US3083728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Four-stage automatic valve for a water softener or conditioner
Assignee: Culligan Inc
•
Filing: 1960-05-16
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Granted: 1963-04-02
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Expires: 1980-05-16
Abstract
No abstract record available.
Inventors
- 👤 Robert E Schulze
- 👤 Edwin A Morrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:14
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/365; C; C02; C02F; C02F1/00; C02F1/42; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2564; Y10T137/8593; Y10T137/86389; Y10T137/86445; Y10T137/87265; Y10T137/87338; Y10T137/87346; Y10T137/87362; Y10T137/8737; Y10T137/87571; Y10T137/87587; Y10T137/87643
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A DIRECTIONAL VALVE ASSEMBLY FOR CONTROLLING THE DIRECTION AND FLOW OF LIQUID THERETHROUGH, COMPRISING FIRST AND SECOND VALVE BODIES, A RECIPROCABLE VALVE MEMBER IN EACH VALVE BODY, AN UPPER, A LOWER, AND AN INTERMEDIATE CHAMBER IN EACH VALVE BODY, SEALING MEANS SURROUNDING EACH VALVE MEMBER AND SEPARATING THE UPPER CHAMBER FROM THE INTERMEDIATE CHAMBER, A VALVE SEAT BETWEEN THE INTERMEDIATE AND LOWER CHAMBERS COOPERATING WITH SAID VALVE MEMBER, AN ENLARGEMENT ON THE LOWER END OF SAID VALVE MEMBER SEATING ON SAID VALVE SEAT IN ONE OF THE TWO VALVE POSITIONS, AN OUTLET LEADING FROM SAID LOWER CHAMBER OF EACH VALVE BODY, A SECOND VALVE SEAT COOPERATING WITH THE ENLARGEMENT ON THE VALVE MEMBER AND SEPARATING THE LOWER CHAMBER FROM SAID OUTLET, A PASSAGE WITHIN SAID VALVE MEMBER WHICH IS CLOSED WHEN THE VALVE IS IN NORMAL
Claim 2
Dependent Claim
136 words
A DIRECTIONAL VALVE ASSEMBLY FOR CONTROLLING THE DIRECTION AND FLOW OF LIQUID THERETHROUGH, COMPRISING FIRST AND SECOND VALVE BODIES, A RECIPROCABLE VALVE MEMBER IN EACH VALVE BODY, AN UPPER, A LOWER, AND AN INTERMEDIATE CHAMBER IN EACH VALVE BODY, SEALING MEANS SURROUNDING EACH VALVE MEMBER AND SEPARATING THE UPPER CHAMBER FROM THE INTERMEDIATE CHAMBER, A VALVE SEAT BETWEEN THE INTERMEDIATE AND LOWER CHAMBERS COOPERATING WITH SAID VALVE MEMBER, AN ENLARGEMENT ON THE LOWER END OF SAID VALVE MEMBER SEATING ON SAID VALVE SEAT IN ONE OF THE TWO VALVE POSITIONS, AN OUTLET LEADING FROM SAID LOWER CHAMBER OF EACH VALVE BODY, A SECOND VALVE SEAT COOPERATING WITH THE ENLARGEMENT ON THE VALVE MEMBER AND SEPARATING THE LOWER CHAMBER FROM SAID OUTLET, A PASSAGE WITHIN SAID VALVE MEMBER WHICH IS CLOSED WHEN THE VALVE IS IN NORMAL
References Cited (Backward Citations)
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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) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |