Patent US3228478A successfully refreshed from Google Patents.
US3228478A
Expired / Lapsed
US
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Control lag compensator for rotary wing aircraft
Assignee: Bell Aerospace Corp
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Filing: 1964-04-29
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Granted: 1966-01-11
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Expires: 1984-04-29
Abstract
No abstract record available.
Inventors
- 👤 Harry K Edenborough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:54
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/54; B64C27/58; B64C27/59; B64C27/605; B64C27/32; B64C27/52; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN A CONTROL SYSTEM OF AIRCRAFT, THE IMPROVEMENT COMPRISING: A RESPONSE LAG COMPENSATION LINK HAVING A FIRST END, A SECOND END, AND MEANS COUPLING SAID ENDS TO CAUSE A UNIT MOVEMENT OF SAID FIRST END IN A FIRST DIRECTION TO RESULT IN A FIRST MOVEMENT OF SAID SECOND END IN SAID FIRST DIRECTION FOLLOWED BY A SECOND MOVEMENT OF SAID SECOND END IN A DIRECTION OPPOSITE TO SAID FIRST DIRECTION, SAID SECOND MOVEMENT OF SAID SECONE END BEING OF A MAGNITUDE SUCH THAT THE NET MOVEMENT OF SAID SECOND END IS SUBSTANTIALLY EQUAL TO SAID UNIT MOVEMENT OF SAID FIRST END.
Claim 2
Dependent Claim
101 words
IN A CONTROL SYSTEM OF AIRCRAFT, THE IMPROVEMENT COMPRISING: A RESPONSE LAG COMPENSATION LINK HAVING A FIRST END, A SECOND END, AND MEANS COUPLING SAID ENDS TO CAUSE A UNIT MOVEMENT OF SAID FIRST END IN A FIRST DIRECTION TO RESULT IN A FIRST MOVEMENT OF SAID SECOND END IN SAID FIRST DIRECTION FOLLOWED BY A SECOND MOVEMENT OF SAID SECOND END IN A DIRECTION OPPOSITE TO SAID FIRST DIRECTION, SAID SECOND MOVEMENT OF SAID SECONE END BEING OF A MAGNITUDE SUCH THAT THE NET MOVEMENT OF SAID SECOND END IS SUBSTANTIALLY EQUAL TO SAID UNIT MOVEMENT OF SAID FIRST END.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |