US4209089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite feeder belt
Assignee: Rubber Millers Inc
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Filing: 1978-10-06
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Granted: 1980-06-24
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Expires: 1998-10-06
Abstract
Abstract An improved composite feeder belt for use in transporting and handling minerals or the like wherein the belt is comprised of a low modulus, abrasion resistant urethane containing a reinforcement of free floating, spaced encapsulated yarns. The yarns are woven in the form of a scrim and are treated to prevent penetration of the liquid urethane into the filament bundles during manufacture of the belt and also to inhibit adhesion of the urethane to the yarns.
Inventors
- 👤 John T. Day
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:23
CPC Classifications
F; F16; F16G; F16G1/00; F16G1/06; F16G1/08; F16G1/10; B; B65; B65G; B65G15/00; B65G15/30; B65G15/32; B65G15/34; B65G2201/00; B65G2201/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/3158; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/109; Y10T442/131; Y10T442/184; Y10T442/198
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
32 words
A feeder belt for transporting and handling minerals and the like comprising a urethane body having a free floating reinforcement encapsulated therein extending generally along the line of travel of said belt.
Claim 2
Dependent Claim
32 words
A feeder belt for transporting and handling minerals and the like comprising a urethane body having a free floating reinforcement encapsulated therein extending generally along the line of travel of said belt.
Claim 3
Dependent Claim
19 words
The feeder belt of claim 1 wherein said reinforcement is comprised of a plurality of longitudinally spaced fiber bundles.
Claim 4
Dependent Claim
12 words
The feeder belt of claim 1 wherein said reinforcement is a scrim.
Claim 5
Dependent Claim
23 words
The feeder belt of claim 2 wherein said fiber bundles are treated with means for inhibiting adhesion of said urethane to said bundles.
Claim 6
Dependent Claim
23 words
The feeder belt of claim 4 wherein said means for treating said fiber bundles is a polyvinyl chloride plasticized with a dioctyl phosphate.
Claim 7
Dependent Claim
22 words
The feeder belt of claim 3 wherein said scrim is treated with means for inhibiting adhesion of said urethane to said scrim.
Claim 8
Dependent Claim
22 words
The feeder belt of claim 6 wherein said means for treating said scrim is a polyvinyl chloride plasticized with a dioctyl phosphate.
Claim 9
Dependent Claim
48 words
A feeder belt for transporting and handling minerals and the like comprised of a body comprised of a prepolymer, toluene diisocyanate polyethylene adipate aduct reacted with a curative, 4,4'-methylene-bis (2-chloroaniline), and a free floating reinforcement of spaced, encapsulated fibers, said fibers being treated with a polyvinyl chloride resin.
Claim 10
Dependent Claim
48 words
A feeder belt for transporting and handling minerals and the like comprised of a body comprised of a prepolymer, toluene diisocyanate polyethylene adipate aduct reacted with a curative, 4,4'-methylene-bis (2-chloroaniline), and a free floating reinforcement of spaced, encapsulated fibers, said fibers being treated with a polyvinyl chloride resin.
Claim 11
Dependent Claim
25 words
The feeder belt of claim 8 wherein the proportion of curative to prepolymer ranges from 6 to 9 parts of curative to 100 parts prepolymer.
Claim 12
Dependent Claim
20 words
The feeder belt of claim 9 wherein the encapsulated fiber is treated with a polyvinyl chloride plasticized with dioctyl phosphate.
Claim 13
Dependent Claim
17 words
The feeder belt of claim 10 wherein said encapsulated fibers are in the form of a scrim.
Claim 14
Dependent Claim
18 words
The feeder belt of claim 10 wherein said encapsulated fibers are in the form of a non-woven fabric.
Claim 15
Dependent Claim
18 words
The feeder belt of claim 10 wherein said encapsulated fibers are in the form of a metallic mesh.
Claim 16
Dependent Claim
15 words
The feeder belt of claim 4 wherein said encapsulated fiber bundles comprise a non-woven fabric.
Claim 17
Dependent Claim
15 words
The feeder belt of claim 4 wherein said encapsulated fiber bundles comprise a metallic mesh.
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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) | 1983-06-24 | 1983-12-24 | 1984-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-24 | 1987-12-24 | 1988-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-24 | 1991-12-24 | 1992-06-24 | $7700.00 | Window Closed / Lapsed |