NZ744234B2 - Coupler for threaded reinforcing bar - Google Patents
Coupler for threaded reinforcing bar Download PDFInfo
- Publication number
- NZ744234B2 NZ744234B2 NZ744234A NZ74423418A NZ744234B2 NZ 744234 B2 NZ744234 B2 NZ 744234B2 NZ 744234 A NZ744234 A NZ 744234A NZ 74423418 A NZ74423418 A NZ 74423418A NZ 744234 B2 NZ744234 B2 NZ 744234B2
- Authority
- NZ
- New Zealand
- Prior art keywords
- thread
- coupler
- reinforcing bar
- enlargement
- internal thread
- Prior art date
Links
- 230000003014 reinforcing effect Effects 0.000 title claims abstract 12
- 238000010276 construction Methods 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims abstract 2
- 239000011800 void material Substances 0.000 claims abstract 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/30—Locking exclusively by special shape of the screw-thread
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/06—Turnbuckles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/18—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using screw-thread elements
- F16B7/182—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using screw-thread elements for coaxial connections of two rods or tubes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/57—Distinct end coupler
- Y10T403/5733—Plural opposed sockets
Abstract
coupler for mounting to externally threaded reinforcing bar for use in concrete construction, comprises a body having a portion with an internal thread for engagement with a thread of a reinforcing bar. A thread form is located at an inner end portion of the internal thread which includes opposing flanks and an enlargement of progressively increasing extension on one of the flanks. The enlargement extends towards the other of the opposing flanks of the internal thread to provide an increasing friction fit with the thread of the reinforcing bar. The enlargement is only on a part of a face of the flank whereby during tightening of the coupler onto the reinforcing bar, the remainder of the face of the flank forms, in conjunction with an adjacent flank of the thread of the reinforcing bar, a void for receiving material displaced during the tightening.
Claims (6)
1. A coupler for mounting to externally threaded reinforcing bar for use in concrete construction, the coupler comprising a body having a portion with an internal thread for engagement with a thread of a reinforcing bar, wherein a thread form at an inner end portion of the internal thread includes opposing flanks and an enlargement of progressively increasing extension on one of the flanks, the enlargement extending towards the other of the opposing flanks of the internal thread to provide an increasing friction fit with the thread of the reinforcing bar, the enlargement being only on a part of a face of the flank whereby during tightening of the coupler onto the reinforcing bar, the remainder of the face of the flank forms, in conjunction with an adjacent flank of the thread of the reinforcing bar, a void for receiving material displaced during the tightening.
2. A coupler according to claim 1, wherein the enlargement is of rounded form.
3. A coupler according to claim 1 or claim 2, wherein the enlargement is formed adjacent a crest of the internal thread.
4. A coupler according to any one of claims 1 to 3, wherein the enlargement is formed on no more than about two turns of the internal thread.
5. A coupler according to any one of claims 1 to 4 for coupling two threaded reinforcing bars in end to end relation, the coupler having respective internal threads extending inwardly from opposite ends and separated at their inner ends by an internal stop, the thread form of each internal thread including an enlargement of progressively increasing extension as defined in claim 1.
6. A coupler according to claim 1, the coupler being substantially as hereinbefore described with reference to the accompanying drawings. 25821169.1:DCC
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2017902841A AU2017902841A0 (en) | 2017-07-20 | Coupler for threaded reinforcing bar | |
| AU2018205080A AU2018205080B2 (en) | 2017-07-20 | 2018-07-10 | Coupler for threaded reinforcing bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NZ744234A NZ744234A (en) | 2024-11-29 |
| NZ744234B2 true NZ744234B2 (en) | 2025-03-04 |
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