US3610102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety device for hydraulic brake booster
Assignee: Bendix Corp
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Filing: 1970-05-18
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Granted: 1971-10-05
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Expires: 1990-05-18
Abstract
Abstract FLUID COMMUNICATION BETWEEN A SOURCE OF FLUID PRESSURE AND THE POWER CHAMBER OF A VEHICLE HYDRAULIC BRAKE BOOSTER IS CONTROLLED BY A SPOOL VALVE THAT IS OPERATED BY THE VEHICLE OPERATOR. THE SPOOL VALVE IS PROVIDED WITH INTERNAL PASSAGES THROUGH WHICH THE FLUID FLOWS. A SLEEVE IS SLIDABLY MOUNTED ON THE VALVE FOR CLOSING THE PASSAGES WHEN A MALFUNCTION PREVENTS MOVEMENT OF THE VALVE. MOVEMENT OF THE SLEEVE IS INITIALLY RETARDED DURING A BRAKE APPLICATION TO PREVENT THE SLEEVE FROM CLOSING THE PASSAGES WHEN THE VEHICLE OPERATOR ABRUPTLY APPLIES HIS BRAKES.
Inventors
- 👤 Arthur K Brown Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:07
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/12; B60T13/16; B60T13/161; B60T13/162; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87169; Y10T137/87233
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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |