US3368664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor belt with improved troughing characteristics
Assignee: Hewitt Robins Inc
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Filing: 1966-10-04
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Granted: 1968-02-13
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Expires: 1986-10-04
Abstract
No abstract record available.
Inventors
- 👤 Clayton H Skinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:39
CPC Classifications
B; B65; B65G; B65G15/00; B65G15/30; B65G15/32; B65G15/34; B65G15/08; B65G2201/00; B65G2201/04; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A CONVEYOR BELT ADAPTED TO BE FLEXED IN A LONGITUDINALLY EXTENDING HINGE AREA FORMED BY ADJACENT IDLER ROLLER INCLINED RELATIVE EACH OTHER WHEN THE BELT IS SHAPED AS A TROUGH BY TROUGHING IDLER ROLL UNITS, SAID CONVEYOR BELT COMPRISING WARP STRANDS EXTENDING LONGITUDINALLY WITHIN THE BELT, WEFT THREADS MAINTAINING THE WARP STRANDS IN SIDE BY SIDE RELATIONSHIP, THE NUMBER OF WARP STRANDS IN SAID HINGE AREA BEING GREATER AND SPACED MORE CLOSELY ADJACENT EACH OTHER THAN IN OTHER TRANSVERSE PORTIONS OF THE BELT, AND PLASTIC MATERIAL FILLING THE INTERSTICES BETWEEN SAID WARP STRANDS AND SAID WEFT THREADS AND PROVIDING A COVERING FOR THE WARP STRANDS AND THE WEFT THREADS.
Claim 2
Dependent Claim
109 words
A CONVEYOR BELT ADAPTED TO BE FLEXED IN A LONGITUDINALLY EXTENDING HINGE AREA FORMED BY ADJACENT IDLER ROLLER INCLINED RELATIVE EACH OTHER WHEN THE BELT IS SHAPED AS A TROUGH BY TROUGHING IDLER ROLL UNITS, SAID CONVEYOR BELT COMPRISING WARP STRANDS EXTENDING LONGITUDINALLY WITHIN THE BELT, WEFT THREADS MAINTAINING THE WARP STRANDS IN SIDE BY SIDE RELATIONSHIP, THE NUMBER OF WARP STRANDS IN SAID HINGE AREA BEING GREATER AND SPACED MORE CLOSELY ADJACENT EACH OTHER THAN IN OTHER TRANSVERSE PORTIONS OF THE BELT, AND PLASTIC MATERIAL FILLING THE INTERSTICES BETWEEN SAID WARP STRANDS AND SAID WEFT THREADS AND PROVIDING A COVERING FOR THE WARP STRANDS AND THE WEFT THREADS.
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) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |