Patent US2071762A successfully refreshed from Google Patents.
US3869933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structures of reinforced elastomeric material
Assignee: Goodyear Tire and Rubber Co
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Filing: 1973-11-02
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Granted: 1975-03-11
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Expires: 1993-11-02
Abstract
Abstract A V-belt construction in which the tensile or strength member extending longitudinally of the belt is positioned centrally of the belt section. This permits the individual belts to be cut from the vulcanized slab without waste by alternating angle cuts so that the belts are alternately right side and wrong side out. The wrong side out belts are then merely turned inside out to provide the finished belts. Substantially all waste is eliminated in making belts by this method.
Inventors
- 👤 Marvin L Dorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:28
CPC Classifications
F; F16; F16G; F16G5/00; F16G5/12; F16G5/14; B; B29; B29D; B29D29/00; B29D29/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
97 words
An endless V-belt structure having top and bottom surfaces and side driving faces extending therebetween, said belt comprising a body portion of elastomeric material and having a tension member therein midway between the top and bottom surfaces of said belt and at least one fabric reinforcing layer symmetrically positioned on each side of said tension member between said tension member and the top and bottom surfaces of said belt, said reinforcing layers having high compressive and tensile moduli in the transverse direction of the belt whereby the V-belt is of a symmetrical construction about said tension member.
Claim 2
Dependent Claim
97 words
An endless V-belt structure having top and bottom surfaces and side driving faces extending therebetween, said belt comprising a body portion of elastomeric material and having a tension member therein midway between the top and bottom surfaces of said belt and at least one fabric reinforcing layer symmetrically positioned on each side of said tension member between said tension member and the top and bottom surfaces of said belt, said reinforcing layers having high compressive and tensile moduli in the transverse direction of the belt whereby the V-belt is of a symmetrical construction about said tension member.
Claim 3
Dependent Claim
97 words
An endless V-belt structure having top and bottom surfaces and side driving faces extending therebetween, said belt comprising a body portion of elastomeric material and having a tension member therein midway between the top and bottom surfaces of said belt and at least one fabric reinforcing layer symmetrically positioned on each side of said tension member between said tension member and the top and bottom surfaces of said belt, said reinforcing layers having high compressive and tensile moduli in the transverse direction of the belt whereby the V-belt is of a symmetrical construction about said tension member.
Claim 4
Dependent Claim
97 words
An endless V-belt structure having top and bottom surfaces and side driving faces extending therebetween, said belt comprising a body portion of elastomeric material and having a tension member therein midway between the top and bottom surfaces of said belt and at least one fabric reinforcing layer symmetrically positioned on each side of said tension member between said tension member and the top and bottom surfaces of said belt, said reinforcing layers having high compressive and tensile moduli in the transverse direction of the belt whereby the V-belt is of a symmetrical construction about said tension member.
Claim 5
Dependent Claim
33 words
A belt as claimed in claim 1 in which the top and bottom surfaces of the belt are formed of at least one ply of fabric stretchable along the length of the belt.
Claim 6
Dependent Claim
25 words
A belt as claimed in claim 1 in which at least a portion of the body of said belt is formed of fiber-loaded elastomeric material.
Claim 7
Dependent Claim
26 words
A belt as claimed in claim 1 in which the tension member is formed of a continuous helically wound cord positioned between the fabric reinforcing layers.
Claim 8
Dependent Claim
25 words
A belt as claimed in claim 1 in which said reinforcing layers are formed of heat treated filamentary material extending substantially transversely of the belt.
Claim 9
Independent Claim
131 words
The method of making an endless V-belt structure having top and bottom surfaces and side driving faces extending therebetween, said method comprising the steps of forming a sleeve on a mandrel, vulcanizing said sleeve and cutting said sleeve to form the V-belts, said sleeve being of symmetrical construction throughout its thickness and formed of a layer of elastomeric material, a strength member positioned on said elastomeric material and having a fabric reinforcing layer symmetrically arranged on each side thereof, the reinforcing members having high compression and tension moduli in the longitudinal direction of said sleeve, and a second layer of elastomeric material of substantially the same thickness as said first layer positioned over said strength member whereby the strength member lies midway between the inner and outer surfaces of said sleeve.
Claim 10
Independent Claim
131 words
The method of making an endless V-belt structure having top and bottom surfaces and side driving faces extending therebetween, said method comprising the steps of forming a sleeve on a mandrel, vulcanizing said sleeve and cutting said sleeve to form the V-belts, said sleeve being of symmetrical construction throughout its thickness and formed of a layer of elastomeric material, a strength member positioned on said elastomeric material and having a fabric reinforcing layer symmetrically arranged on each side thereof, the reinforcing members having high compression and tension moduli in the longitudinal direction of said sleeve, and a second layer of elastomeric material of substantially the same thickness as said first layer positioned over said strength member whereby the strength member lies midway between the inner and outer surfaces of said sleeve.
Claim 11
Dependent Claim
23 words
The method as claimed in claim 6 in which a layer of stretchable fabric forms the inner and outer surface of said sleeve.
Claim 12
Dependent Claim
41 words
The method as claimEd in claim 6 in which the vulcanized sleeve is cut at an angle with the alternate cuts being at same but opposite angle to the surface of the sleeve to form the driving faces of the V-belt.
Claim 13
Dependent Claim
53 words
The method as claimed in claim 8 in which the cuts are equally spaced at the center of the strength member whereby every other belt is right side out and the alternate belts must be turned inside out for the operating position and then are substantially identical to the right side out belts.
References Cited (Backward Citations)
US2442037A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |