US3227288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Draft gear
Assignee: W H MINER Inc
•
Filing: 1963-07-22
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Granted: 1966-01-04
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Expires: 1983-07-22
Abstract
No abstract record available.
Inventors
- 👤 Harry W Mulcahy
- 👤 William D Wallace
- 👤 Donald R Holm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:06
CPC Classifications
B; B61; B61G; B61G9/00; B61G9/04; B61G9/06; B61G9/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
IN A FRICTION DRAFT GEAR OF THE TYPE WHICH IS CHARACTERIZED BY A GENERALLY HEXAGONAL HOUSING HAVING ONE END PROVIDED WITH A CLOSURE AND AN OPEN OPPOSED END PROVIDED WITH A TAPPERED INTERNAL FRICTION SURFACE OF ROUNDED HEXAGONAL CROSS SECTION, BY A SERIES OF FRICTION SHOES IN THE OPEN END OF SAID HOUSING AND OPERABLY ASSOCIATED WITH SAID FRICTION SURFACE THEREOF, AND BY A WEDGE MEMBER ENGAGEABLE WITH SAID SHOES AND ADAPTED FOR ACTUATING SAME UPON MOVEMENT THEREOF INWARDLY OF SAID HOUSING, THE IMPROVEMENT WHICH COMPRISES, IN COMBINATION THEREWITH, A SERIES OF INTERNAL CIRCUMFERENTIALLY SPACED LONGITUDINALLY EXTENDING GUIDE FORMATIONS HAVING ARCUATE INNER SURFACES FORMED IN SAID HOUSING INWARDLY OF SAID HEXAGONAL FRICTION SURFACE AND DEFINING A NON-CONTINUOUS CYLINDRICAL CONFIGURATION, A TRUNNION WALL SECTION DISPOSED INWARDLY OF AND IMMEDIATELY ADJACENT TO SAID HEXAGON FRICTION SURFACE FOR BLENDING SAME INTO SAID CYLINDRICAL CONFIGURATION, AND A STACK OF CIRCULAR ELASTOMERIC PADS DISPOSED IN SAID HOUSING INWARDLY OF SAID FRICTION SHOES RESISTING INWARD MOVEMENT THEREOF AND BEING GUIDINGLY RETAINED IN STACKED COLUMNAR RELATIONSHIP BY SAID CYLINDRICAL CONFIGURATION DEFINED BY SAID GUIDE FORMATIONS.
Claim 2
Dependent Claim
178 words
IN A FRICTION DRAFT GEAR OF THE TYPE WHICH IS CHARACTERIZED BY A GENERALLY HEXAGONAL HOUSING HAVING ONE END PROVIDED WITH A CLOSURE AND AN OPEN OPPOSED END PROVIDED WITH A TAPPERED INTERNAL FRICTION SURFACE OF ROUNDED HEXAGONAL CROSS SECTION, BY A SERIES OF FRICTION SHOES IN THE OPEN END OF SAID HOUSING AND OPERABLY ASSOCIATED WITH SAID FRICTION SURFACE THEREOF, AND BY A WEDGE MEMBER ENGAGEABLE WITH SAID SHOES AND ADAPTED FOR ACTUATING SAME UPON MOVEMENT THEREOF INWARDLY OF SAID HOUSING, THE IMPROVEMENT WHICH COMPRISES, IN COMBINATION THEREWITH, A SERIES OF INTERNAL CIRCUMFERENTIALLY SPACED LONGITUDINALLY EXTENDING GUIDE FORMATIONS HAVING ARCUATE INNER SURFACES FORMED IN SAID HOUSING INWARDLY OF SAID HEXAGONAL FRICTION SURFACE AND DEFINING A NON-CONTINUOUS CYLINDRICAL CONFIGURATION, A TRUNNION WALL SECTION DISPOSED INWARDLY OF AND IMMEDIATELY ADJACENT TO SAID HEXAGON FRICTION SURFACE FOR BLENDING SAME INTO SAID CYLINDRICAL CONFIGURATION, AND A STACK OF CIRCULAR ELASTOMERIC PADS DISPOSED IN SAID HOUSING INWARDLY OF SAID FRICTION SHOES RESISTING INWARD MOVEMENT THEREOF AND BEING GUIDINGLY RETAINED IN STACKED COLUMNAR RELATIONSHIP BY SAID CYLINDRICAL CONFIGURATION DEFINED BY SAID GUIDE FORMATIONS.
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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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |