal foodstuff may comprise one or more of amaranth; buckwheat; makhana; quinoa; and soybean.

[0095] The puffed foodstuff produced with the apparatus 100 or method 200 may be consumed as is or may be further processed into a puffed foodstuff product.

[0096] The foodstuff to be puffed may be used to make one or more puffed foodstuff product. The puffed foodstuff product may comprise one or more of a breakfast cereal; alegria; bhelpuri; bamba; golden crisp; puffed rice; honey smacks; toffee crisp (rice); pufarine (wheat); puffed dough foods; corn puff; cheese puffs; kix (breakfast cereal).

[0097] The khorasan wheat may be sold under the brand name Kamut, [0098] FIGS. 3A, 3B, 3C, 3D, 3E, 3F and 3F show another embodiment of a cooking apparatus 300 according to the invention. Advantageously, apparatus 300 is versatile enough so that a user can add further functionality with additional components such as, retainers 340, without adversely impacting the range of uses.

[0099] Apparatus 300 also comprises a heating chamber 320 which is hollow and has a chamber handle 328 integral or attached thereto. Chamber handle 328 may be the main handle used for rotating.

[00100] Advantageously, different cooking methods may be used by inserting a smaller retainer 340, chamber and/or device, such as basket 350, internal chamber 352 and rotisserie 354, into the hollow drum of heating chamber 320. As will be elucidated below, each of these smaller retainers 340, chambers and/or devices may be provided with their own gripping handle, retainer handle 348, disposed so that when the retainers 340, chambers and/or devices are inserted, the retainer handle 348 is positioned at the opposite end to the chamber handle 328.

- 122018253579 25 Oct 2018 [00101] Heating chamber 320 comprises a connection 336, shown in FIG. 3E, inside the hollow drum which allows the smaller retainers 340, cooking chambers and/or devices to be secured or locked into place once they enter the heating chamber 320. Connection 336 is disposed at an opposing end of the heating chamber 320 to the one or more opening 322.

Connection 336 is on the inner surface of heating chamber 320.

[00102] The securing or locking into place is achieved by connection 336 mating with a complementary connection 346 (not shown) disposed on the smaller retainers 340, cooking chambers and/or devices. Connection 346 is disposed at one end of retainer 340. Connections 336, 346 allow rotation via heating chamber handle 328. Accordingly, when handle 328 is rotated, the smaller retainer 340, cooking chamber and/or device also rotates. Alternatively, when retainer handle 348 is rotated, retainer 340 may be rotated independently on chamber 320. Retainer handle 348 is at the opposite end of retainer 340 to connection 346.

[00103] When inserted, the cap 341 of each of the different retainers 340, smaller cooking chambers and/or devices seals the open end of the heating chamber 320. That is, while retainers 340 are shown with caps 341, in other embodiments, retainers 340 do not comprise a cap 341 at the end. This is of significant advantage when smoking or as a rotisserie. The lock-in feature of connections 336, 346 describe allow retainers 340 to be secured without a cap 341. If no retainer 340 is inserted the heating chamber 320 is completely hollow with a full circular opening at the opposite end to the main rotating handle 328.

[00104] In another form, when the different smaller retainers 340, cooking chambers and/or devices are inserted the seal may not be absolute so that the rim space between the cap 341 of the retainer 340, smaller cooking chamber and/or device and the heating chamber 320 acts as an alternative ventilation.

[00105] Apparatus 300 may be referred to as a multifunction cooking apparatus for the reason that it may cook foodstuffs using multiple techniques. Cooking techniques that may be performed with apparatus 300 include, baking, boiling, frying, steaming, toasting, smoking, roasting, slow cooking, pressure cooking, popping and puffing of grains.

[00106] Apparatus 300 may be used to toast any foodstuff such as, one or more of dried coconut; almond flakes; seeds; and grains. Apparatus 300 may be used to smoke a foodstuff such as, a meat. The meat may comprise one or more of chicken; fish or other seafood; beef; lamb; and venison. The other seafood may comprise a shellfish. The foodstuff being smoked may be suspended inside the heating chamber 320. Apparatus 300

- 13 2018253579 25 Oct 2018 may also be used to cook and/or slow cook a foodstuff easily. The foodstuff cooked and/or slow cooked may comprise one or more of a stew, a casserole, a tandoor and a rotisserie.

Apparatus 300 may also be used to roast a foodstuff such as, coffee beans and nuts.

[00107] Advantageously, apparatus 300 may be used as described with reference to apparatus 100 above to puff a foodstuff and to pop popcorn and other grains.

[00108] In FIG. 3A, apparatus 300 is shown to comprise a heating chamber 320 (shown in phantom) for containing the foodstuff to be cooked. Heating chamber 320 comprises an opening 322 (not shown) for the entrance and exit of the foodstuff to be cooked and for entrance and exit of retainer 340. Opening 322 is only visible and present when retainer 340 is not in position over the opening 322.

[00109] Retainer 340 which is provided to hold the foodstuff comprises a retainer handle 348 extending from retainer 340. As noted above, in the embodiments shown in FIGS. 3A; 3B; 3C; and 3D, the optional cap 341 is shown to be comprised which may seal opening 322.

[00110] When present, cap 341 may seal the open end of heating chamber 320. When the retainer 340 is in position interfit with connection 336, the retainer handle 348 extends from an opposite end of the heating chamber 320 than the heating chamber handle 328.

[00111] Although not necessary, retainer 340 may comprise a mating component 342 which interfits with a complementary mating component 324 (not shown) on heating chamber 320 at or near opening 322. The retainer mating component 342 may be comprised on cap 341. Mating components 324, 342 may comprise interfitting threads or any other suitable attachment such as, friction fit; male and female socketing; tongue and growing; and dove tailing.

[00112] To minimise the heat transfer, retainer handle 348 and chamber handle 328 are shown to comprise an elongate shape.

[00113] In the embodiment shown, heating chamber 320 is tubular and comprises a circular cross-section.

[00114] Advantageously, one or both of the retainer handle 348 and chamber handle 328 may be eccentrically positioned. This allows rotation of the heating chamber 320 by turning one or both of the retainer handle 328 and the chamber handle 348.

[00115] As will become clear from the description below, apparatus 300, like apparatus 100, may be operated to cook the foodstuff with a domestic gas heat source.

- 142018253579 25 Oct 2018 [00116] Advantageously, apparatus 300 may be operated to cook the foodstuff without electricity or without a source of electricity. This advantage may be achieved by the apparatus 300 not comprising any electrical components.

[00117] The embodiment of apparatus 300 shown in FIG. 3A comprises retainer 340 in the form of a basket 350 configured to be inserted into heating chamber 320. In one embodiment, basket 350 is made of mesh and thereby comprises a plurality of orifices for material to fall through.

[00118] Basket 350 is attached or attachable to the retainer 340 such that removing the retainer 340 also removes the basket 350 from the heating chamber 320.

[00119] The internal basket 350 may be rotated, along with chamber 320, by rotating chamber handle 328. In other embodiments, it is also possible to rotate basket 350 (and other retainers 340) only or independently of chamber 320 by turning retainer handle 348.

[00120] The provision of basket 350 allows apparatus 300 to function for example, like a roaster drum or as a pressure cooker or grain puffing apparatus if fully sealed. The suspended mesh basket 350 is inserted inside the heating chamber 320 which allows foodstuffs such as, coffee beans and nuts, to roast in the internal environment. The design of the mesh basket 350 allows excess chaff to fall through the holes in the mesh.

[00121] A further advantage of the present invention is the heating chamber 320 may be fitted with an internal device that allows a lid of the retainer 340 to automatically open should the user wish to slide the retainer 340. The internal device may comprise a device on heating chamber 320 that actuates the lid of the retainer 340 during withdrawal and/or insertion from heating chamber 320 or an actuator on retainer 340 that operates the lid. This has two key advantages. The first is that the user may agitate the foodstuff manually rather than rotating the apparatus 300. The second is that access may be obtained to the contents inside the retainer 340 drum without touching the lid, which may be hot.

[00122] FIG. 3A also shows that retainer 340 in the form of basket 350 comprises one or more window 351 which is provided to inspect the progress of the cooking of the foodstuff. A complementary window 326 (not shown) may be provided in heating chamber 320. Alternatively, window 351 may be viewed through fenestration 330. The windows 326, 351 may comprise a transparent or translucent covering or pane.

[00123] FIG. 3B shows an embodiment of apparatus 300 in which retainer 340 is in the form of an internal chamber 352 that is inserted into and abuts the heating chamber 320. Because internal chamber 352 abuts heating chamber 320 it has comparatively larger dimensions than basket 350. Like, basket 350, internal chamber 352 is attached or

- 15 2018253579 25 Oct 2018 attachable to retainer 340 and internal chamber 352 may be rotated by turning the chamber handle 328.

[00124] Chamber 320 may comprise a fenestration 330 (not shown) to allow direct heat transfer to the internal chamber 352. The fenestration 330 may be revealed by detaching a removable section 332 of heating chamber 320, see FIGS. 3F and 3G. Fenestration 330 may be located in a bottom of heating chamber 320 to align with the heat source.

[00125] The provision of fenestration 330 is also of significant benefit for cooking techniques such as, rotisserie and roasting. The fenestration 330 may be conveniently closed by inserting removable section 332. As shown in FIGS. 3F and 3G, heating chamber 320 may be entirely closed off by adding removable section 332, in the form of a plate or cover, by sliding or placing the plate or cover over the fenestration 330. Insertion of removable section 332 is also of benefit when using cooking techniques such as, smoking. The removable section 332 provides a solid floor for the woodchips. FIGS. 3F and 3G show a bottom view in which the underside of heating chamber 320 is shown so that the removable section covering 332 the hole, gap, or orifice of fenestration 330 can be observed. For illustration purposes, two different fenestrations 330 and removable sections 332 are shown.

[00126] The embodiment shown in FIG. 3B allows apparatus 300 to be used as a toasting and cooking drum. The abutment or touching of chamber 320 and chamber 352 results in excellent heat transfer. Internal chamber 352 may comprise a continuous or substantially continuous outer wall. The abutment may be across all or substantially all of the internal chamber outer surface of the outer wall. The abutment may be across all or substantially all of the outer surface of the outer wall of the internal chamber 352 (or retainer 340).

[00127] The internal chamber 352 is suitable to cook and slow cook foodstuffs such as, a casserole, a stews and paella.

[00128] Internal chamber 352 also comprises a retainer removable section 349 which can be taken off to expose a retainer fenestration 347 (not shown). The provision of retainer removable section 349 and retainer fenestration 347 allow inspection and/or extraction of the foodstuff.

[00129] Advantageously, the chamber handle 328 may be used as an agitator, which avoids the need to open the apparatus 300. This is another distinct advantage over conventional crockpots or saucepans in which a lid must be lifted to agitate or mix. In the present invention, the internal chamber 352 (and other retainers 340) may be rotated simply by turning chamber handle 328.

- 162018253579 25 Oct 2018 [00130] Yet another advantage of the present invention is that unlike crockpots, which require heating in an oven, which is comparatively costly, apparatus 300 may be heated using a small flame on a gas hob.

[00131] Internal chamber 352 is ideally suited for popcorn making. The internal chamber 352 is simply inserted into the heating chamber 320 with the contents, which are allowed to pop. Intermittent turning of internal chamber 352 may help avoid burning of the popcorn.

[00132] Additionally, toasting flakes, muesli and grains is simple and easy with apparatus 300. The internal chamber 352 may be readily slid in and out with ease. Which means there is plenty of opportunity to check the flakes and grains for optimal results. A removeable baffle and/or fin 353 may be inserted in the toasting or roaster basket 350 or chamber 352 to assist the mixing of the foodstuff when rotating.

[00133] FIG. 3C shows another embodiment of apparatus 300 in which retainer 340 comprises a rotisserie 354. Rotisserie 354 is attached or attachable to retainer 340 and may be rotated by turning the chamber handle 328. An automated device may be attached to the chamber handle 328 or retainer handle 348 to automatically turn the chamber handle 328 or retainer handler 348 and consequently the rotisserie 354.

[00134] Rotisserie 354 is shown to comprise a central skewer 356 extending from the retainer 340 and attaching to the heating chamber 320. The rotisserie 354 also comprises peripheral skewers 356 and opposing holders 359 for sandwiching or otherwise securing the foodstuff. Another variation comprises just a single skewer that will enable whole chickens and other suitable meats to undergo rotisserie.

[00135] The embodiment shown in FIG. 3C allows apparatus 300 to function as a smoker and/or rotisserie. To smoke a foodstuff, woodchips can be placed on an internal surface of the heating chamber 320, then the rotisserie 354 is inserted where it remains suspended above the smoking woodchips. For rotisserie style foodstuffs that do not require woodchips such as, kebabs and meat skewers, the rotisserie 354 is simply inserted as normal, without the use of woodchips.

[00136] FIG. 3D shows another embodiment of apparatus 300 in which heating chamber 320 comprise one or more hinge 334 positioned at a back of heating chamber 320. The one or more hinge 334 is disposed to allow opening of chamber 320 by pivoting one section 320a of the heating chamber 320 attached to the one or more hinge 334. This opening with the one or more hinge 334 may also allow access to the retainer 340 in the form of basket 350; internal chamber 352; or rotisserie 354.

- 172018253579 25 Oct 2018 [00137] Additional functionality of the one or more hinge 334 is addressed through the design of the internal bearings that allows heating chamber 320 to open on its one or more hinge 334 with the rotating handle 328 resting in any position, and with or without the retainer 340 in the form of any cooking device and/or chamber such as, 350, 352, 354 remaining in the heating chamber 320. This allows the user to open the heating chamber 320 on its one or more hinge 334 without any obstruction.

[00138] A further functionality is created through provision of one or more hinge 334 in that chamber 320 can be opened for cleaning. This may have particular appeal after smoking food where there is ash and burn from the woodchips. Heating chamber 320 can then be opened up in full to aid cleaning.

[00139] Equally as important, the one or more hinges 334 can be used to accomplish the searing of meats, or skillet-style and hot plate cooking directly onto the internal surface of the heating chamber 320.

[00140] This highlights another advantage that flows from the apparatus 300 not using any electrical equipment or components. This is that the apparatus 300 or heating chamber 320 may be immersed and soaked in water.

[00141] Although not shown, retainer 340 may comprise one or more vent 344 which may be opened to ventilate the heating chamber 320 during cooking of the foodstuff. The vent may be disposed in cap 341.

[00142] FIGS. 3A, 3B, 3C and 3D also show different embodiments of a base or stand 380 that may be used. The stand 380 may be configured to fit over a gas hob or trivet. Different constructions may be provided for base or stand 380 to allow the apparatus 300 to be positioned to suit the environment it is operating in. For example, for use at home the stand or base 380 may best be operated by sitting on top of the trivet. From the teaching herein a skilled person is readily able to select a suitable based or stand 380. In remote areas, the open base 380 may sit directly over the heat source, which may be a portable burner or coal.

[00143] Fig 3A shows the apparatus 300 with an open stand or base 380 that is capable of sitting over a gas hob or external heat source. An attachment 382 for stand or base 380 can be seen which gives the apparatus 300 height to clear the hob or other external heat source. Fig 3B shows the apparatus sitting on top of a trivet. The additional attachment to the base 382 has been removed in this example.

- 18 2018253579 25 Oct 2018 [00144] Advantageously, apparatus 300 provides a cooking ecosystem in that future retainers 340 comprising attachments other than basket 350; internal chamber 352; and rotisserie 354 may be provided to serve different cooking functions.

[00145] These additional retainers 340 or can be acquired as required. This adds substantial cost savings for the consumer by saving on the purchase of incremental cookware products.

[00146] Although not limited to the following, future additional retainers 340 may for example include a steamer device for steaming foods; a charcoal and/or briquette canister device with a grate and/or hot plate on top which allows the device to function remotely in a second form without the need for an open flame.

[00147] In the embodiments shown heating chamber 120, 320 and retainer 340 is comprised of stainless steel. In other embodiments, heating chamber 120, 320 and retainer 340 is comprised of other suitable materials such as, a metal, pottery, coated and composite cookware material. The metal may comprise steel, iron, or stainless steel. From the teaching herein, a skilled person is readily able to select a suitable material for heating chamber 120, 320.

[00148] Heating chamber 120, 320 and retainer 340 may comprise a non-stick internal or contact surface. The non-stick internal or contact surface may comprise polytetrafluoroethylene or Teflon®.

[00149] Like apparatus 100, apparatus 300 may also be provided with a safety valve 360 (not shown) to automatically release pressure when a preset limit is reached. Safety valve 360 may have the same advantages, may also comprise the same type of pressure release valve; and have the same preset limit as safety valve 160.

[00150] Apparatus 300 may also comprise a pressure gauge 304 (not shown) for displaying the pressure inside heating chamber 320.

[00151] The invention also provides a method 400 for manufacturing a foodstuff cooking apparatus 300 and a method for manufacturing a foodstuff cooking apparatus 300.

[00152] Apparatus 300 has been used to slow cook lamb shanks with peas and carrots with gas on low heat for approximately three hours. Apparatus 300 retained heat well and took a long time to cool down. Apparatus 300 was also used to cook frozen chicken, vegetables, sauce and rice over a medium heat for approximately one hour. Additionally, popcorn was popped; pumpkin seeds toasted; and chicken smoked. All achieved good results.

[00153] Advantageously, apparatus 100 may find application in the food service industry and home market to allow a user to puff their own natural, unprocessed grains. This can be

- 192018253579 25 Oct 2018 done not just for cereals, but also in general cooking, for example for puffed millet, and as part of foods such as natural and organic muesli bars.

[00154] The portability of apparatus 100 makes it particularly advantageous for those in lower socio-economic brackets. The low cost and usability dramatically reduce the cost of pre-made cereals and bars. It also serves a need for those in remote areas to have the ability to prepare cereals and savoury foods with relative safety where dry goods can often be the major source of food.

[00155] Yet another advantage of apparatus 100, is that it may be used as a portable, domestic pressure cooker. When used as a domestic pressure cooker apparatus 100 may be used at 15 psi.

[00156] Advantageously, apparatus 100, 300 is efficient. The use of apparatus 100, 300 over gas is a very efficient way to cook. The apparatus 100, 300 does not require the large space of an oven to heat up, yet retains heat through the efficient design of the heating chamber 320.

[00157] Another advantage is that there are no electrical components or motors. This avoids servicing, repairs or issues relating to overheating motors and components. Additionally, apparatus 300 can also be submerged in water making cleaning safer.

[00158] The inventor has provided a multifunction apparatus 300 which means it is an extremely attractive cookware product. The cost of buying a roaster, a smoker, a cooker and a rotisserie would be a significant financial investment, it would take up kitchen space, and require the user to navigate the various electrical and care aspects of each cookware.

[00159] Additionally, apparatus 300 is intuitive. The user has the option to stir the food by simply rotating without ever opening a lid or using a stirrer. The option to open is also provided.

[00160] Further, apparatus 300 provides incremental cost benefits. Other inserts will be developed in the future. The incremental cost of a new inset that serves a new purpose, represent an incremental cost only.

[00161] In poverty stricken areas, apparatus 100, 300 and method 200, 400 may be an essential, that would be an alternative and transformative use for ordinary rice.

[00162] By utilising only an external heat source such as a gas hob or external flame the apparatus 100, 300 can perform multiple cooking functions for the user.

[00163] The interchangeable design of the apparatus 300 means future cooking methods can be created at a marginal cost to the user, and without different motors or electrical circuit boards embedded.

-202018253579 25 Oct 2018 [00164] An illustration of the use of the rotisserie function of the apparatus 300 would allow the user to skewer an entire chicken and using the rotisserie function of the apparatus prepare a rotisserie-style chicken at home at an economical cost whilst giving the user the ability to select whether the meat is organic or not.

[00165] This same apparatus 300 could further be used to puff grains in another form which creates realistic economies for the user.

[00166] Unlike the prior art, apparatus 300 allows flames or heat to pass directly into the chamber 320 and allows direct contact with the foodstuff.

[00167] Advantageously, apparatus 300, allows the release of the meat juices or other moisture from the foodstuff for an alternative and textural cooking method. Specifically, the ability to charcoal the foodstuff is a distinct advantage of apparatus 300. In contrast, some prior art devices specifically teach containing the juices of the meat and minimising air during the cooking process.

[00168] Apparatus 300 additionally allows for air and smoke to enter the foodstuff, which advantageously provides a major secondary advantage. Smoking requires air to reach the foodstuff, not to be locked out.

[00169] Yet another advantage of the apparatus 300 is that the outer casing of chamber 320 may be opened on one or more hinge 334 while the internal retainer 340 remains in place. This creates significant air flow, which in stark difference to the encapsulated design of conventional devices, is of benefit to applications such as, coffee roasting, nut roasting, in which humidity should be minimised.

[00170] As noted above, apparatus 300 allows the retainer 340 to rotate independent of the outer heating chamber 320. This point of difference is of significant advantage for use on a gas hob because the apparatus 300 remains stationary even while rotating.

[00171] Unlike conventional designs, apparatus 300 allows for a direct flame and smoke to enter the chamber 320 and retainer 340. Merely allowing a flame to pass into chamber 320 does not mean the flame will burn the foodstuff. A low setting for the flame on a gas hob will not reach the foodstuff.

[00172] Another advantage of apparatus 300 is that a foodstuff such as, meat, can be cooked with or without juice. A retainer 340 comprising a solid internal basket or tin foil may be used or the foodstuff may be cooked with air, allowing a crispier result such as a obtained with charcoal chicken. With apparatus 300 both methods may be employed with an initial roasting, then open air cooking to achieve a desired or alternative result, e.g. moist inner chicken with a crispy outer.

-21 2018253579 25 Oct 2018 [00173] Apparatus 300 may also be used without an end cap 341 or lids to be in place when using. When smoking a foodstuff or when using apparatus 300 as a rotisserie the end cap 341 is not required. This is because retainer 340 is suspended through connections 336, 346. This is important, because the user may decide to prepare a foodstuff without an end cap 341 to allow greater airflow and/or reduced humidity.

[00174] The present invention has the clear advantage of providing a business an apparatus 300 that can be used in a commercial setting and which has a compact nature which also permits natural smoking of foods which broadens the product range the business can offer to consumers.

[00175] In this specification, the terms “comprises”, “comprising” or similar terms are intended to mean a non-exclusive inclusion, such that an apparatus that comprises a list of elements does not include those elements solely, but may well include other elements not listed.

[00176] Throughout the specification the aim has been to describe the invention without limiting the invention to any one embodiment or specific collection of features. Persons skilled in the relevant art may realize variations from the specific embodiments that will nonetheless fall within the scope of the invention.

Claims (20)

1. The Claims defining the invention are as follows:

   1. A foodstuff cooking apparatus comprising:

   a heating chamber for containing the foodstuff to be cooked, the heating chamber comprising at least one opening for entrance and exit of the foodstuff and at least one fenestration, the fenestration exposed by detaching a removable section of the heating chamber, the fenestration allowing direct heat transfer to a retainer;

   the retainer disposed internally of the heating chamber, the retainer for holding the foodstuff wherein the retainer is removably attached to a connection on the heating chamber;

   a retainer handle extending from the retainer; and a chamber handle extending from the heating chamber.
2. 2. The apparatus of Claim 1 further comprising a closure for sealing the at least one opening.
3. 3. A method for manufacturing a foodstuff cooking apparatus according to Claim 1 or Claim 2.
4. 4. A method for manufacturing a foodstuff cooking apparatus, the method comprising:

   manufacturing a heating chamber for containing the foodstuff to be cooked, the heating chamber comprising at least one opening for entrance and exit of the foodstuff, at least one fenestration, a connection for attachment of a retainer and the heating chamber comprising a chamber handle extending therefrom; and manufacturing the retainer for internal disposal within the heating chamber, the retainer for holding the foodstuff, wherein the retainer comprises a retainer handle extending therefrom; and wherein the fenestration is exposed by detaching a removable section of the heating chamber, the fenestration allowing direct heat transfer to the retainer.
5. 5. The method of Claim 4 wherein the retainer further comprises a closure for sealing the at least one opening.
6. 6. A method for cooking a foodstuff comprising cooking the foodstuff in the apparatus of Claim 1 or Claim 2.

   -23 2018253579 25 Oct 2018
7. 7. A foodstuff cooked according to the method of Claim 6 or cooked with the apparatus of Claim 1 or Claim 2.
8. 8. The apparatus or method of any one of the preceding Claims operated to cook the foodstuff with a domestic gas heat source.
9. 9. The apparatus or method of any one of the preceding Claims operated to cook the foodstuff without electricity or without a source of electricity.
10. 10. The apparatus or method of any one of the preceding Claims wherein no electrical components are comprised.
11. 11. The apparatus or method of any one of the preceding Claims wherein the retainer is rotated by turning the retainer handler.
12. 12. The apparatus or method of Claim 11 wherein the rotation of the retainer is independent of the heating chamber.
13. 13. The apparatus or method of any one of the preceding Claims wherein the retainer may comprise one or more of a basket; a rotisserie; and an internal chamber.
14. 14. The apparatus or method of any one of the preceding Claims wherein the retainer comprises one or more window.
15. 15. The apparatus or method of any one of the preceding Claims wherein the heating chamber comprises one or more hinge.
16. 16. The apparatus or method of any one of the preceding Claims wherein the connection on the heating chamber is disposed at an opposing end of the heating chamber to the one or more opening.
17. 17. The apparatus or method of any one of the preceding Claims wherein the fenestration is revealed by detaching a removable section of the heating chamber.
18. 18. The apparatus or method of any one of the preceding Claims wherein the retainer handle extends from an opposite end of the heating chamber than the heating chamber handle.
19. 19. The apparatus or method of any one of the preceding Claims wherein the retainer may further comprise one or more baffle and/or fin to assist mixing of the foodstuff.
20. 20. The apparatus or method of any one of the preceding Claims wherein the heating chamber may be tubular.