Patent US5563587A successfully refreshed from Google Patents.
Patent US3738859A successfully refreshed from Google Patents.
US3738859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor belting
Assignee: JH Fenner and Co Ltd
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Filing: 1971-02-03
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Granted: 1973-06-12
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Expires: 1991-02-03
Abstract
Abstract CONVEYOR BELTING COMPRISING A TEXTILE CARCASS IMPREGNATED WITH POLYVINYL CHLORIDE, AN INNER LAYER OF POLYVINYL CHLORIDE OR OTHER THERMOPLASTICS MATERIAL COVERING THE IMPREGNATED TEXTILE CARCASS AND AN OUTER LAYER OF A NATURAL OR SYNTHETIC RUBBER COVERING THE INNER LAYER, THE RUBBER BEING SO COMPOUNDED THAT UNDERR THE ACTION OF HEAT GENERATED BY FRICTION AT THE OUTER SURFACE OF THE BELT, THE RUBBER LAYER BECOMES DETACHED FROM THE TEXTILE CARCASS.
Inventors
- 👤 A Anderson
- 👤 M Roberts
- 👤 P Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:21
CPC Classifications
B; B32; B32B; B32B25/00; B32B25/04; B32B25/08; B29; B29D; B29D29/00; B29D29/06; B32B25/14; B32B27/00; B32B27/12; B32B27/30; B32B27/304; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2433/00; B32B2433/02; Y; Y10; Y10S; Y10S198/00; Y10S198/957; Y10T; Y10T156/00; Y10T156/11; Y10T156/1153
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |