US3289479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential pressure sensing transducer
Assignee: Camco Inc
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Filing: 1964-10-05
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Granted: 1966-12-06
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Expires: 1984-10-05
Abstract
No abstract record available.
Inventors
- 👤 Gilbert H Tausch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:46
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/0033; G01L9/0036; G01L13/00; G01L13/02; G01L13/023
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
142 words
IN A DIFFERENTIAL PRESSURE TRANSDUCER, A DIFFERENTIAL TRANSFORMER HAVING RELATIVELY MOVABLE COIL MEANS AND ARMATURE MEANS, A HOUSING HAVING FIXED RELATION WITH ONE OF SAID MEANS AND ENCLOSING A PAIR OF CHAMBERS FOR RECEPTION OF PRESSURE FLUID, A MOVABLE PARTITION SEPARATING SAID CHAMBERS AND RESPONSIVE TO RELATIVE FLUID PRESSURES WITHIN THE CHAMBERS, SAID PARTITION INCLUDING A FLEXIBLE BELLOWS SECURED AT ONE END TO THE HOUSING, A VALVE SEATING RING ON THE FREE END OF THE BELLOWS AND A VALVE MEMBER HAVING MOTION TRANSMITTING CONNECTION WITH THE OTHER OF SAID MEANS AND SEATING ENGAGEMENT WITH SAID RING FOR MOVEMENT THEREWITH THROUGHOUT A GIVEN RANGE OF BELLOWS FLEXURE, SAID SEALING RING BEING MOVABLE AWAY FROM THE VALVE MEMBER BEYOND ONE END OF SAID GIVEN RANGE AND SAID VALVE MEMBER BEING MOVABLE AWAY FROM THE SEATING RING BEOUND THE OPPOSITE END OF SAID GIVEN RANGE.
References Cited (Backward Citations)
US2489123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |