US3098381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1959-09-10
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Granted: 1963-07-23
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Expires: 1979-09-10
Abstract
No abstract record available.
Inventors
- 👤 David S Little
- 👤 Washingon Port
- 👤 Edward W Pike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:10
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
IN COMBINATION WITH AN ALTIMETER HAVING A SERVO MOTOR COUPLED TO AN ALTITUDE SCALE TO DRIVE SAID SCALE PAST AND INDEX POSITION IN RESPONSE TO CHANGES IN ALTITUDE, MEANS COUPLED TO SAID SERVO MOTOR FOR GENERATING AN ELECTRICAL SIGNAL HAVING AN AMPLITUDE VARIATION PROPROTIONAL TO THE RATE OF CHANGE OF ALTITUDE WITH RESPECT TO TIME AND HAVING A POLARITY INDICATIVE OF THE DIRECTION OF ALTITUDE CHANGE, SAID GENERATING MEANS COMPRISING A RATE GENERATOR COUPLED TO SAID SERVO, SAID RATE GENERATOR HAVING AN INPUT
Claim 2
Dependent Claim
83 words
IN COMBINATION WITH AN ALTIMETER HAVING A SERVO MOTOR COUPLED TO AN ALTITUDE SCALE TO DRIVE SAID SCALE PAST AND INDEX POSITION IN RESPONSE TO CHANGES IN ALTITUDE, MEANS COUPLED TO SAID SERVO MOTOR FOR GENERATING AN ELECTRICAL SIGNAL HAVING AN AMPLITUDE VARIATION PROPROTIONAL TO THE RATE OF CHANGE OF ALTITUDE WITH RESPECT TO TIME AND HAVING A POLARITY INDICATIVE OF THE DIRECTION OF ALTITUDE CHANGE, SAID GENERATING MEANS COMPRISING A RATE GENERATOR COUPLED TO SAID SERVO, SAID RATE GENERATOR HAVING AN INPUT
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) | 1966-07-22 | 1967-01-21 | 1967-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-22 | 1971-01-21 | 1971-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-22 | 1975-01-21 | 1975-07-23 | $7700.00 | Window Closed / Lapsed |