US3140843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servo system
Assignee: Unisys Corp
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Filing: 1962-09-06
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Granted: 1964-07-14
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Expires: 1982-09-06
Abstract
No abstract record available.
Inventors
- 👤 Robert H Pettit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:16
CPC Classifications
B; B64; B64C; B64C13/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
IN A COMBINED MANUAL AND AUTOMATIC SERVO SYSTEM FOR DIRIGIBLE CRAFT WITH A MOVABLE CONTROL SURFACE, AN OUTPUT DRUM WITH AN AXIS CONNECTED TO MOVE THE CONTROL SURFACE, A MANUALLY OPERABLE CONTROLLER, AN INPUT DRUM OPERATIVELY CONNECTED TO THE CONTROLLER ARRANGED IN COAXIAL JUXTAPOSED RELATION TO THE OUTPUT DRUM, MEANS FOR ROTATIONALLY INTERLOCKING THE JUXTAPOSE INPUT AND OUTPUT DRUMS, AND SERVO MEANS FOR OPERATING SAID INTERLOCKED DRUMS INCLUDING AN AUTOMATIC PILOT PROVIDING AN OUTPUT DEPENDING ON MOVEMENT OF THE CRAFT ABOUT AN AXIS CORRESPONDING TO THE AXIS OF THE MOVABLE CONTROL SURFACE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |