US3800610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heavy duty v-belt
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1972-09-29
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Granted: 1974-04-02
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Expires: 1992-09-29
Abstract
Abstract A heavy-duty V-belt is characterized by envelope construction enclosing a stiff fiber-loaded compression section and molded-in transverse corrugations on the inside surface having a depth at the longitudinal center of the belt greater than the envelope material thickness and tapering into the sides of the belt to a depth at least equal to the envelope thickness.
Inventors
- 👤 A Wach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:52
CPC Classifications
B; B32; B32B; B32B25/00; B32B25/04; B32B25/042; F; F16; F16G; F16G5/00; F16G5/04; F16G5/06; B32B25/10; F16G5/16; F16G5/166; F16G5/20; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/048; B32B2305/00; B32B2305/08; B32B2305/10; B32B2305/18; B32B2433/00; B32B2433/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
125 words
An arched transverse section, low-ratio top width to thickness V-type belt exhibiting longitudinal and travsverse stiffness comprising: a. a tension section; b. a substantially inextensible neutral axis section below the tension section; c. a compression section below the neutral axis section; and d. a fabric envelope enclosing the tension, neutral axis, and compression sections, said belt having molded therein a plurality of substantially evenly spaced transverse corrugations on the inside surface thereof having a depth at the longitudinal center of the belt greater than the envelope material thickness and tapering into the sides to a depth at least equal to the envelope material thickness said corrugations effectively relieving the flexure stresses at the bottom of the compression section without adding appreciable flexibility to the belt.
Claim 2
Dependent Claim
125 words
An arched transverse section, low-ratio top width to thickness V-type belt exhibiting longitudinal and travsverse stiffness comprising: a. a tension section; b. a substantially inextensible neutral axis section below the tension section; c. a compression section below the neutral axis section; and d. a fabric envelope enclosing the tension, neutral axis, and compression sections, said belt having molded therein a plurality of substantially evenly spaced transverse corrugations on the inside surface thereof having a depth at the longitudinal center of the belt greater than the envelope material thickness and tapering into the sides to a depth at least equal to the envelope material thickness said corrugations effectively relieving the flexure stresses at the bottom of the compression section without adding appreciable flexibility to the belt.
Claim 3
Dependent Claim
20 words
The belt of claim 1, wherein the corrugations are within the range of 10-35 percent of the total belt thickness.
Claim 4
Dependent Claim
20 words
The belt of claim 1, wherein the compression section comprises a fiber-loaded rubber to provide transverse stiffness to the belt.
Claim 5
Dependent Claim
14 words
The belt of claim 3, wherein the envelope is a tire cord rubber-impregnated fabric.
Claim 6
Dependent Claim
13 words
The belt of claim 3, wherein the envelope is a square-woven, rubber-impregnated fabric.
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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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |