AU691035B2 - Tap - Google Patents
Tap Download PDFInfo
- Publication number
- AU691035B2 AU691035B2 AU34412/95A AU3441295A AU691035B2 AU 691035 B2 AU691035 B2 AU 691035B2 AU 34412/95 A AU34412/95 A AU 34412/95A AU 3441295 A AU3441295 A AU 3441295A AU 691035 B2 AU691035 B2 AU 691035B2
- Authority
- AU
- Australia
- Prior art keywords
- plug
- tap
- port
- internal
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 239000007788 liquid Substances 0.000 claims description 26
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 239000004743 Polypropylene Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- -1 polypropylene Polymers 0.000 claims description 5
- 229920001155 polypropylene Polymers 0.000 claims description 5
- 239000011324 bead Substances 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005422 blasting Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Devices For Dispensing Beverages (AREA)
Description
AUSTALIARegulation 3 Pawens Act 1990
ORIGINAL
COMPLETE SPECIFICATION STANDARD PATENT
T/AP
Invention The following statement Is a full, description of this Invention, Including the best method of performing it known to me:- .i .I i0 .V 0: 0 This invention relates in general to stop cock valves and relates in particular to a tap for fitment to containers and for dispensing liquids from containers, and wherein the tap has a hollow body fitted with a hollow rotatable plug rotatable between on/off and intermediate settings and which has a side-entry port for liquid and a bottom liquid dispensing port, the body has an internal flow port surrounded by a valve countersunk into the inside cylindrical surface of the body wall and an internal anti-drip O-ring seal is fitted into a flat-grooved seat surrounding the internal flow port. According to the invention there is provided a stop-cock tap for fitment to to and for dispensing liquids from containers and which comprises an externally-threaded tubular body for fitment into an internally-threaded bung hole of a container and a tubular plug adapted to be rotatably housed within the body, the plug having an integrally-formed handle upstanding therefrom atop a tubular section with two apertures comprising a liquid-dispensing bottom 15 spout and a side-entry, liquid-inflow port, the tap body has a plug-insertion top opening and a bottom opening for the plug spout, a container-end, liquid-inflow, and displacement air inflow opening connected to a fluid-flow passage and an internal, axial, liquid-outflow and displacement air inflow port openable and closable by rotational movements of the plug by turning the handle, wherein the tubular, plug-housing portion of the tap body has a valve formed within its internal surface and surrounding the internal port, the valve having a seat formed by a continuous groove formed between inner and outer walls and being counter-sunk into the said internal surface and having an internal O-ring seal placed within the groove, wherein, when the side entry, flow 2. port of the plug is in alignment with the internal axial flow port of the body and the valve, liquid flows from the tap and when the side-entry flow port of the plug is out of angular alignment with the valve and internal port of the body, Sliquid flow is stopped.
2 Preferably, the valve of the tap body is substantially oval-shaped and more preferably is in the form of an elongated oval, the groove and inner and outer walls of the seat having parallel sides and curved ends.
Preferabjly, the liquid inflow side entry port of the plug is a slot corresponding in shape to that of the valve and liquid outflow and displacement air inflow port of the tap body.
Preferably, the valve opening and the internal port of the tap body are elongated in an axial direction with respect to the plug housing portion to allow liquid outflow and displacement air inflow through the tap.
io Preferably, the opening and closing movement of the plug is degrees.
Preferably, movement stops are moulded onto the exterior of the tap body at the top and corresponding movement stop lugs are moulded onto the exterior of the plug and depend from the handle.
o- -Preferably, the plug has a flange formed below the handle portion and an external locking rib is formed just below the flange for locking the plug into the body of the tap via an internal annular groove at the top of the el plug-receiving portion of the body in a snap-fit action and the plug has a o: transverse external flat formed therein underneath the handle flange and which o20 acts as a displacement air bleed inflow opening during liquid-dispensing outflow.
Preferably, the tap body is provided with, inwards of the thread, a bung-hole flange and an O-ring sealing member is adapted to be placed within a gap formed between the bung-hole flange and the inner end of the thread.
zS Preferably, the tap body has two O-ring seals fitted thereto, the first O-ring seal being internally fitted within the valve seat groove, the second O-ring seal being externally fitted around the tap body inwards of the thread and in the gap between the bung hole flange and the inner end of the thread.
3 Preferably, the plug and the body are both made of polypropylene by injection moulding and the surfaces of the plug and body both have a glass-bead roughened surface.
In a preferred construction, the tubular plug of the tap has a portion with a cylindrical outside surface and the tubular plug-housing portion of the tap body has a cylindrical inside surface, the side-entry, liquid-flow port of the plug is provided with a cylindrically-curved median rib extending across the port, the rib has an cutside surface matching that of the tap plug and also the cylindrical inside surface of the tap body whereby fouling of the internal O-ring seal of the body by external edges around the side entry port of the plug during opening and closing rotational movements thereof when housed within the body is counteracted, Preferably the O-rings used in the seals of the tap are made of chemical corrosion-resistant material namely synthetic polymeric, rubber-like Is material and preferably, polyacrylonitrile.
Preferably, plug-housing tubular portion of the tap body is provided diametrically opposite the valve seat with an oval-shaped aperture extending therethrough to facilitate installation of the internal O-ring seal within "the valve seat.
A non-limiting example of a preferred embodiment and practical arrangement of the invention will now be described with reference to the accompanying drawings, in which: Figure 1 is a partial vertical section of a dispensing plug for use in the tap of the present invention.
Figure 2 is an axial section of the tap body for housing the tap plug of Figure 1.
Figure 3 is a top plan view of the plug of Figure 1.
I
Figure 4 is a vertical section taken along the line 4-4 of Figure 1 in the direction of the arrows.
Figure 5 is an elevation of the assembled tap according to the invention screwed into a container with the plug of Figures 1 and 3 installed S within the body of Figures 2 and 4.
Referring to the drawings, there is shown in the pre-assembly views of the stop cock tap of Figures 1 to 4, a tap plug 10 and tap body 11 forming a housing for the plug which is removable from the body. The plug and the body 11 are formed of suitable wear and corrosion-resistant polymeric Ic material such as polypropylene and by injection moulding. To counteract or prevent internal out-of-roundness of internal cylindrical internal walls of the tap components the die core is preferably glass-bead blasted. Also for fitment up to size when moulded from polypropylene, it is preferred that the die tools have a roughened non-smooth surface finish applied by glass-bead blasting. The plug 10 is formed with an integral handle portion 12 and below it an integral S"flange 13 is formed above a tubular portion 14 which is formed with two apertures, namely a liquid inflow port 16 in the side which is preferably in the form of a closed, elongated axial slot with parallel side walls and curved end S walls and this slot is provided with a median rib 17 which will be explained hereinafter. The plug 10 has a main inner section with a cylindrical internal surface and has a tapered and preferably conical pouring spout 14a. The tap body 11 is formed generally as a T-piece with three external openings at the ends of the T and has one internal opening between two tubular and preferably cylindrical portions comprising a threaded, container mounting portion 18 and 2 a plug-receiving portion 19 which are mutually at right angles. The tap body 11 has an axial-flow internal liquid outflow port 20 (also the displacement air inflow port) between the portions 18 and 19 which is surrounded by a valve 21 which has components generally of the same shape and surrounds the outlet port 20 and which is openable and closable by hand turning of the plug 10 via degrees via the handle 12 wherein when the side-entry liquid inflow port 16 of the plug is in alignment with the axial liquid outflow port 20 and valve openingofthe-tap-body 1, liquid-flows-from the container into the upstream opening of the tap body 11 then through the passage and through the internal outflow port 20 (and past seat 21) into side-entry liquid inflow port 16 of the plug 10 (installed within the body 11) and through spout 14a. When the plug is turned via its handle to a position where its side-entry inflow port 16 is out of alignment with outflow port 20 (and valve of the body 11 the valve is shut o and liquid flow from the tap is cut off. The plug 10 has an external annular locking rib 22 formed just below the flange 13 at the bottom of the handle portion 12 for locking the plug into the body of the tap as shown in Figures 4 and 5 via the internal annular groove 23 at the top of the cylindrical, plugreceiving portion 19 of the body in a snap-fit action. Referring to Figure 3, the 15 plug 10 has a transverse external flat 24 formed therein which acts as a displacement-air bleed inflow gap during liquid-dispensing outflow.
Referring to the internal view of the tap body 11 shown in Figure 4, there is shown in more detail the valve arrangement which includes a valve seat 25 formed between an inner peripheral wall 25a (surrounding internal 2 C outflow port 20 within the cylindrical outer portion 19 of the tap body 11 shown in Figure and an outer peripheral wall or lip 26 around the edge of port between them these two walls enclose the valve seat 25a which is in the form of a flat-floored substantially oval-shaped groove. In more detail walls 25a and 26 have parallel sides and curved ends and the seat 25 is effectively counter- 2S- sunk into the internal wall surface of the tubular portion 19 of the tap body.
The inner wall 25a has a radially innermost face 26a surrounding or forming the port 20 and into the groove 25 forming the valve seat there is adapted to be placed and retained between walls 25 and 26 an internal anti-drip O-ring seal R'V o4,> 6 27 (only half being shown in Figure 4 for clarity to allow the flat valve seat groove 25 to be viewed) which seals the port 20 whenever the tap plug 10 is rotated preferably through .45 degrees to a tap-closed position with its side passage opening away from the flow port 20 of the body 11. Liquid dispensing flow from the tap can be varied by rotation of the handle to intermediate angular plug settings between fully-closed and fully-open positions. The curved median web 17 extends across the liquid flow side entry flow port 16 of the plug and has an outside surface of the same curvature as or is flush with) the cylindrical outside surface of the tap plug 10 and also the cylindrical inside 0 surface of the tap body 11. The purpose of this curved median rib 17 of the plug 10 is to counteract fouling of the internal O-ring seal 27 with edges around the liquid flow passage 16 of the plug during opening and closing rotational movements of the plug when housed within the tap body and to prevent Sconsequent jamming of the plug within the body. The distal or liquid-inlet end 15 of the body opposite to the valve 21 has an external thread 28 for screwing the tap into the internal thread of a bung opening in a container 29 and there is aalso provided on the body inwards of the thread, a flange 30 and an O-ring sealing member 31 (refer to Figures 4 and 5) is adapted to be placed within the
C.
gap formed between the flange 30 and the inner end of the thread 28.
The tap of the invention is preferably, provided with external movement-limit stops or plug markings such as for example the web 32 depending below the handle and two raised stops such as the one 33 shown in Figure 5, projecting from diametrically-opposite sides of the tap adjacent the top.
2 To facilitate installation of the internal or first O-ring seal into the seat groove of the tap body valve seat 25a., a large oval aperture 34 is provided in the wall 19 of the tap body opposite the valve seat as shown in ,Figures 2 and
'I
The construction and operation of the valve of the present invention is designed to prevent or at least to substantially counteract dripping of the tap when it is turned off while in use installed in the bunghole of a container containing liquid.
*4 ft ft f ft *ft ft f ft t ftf -tf ft« tooIft ft f
I-
Claims (15)
1. A stop-cock tap for fitment to and for dispensing liquids from containers and which comprises an externally-threaded tubular body for fitment into an internally-threaded bung hole of a container and a tubular plug adapted to be rotatably housed within the body, the plug having an integrally- formed handle upstanding therefrom atop a tubular section with two apertures comprising a liquid-dispensing bottom spout and a side-entry, liquid-inflow port, the tap body has a plug-insertion top opening and a bottom opening for the plug spout, a container-end, liquid-inflow, and displacement air inflow opening connected to a fluid-flow passage and an internal, axial, liquid-outflow and displacement air inflow port openable and closable by rotational movements of the plug by turning the handle, wherein the tubular, plug-housing portion of the tap body has a valve formed within its internal surface and surrounding the internal port, the valve having a seat formed by a continuous groove formed between inner and outer walls and being counter-sunk into the said internal surface and having an internal O-ring seal placed within the groove, wherein, when the side entry, flow port of the plug is in alignment with the internal axial flow port of the body and the valve, liquid flows from the tap and when the side-entry flow port of the plug is out of angular alignment with the valve and internal port of the body, liquid flow is stopped.
2. The tap according to claim 1 wherein the valve seat of the tap body :L is substantially oval-shaped.
3. The tap according to claim 1 or 2 wherein the vallve is in the form of an elongated oval, the inner and outer walls surrounding and forming the seat having parallel sides and curved ends,
4. The tap according to any preceding claim wherein the liquid flow side entry port of the plug is a slot corresponding in shape to that of the liquid X flow outlet port of the tap body. a o a i* a a *5 a. a *4O The tap according to any one of claims 2 to 4 wherein the valve and the internal port of the tap body are elongated in an axial direction with respect to the plug housing portion of the tap body for two-way flow of liquid outflow and displacement air inflov through the valve.
6. The tap according to any preceding claim wherein the opening and closing movement of the plug is 45 degrees.
7. The tap according to claim 6 wherein movement stops are moulded onto the exterior of the tap body at the top and corresponding movement stop lugs are moulded onto the exterior of the plug and depend from the handle. The tap according to any preceding claim wherein the plug has a flange formed below the handle portion and an external locking rib is formed just below the flange for locking the plug into the body of the tap via an internal annular groove at the top of the plug-receiving portion of the body in a snap-fit action.
9. The tap according to any preceding claim wherein the plug has a transverse external flat formed therein underneath the handle flange and which acts as a displacement air bleed inflow opening during liquid-dispensing outflow. The tap according to any preceding claim wherein the tap body is provided with inwards of the thread, a bung-hole flange and an O-ring sealing member is adapted to be placed within a gap formed between the bung-hole flange and the inner end of the thread.
11. The tap according to any preceding claim wherein the tap body has two O-ring seals fitted thereto, the first O-ring seal being internally fitted within the valve seat groove, the second O-ring seal being externally fitted around the tap body inwards of the thread and in the gap between the bung hole flange and the inner end of the thread.
12. The tap according to any preceding claim wherein the plug and the body are both made of polypropylene by injection moulding and the surfaces of the plug and body both have a glass-bead roughened surface.
13. The tap according to any preceding claim wherein the tubular plug has a portion with a cylindrical outside surface and the tubular plug- housing portion of the tap body has a cylindrical inside surface, the side-entry, liquid-outflow port of the plug is provided with a cylindrically-curved median rib extending across the port, the rib has an outside surface matching that of the tap plug and also the cylindrical inside surface of the tap body whereby fouling of the internal O-ring seal of the body by external edges around the side entry port of the plug during opening and closing rotational movements thereof when housed within the body is counteracted.
14. The tap according to any one of claims 1, 10, 11 and 13 wherein .*o °the O-rings are made of chemical corrosion-resistant material.
15. The tap according to claim 16 wherein the O-rings are maae of synthetic polymeric, rubber-like material.
16. The tap according to claim 16 or 17 wherein both O-rings are made of polyacrylonitrile.
17. The tap according to any one of claims 1, 8, 9, 13, 15 and 16 to 16 wherein the cylindrical plug-housing tubular portion of the tap body is provided diametrically opposite the valve seat with an oval-shaped aperture extending therethrough to facilitate installation of the internal O-ring seal within the valve seat.
18. A stop-cock tap substantially as hereinbefore described with reference to the accompanying drawings. Dated this 9th day of February, 1998 STREAMLUX PTY.LTD. SBy Our Patent Attorney:JOHN L.DAVIES CO. ABSTRACT A threaded stop cock tap of polypropylene is designed to be screwed into the bung hole of a container (39) and has a tubular plug (10) rotatable in a body (11) with two tubular portions (18, 19) mutually at right angles, the tap plug has a side entry port (16) and a bottom discharge opening for liquid from the container a valve seat (21) is countersunk as a groove or channel into one internal wall of the tap body and surrounds and is of corresponding shape to a liquid flow port (20) in the form of a slot with parallel side walls and curved end walls; an O-ring placed into the seat seals against the plug when it is rotated 45 degrees to move its side entry port (16) out of register with that of the tap body The tap plug (10) has a curved web (17) across its port to prevent fouling of the 0-ring seal (27) against its edges and jamming of the plug in the body. The plug is snap-fitted into the body via an internal annular rib (22) which fits into an internal annular groove (23) in S: the top of the body. The plug and the body have corresponding movement stops (32, 33). r os~ ooco po p
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU34412/95A AU691035B2 (en) | 1994-11-14 | 1995-10-24 | Tap |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPM9400 | 1994-11-14 | ||
| AUPM9400A AUPM940094A0 (en) | 1994-11-14 | 1994-11-14 | Tap |
| AU34412/95A AU691035B2 (en) | 1994-11-14 | 1995-10-24 | Tap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU3441295A AU3441295A (en) | 1996-05-23 |
| AU691035B2 true AU691035B2 (en) | 1998-05-07 |
Family
ID=25622878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU34412/95A Ceased AU691035B2 (en) | 1994-11-14 | 1995-10-24 | Tap |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU691035B2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2824874A1 (en) * | 1978-06-07 | 1979-12-20 | Walter Stapperfend | Beer tap sealing system - has two sealing rings mounted on rotary spindle above and below cut=off point |
| FR2569173A1 (en) * | 1985-03-07 | 1986-02-21 | Leer France Sarl Van | Drain device for liquid container or the like |
| GB2202032A (en) * | 1987-03-09 | 1988-09-14 | Craig Med Prod Ltd | Tap for drainage bag |
-
1995
- 1995-10-24 AU AU34412/95A patent/AU691035B2/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2824874A1 (en) * | 1978-06-07 | 1979-12-20 | Walter Stapperfend | Beer tap sealing system - has two sealing rings mounted on rotary spindle above and below cut=off point |
| FR2569173A1 (en) * | 1985-03-07 | 1986-02-21 | Leer France Sarl Van | Drain device for liquid container or the like |
| GB2202032A (en) * | 1987-03-09 | 1988-09-14 | Craig Med Prod Ltd | Tap for drainage bag |
Also Published As
| Publication number | Publication date |
|---|---|
| AU3441295A (en) | 1996-05-23 |
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