Patent US3242448A successfully refreshed from Google Patents.
US3242448A
Expired / Lapsed
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Pressure transducer
Assignee: Standard Controls Inc
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Filing: 1962-05-03
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Granted: 1966-03-22
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Expires: 1982-05-03
Abstract
No abstract record available.
Inventors
- 👤 Ii William A Paine
- 👤 Richard C Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:05
CPC Classifications
G; G01; G01L; G01L19/00; G01L19/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN A PRESSURE TRANSDUCER, A HOUSING DEFINING A CLOSED FLUID CHAMBER, AN ACTIVE DIAPHRAGM SENSITIVE TO VARIATIONS IN FLUID PRESSURE MOUNTED IN SAID HOUSING MEANS FOR LOADING SAID ACTIVE DIAPHRAGM BY PRESSURIZED FLUID, A COMPENSATING DIAPHRAGM MATCHING SAID ACTIVE DIAPHRAGM IN MATERIAL AND TRANSVERSE CROSS-SECTION EXPOSED ON BOTH OF ITS SIDES TO SAID FLUID SO AS TO BE NON-RESPONSIVE TO THE PRESSURE THEREOF, MEANS FOR HOLDING SAID COMPENSATING DIAPHRAGM IN SPACED RELATION TO SAID ACTIVE DIAPHRAGM, AND AN ELECTRICAL CIRCUIT INCLUDING MATHING STRAIN-RESPONSIVE ELEMENTS MOUNTED ON SAID DIAPHRAGMS.
Claim 2
Dependent Claim
88 words
IN A PRESSURE TRANSDUCER, A HOUSING DEFINING A CLOSED FLUID CHAMBER, AN ACTIVE DIAPHRAGM SENSITIVE TO VARIATIONS IN FLUID PRESSURE MOUNTED IN SAID HOUSING MEANS FOR LOADING SAID ACTIVE DIAPHRAGM BY PRESSURIZED FLUID, A COMPENSATING DIAPHRAGM MATCHING SAID ACTIVE DIAPHRAGM IN MATERIAL AND TRANSVERSE CROSS-SECTION EXPOSED ON BOTH OF ITS SIDES TO SAID FLUID SO AS TO BE NON-RESPONSIVE TO THE PRESSURE THEREOF, MEANS FOR HOLDING SAID COMPENSATING DIAPHRAGM IN SPACED RELATION TO SAID ACTIVE DIAPHRAGM, AND AN ELECTRICAL CIRCUIT INCLUDING MATHING STRAIN-RESPONSIVE ELEMENTS MOUNTED ON SAID DIAPHRAGMS.
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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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |