Patent US3605500A successfully refreshed from Google Patents.
US3605500A
Expired / Lapsed
US
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Pressure transducer
Assignee: General Electric Co
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Filing: 1969-10-27
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Granted: 1971-09-20
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Expires: 1989-10-27
Abstract
Abstract A PRESSURE TRANSDUCER USING A BOURDON TUBE PRODUCING AN OUTPUT SIGNAL VARIABLE WITH INPUT PRESSURE. MEASUREMENT ERRORS DUE TO NONLINEAR ELASTIC PROPERTIES OF THE TUBE ARE LARGELY ELIMINATED BY IMPOSING LATERAL AND ROTARY RESTRAINTS ON THE DEFLECTION END OF THE TUBE WITH A FORCE BALANCE LEVER SYSTEM. STOPS LIMIT MOVEMENT OF THE LEVER SYSTEM BEYOND THE NORMAL MEASUREMENT RANGE AND THUS PREVENT EXCESSIVE DEFLECTION AND STRESS OF THE TUBE IN THE EVENT OF OVERPRESSURE. DIFFERENTIAL OR ABSOLUTE PRESSURE MAY BE CONVENIENTLY MEASURED BY THE ADDITION OF A SECOND BOURDON TUBE CONNECTED IN OPPOSED RELATION TO THE FIRST TUBE.
Inventors
- 👤 Harold E Trekell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:17
CPC Classifications
F; F15; F15B; F15B5/00; F15B5/006; G; G01; G01L; G01L9/00; G01L9/0026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |