US3302473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake mechanism
Assignee: Rockwell-Standard Corp
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Filing: 1964-05-20
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Granted: 1967-02-07
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Expires: 1984-05-20
Abstract
No abstract record available.
Inventors
- 👤 Robert K Lowry
- 👤 George P Mathews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:52
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/14; F16D65/16; F16D65/22; F16D2125/00; F16D2125/18; F16D2125/58; F16D2125/66; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18992
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
IN A WEDGE TYPE BRAKE ACTUATOR, A HOUSING HAVING A BORE AND HAVING GROOVED INNER ENDS FACING EACH OTHER WITHIN SAID HOUSING, OPPOSED COAXIAL BRAKE SHOE CONNECTED PLUNGERS SLIDABLE IN SAID HOUSING, A PUSH ROD IN SAID HOUSING EXTENDING THROUGH SAID BORE RECIPROCABLE NORMAL TO SAID PLUNGER AXES AND HAVING A FIXED WEDGE ON ONE END, A ROLLER CARRIER MOUNTED ON SAID PUSH ROD, ROLLERS MOUNTED ON SAID CARRIER IN ROLLING CONTACT WITH OPPOSITE SIDES OF SAID WEDGE AND WITH THE GROOVED ADJACENT ENDS OF SAID PLUNGERS, POSITIONING MEANS IN SAID HOUSING HAVING MEANS ADJACENT OPPOSITE SIDES OF SAID CARRIER FOR ORIENTING SAID ROLLER CARRIER AND GUIDING SAID ROLLERS INTO PREDETERMINED OPERATIVE RELATION WITHIN SAID GROOVED PLUNGER ENDS DURING ASSEMBLY AND MAINTAINING SAID RELATION DURING NORMAL BRAKE OPERATION, AND COOPERATING MEANS ON SAID POSITIONING MEANS AND IN SAID BORE FOR POSITIVELY FIXING SAID POSITIONING MEANS AGAINST ROTATION ABOUT THE AXIS OF SAID BORE.
Claim 2
Dependent Claim
153 words
IN A WEDGE TYPE BRAKE ACTUATOR, A HOUSING HAVING A BORE AND HAVING GROOVED INNER ENDS FACING EACH OTHER WITHIN SAID HOUSING, OPPOSED COAXIAL BRAKE SHOE CONNECTED PLUNGERS SLIDABLE IN SAID HOUSING, A PUSH ROD IN SAID HOUSING EXTENDING THROUGH SAID BORE RECIPROCABLE NORMAL TO SAID PLUNGER AXES AND HAVING A FIXED WEDGE ON ONE END, A ROLLER CARRIER MOUNTED ON SAID PUSH ROD, ROLLERS MOUNTED ON SAID CARRIER IN ROLLING CONTACT WITH OPPOSITE SIDES OF SAID WEDGE AND WITH THE GROOVED ADJACENT ENDS OF SAID PLUNGERS, POSITIONING MEANS IN SAID HOUSING HAVING MEANS ADJACENT OPPOSITE SIDES OF SAID CARRIER FOR ORIENTING SAID ROLLER CARRIER AND GUIDING SAID ROLLERS INTO PREDETERMINED OPERATIVE RELATION WITHIN SAID GROOVED PLUNGER ENDS DURING ASSEMBLY AND MAINTAINING SAID RELATION DURING NORMAL BRAKE OPERATION, AND COOPERATING MEANS ON SAID POSITIONING MEANS AND IN SAID BORE FOR POSITIVELY FIXING SAID POSITIONING MEANS AGAINST ROTATION ABOUT THE AXIS OF SAID BORE.
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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |