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Patent US3301383A successfully refreshed from Google Patents.
US3301383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trough-shaped conveyor belt
Assignee: Individual
•
Filing: 1965-08-02
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Granted: 1967-01-31
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Expires: 1985-08-02
Abstract
No abstract record available.
Inventors
- 👤 Doyer Cornelis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:05
CPC Classifications
B; B65; B65G; B65G39/00; B65G39/02; B65G39/07; B65G39/073
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A TROUGH-SHAPED CONVEYOR COMPRISING A BELT SUPPORTED BY A PLURALITY OF SPACED ROLLERS, SAID BELT BEING SUPPORTED OVER ITS ENTIRE WIDTH BY EACH OF SAID ROLLERS, AND EACH ROLLER INCLUDING A SHAFT AND A BELT SUPPORTING PORTION HAVING THE CONFIGURATION OF A HYPERBOLOID OF REVOLUTION FORMED BY A PLURALITY OF STRAIGHT RODS ALL OF WHICH
Claim 2
Dependent Claim
55 words
A TROUGH-SHAPED CONVEYOR COMPRISING A BELT SUPPORTED BY A PLURALITY OF SPACED ROLLERS, SAID BELT BEING SUPPORTED OVER ITS ENTIRE WIDTH BY EACH OF SAID ROLLERS, AND EACH ROLLER INCLUDING A SHAFT AND A BELT SUPPORTING PORTION HAVING THE CONFIGURATION OF A HYPERBOLOID OF REVOLUTION FORMED BY A PLURALITY OF STRAIGHT RODS ALL OF WHICH
References Cited (Backward Citations)
US780145A
Cited
US2916064A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |