US3142794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential pressure transducer
Assignee: International Resistance Co
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Filing: 1962-05-24
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Granted: 1964-07-28
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Expires: 1982-05-24
Abstract
No abstract record available.
Inventors
- 👤 William B Pegram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:33
CPC Classifications
G; G01; G01L; G01L13/00; G01L13/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A PRESSURE TRANSDUCER COMPRISING A PAIR OF PARALLEL ARMATURE CORES OF A MAGNETIC MATERIAL, A SEPARATE DIFFERENTIAL TRANSFORMER AROUND EACH OF SAID ARMATURE CORES, EACH OF SAID TRANSFORMERS INCLUDING A PRIMARY WINDING AND A PAIR OF SECONDARY WINDINGS, THE SECONDARY WINDINGS OF EACH OF SAID TRANSFORMERS BEING ELECTRICALLY CONNECTED IN SERIES BUCKING RELATION, THE SECONDARY WINDINGS OF ONE OF SAID TRANSFORMERS BEING ELECTRICALLY CONNECTED TO THE SECONDARY WINDINGS OF THE OTHER TRANSFORMER IN SERIES BUCKING RELATION, THE PRIMARY WINDINGS OF SAID TRANSFORMERS BEING ELECTRICALLY CONNECTED TOGETHER, A PAIR OF CHAMBERS, A SEPARATE DIAPHRAGM SECURED ACROSS EACH OF SAID CHAMBERS, MEANS CONNECTING AN END OF EACH OF SAID ARMATURE CORES TO ONE SIDE OF A SEPARATE ONE OF SAID DIAPHRAGMS, MEANS HYDRAULICALLY CONNECTING THE PORTIONS OF SAID CHAMBERS ON THE ONE SIDE OF SAID DIAPHRAGMS, AND MEANS FOR APPLYING A PRESSURE TO BE MEASURED TO THE OTHER SIDE OF AT LEAST ONE OF SAID DIAPHRAGMS.
Claim 2
Dependent Claim
154 words
A PRESSURE TRANSDUCER COMPRISING A PAIR OF PARALLEL ARMATURE CORES OF A MAGNETIC MATERIAL, A SEPARATE DIFFERENTIAL TRANSFORMER AROUND EACH OF SAID ARMATURE CORES, EACH OF SAID TRANSFORMERS INCLUDING A PRIMARY WINDING AND A PAIR OF SECONDARY WINDINGS, THE SECONDARY WINDINGS OF EACH OF SAID TRANSFORMERS BEING ELECTRICALLY CONNECTED IN SERIES BUCKING RELATION, THE SECONDARY WINDINGS OF ONE OF SAID TRANSFORMERS BEING ELECTRICALLY CONNECTED TO THE SECONDARY WINDINGS OF THE OTHER TRANSFORMER IN SERIES BUCKING RELATION, THE PRIMARY WINDINGS OF SAID TRANSFORMERS BEING ELECTRICALLY CONNECTED TOGETHER, A PAIR OF CHAMBERS, A SEPARATE DIAPHRAGM SECURED ACROSS EACH OF SAID CHAMBERS, MEANS CONNECTING AN END OF EACH OF SAID ARMATURE CORES TO ONE SIDE OF A SEPARATE ONE OF SAID DIAPHRAGMS, MEANS HYDRAULICALLY CONNECTING THE PORTIONS OF SAID CHAMBERS ON THE ONE SIDE OF SAID DIAPHRAGMS, AND MEANS FOR APPLYING A PRESSURE TO BE MEASURED TO THE OTHER SIDE OF AT LEAST ONE OF SAID DIAPHRAGMS.
References Cited (Backward Citations)
US2932972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |