Patent US1904388A successfully refreshed from Google Patents.
Patent US3075393A successfully refreshed from Google Patents.
US3075393A
Expired / Lapsed
US
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Damping and aligning apparatus
Assignee: Honeywell Inc
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Filing: 1958-12-05
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Granted: 1963-01-29
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Expires: 1978-12-05
Abstract
No abstract record available.
Inventors
- 👤 Harold A Lindgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:29
CPC Classifications
G; G01; G01C; G01C25/00; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1221; Y10T74/1229; Y10T74/1257
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
AN APPARATUS FOR AUTOMATICALLY LEVELING THE PLATFORM OF AN INERTIAL NAVIGATION SYSTEM INCLUDING A PAIR OF CLOSED SERVO LOOPS EACH WITH A NATURAL PERIOD OF ABOUT 84 MINUTES AND EACH HAVING AN INTEGRATING ACCELEROMETER CARRIED BY THE PLATFORM, THE IMPROVEMENT WHICH COMPRISES: AN ADDITIONAL LOOP CONSTITUTING FEEDBACK MEANS ASSOCIATED WITH EACH SAID INTEGRATING ACCELEROMETER FOR CONVERTING THE INTEGRATION FUNCTION THEREOF TO A FIRST ORDER LAG; FURTHER MEANS IN EACH SAID LOOP FOR GREATLY SHORTENING THE NATURAL PERIOD THEREOF; AND MEANS CONNECTED TO SAID FEEDBACK MEANS AND SAID FURTHER MEANS FOR DISABLING SAID ADDITIONAL LOOP AND SAID FURTHER MEANS.
Claim 2
Independent Claim
98 words
AN APPARATUS FOR AUTOMATICALLY LEVELING THE PLATFORM OF AN INERTIAL NAVIGATION SYSTEM INCLUDING A PAIR OF CLOSED SERVO LOOPS EACH WITH A NATURAL PERIOD OF ABOUT 84 MINUTES AND EACH HAVING AN INTEGRATING ACCELEROMETER CARRIED BY THE PLATFORM, THE IMPROVEMENT WHICH COMPRISES: AN ADDITIONAL LOOP CONSTITUTING FEEDBACK MEANS ASSOCIATED WITH EACH SAID INTEGRATING ACCELEROMETER FOR CONVERTING THE INTEGRATION FUNCTION THEREOF TO A FIRST ORDER LAG; FURTHER MEANS IN EACH SAID LOOP FOR GREATLY SHORTENING THE NATURAL PERIOD THEREOF; AND MEANS CONNECTED TO SAID FEEDBACK MEANS AND SAID FURTHER MEANS FOR DISABLING SAID ADDITIONAL LOOP AND SAID FURTHER MEANS.
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) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |