Patent US3556607A successfully refreshed from Google Patents.
US3556607A
Expired / Lapsed
US
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Combination proportioning and bypass valve
Assignee: Bendix Corp
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Filing: 1969-06-11
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Granted: 1971-01-19
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Expires: 1989-06-11
Abstract
Abstract A BRAKE FAILURE WARNING DEVICE AND A BRAKE PROPORTIONING VALVE ARE PROVIDED IN A SINGLE HOUSING. DURING NORMAL BRAKE APPLICATIONS, THE PROPORTIONING VALVE REDUCES THE BRAKING EFFORT OF THE REAR WHEELS AS COMPARED TO THE FRONT WHEELS. THE WARNING DEVICE AND PROPORTIONING VALVE ARE INTERCONNECTED IN SUCH A MANNER THAT A FAILURE IN THE FRONT BRAKE HYDRAULIC SYSTEM NOT ONLY ACTUATES A WARNING DEVICE IN THE DRIVER''S COMPARTMENT BUT ALSO HOLDS THE PROPORTIONING VALVE OPEN TO PERMIT THE REAR WHEELS TO DELIVER THEIR MAXIMUM BRAKING EFFORT.
Inventors
- 👤 Paul B Shutt
- 👤 Charles M Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:55
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/26; B60T8/262; B60T8/265; B60T17/00; B60T17/18; B60T17/22; B60T17/226
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |