Patent US3372594A successfully refreshed from Google Patents.
US3372594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compensation system for differential pressure measuring device
Assignee: General Electric Co
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Filing: 1966-04-11
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Granted: 1968-03-12
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Expires: 1986-04-11
Abstract
No abstract record available.
Inventors
- 👤 David A Bristol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:17
CPC Classifications
G; G01; G01L; G01L11/00; G01L11/004; G01L11/008; G01L13/00; G01L13/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
IN A PRESSURE SENSITIVE DEVICE COMPRISING A HOLLOW CASING, A PAIR OF FLEXIBLE ISOLATING DIAPHRAGMS MOUNTED IN THE CASING AND DEFINING THEREWITH A SPACE ADAPTED TO CONTAIN A LIQUID, A RIGID PARTITION IN THE CASING DIVIDING THE SPACE INTO TWO CHAMBERS, A FLEXIBLE PRESSURE-SENSITIVE DEVICE HAVING A FIRST SIDE EXPOSED TO LIQUID PRESSURE IN ONE CHAMBER AND A SECOND SIDE EXPOSED TO LIQUID IN THE OTHER CHAMBER AND MEANS FOR CONVERTING A PRESSURE DIFFERENTIAL ON THE PRESSURE-SENSITIVE DEVICE TO AN ELECTRICAL OUTPUT SIGNAL, THE IMPROVEMENT OF A COMPENSATING SYSTEM FOR THE PRESSURE SENSITIVE DEVICE FOR CORRECTING ERRORS CAUSED BY AMBIENT TEMPERATURE AND STATIC PRESSURE CHANGES INCLUDING: (A) VALVE MEANS HAVING AN OPEN AND CLOSED POSITION LOCATED IN THE CASING, (B) FIRST CONDUIT MEANS IN THE CASING FROM ONE OF THE CHAMBERS TO SAID VALVE MEANS, (C) SECOND CONDUIT MEANS IN THE CASING EXTENDING FROM THE OTHER CHAMBER TO SAID VALVE MEANS, SAID VALVE MEANS CONNECTING SAID FIRST AND SECOND CONDUIT MEANS WHEREBY LIQUID IN SAID CHAMBERS CAN BE TRANSFERED FROM ONE CHAMBER TO THE OTHER WHEN THE VALVE IS OPEN.
Claim 2
Dependent Claim
180 words
IN A PRESSURE SENSITIVE DEVICE COMPRISING A HOLLOW CASING, A PAIR OF FLEXIBLE ISOLATING DIAPHRAGMS MOUNTED IN THE CASING AND DEFINING THEREWITH A SPACE ADAPTED TO CONTAIN A LIQUID, A RIGID PARTITION IN THE CASING DIVIDING THE SPACE INTO TWO CHAMBERS, A FLEXIBLE PRESSURE-SENSITIVE DEVICE HAVING A FIRST SIDE EXPOSED TO LIQUID PRESSURE IN ONE CHAMBER AND A SECOND SIDE EXPOSED TO LIQUID IN THE OTHER CHAMBER AND MEANS FOR CONVERTING A PRESSURE DIFFERENTIAL ON THE PRESSURE-SENSITIVE DEVICE TO AN ELECTRICAL OUTPUT SIGNAL, THE IMPROVEMENT OF A COMPENSATING SYSTEM FOR THE PRESSURE SENSITIVE DEVICE FOR CORRECTING ERRORS CAUSED BY AMBIENT TEMPERATURE AND STATIC PRESSURE CHANGES INCLUDING: (A) VALVE MEANS HAVING AN OPEN AND CLOSED POSITION LOCATED IN THE CASING, (B) FIRST CONDUIT MEANS IN THE CASING FROM ONE OF THE CHAMBERS TO SAID VALVE MEANS, (C) SECOND CONDUIT MEANS IN THE CASING EXTENDING FROM THE OTHER CHAMBER TO SAID VALVE MEANS, SAID VALVE MEANS CONNECTING SAID FIRST AND SECOND CONDUIT MEANS WHEREBY LIQUID IN SAID CHAMBERS CAN BE TRANSFERED FROM ONE CHAMBER TO THE OTHER WHEN THE VALVE IS OPEN.
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) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |