US3159346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control valves for a domestic water heater
Assignee: Robertshaw Controls Co
•
Filing: 1962-11-29
•
Granted: 1964-12-01
•
Expires: 1982-11-29
Abstract
No abstract record available.
Inventors
- 👤 Michael J Caparone
- 👤 Theodore J Dykzeul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:09
CPC Classifications
F; F23; F23N; F23N1/00; F23N1/08; F23N1/087; G; G05; G05D; G05D23/00; G05D23/01; G05D23/02; G05D23/024; G05D23/026; G05D23/027; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86928; Y10T137/86936; Y10T137/86944; Y10T137/86984; Y10T137/87016
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
IN COMBINATION, A HOUSING HAVING A PASSAGE MEANS LEADING FROM AN INLET TO AN OUTLET, A SUPPLEMENT VALVE SEAT DISPOSED IN SAID PASSAGE MEANS AND INTERCONNECTING SAID INLET WITH SAID OUTLET, A SUPPLEMENT VALVE MEMBER COOPERABLE WITH SAID SUPPLEMENTAL VALVE SEAT, SAID SUPPLEMENTAL VALVE MEMBER CARRYING A MAIN VALVE SEAT INTERCONNECTING SAID INLET WITH SAID OUTLET, A MAIN VALVE MEMBER COOPERABLE WITH SAID MAIN VALVE SEAT, A SNAP-ACTION MEMBER FOR CONTROLLING OPENING MOVEMENT OF SAID VALVE MEMBERS, SAID SNAP-ACTION MEMBER WHEN FLEXED AND SNAPPED OVER CENTER IN ONE DIRECTION ONLY OPENING SAID MAIN VALVE MEMBER, SAID SNAP-ACTION MEMBER WHEN FURTHER FLEXED IN SAID ONE DIRECTION OPENING SAID SUPPLE-
Claim 2
Dependent Claim
108 words
IN COMBINATION, A HOUSING HAVING A PASSAGE MEANS LEADING FROM AN INLET TO AN OUTLET, A SUPPLEMENT VALVE SEAT DISPOSED IN SAID PASSAGE MEANS AND INTERCONNECTING SAID INLET WITH SAID OUTLET, A SUPPLEMENT VALVE MEMBER COOPERABLE WITH SAID SUPPLEMENTAL VALVE SEAT, SAID SUPPLEMENTAL VALVE MEMBER CARRYING A MAIN VALVE SEAT INTERCONNECTING SAID INLET WITH SAID OUTLET, A MAIN VALVE MEMBER COOPERABLE WITH SAID MAIN VALVE SEAT, A SNAP-ACTION MEMBER FOR CONTROLLING OPENING MOVEMENT OF SAID VALVE MEMBERS, SAID SNAP-ACTION MEMBER WHEN FLEXED AND SNAPPED OVER CENTER IN ONE DIRECTION ONLY OPENING SAID MAIN VALVE MEMBER, SAID SNAP-ACTION MEMBER WHEN FURTHER FLEXED IN SAID ONE DIRECTION OPENING SAID SUPPLE-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |