Patent US2438936A successfully refreshed from Google Patents.
US3376802A
Expired / Lapsed
US
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Tracking loop for aircraft cabin pressure regulating system
Assignee: RTX Corp
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Filing: 1966-07-08
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Granted: 1968-04-09
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Expires: 1986-07-08
Abstract
No abstract record available.
Inventors
- 👤 Floyd R Emmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:20
CPC Classifications
B; B64; B64D; B64D13/00; B64D13/02; G; G05; G05D; G05D16/00; G05D16/14; G05D16/16; G05D16/163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
FOR A CABIN PRESSURE REGULATOR INCLUDING: PRESSURE CONTROL MEANS WHICH IS NORMALLY OPERABLE AGAINST A REFERENCE PRESSURE, AN OUTFLOW VALVE FOR ADJUSTING THE PRESSURE IN SAID CABIN BEING RESPONSIVE TO SAID CONTROL MEANS, TRACKING MEANS FOR TRACKING THE ACTUAL PRESSURE IN THE CABIN, SAID TRACKING MEANS INCLUDING MEANS FOR ADJUSTING SAID OUTFLOW VALVE INDEPENDENTLY OF SAID REFERENCE PRESSURE WHEN SAID CABIN PRESSURE DEVIATES FROM SAID REFERENCE PRESSURE BY A PREDETERMINED VALUE.
Claim 2
Dependent Claim
71 words
FOR A CABIN PRESSURE REGULATOR INCLUDING: PRESSURE CONTROL MEANS WHICH IS NORMALLY OPERABLE AGAINST A REFERENCE PRESSURE, AN OUTFLOW VALVE FOR ADJUSTING THE PRESSURE IN SAID CABIN BEING RESPONSIVE TO SAID CONTROL MEANS, TRACKING MEANS FOR TRACKING THE ACTUAL PRESSURE IN THE CABIN, SAID TRACKING MEANS INCLUDING MEANS FOR ADJUSTING SAID OUTFLOW VALVE INDEPENDENTLY OF SAID REFERENCE PRESSURE WHEN SAID CABIN PRESSURE DEVIATES FROM SAID REFERENCE PRESSURE BY A PREDETERMINED VALUE.
References Cited (Backward Citations)
US2456215A
Cited
US2513332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |