Patent EP0580931A1 successfully refreshed from Google Patents.
US3606489A
Expired / Lapsed
US
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Antislip device for a compressed air brake
Assignee: Rheinmetall Air Defence AG
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Filing: 1970-03-10
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Granted: 1971-09-20
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Expires: 1990-03-10
Abstract
Abstract AN ANTISLIP DEVICE THE COMPRESES AIR BRAKES WITH A DOUBLE-SEATED VALVE HAVING A VALVE MEMBER CONNECTED TO A PISTON WHICH DIVIDES A FIRST CHAMBER COMMUNICATING WITH A DECELERATION DETECTOR FROM A SECOND CHAMBER WHICH IS IN COMMUNICATION WITH THE THE FIRST CHAMBER THROUGH A THROTTLING CONSTRICTION, IN WHICH THE PISTON IS CONNECTED TO A PART OF A TELESCOPIC VALVE FOR EXHAUSTING THE SECOND CHAMBER, AND THE LENGTH OF THE STROKE OF THE TELESCOPIC VALVE IS LESS THAN THE LENGTH OF THE STROKE OF THE VALVE MEMBER OF THE DOUBLE-SEATED VALVE.
Inventors
- 👤 Siegfried Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:28
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/32; B60T8/34; B60T8/40; B60T8/4095; B60T8/341; B60T8/342
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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |