US4012962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endless power transmission belt structure
Assignee: Dayco Products LLC
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Filing: 1976-03-15
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Granted: 1977-03-22
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Expires: 1996-03-15
Abstract
Abstract An endless power transmission belt structure is provided and made of a thermoplastic elastomer having an oriented crystalline structure about substantially its entire endless path, and oriented only along this path.
Inventors
- 👤 David G. Ballou
- 👤 Clinton L. Bishop
- 👤 Toby K. Pope
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:59
CPC Classifications
F; F16; F16G; F16G5/00; F16G5/12; F16G5/14; B; B29; B29D; B29D29/00; B29D29/10; F16G1/00; F16G1/14; F16G1/16; F16G5/16; F16G5/166
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
32 words
An endless power transmission belt structure comprising a thermoplastic polyester elastomer having an oriented crystalline structure about substantially its entire endless path, said crystalline structure being oriented only along said endless path.
Claim 2
Dependent Claim
32 words
An endless power transmission belt structure comprising a thermoplastic polyester elastomer having an oriented crystalline structure about substantially its entire endless path, said crystalline structure being oriented only along said endless path.
Claim 3
Dependent Claim
39 words
A belt structure as set forth in claim 1 and defined as a load-carrying section of an endless power transmission belt and further comprising a tension section and a compression section bonded on opposite sides of said load-carrying section.
Claim 4
Dependent Claim
16 words
A belt structure as set forth in claim 1 defined as an entire power transmission belt.
Claim 5
Dependent Claim
48 words
An endless power transmission belt structure consisting of a thermoplastic polyester elastomer having an elongated oriented crystalline structure about substantially its entire endless path, said endless path having a length several times its original length prior to elongation, said crystalline structure being oriented only along said endless path.
Claim 6
Dependent Claim
48 words
An endless power transmission belt structure consisting of a thermoplastic polyester elastomer having an elongated oriented crystalline structure about substantially its entire endless path, said endless path having a length several times its original length prior to elongation, said crystalline structure being oriented only along said endless path.
Claim 7
Dependent Claim
27 words
A belt structure as set forth in claim 4 in which said endless path has a length which ranges between 2 and 7 times its original length.
Claim 8
Dependent Claim
32 words
A belt structure as set forth in claim 4 having a tensile strength generally of the order of ten times the tensile strength of said member due to said oriented crystalline structure.
Claim 9
Dependent Claim
16 words
A belt structure as set forth in claim 4 defined as an entire power transmission belt.
Claim 10
Dependent Claim
38 words
A belt structure as set fort in claim 4 defined as a load-carrying section of an endless power transmission belt and further comprising a tension section and a compression section bonded on opposite sides of said load-carrying section.
Claim 11
Dependent Claim
37 words
A belt structure as set forth in claim 8 in which said tension and compression sections comprise rubber compounds and further comprising adhesive means bonding said tension and compression sections on opposite sides of said load-carrying section.
Claim 12
Dependent Claim
22 words
A belt structure as set forth in claim 9 in which said adhesive means is in the form of an isocyanate adhesive.
Claim 13
Dependent Claim
21 words
A belt structure as set forth in claim 4 in which said oriented crystalline structure is completely free of fused areas.
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) | 1980-03-21 | 1980-09-20 | 1981-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-21 | 1984-09-20 | 1985-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-21 | 1988-09-20 | 1989-03-22 | $7700.00 | Window Closed / Lapsed |