US3174286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Master cylinder
Assignee: Motors Liquidation Co
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Filing: 1963-06-27
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Granted: 1965-03-23
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Expires: 1983-06-27
Abstract
No abstract record available.
Inventors
- 👤 Anton F Erickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:50
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/16; B60T11/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
152 words
A MASTER CYLINDER ASSEMBLY COMPRISING A HOUSING, A CHAMBER FORMED THEREIN, A PRESSURIZING MEMBER MOVABLY RECEIVED IN SAID CHAMBER AND DIVIDING SAID CHAMBER INTO A FLUID PRESSURIZING SECTION AND A FLUID RESERVOIR SECTION, A FLUID COMPENSATION PORT FORMED IN SAID PRESSURIZING MEMBER CONNECTING SAID CHAMBER SECTIONS, A VALVE HAVING A VALVE HEAD FOR OPENING AND CLOSING SAID PORT AND A VALVE SHANK PROVIDED WITH A COLLAR, A PUSH ROD HAVING AN AXIAL PASSAGE THEREIN RECEIVING SAID VALVE SHANK IN THE END THEREOF, AND SPRING MEANS ACTING ON SAID VALVE AND ATTACHED TO SAID PUSH ROD URGING SAID COLLAR TOWARD THE END OF SAID PUSH ROD AND OPERABLE TO LIFT SAID VALVE HEAD TO OPEN SAID PORT UPON FULL RETRACTION OF SAID PUSH ROD, SAID VALVE COLLAR AND SHANK AND HEAD BEING OPERABLE TO TRANSMIT FORCE FROM SAID PUSH ROD TO SAID PRESSURIZING MEMBER WHEN SAID PORT IS CLOSED BY SAID VALVE HEAD.
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) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |