Patent US3208305A successfully refreshed from Google Patents.
US3208305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power transmission
Assignee: Individual
•
Filing: 1961-10-02
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Granted: 1965-09-28
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Expires: 1981-10-02
Abstract
No abstract record available.
Inventors
- 👤 Galen P Butterbaugh
- 👤 Esley F Salsbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:17
CPC Classifications
F; F16; F16H; F16H37/00; F16H37/02; F16H37/06; F16H37/08; F16H37/0833; F16H37/084; F16H37/0846; F16H1/00; F16H1/02; F16H1/04; F16H1/12; F16H1/16; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19828
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
IN A DIFFERENTIAL OF THE TYPE HAVING A WORM AND A WORM GEAR CONTAINED IN A HOUSING, THE IMPROVEMENT COMPRISING; A TUBULAR WORM ROTATABLY SUPPORTED IN BEARING AT ITS OPPOSITE ENDS WITHIN THE HOUSING, SAID WORM ALONG AT LEAST A PORTION OF ITS LENGTH HAVING LONGITUDINALLYEXTENDING INTERNAL GROOVES; A DIFFERENTIAL INPUT SHAFT EXTENDING THROUGH THE WORM WITH EXTERNAL SPLINES ON THE INPUT SHAFT SEATING IN THE INTERNAL GROOPES IN THE TUBULAR WORM, SAID DIFFERENTIAL INPUT SHAFT BEING REMOVABLE FROM THE WORM AND DIFFERENTIAL WITHOUT DISTURBING THE WORM IN IS RELATION TO THE WORM GEAR; AND SAID INPUT SHAFT AT ONE END OF THE TUBULAR WORM HAVING A LOCKING MEANS ENGAGING SAID ONE END OF THE WORM TO FORESTALL REMOVAL OF THE SHAFT, AND SAID SHAFT AT THE OPPOSITE END OF THE TUBULAR WORM HAVING AN ENLARGED PORTION THAT ENGAGES SAID OPPOSITE END OF THE WORM, SAID SHAFT BEING REMOVABLE FROM SAID OPPOSITE END OF THE TUBULAR WORM UPON DISENGAGING SAID LOCKING MEANS.
Claim 2
Dependent Claim
162 words
IN A DIFFERENTIAL OF THE TYPE HAVING A WORM AND A WORM GEAR CONTAINED IN A HOUSING, THE IMPROVEMENT COMPRISING; A TUBULAR WORM ROTATABLY SUPPORTED IN BEARING AT ITS OPPOSITE ENDS WITHIN THE HOUSING, SAID WORM ALONG AT LEAST A PORTION OF ITS LENGTH HAVING LONGITUDINALLYEXTENDING INTERNAL GROOVES; A DIFFERENTIAL INPUT SHAFT EXTENDING THROUGH THE WORM WITH EXTERNAL SPLINES ON THE INPUT SHAFT SEATING IN THE INTERNAL GROOPES IN THE TUBULAR WORM, SAID DIFFERENTIAL INPUT SHAFT BEING REMOVABLE FROM THE WORM AND DIFFERENTIAL WITHOUT DISTURBING THE WORM IN IS RELATION TO THE WORM GEAR; AND SAID INPUT SHAFT AT ONE END OF THE TUBULAR WORM HAVING A LOCKING MEANS ENGAGING SAID ONE END OF THE WORM TO FORESTALL REMOVAL OF THE SHAFT, AND SAID SHAFT AT THE OPPOSITE END OF THE TUBULAR WORM HAVING AN ENLARGED PORTION THAT ENGAGES SAID OPPOSITE END OF THE WORM, SAID SHAFT BEING REMOVABLE FROM SAID OPPOSITE END OF THE TUBULAR WORM UPON DISENGAGING SAID LOCKING MEANS.
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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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |