US4575366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tension mechanism for αbelt drive apparatus
Assignee: Citizen Watch Co Ltd
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Filing: 1985-03-13
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Granted: 1986-03-11
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Expires: 2005-03-13
Abstract
Abstract A tension mechanism for an αbelt drive apparatus comprising an αbelt which is wound around a drive pulley, the one end of which is fixed to a carriage and the end of which is formed an engaging portion, and a lever which is rotatingly and pivotally supported on the part of the carriage and forms a short hand portion having a stopper on its tip end to engage with the engaging portion and a long hand portion being urged on its tip end to be stopped at the part of the carriage. The lever above mentioned is rotated and stopped on its tip end of the long hand portion at the part of the carriage so that the αbelt can be applied a tension force.
Inventors
- 👤 Yoshiyuki Ohishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:46
CPC Classifications
F; F16; F16H; F16H19/00; F16H19/02; F16H19/06; F16H19/0672
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
128 words
A tension mechanism for an α belt drive apparatus comprising: an α belt which is wound around a drive pulley, the one end of which is fixed to a carriage and the other end of which is formed an engaging portion; and a lever which is rotatingly and pivotally supported on the part of the carriage, and forms a short hand portion having a stopper on its tip end to engage with said engaging portion and a long hand portion being urged on its tip end to be stopped at the part of the carriage, wherein said lever is rotated and stopped on its tip end of said long hand portion at the part of the carriage so that said α belt can be applied a tension force.
Claim 2
Dependent Claim
128 words
A tension mechanism for an α belt drive apparatus comprising: an α belt which is wound around a drive pulley, the one end of which is fixed to a carriage and the other end of which is formed an engaging portion; and a lever which is rotatingly and pivotally supported on the part of the carriage, and forms a short hand portion having a stopper on its tip end to engage with said engaging portion and a long hand portion being urged on its tip end to be stopped at the part of the carriage, wherein said lever is rotated and stopped on its tip end of said long hand portion at the part of the carriage so that said α belt can be applied a tension force.
Claim 3
Dependent Claim
38 words
A tension mechanism for an α belt drive apparatus according to claim 1 wherein a projected portion is formed with the part of the carriage for stabilizing the α belt to suppress the unsteady movement at this portion.
Claim 4
Dependent Claim
40 words
A tension mechanism for an α belt drive apparatus according to claims 1 or 2 wherein, at least one end of the α belt is detachably hooked on a pin provided on the part of the carriage or the lever.
Claim 5
Dependent Claim
23 words
A tension mechanism for an α belt drive apparatus according to claims 1 or 2 wherein the lever is composed of substantial L-shape.
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) | 1989-03-10 | 1989-09-09 | 1990-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-10 | 1993-09-09 | 1994-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-10 | 1997-09-09 | 1998-03-11 | $7700.00 | Window Closed / Lapsed |