Patent US3922759A successfully refreshed from Google Patents.
US3922759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Belt connector with flexible bite feature
Assignee: L M and L Corp
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Filing: 1975-02-18
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Granted: 1975-12-02
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Expires: 1995-02-18
Abstract
Abstract A novel connector for use in forming endless belts from hollowtubing formed of rubber, synthetic organic polymers or the like. The connector is characterized by a biting edge which is larger diameter than the inside diameter of the tubing and which is readily flexible away from the direction of insertion of the edge into the tube. Once inserted, any tension on the tube will cause the biting edge to seize the internal wall of the tubing.
Inventors
- 👤 Norman H Mabie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:18
CPC Classifications
F; F16; F16G; F16G3/00; F16G11/00; F16G11/08; Y; Y10; Y10T; Y10T24/00; Y10T24/16; Y10T24/1672
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
105 words
In a coupling insert for joining the opposite ends of an endless belt of polymeric material to form a closed loop, said insert comprising an elongate body adapted for insertion into opposite ends, the improvement wherein said coupling comprises proximate each end thereof, a flexible outwardly projecting annular gripping ring having a sharp edge thereon adapted to engage said polymer, said ring being so fastened to said body that it is adapted to flex in a direction away from said end to which it is adjacent, and wherein said coupling includes means to restrict flexing of said gripping ring toward said end of said body.
Claim 2
Dependent Claim
105 words
In a coupling insert for joining the opposite ends of an endless belt of polymeric material to form a closed loop, said insert comprising an elongate body adapted for insertion into opposite ends, the improvement wherein said coupling comprises proximate each end thereof, a flexible outwardly projecting annular gripping ring having a sharp edge thereon adapted to engage said polymer, said ring being so fastened to said body that it is adapted to flex in a direction away from said end to which it is adjacent, and wherein said coupling includes means to restrict flexing of said gripping ring toward said end of said body.
Claim 3
Dependent Claim
48 words
A coupling insert as defined in claim 1 wherein said means to restrain flexing of said coupling is an end piece of a diameter which is relatively large with respect to the diameter of said body, said gripping ring being held betwen said end piece and said body.
Claim 4
Dependent Claim
35 words
A coupling insert as defined in claim 2 wherein said body, each said ring and each said means to restrict flexing of each said ring are formed of separate members held together by fastening means.
Claim 5
Dependent Claim
34 words
A coupling insert as defined in claim 1 wherein said flexing restraint means is an outer stop ring mounted between said flexible gripping ring and the end of said coupling proximate said gripping ring.
Claim 6
Dependent Claim
49 words
Apparatus as defined in claim 4 wherein said coupling insert comprises additionally, an inner stop ring of smaller diameter than said outer stop ring, said inner stop ring forming means to support, and resist further flexing of, said gripping ring in the direction away from said outer stop ring.
Claim 7
Dependent Claim
19 words
A coupling insert as defined in claim 1 wherein said insert is shaped from a single piece of material.
Claim 8
Dependent Claim
31 words
Apparatus as defined in claim 1 wherein said annular gripping ring normally slopes upwardly and inwardly away from the adjacent end of said coupling when said gripping ring is at rest.
Claim 9
Dependent Claim
85 words
A coupling insert for joining the opposite ends of an endless belt of polymeric material to form a closed loop, said insert comprising an elongated body adapted to be inserted within the opposite ends of an endless polymeric belt, said body having opposite ends, and a pair of outwardly projecting gripping flanges on said body, each spaced inwardly from one of said ends and each of flexible material adapted to flex from a truncated conical configuration during insertion to a disc-like configuration under withdrawal forces.
Claim 10
Dependent Claim
85 words
A coupling insert for joining the opposite ends of an endless belt of polymeric material to form a closed loop, said insert comprising an elongated body adapted to be inserted within the opposite ends of an endless polymeric belt, said body having opposite ends, and a pair of outwardly projecting gripping flanges on said body, each spaced inwardly from one of said ends and each of flexible material adapted to flex from a truncated conical configuration during insertion to a disc-like configuration under withdrawal forces.
Claim 11
Dependent Claim
23 words
A coupling as specified in claim 8 plus restraining means on said coupling at said ends for restricting outward flexing of said flanges.
Claim 12
Dependent Claim
17 words
A coupling as specified in claim 9 wherein said body, flanges and restraining means are one piece.
Claim 13
Dependent Claim
23 words
A coupling as specified in claim 8 wherein each said gripping flanges is radially slit at spaced distances therearound and of thin metal.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |