Patent US3371487A successfully refreshed from Google Patents.
US3371487A
Expired / Lapsed
US
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Divided master cylinder
Assignee: ZF Active Safety US Inc
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Filing: 1966-08-15
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Granted: 1968-03-05
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Expires: 1986-08-15
Abstract
No abstract record available.
Inventors
- 👤 Stelzer William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:04
CPC Classifications
B; B60; B60T; B60T17/00; B60T17/18; B60T17/22; B60T11/00; B60T11/10; B60T11/16; B60T11/20; B60T11/203; B60T11/206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
IN A PRESSURE GENERATING DEVICE FOR A DUAL MASTER CYLINDER WHICH IS CAPABLE OF APPLYING DIFFERENTIAL PRESSURE TO THE FRONT AND REAR BRAKE CYLINDERS, A SUPPORT FOR A PIVOT ON WHICH A FOOT PEDAL IS MOVABLE, LEVER MEANS SUPPORTED ON SAID PIVOT AND ENGAGEABLE WITH SAID FOOT PEDAL, SPRING MEANS NORMALLY RETAINING SAID LEVER MEANS IN ENGAGEMENT WITH SAID FOOT PEDAL WHEN INITIAL FORCE IS APPLIED TO THE LATTER, AND MEANS ACTUATED WHEN THE FORCE APPLIED TO THE FOOT PEDAL IS GREAT ENOUGH TO OVERCOME THE SPRING MEANS FOR APPLYING A DIFFERENTIAL PRESSURE TO THE FRONT AND REAR BRAKE CYLINDERS.
Claim 2
Dependent Claim
100 words
IN A PRESSURE GENERATING DEVICE FOR A DUAL MASTER CYLINDER WHICH IS CAPABLE OF APPLYING DIFFERENTIAL PRESSURE TO THE FRONT AND REAR BRAKE CYLINDERS, A SUPPORT FOR A PIVOT ON WHICH A FOOT PEDAL IS MOVABLE, LEVER MEANS SUPPORTED ON SAID PIVOT AND ENGAGEABLE WITH SAID FOOT PEDAL, SPRING MEANS NORMALLY RETAINING SAID LEVER MEANS IN ENGAGEMENT WITH SAID FOOT PEDAL WHEN INITIAL FORCE IS APPLIED TO THE LATTER, AND MEANS ACTUATED WHEN THE FORCE APPLIED TO THE FOOT PEDAL IS GREAT ENOUGH TO OVERCOME THE SPRING MEANS FOR APPLYING A DIFFERENTIAL PRESSURE TO THE FRONT AND REAR BRAKE CYLINDERS.
References Cited (Backward Citations)
US1733936A
Cited
US2216124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |