US3283778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double check valve
Assignee: Bastian Blessing Co
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Filing: 1964-05-22
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Granted: 1966-11-08
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Expires: 1984-05-22
Abstract
No abstract record available.
Inventors
- 👤 Eino W Linna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:19
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/30; F16K1/301; F16K1/303; F16K15/00; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7842; Y10T137/7854; Y10T137/7856; Y10T137/7898; Y10T137/7902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A CHECK VALVE COMPRISING A BODY HAVING A FLOW CONDUIT THERETHROUGH, A VALVE SEAT ADJACENT ONE END OF THE CONDUIT, VALVE MEANS DISPOSED CONCENTRICALLY TO THE VALVE SEAT IN CLOSED POSITION, SPIDER MEANS IN SAID CONDUIT SPACED FROM THE VALVE SEAT, A VALVE STEM RECIPROCABLY MOUNTED IN SAID SPIDER MEANS, PIVOT MEANS INTERCONNECTING SAID VALVE MEANS AND SAID VALVE STEM ECCENTRICALLY TO THE AXIS OF THE VALVE SEAT, SAID VALVE MEANS MOVING AWAY FROM SAID VALVE SEAT TO
Claim 2
Dependent Claim
78 words
A CHECK VALVE COMPRISING A BODY HAVING A FLOW CONDUIT THERETHROUGH, A VALVE SEAT ADJACENT ONE END OF THE CONDUIT, VALVE MEANS DISPOSED CONCENTRICALLY TO THE VALVE SEAT IN CLOSED POSITION, SPIDER MEANS IN SAID CONDUIT SPACED FROM THE VALVE SEAT, A VALVE STEM RECIPROCABLY MOUNTED IN SAID SPIDER MEANS, PIVOT MEANS INTERCONNECTING SAID VALVE MEANS AND SAID VALVE STEM ECCENTRICALLY TO THE AXIS OF THE VALVE SEAT, SAID VALVE MEANS MOVING AWAY FROM SAID VALVE SEAT TO
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |