US3300259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft bushings
Assignee: Individual
•
Filing: 1965-10-20
•
Granted: 1967-01-24
•
Expires: 1985-10-20
Abstract
No abstract record available.
Inventors
- 👤 William J Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:39
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C2208/00; F16C2208/20; F16C2208/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
IN A BRAKE OPERATING MECHANISM HAVING A BRAKE CAM SHAFT EXTENDING THROUGH A BORE IN A SUPPORT WHICH HAS A CIRCUMFERENTIALLY CONTINUOUS CYLINDRICAL INNER SURFACE AND A GREASE APERTURE OPENING INTO SAID BORE, A BUSHING OF POLYMER PLASTIC MATERIAL PRESS-FITTED IN SAID BORE, SAID BUSHING HAVING A CIRCUMFERENTIALLY CONTINUOUS CYLINDRICAL OUTER SURFACE WITH A CIRCUMFERENTIAL GROOVE ABOUT THE EXTERIOR PERIPHERY AND A CIRCUMFERENTIALLY CONTINUOUS CYLINDRICAL INNER SURFACE AND AT LEAST TWO OPENINGS IN OPPOSITE SIDES OF THE BUSHING LEADING FROM SAID GROOVE TO THE INTERIOR OF THE BUSHING, SAID GROOVE BEING SPACED SUBSTANTIALLY THE SAME DISTANCE FROM ONE END OF THE BUSHING AS THE GREASE APERTURE IS FROM THE CORRESPONDING END OF THE BORE IN THE SUPPORT, SO THAT WHEN SAID BUSHING IS PRESSED INTO SAID BORE WITH ITS END SUBSTANTIALLY FLUSH WITH THE END OF THE BORE, THE GROOVE WILL REGISTER WITH THE GREASE APERTURE AND WILL CONVEY GREASE TO SAID OPENINGS AND GREASE WILL REACH THE INTERIOR OF THE BUSHING AND THE SHAFT THEREIN THROUGH AT LEAST ONE OPENING IF ONE OF SAID OPENINGS IS OBSTRUCTED.
Claim 2
Dependent Claim
178 words
IN A BRAKE OPERATING MECHANISM HAVING A BRAKE CAM SHAFT EXTENDING THROUGH A BORE IN A SUPPORT WHICH HAS A CIRCUMFERENTIALLY CONTINUOUS CYLINDRICAL INNER SURFACE AND A GREASE APERTURE OPENING INTO SAID BORE, A BUSHING OF POLYMER PLASTIC MATERIAL PRESS-FITTED IN SAID BORE, SAID BUSHING HAVING A CIRCUMFERENTIALLY CONTINUOUS CYLINDRICAL OUTER SURFACE WITH A CIRCUMFERENTIAL GROOVE ABOUT THE EXTERIOR PERIPHERY AND A CIRCUMFERENTIALLY CONTINUOUS CYLINDRICAL INNER SURFACE AND AT LEAST TWO OPENINGS IN OPPOSITE SIDES OF THE BUSHING LEADING FROM SAID GROOVE TO THE INTERIOR OF THE BUSHING, SAID GROOVE BEING SPACED SUBSTANTIALLY THE SAME DISTANCE FROM ONE END OF THE BUSHING AS THE GREASE APERTURE IS FROM THE CORRESPONDING END OF THE BORE IN THE SUPPORT, SO THAT WHEN SAID BUSHING IS PRESSED INTO SAID BORE WITH ITS END SUBSTANTIALLY FLUSH WITH THE END OF THE BORE, THE GROOVE WILL REGISTER WITH THE GREASE APERTURE AND WILL CONVEY GREASE TO SAID OPENINGS AND GREASE WILL REACH THE INTERIOR OF THE BUSHING AND THE SHAFT THEREIN THROUGH AT LEAST ONE OPENING IF ONE OF SAID OPENINGS IS OBSTRUCTED.
References Cited (Backward Citations)
CA506393A
Cited
FR461933A
Cited
US2566080A
Cited
US2625448A
Cited
DE911928C
Cited
US3076683A
Cited
US3177841A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |