Patent US3237757A successfully refreshed from Google Patents.
US3237757A
Expired / Lapsed
US
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Conveyor belt
Assignee: Raymark Industries Inc
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Filing: 1963-09-03
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Granted: 1966-03-01
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Expires: 1983-09-03
Abstract
No abstract record available.
Inventors
- 👤 Wilder E Perkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:41
CPC Classifications
B; B65; B65G; B65G15/00; B65G15/30; B65G15/32; B65G15/42; B65G2201/00; B65G2201/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A CONVEYOR BELT HAVING A SURFACE OF AN ELASTOMERIC MATERIAL MOLDED TO PROVIDE PARALLEL RIBS EXTENDING TRANSVERSELY OF THE BELT, THE MOLDED MATERIAL BEING FORMULATED TO BEND UNDER THE ANTICIPATED LOAD, SAID RIBS BEING GENERALLY RECTANGULAR IN CROSS-SECTION EXCEPT AT THE TOP WHERE THE CROSS-SECTION IS AN INVERTED BLUNT V, SO THAT WHETHER UPRIGHT OR BENT A RIB PRESENTS A CORNER TO THE BOTTOM OF A LOAD RESTING THEREON.
Claim 2
Dependent Claim
69 words
A CONVEYOR BELT HAVING A SURFACE OF AN ELASTOMERIC MATERIAL MOLDED TO PROVIDE PARALLEL RIBS EXTENDING TRANSVERSELY OF THE BELT, THE MOLDED MATERIAL BEING FORMULATED TO BEND UNDER THE ANTICIPATED LOAD, SAID RIBS BEING GENERALLY RECTANGULAR IN CROSS-SECTION EXCEPT AT THE TOP WHERE THE CROSS-SECTION IS AN INVERTED BLUNT V, SO THAT WHETHER UPRIGHT OR BENT A RIB PRESENTS A CORNER TO THE BOTTOM OF A LOAD RESTING THEREON.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |