US3114437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake assembly
Assignee: Rockwell-Standard Corp
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Filing: 1957-03-21
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Granted: 1963-12-17
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Expires: 1977-03-21
Abstract
No abstract record available.
Inventors
- 👤 Bryan E House
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:28
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/02; F16D65/04; F16D65/08; F16D65/14; F16D65/16; F16D65/22; F16D2125/00; F16D2125/18; F16D2125/20; F16D2125/22; F16D2125/28; F16D2125/30; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2101; Y10T74/2107
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
202 words
IN A BRAKE ASSEMBLY, A PAIR OF BRAKE SHOES PIVOTED AT ADJACENT ENDS, A ROTATABLE CAM DISPOSED BETWEEN THE OTHER ENDS OF SAID SHOES, SAID SHOES EACH HAVING ARCUATE BEARING MEANS AT SAID OTHER ENDS THEREOF PROVIDING A PAIR OF SPACED ARCUATE BEARING SURFACES IN AXIAL ALIGNMENT, A TRUNNION ROLLER MEANS FOR EACH BRAKE SHOE INCLUDING AXIALLY SPACED CYLINDRICAL SHAFT MEANS OF SUBSTANTIALLY EQUAL RADIUS TO THE BEARING MEANS SUPPORTED FOR ROCKING MOVEMENT RESPECTIVELY ON THE BEARING SURFACES OF ITS RESPECTIVE BRAKE SHOE AND AN INTERMEDIATE ROLLER ENGAGEABLE WITH THE CAM, SAID ARCUATE BEARING SURFACES EXTENDING THROUGH AN ARC OF NO LESS THAN 180* FROM END TO END, AND SPRING RETAINER MEANS FOR SAID TRUNNION ROLLER MEANS COMPRISING INTEGRAL SHOE EXTENSION PORTIONS AT THE OPPOSITE ENDS OF SAID ARCUATE BEARING SURFACES DEFINING A MOUTH HAVING AN EFFECTIVE OPENING SUFFICIENTLY LESS THAN THE DIAMETER OF SAID SHAFT MEANS AND OF SUCH INHERENT RESILIENCY AS TO BE FORCED APART BY PRESSURE OF SAID SHAFT MEANS AT SAID MOUTH FOR INSERTION INTO SAID BEARING MEANS AND BEING CAPABLE OF SPRINGING BACK TO RETAIN SAID SHAFT MEANS BUT PERMITTING FREE ROCKING MOVEMENT THEREOF IN SAID ARCUATE BEARING MEANS WHEN SAID ROLLER TRUNNION MEANS IS FULLY INSERTED.
Claim 2
Dependent Claim
202 words
IN A BRAKE ASSEMBLY, A PAIR OF BRAKE SHOES PIVOTED AT ADJACENT ENDS, A ROTATABLE CAM DISPOSED BETWEEN THE OTHER ENDS OF SAID SHOES, SAID SHOES EACH HAVING ARCUATE BEARING MEANS AT SAID OTHER ENDS THEREOF PROVIDING A PAIR OF SPACED ARCUATE BEARING SURFACES IN AXIAL ALIGNMENT, A TRUNNION ROLLER MEANS FOR EACH BRAKE SHOE INCLUDING AXIALLY SPACED CYLINDRICAL SHAFT MEANS OF SUBSTANTIALLY EQUAL RADIUS TO THE BEARING MEANS SUPPORTED FOR ROCKING MOVEMENT RESPECTIVELY ON THE BEARING SURFACES OF ITS RESPECTIVE BRAKE SHOE AND AN INTERMEDIATE ROLLER ENGAGEABLE WITH THE CAM, SAID ARCUATE BEARING SURFACES EXTENDING THROUGH AN ARC OF NO LESS THAN 180* FROM END TO END, AND SPRING RETAINER MEANS FOR SAID TRUNNION ROLLER MEANS COMPRISING INTEGRAL SHOE EXTENSION PORTIONS AT THE OPPOSITE ENDS OF SAID ARCUATE BEARING SURFACES DEFINING A MOUTH HAVING AN EFFECTIVE OPENING SUFFICIENTLY LESS THAN THE DIAMETER OF SAID SHAFT MEANS AND OF SUCH INHERENT RESILIENCY AS TO BE FORCED APART BY PRESSURE OF SAID SHAFT MEANS AT SAID MOUTH FOR INSERTION INTO SAID BEARING MEANS AND BEING CAPABLE OF SPRINGING BACK TO RETAIN SAID SHAFT MEANS BUT PERMITTING FREE ROCKING MOVEMENT THEREOF IN SAID ARCUATE BEARING MEANS WHEN SAID ROLLER TRUNNION MEANS IS FULLY INSERTED.
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) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |