Patent US4052909A successfully refreshed from Google Patents.
US4052909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power transmission belt
Assignee: BorgWarner Automotive Transmission and Engine Component Corp
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Filing: 1976-09-13
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Granted: 1977-10-11
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Expires: 1996-09-13
Abstract
Abstract An endless power transmission belt having a reinforcing tension and lateral stiffening means, an endless one-piece plastic member. The member is formed with alternate rod-like portions and hinge portions and the entire member is bonded to the elastomeric body of the belt. Such belt is especially adaptable for transmitting power in variable pulley drives and the like.
Inventors
- 👤 John Craig Warner
- 👤 Mark William Gravel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:00
CPC Classifications
F; F16; F16G; F16G5/00; F16G5/12; F16G5/14; F16G1/00; F16G1/14; F16G1/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
81 words
A power tranmission belt which comprises an elastomeric body and a longitudinally flexible and laterial stiff member bonded to said elastomer of said body, said member being of a plastic and having alternate relatively thin laterally extending portions and relatively thick and rodlike laterally extending portions, said member being of one piece and of a single plastic, said relatively thin portions acting as living hinges providing the longitudinally flexibility of the belt while said rod-like portions provide the lateral stiffness thereof.
Claim 2
Dependent Claim
81 words
A power tranmission belt which comprises an elastomeric body and a longitudinally flexible and laterial stiff member bonded to said elastomer of said body, said member being of a plastic and having alternate relatively thin laterally extending portions and relatively thick and rodlike laterally extending portions, said member being of one piece and of a single plastic, said relatively thin portions acting as living hinges providing the longitudinally flexibility of the belt while said rod-like portions provide the lateral stiffness thereof.
Claim 3
Dependent Claim
14 words
A power transmission belt as recited in claim 1 wherein said plastic is polypropylene.
Claim 4
Dependent Claim
19 words
A power transmission belt as recited in claim 2 in which said member is embedded in the elastomeric body.
Claim 5
Dependent Claim
23 words
A power transmission belt as recited in claim 2 in which said member is a covering for one surface of said elastomeric body.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |