US3924482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endless power transmission belt and method of making same
Assignee: Dayco Products LLC
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Filing: 1974-01-10
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Granted: 1975-12-09
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Expires: 1994-01-10
Abstract
Abstract An endless power transmission belt and method of making same is provided wherein such belt has a belt body and a woven cover therefor in the form of an elongated strip having warps and wefts therein with the warps extending parallel to the length of the strip and the strip being helically wrapped around the body so that the strip and thus its warps are arranged at an angle relative to a central longitudinal axis through the belt to provide the woven cover as a bias cover which is in a relaxed or unstressed condition.
Inventors
- 👤 Roger D Meadows
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:19
CPC Classifications
F; F16; F16G; F16G5/00; F16G5/04; F16G5/06; F16G5/08
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
84 words
An endless power transmission belt having a belt body and a woven cover therefor in the form of an elongated strip having warps and wefts therein, said warps extending parallel to the length of said strip, said strip being disposed in a helical pattern around said body so that said strip and thus its warps are arranged at an angle relative to a central longitudinal axis through said belt to provide said woven cover as a bias cover which is in a relaxed condition.
Claim 2
Dependent Claim
84 words
An endless power transmission belt having a belt body and a woven cover therefor in the form of an elongated strip having warps and wefts therein, said warps extending parallel to the length of said strip, said strip being disposed in a helical pattern around said body so that said strip and thus its warps are arranged at an angle relative to a central longitudinal axis through said belt to provide said woven cover as a bias cover which is in a relaxed condition.
Claim 3
Dependent Claim
50 words
A belt as set forth in claim 1 wherein said warps are arranged at said angle with said central longitudinal axis, said wefts are arranged at an angle relative to said warps which Is two times said angle, and said warps and wefts are arranged symmetrically relative to said axis.
Claim 4
Dependent Claim
84 words
An endless power transmission belt having an elastomeric belt body and a woven cover in the form of an elongated strip having warps and wefts therein, said warps extending parallel to the length of said strip, said strip being disposed in a helical pattern around said body so that said strip and thus its warps are arranged at an angle relative to a central longitudinal axis through said belt to provide said woven cover as a bias cover which is in a relaxed condition.
Claim 5
Dependent Claim
84 words
An endless power transmission belt having an elastomeric belt body and a woven cover in the form of an elongated strip having warps and wefts therein, said warps extending parallel to the length of said strip, said strip being disposed in a helical pattern around said body so that said strip and thus its warps are arranged at an angle relative to a central longitudinal axis through said belt to provide said woven cover as a bias cover which is in a relaxed condition.
Claim 6
Dependent Claim
58 words
A belt as set forth in claim 3 in which said strip is disposed with an overlap between adjoining turns and the width of said strip is determined by the formula S P sin theta + 0; where S actual strip width P perimeter of body cross section theta said angle relative to said axis 0 strip overlap
Claim 7
Dependent Claim
19 words
A belt as set forth in claim 4 in which said woven cover is impregnated with an elastomeric material.
Claim 8
Dependent Claim
32 words
A belt as set forth in claim 4 wherein said cover is a double thickness cover and the width of said strip is determined by the formula S 2 P sin theta
Claim 9
Dependent Claim
33 words
A belt as set forth in claim 4 in which said elastomeric body comprises an outer tension section, an inner compression section, and a load-carrying section arranged between said tension and compression sections.
Claim 10
Dependent Claim
26 words
A belt as set forth in claim 7 in which said load-carrying section is made of a load-carrying cord which is disposed in a helical pattern.
Claim 11
Dependent Claim
18 words
A belt as set forth in claim 7 in which said body has a substantially trapezoidal cross-sectional configuration.
Claim 12
Dependent Claim
54 words
A belt as set forth in claim 4 wherein said warps are arranged at said angle theta relative to said central longitudinal axis, said wefts are arranged at an angle relative to said warps which is two times said angle theta , and said warps and wefts are symmetrically arranged relative to said axis.
Claim 13
Dependent Claim
80 words
A belt as set forth in claim 10 in which said woven cover is a square-woven cover with said warps and wefts arranged at an angle of substantially 90* to each other, said warps are arranged at said angle theta having a value of 45* with said central axis, said wefts are arranged 90* relative to said warps, and said warps and wefts are symmetrically arraanged on opposite sides of said axis each at an angle of roughly 45* therewith.
Claim 14
Dependent Claim
30 words
A belt as set forth in claim 10 in which said woven cover is a stress-relieved cover and woven at an angle other than 90* between its warps and wefts.
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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) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |