US4270656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber and fabric feed belt
Assignee: World Properties Inc
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Filing: 1977-10-11
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Granted: 1981-06-02
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Expires: 1997-10-11
Abstract
Abstract A construction and method of manufacture of a feed belt are presented wherein the belt is an endless body of elastomeric material reinforced with a fabric sleeve and having a toothed inner surface and a non-toothed outer surface, the inner and outer surfaces being treated so that the outer surface has a significantly higher coefficient of friction than the inner surface.
Inventors
- 👤 Alec D. Chesmer
- 👤 Joseph Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:23
CPC Classifications
B; B65; B65H; B65H5/00; B65H5/02; B65H5/021; B65G; B65G15/00; B65G15/30; B65G15/32; B65G15/42; B65G2201/00; B65G2201/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
118 words
A feed belt comprising: an endless band of elastomeric material having an inner surface and an outer surface; reinforcing means embedded in said band of elastomeric material, said reinforcing means comprising fabric material positioned at the pitch line of the belt; a plurality of teeth spaced about said inner surface of said belt, said teeth being formed from said elastomeric material and being integral with said band, said reinforcing means being exposed in the spaces between said teeth; and a surface layer on said teeth, said surface layer being formed from said elastomeric material and having a coefficient of friction which is less than the coefficient of friction of the outer surface of said band of elastomeric material.
Claim 2
Dependent Claim
118 words
A feed belt comprising: an endless band of elastomeric material having an inner surface and an outer surface; reinforcing means embedded in said band of elastomeric material, said reinforcing means comprising fabric material positioned at the pitch line of the belt; a plurality of teeth spaced about said inner surface of said belt, said teeth being formed from said elastomeric material and being integral with said band, said reinforcing means being exposed in the spaces between said teeth; and a surface layer on said teeth, said surface layer being formed from said elastomeric material and having a coefficient of friction which is less than the coefficient of friction of the outer surface of said band of elastomeric material.
Claim 3
Dependent Claim
18 words
The feed belt of claim 1 wherein said reinforcing means is in the form of an endless band.
Claim 4
Dependent Claim
29 words
The feed belt of claim 2 wherein said elastomeric material is selected from the group comprising polyisoprene rubber, natural rubber, butadiene polymers, butadiene copolymers, styrene polymers and styrene copolymers.
Claim 5
Dependent Claim
19 words
A feed belt as in claim 1 wherein said surface layer comprises a halogenated layer of the elastomeric material.
Claim 6
Dependent Claim
40 words
The feed belt of claim 1 wherein said surface layer has a coefficient of friction of less than 1.0 and wherein the outer surface of said endless band of elastomeric material has a coefficient of friction in excess of 2.0.
Claim 7
Dependent Claim
19 words
A feed belt as in claim 5 wherein said surface layer comprises a halogenated layer of the elastomeric material.
Claim 8
Dependent Claim
40 words
The feed belt of claim 2 wherein said surface layer has a coefficient of friction of less than 1.0 and wherein the outer surface of said endless band of elastomeric material has a coefficient of friction in excess of 2.0.
Claim 9
Dependent Claim
19 words
A feed belt as in claim 7 wherein said surface layer comprises a halogenated layer of the elastomeric material.
Claim 10
Dependent Claim
29 words
The feed belt of claim 8 wherein said elastomeric material is selected from the group comprising polyisoprene rubber, natural rubber, butadiene polymers, butadiene copolymers, styrene polymers and styrene copolymers.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-06-01 | 1984-12-01 | 1985-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-01 | 1988-12-01 | 1989-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-01 | 1992-12-01 | 1993-06-02 | $7700.00 | Window Closed / Lapsed |