Patent US5282214A successfully refreshed from Google Patents.
Patent US3229592A successfully refreshed from Google Patents.
US3229592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential pressure transmitter and parts therefor or the like
Assignee: Robertshaw Controls Co
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Filing: 1965-02-23
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Granted: 1966-01-18
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Expires: 1985-02-23
Abstract
No abstract record available.
Inventors
- 👤 Louis M Puster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:08
CPC Classifications
G; G01; G01L; G01L7/00; G01F; G01F1/00; G01F1/05; G01F1/34; G01F1/36; G01F1/38; G01L13/00; G01L13/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
IN COMBINATION, A HOUSING HAVING A CAVITY, A DIAPHRAGM DISPOSED IN SAID CAVITY AND HAVING THE OUTER PERIPHERY THEREOF SECURED TO SAID HOUSING TO DIVIDE SAID CAVITY INTO TWO CHAMBERS, SAID DIAPHRAGM HAVING AN APERTURE PASSING THERETHROUGH TO DEFINE AN INNER PERIPHERY OF SAID DIAPHRAGM A BELLOWS TUBE PASSING THROUGH SAID APERTURE, MEANS INTERCONNECTING SAID INNER PERIPHERY OF SAID DIAPHRAGM TO SAID BELLOWS TUBE, SAID BELLOWS TUBE HAVING ONE END THEREOF INTERCONNECTED TO SAID HOUSING AND
Claim 2
Dependent Claim
76 words
IN COMBINATION, A HOUSING HAVING A CAVITY, A DIAPHRAGM DISPOSED IN SAID CAVITY AND HAVING THE OUTER PERIPHERY THEREOF SECURED TO SAID HOUSING TO DIVIDE SAID CAVITY INTO TWO CHAMBERS, SAID DIAPHRAGM HAVING AN APERTURE PASSING THERETHROUGH TO DEFINE AN INNER PERIPHERY OF SAID DIAPHRAGM A BELLOWS TUBE PASSING THROUGH SAID APERTURE, MEANS INTERCONNECTING SAID INNER PERIPHERY OF SAID DIAPHRAGM TO SAID BELLOWS TUBE, SAID BELLOWS TUBE HAVING ONE END THEREOF INTERCONNECTED TO SAID HOUSING AND
References Cited (Backward Citations)
US1323119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |