US3328733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential pressure transducer having bellows with relief valve
Assignee: Camco Inc
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Filing: 1965-06-01
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Granted: 1967-06-27
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Expires: 1985-06-01
Abstract
No abstract record available.
Inventors
- 👤 Gilbert H Tausch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:19
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/0033; G01L9/0036; G01F; G01F1/00; G01F1/05; G01F1/34; G01F1/36; G01F1/38; G01F1/383
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
109 words
IN A PRESSURE-ACTUATED DEVICE, A BODY ENCLOSING A CHAMBER AND HAVING A PAIR OF PRESSURE FLUID INLETS TO THE CHAMBER, A MOVABLE PARTITION WITHIN THE CHAMBER BETWEEN SAID INLETS, RESPONSIVE TO DIFFERENTIAL PRESSURE ON OPPOSITE SIDES OF THE PARTITION, SAID PARTITION COMPRISING A RESILIENT WALL HAVING A NORMALLY CLOSED PASSAGE THERETHROUGH, AN ANNULAR MEMBER ON THE WALL IN SURROUNDING RELATION TO THE PASSAGE AND PROVIDED WITH A VALVE SEAT SURFACE, A VALVE MEMBER HAVING A SEAT SURFACE ENGAGEABLE WITH THE SEAT SURFACE ON THE ANNULAR MEMBER FOR CLOSING SAID PASSAGE, SAID SEAT SURFACES BEING MOVABLE AWAY FROM ONE ANOTHER UPON RELATIVE MOVEMENT OF THE MEMBERS IN RESPONSE TO PRES-
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) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |