Patent US3251235A successfully refreshed from Google Patents.
US3251235A
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Belt bias compensator for magnetic tape drive
Assignee: Midwestern Instruments Inc
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Filing: 1964-01-27
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Granted: 1966-05-17
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Expires: 1984-01-27
Abstract
No abstract record available.
Inventors
- 👤 Howard R Cederberg
- 👤 William C Bortzfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:07
CPC Classifications
F; F16; F16H; F16H7/00; F16H7/08; F16H7/10; F16H7/12; F16H7/1254; F16H7/1281; F16H2007/0802; F16H2007/0808
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN COMBINATION WITH A BELT A PULLEY ASSEMBLY HAVING A CONTINUOUS BELT TRAINED ABOUT A PAIR OF SPACED PULLEYS, A STRUCTURE FOR PREVENTING CREEPAGE OF THE BELT AXIALLY OF THE PULLEYS, SAID STRUCTURE COMPRISING: A SUPPORT; AN AXLE HAVING OPPOSED ENDS; AN ELEMENT ROTATABLY MOUNTED ON SAID AXLE AND CONTACTING ONE FACE OF SAID BELT; AND ADJUSTABLE MEANS SECURING ONE OF AID ENDS TO SAID SUPPORT AND PROVIDING A CANTILEVER MOUNTING FOR SAID AXLE, SAID ADJUSTABLE MEANS MOUNTING SAID AXLE FOR MOVEMENT OF THE OTHER END THEREOF ALONG A PATH OF TRAVEL TO DISPOSE SAID ELEMENT AT INCLINATIONS EFFECTING TWISTING OF SAID BELT IN EITHER DIRECTION WITH RESPECT TO ITS LONGITUDINAL AXIS, AND INCLUDING RELEASABLE HOLDING MEANS ENGAGING SAID AXLE TO SELECTIVELY MAINTAIN SAID ELEMENT AT ANY ONE OF SAID INCLINATIONS.
Claim 2
Dependent Claim
131 words
IN COMBINATION WITH A BELT A PULLEY ASSEMBLY HAVING A CONTINUOUS BELT TRAINED ABOUT A PAIR OF SPACED PULLEYS, A STRUCTURE FOR PREVENTING CREEPAGE OF THE BELT AXIALLY OF THE PULLEYS, SAID STRUCTURE COMPRISING: A SUPPORT; AN AXLE HAVING OPPOSED ENDS; AN ELEMENT ROTATABLY MOUNTED ON SAID AXLE AND CONTACTING ONE FACE OF SAID BELT; AND ADJUSTABLE MEANS SECURING ONE OF AID ENDS TO SAID SUPPORT AND PROVIDING A CANTILEVER MOUNTING FOR SAID AXLE, SAID ADJUSTABLE MEANS MOUNTING SAID AXLE FOR MOVEMENT OF THE OTHER END THEREOF ALONG A PATH OF TRAVEL TO DISPOSE SAID ELEMENT AT INCLINATIONS EFFECTING TWISTING OF SAID BELT IN EITHER DIRECTION WITH RESPECT TO ITS LONGITUDINAL AXIS, AND INCLUDING RELEASABLE HOLDING MEANS ENGAGING SAID AXLE TO SELECTIVELY MAINTAIN SAID ELEMENT AT ANY ONE OF SAID INCLINATIONS.
References Cited (Backward Citations)
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US2349084A
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US3101005A
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US3149497A
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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) | 1969-05-16 | 1969-11-15 | 1970-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-16 | 1973-11-15 | 1974-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-16 | 1977-11-15 | 1978-05-17 | $7700.00 | Window Closed / Lapsed |