US3376803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cabin pressure regulator
Assignee: RTX Corp
•
Filing: 1966-07-11
•
Granted: 1968-04-09
•
Expires: 1986-07-11
Abstract
No abstract record available.
Inventors
- 👤 Floyd R Emmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:59
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/20; G05D16/2006; G05D16/208; B; B64; B64D; B64D13/00; B64D13/02; B64D13/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A DEVICE FOR AUTOMATICALLY REGULATING THE PRESSURE IN AN AIRCRAFT CABIN EXPOSED TO VARYING EXTERNAL AIR PRESSURE COMPRISING: MEANS FOR SENSING THE PRESSURE OF THE ENVIRONMENT EXTERNAL TO THE CABIN AND PRODUCING AN AMBIENT SIGNAL INDICATIVE THEREOF, MEANS FOR SCHEDULING A SIGNAL INDICATIVE OF A PRESELECTED PRESSURE LEVEL OF SAID EXTERNAL ENVIRONMENT, MEANS RESPONSIVE TO THE AMBIENT SIGNAL AND THE PRESELECTED EXTERNAL CABIN PRESSURE SIGNAL FOR GENERATING A SIGNAL INDICATIVE OF THE DIFFERENCE THEREBETWEEN, MEANS RESPONSIVE TO THE DIFFERENCE SIGNAL FOR PRODUCING A SIGNAL INDICATIVE OF THE DESIRED PRESSURE IN THE CABIN, MEANS FOR SENSING THE ACTUAL CABIN PRESSURE AND PRODUCING A SIGNAL INDICATIVE THEREOF, AND MEANS COMPARING THE ACTUAL PRESSURE SIGNAL WITH THE DESIRED CABIN PRESSURE SIGNAL AND PRODUCING AN ERROR SIGNAL FOR VARYING THE CABIN PRESSURE IN A DIRECTION TENDING TO DRIVE SAID ERROR SIGNAL TO A MINIMUM.
Claim 2
Independent Claim
140 words
A DEVICE FOR AUTOMATICALLY REGULATING THE PRESSURE IN AN AIRCRAFT CABIN EXPOSED TO VARYING EXTERNAL AIR PRESSURE COMPRISING: MEANS FOR SENSING THE PRESSURE OF THE ENVIRONMENT EXTERNAL TO THE CABIN AND PRODUCING AN AMBIENT SIGNAL INDICATIVE THEREOF, MEANS FOR SCHEDULING A SIGNAL INDICATIVE OF A PRESELECTED PRESSURE LEVEL OF SAID EXTERNAL ENVIRONMENT, MEANS RESPONSIVE TO THE AMBIENT SIGNAL AND THE PRESELECTED EXTERNAL CABIN PRESSURE SIGNAL FOR GENERATING A SIGNAL INDICATIVE OF THE DIFFERENCE THEREBETWEEN, MEANS RESPONSIVE TO THE DIFFERENCE SIGNAL FOR PRODUCING A SIGNAL INDICATIVE OF THE DESIRED PRESSURE IN THE CABIN, MEANS FOR SENSING THE ACTUAL CABIN PRESSURE AND PRODUCING A SIGNAL INDICATIVE THEREOF, AND MEANS COMPARING THE ACTUAL PRESSURE SIGNAL WITH THE DESIRED CABIN PRESSURE SIGNAL AND PRODUCING AN ERROR SIGNAL FOR VARYING THE CABIN PRESSURE IN A DIRECTION TENDING TO DRIVE SAID ERROR SIGNAL TO A MINIMUM.
References Cited (Backward Citations)
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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) | 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 |