Patent US3350944A successfully refreshed from Google Patents.
US3350944A
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US
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Strain gauge pressure transducer
Assignee: General Electric Co
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Filing: 1963-10-17
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Granted: 1967-11-07
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Expires: 1983-10-17
Abstract
No abstract record available.
Inventors
- 👤 Michele Dominick J De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:24
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/03; A61B5/07; A61B5/073; A61B2562/00; A61B2562/02; A61B2562/0261; Y; Y10; Y10S; Y10S128/00; Y10S128/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A GAGE FOR MEASURING PRESSURES COMPRISING A CAPSULE; SAID CAPSULE HAVING A DEFORMABLE DIAPHRAGM MOUNTED WITHIN IT, SAID DIAPHRAGM BEING MOUNTED SO THAT A PREDETERMINED PRESSURE FROM SAID CAPSULE WILL BE EXERTED AGAINST ONE SIDE THEREOF AND BEING SUBJECT TO A VARIABLE PRESSURE AGAINST THE OTHER SIDE; A STRAIN SENSOR MOUNTED ON SAID DIAPHRAGM FOR MEASURING STRAINS; AN F.M. OSCILLATOR CIRCUIT HAVING A TUNNEL DIODE AND AN INDUCTANCE IN SERIES TO FORM A SERIES ELEMENT ARRANGED IN SAID CAPSULE; INPUT MEANS FOR CONNECTING A SOURCE OF ELECTRICAL ENERGY TO SAID OSCILLATOR CIRCUIT; SAID STRAIN SENSOR BEING ELECTRICALLY CONNECTED TO SAID INPUT MEANS ON ONE SIDE AND TO SAID SERIES OF ELEMENT OF SAID OSCILLATOR AT ITS OTHER SIDE FOR VARYING THE FREQUENCY OF SAID OSCILLATOR CIRCUIT IN RESPONSE TO THE VARIABLE PRESSURE ON THE DIAPHRAGM.
Claim 2
Dependent Claim
135 words
A GAGE FOR MEASURING PRESSURES COMPRISING A CAPSULE; SAID CAPSULE HAVING A DEFORMABLE DIAPHRAGM MOUNTED WITHIN IT, SAID DIAPHRAGM BEING MOUNTED SO THAT A PREDETERMINED PRESSURE FROM SAID CAPSULE WILL BE EXERTED AGAINST ONE SIDE THEREOF AND BEING SUBJECT TO A VARIABLE PRESSURE AGAINST THE OTHER SIDE; A STRAIN SENSOR MOUNTED ON SAID DIAPHRAGM FOR MEASURING STRAINS; AN F.M. OSCILLATOR CIRCUIT HAVING A TUNNEL DIODE AND AN INDUCTANCE IN SERIES TO FORM A SERIES ELEMENT ARRANGED IN SAID CAPSULE; INPUT MEANS FOR CONNECTING A SOURCE OF ELECTRICAL ENERGY TO SAID OSCILLATOR CIRCUIT; SAID STRAIN SENSOR BEING ELECTRICALLY CONNECTED TO SAID INPUT MEANS ON ONE SIDE AND TO SAID SERIES OF ELEMENT OF SAID OSCILLATOR AT ITS OTHER SIDE FOR VARYING THE FREQUENCY OF SAID OSCILLATOR CIRCUIT IN RESPONSE TO THE VARIABLE PRESSURE ON THE DIAPHRAGM.
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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) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |