US4299588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endless power transmission belt
Assignee: Dayco Products LLC
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Filing: 1979-12-17
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Granted: 1981-11-10
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Expires: 1999-12-17
Abstract
Abstract A raw-edge, endless power transmission belt is provided which comprises a plurality of layers. At least one of these layers is a fabric layer; another layer is composed primarily of elastomeric material; and at least one further layer is an elastomeric material having a heat-conducting amount of a pyrolytic graphite dispersed therethrough. The pyrolytic graphite-containing elastomeric layer is disposed between any two other layers in the belt and acts to conduct heat to the outside of the belt. Also provided is a method for making this belt.
Inventors
- 👤 Paul M. Standley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:11
CPC Classifications
F; F16; F16G; F16G5/00; F16G5/04; F16G5/06; F16G5/08; F16G5/20
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
106 words
A raw edge, endless power transmission belt having a tension section, a compression section and a load-carrying section therebetween, said belt comprising a plurality of layers, wherein at least one of said layers is a fabric layer, at least one other of said layers is composed primarily of elastomeric material and at least one further of said layers is an elastomeric material having a heat-conducting amount of a pyrolytic graphite dispersed uniformly therethrough wherein said pyrolytic graphite is oriented in said further layer in a direction approximately transverse to the longitudinal axis of said belt to thereby conduct heat to the side edges of the belt.
Claim 2
Dependent Claim
106 words
A raw edge, endless power transmission belt having a tension section, a compression section and a load-carrying section therebetween, said belt comprising a plurality of layers, wherein at least one of said layers is a fabric layer, at least one other of said layers is composed primarily of elastomeric material and at least one further of said layers is an elastomeric material having a heat-conducting amount of a pyrolytic graphite dispersed uniformly therethrough wherein said pyrolytic graphite is oriented in said further layer in a direction approximately transverse to the longitudinal axis of said belt to thereby conduct heat to the side edges of the belt.
Claim 3
Dependent Claim
21 words
The belt of claim 1 wherein said elastomer/pyrolytic graphite layer is disposed between two of said fabric layers in said belt.
Claim 4
Dependent Claim
23 words
The belt of claim 1 wherein said elastomer/pyrolytic graphite layer is disposed between a fabric layer and an elastomeric layer in said belt.
Claim 5
Dependent Claim
21 words
The belt of claim 1 wherein said elastomer/pyrolytic graphite layer is disposed between two of said elastomeric layers in said belt.
Claim 6
Dependent Claim
34 words
The belt of claim 1 wherein the amount of said pyrolytic graphite in said further layer is in the approximate range of 10 to 100 parts per 100 parts by weight of elastomeric material.
Claim 7
Dependent Claim
28 words
The belt of claim 1 wherein the amount of said pyrolytic graphite in said further layer is about 70 parts per 100 parts by weight of elastomeric material.
Claim 8
Dependent Claim
21 words
The belt of claim 1 wherein the thickness of said further layer is in the approximate range of 0.015- to 0.100-inch.
Claim 9
Dependent Claim
21 words
The belt of claim 1 wherein the thickness of said further layer is in the approximate range of 0.020- to 0.050-inch.
Claim 10
Dependent Claim
29 words
The belt of claim 1 wherein said compression section comprises at least one layer of elastomeric material and wherein said elastomeric material has a plurality of fibers dispersed therethrough.
Claim 11
Dependent Claim
25 words
The belt of claim 1 wherein said load-carrying section comprises load-carrying means in the form of a helically-wound load-carrying cord embedded in an elastomeric cushion.
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) | 1984-11-09 | 1985-05-11 | 1985-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-09 | 1989-05-11 | 1989-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-09 | 1993-05-11 | 1993-11-10 | $7700.00 | Window Closed / Lapsed |