US3566711A
Expired / Lapsed
US
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Assignee: Boeing North American Inc
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Filing: 1969-06-10
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Granted: 1971-03-02
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Expires: 1989-06-10
Abstract
Abstract A DEVICE FOR ASSURING THE FAIL-SAFE COORDINATION OF AT LEAST TWO CONTROL SYSTEMS. A PLURALITY OF SLIDABLE LOCKING PLATES ARE POSITIONED WITH RESPECT TO THE GATE PLATE OF A CONTROL BOX AND ARE SHAPED SO THAT EFFECTIVE OPERATION CAN BE ACHIEVED ONLY THROUGH A SELECTIVE AND SEQUENTIAL MOVEMENT OF THE TWO CONTROL LEVERS WHICH, IN TURN, PROVIDES SELECTIVE AND SEQUENTIAL MOVEMENT OF THE LOCKING PLATES.
Inventors
- 👤 Dale F Leuenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:26
CPC Classifications
G; G05; G05G; G05G5/00; G05G5/06; G05G5/08; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/20073; Y10T74/20079; Y10T74/20085; Y10T74/20207; Y10T74/20238
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |