Patent US4573340A successfully refreshed from Google Patents.
Patent US3091129A successfully refreshed from Google Patents.
US3091129A
Expired / Lapsed
US
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Chain and sprocket drive structure
Assignee: Individual
•
Filing: 1961-03-03
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Granted: 1963-05-28
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Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
- 👤 Georges Henri N Bessette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:19
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/02; F16H55/30; F16H55/303; A; A01; A01K; A01K1/00; A01K1/01; A01K1/0128; B; B65; B65G; B65G23/00; B65G2812/00; B65G2812/02; B65G2812/02267; B65G2812/02277; B65G2812/02287; B65G2812/02306
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
162 words
IN COMBINATION, A CHAIN COMPOSED OF A PLURALITY OF INTERCHANGEABLE LINKS ARRANGED IN SUCCESSION, EACH LINK COMPRISING: AN ELONGATED BODY HAVING TWO ENDS OF SUBSTANTIALLY EQUAL CIRCULAR CROSS-SECTIONS; ONE OF SAID ENDS CURVING UPWARDLY AND BACKWARDLY OVER SAID BODY THROUGH AND ARC OF APPROXIMATELY 180* TO FORM A HOOK; THE OTHER OF SAID ENDS CURVING LATERALLY AND BACKWARDLY OVER SAID BODY THROUGH AN ARC OF APPROXIMATELY 180* TO FORM ANOTHER HOOK; THE INNER DIAMETER OF SAID ARCS BEING AT LEAST AS GREAT AS THE DIAMETER OF THE CIRCULAR CROSS-SECTIONS; SAID END CURVING UPWARDLY EXTENDING GENERALLY IN A VERTICAL PLANE; SAID BODY HAVING A CENTRAL PORTION PROVIDED WITH A FLAT TOP SURFACE NORMAL TO SAID VERTICAL PLANE AND INCLINED IN RELATION TO A LINE JOINING THE CENTERS OF THE ARCS; A SPROCKET WHEEL FOR SAID CHAIN COMPRISING: A QUADRILATERAL BODY HAVING A PREDETERMINED THICKNESS DEFINING EDGE LATERAL SURFACES; RECESSES CUT-OUT OF EACH CORNER OF SAID BODY THROUGH SAID LATERAL SURFACES AND DEFINING THERE-
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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) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |