US4775357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Positive drive belt
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1987-03-06
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Granted: 1988-10-04
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Expires: 2007-03-06
Abstract
Abstract A high capacity, toothed belt having an elastomeric body composed of a single elastomeric compound which includes from 2 to 30 parts of short fiber flock reinforcement. The flock must have a length to diameter (L/D) ratio less than 10:1.
Inventors
- 👤 John C. Wolfe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:52
CPC Classifications
F; F16; F16G; F16G1/00; F16G1/28
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
87 words
Positive drive belt comprising: an elastomeric body of a single thermosetting rubber having homogeneously incorporated therein a short fiber flock reinforcement having a length to diameter ratio of less than 10:1; a substantially inextensible tensile member extending longitudinally through said body on a neutral axis having a tensile section above said neutral axis and a compression section below said neutral axis; a plurality of teeth formed in said elastomeric body forming said compression section of said belt and regularly spaced longitudinally along the body of said belt.
Claim 2
Dependent Claim
87 words
Positive drive belt comprising: an elastomeric body of a single thermosetting rubber having homogeneously incorporated therein a short fiber flock reinforcement having a length to diameter ratio of less than 10:1; a substantially inextensible tensile member extending longitudinally through said body on a neutral axis having a tensile section above said neutral axis and a compression section below said neutral axis; a plurality of teeth formed in said elastomeric body forming said compression section of said belt and regularly spaced longitudinally along the body of said belt.
Claim 3
Dependent Claim
31 words
A belt according to claim 1 wherein said short fiber flock is between about 2 to about 30 parts by weight per hundred parts of thermosetting rubber in said elastomeric body.
Claim 4
Dependent Claim
33 words
A belt according to claim 1 wherein said short fiber flock is formed of textile filaments selected from the group consisting of aliphatic polyamides, aromatic polyamides, cotton, rayon, nylon, polyester and fiber glass.
Claim 5
Dependent Claim
25 words
A belt according to claim 1 wherein the short fiber flock is selected from material which can pass through a 60 to 120 mesh screen.
Claim 6
Dependent Claim
19 words
A belt according to claim 1 wherein said length to diameter ratio range is about 8 to about 1.5.
Claim 7
Dependent Claim
19 words
A belt according to claim 1 wherein said length to diameter ratio range is about 5 to about 1.
Claim 8
Dependent Claim
29 words
A belt according to claim 1 wherein said short fiber flock is oriented throughout said thermosetting rubber and lies generally parallel to said tensile member in said elastomer body.
Claim 9
Dependent Claim
36 words
A belt according to claim 1 wherein said flock is incorporated in said elastomeric body at a level of from about 8 to about 12 parts by weight per one hundred parts of said thermosetting rubber.
References Cited (Backward Citations)
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Cited
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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) | 1991-10-04 | 1992-04-04 | 1992-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-04 | 1996-04-04 | 1996-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-04 | 2000-04-04 | 2000-10-04 | $7700.00 | Window Closed / Lapsed |