US3174285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure producing device for automotive braking systems
Assignee: ZF Active Safety US Inc
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Filing: 1963-06-12
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Granted: 1965-03-23
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Expires: 1983-06-12
Abstract
No abstract record available.
Inventors
- 👤 Stelzer William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:26
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/24; B60T13/46; B60T13/52; B60T13/565; B60T11/00; B60T11/10; B60T11/24
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
101 words
A MANUALLY OPERABLE HYDRAULIC PRESSURE PRODUCING DEVICE FOR AN AUTOMOTIVE BRAKE SYSTTEM HAVING WHEEL CYLINDERS, AND CHAMBER MEANS AND PLUNGER MEANS OPERABLE THEREIN FOR DISPLACING FLUID TO SAID WHEEL CYLINDERS, THE BRAKE SYSTEM POSSESSING INHERENT RESISTANCES TO DISPLACEMENT OF FLUID FROM SAID CHAMBER MEANS, COMPRISING A FLUID PRESSURE MOTOR CONNECTED TO SAID PLUNGER MEANS, A VALVE MECHANISM FOR CONNECTING SAID MOTOR TO A SOURCE OF PRESSURE, AND A PEDAL OPERABLE PUSH ROD FREELY MOVABLE RELATIVE TO SAID PLUNGER MEANS FROM A NORMAL POSITION A SLIGHT DISTANCE TO FULLY ENERGIZE SAID MOTOR AND THEN TRANSMIT DIRECT PEDAL FORCES TO SAID PLUNGER MEANS,
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 |