US3847029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endless power transmission belt and method of making same
Assignee: Dayco Products LLC
•
Filing: 1972-12-11
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Granted: 1974-11-12
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Expires: 1992-12-11
Abstract
Abstract An endless power transmission belt and method of making same is provided wherein the belt has a body made substantially of a thermoplastic elastomer and the body has a heat-fused area at a location along its endless path which has physical properties which are substantially equal to the physical properties of the remainder of the body.
Inventors
- 👤 R Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:10
CPC Classifications
F; F16; F16G; F16G5/00; F16G5/12; F16G3/00; F16G3/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
119 words
An endless power transmission belt comprising the body made substantially of a thermoplastic polyester elastomer, said body having a pair of spaced integral projections provided at opposite side portions thereof and defining a channel in the outer surface of said body, said belt having load-carrying means integrally bonded within said channel and a heat-fused area at a location along its endless path which has physical properties substantially equal to the physical properties of the remainder of said body, each of said integral projections extending along the entire endless path of said belt and having a substantially uniform cross-sectional configuration at any location along the endless path, and each of said integral projections being heat fused at said heat-fused area.
Claim 2
Dependent Claim
119 words
An endless power transmission belt comprising the body made substantially of a thermoplastic polyester elastomer, said body having a pair of spaced integral projections provided at opposite side portions thereof and defining a channel in the outer surface of said body, said belt having load-carrying means integrally bonded within said channel and a heat-fused area at a location along its endless path which has physical properties substantially equal to the physical properties of the remainder of said body, each of said integral projections extending along the entire endless path of said belt and having a substantially uniform cross-sectional configuration at any location along the endless path, and each of said integral projections being heat fused at said heat-fused area.
Claim 3
Dependent Claim
16 words
A belt as set forth in claim 1 and being made substantially of a polyester elastomer.
Claim 4
Dependent Claim
34 words
A belt as set forth in claim 1 in which said load-carrying means are integrally bonded within said channel-like configuration by another thermoplastic elastomer which is compatible with said thermopalstic elastomer of said body.
Claim 5
Dependent Claim
41 words
A belt as set forth in claim 3 in which said load-carrying means comprises a spirally wound endless cord and wherein said other thermoplastic elastomer serves the dual purpose of bonding said cord and body while serving as a matrix therefor.
Claim 6
Dependent Claim
22 words
A belt as set forth in claim 3 in which said recessed surface has a rectilinear configuration when viewed in cross section.
Claim 7
Dependent Claim
22 words
A belt as set forth in claim 3 in which said recessed surface has an arcuate configuration when viewed in cross section.
Claim 8
Dependent Claim
26 words
A belt as set forth in claim 3 in which said arcuate configuration is convex in the general direction toward the outer ends of said projections.
References Cited (Backward Citations)
GB191324370A
Cited
US2025278A
Cited
US2724974A
Cited
US3023192A
Cited
US3051212A
Cited
US3651014A
Cited
US3687938A
Cited
US3723568A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |