Patent US3136328A successfully refreshed from Google Patents.
US3136328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spool type control valve with constant flow valve in spool
Assignee: Webster Electric Co Inc
•
Filing: 1961-11-17
•
Granted: 1964-06-09
•
Expires: 1981-11-17
Abstract
No abstract record available.
Inventors
- 👤 William J Hipp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:21
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/04; F15B13/0401; F15B13/0402; F15B13/0403; F15B13/0416; F15B13/0417; F15B13/0418; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/065; F16K11/07; F16K11/0716; G; G05; G05D; G05D7/00; G05D7/01; G05D7/0126; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2579; Y10T137/2592; Y10T137/8593; Y10T137/87169; Y10T137/87177; Y10T137/87185; Y10T137/877; Y10T137/87829; Y10T137/87837; Y10T137/87861
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A FLOW CONTROL VALVE COMPRISING: A VALVE BODY HAVING A VALVE BORE THEREIN AND ALSO HAVING AN INLET, AN OUTLET AND EXHAUST MEANS ALL COMMUNICATING WITH SAID BORE AND SPACED FROM EACH OTHER LONGITUDINALLY OF THE VALVE BORE; A SPOOL MOUNTED FOR SLIDING MOVEMENT WITHIN SAID BORE FROM A FIRST POSITION TO AT LEAST ONE OPERATING POSITION; MEANS DEFINING A VALVE CHAMBER IN SAID SPOOL; FIRST PASSAGE MEANS IN SAID SPOOL CONNECTING SAID VALVE CHAMBER TO SAID INLET WHEN SAID SPOOL IS IN SAID OPERATING POSITION; SECOND PASSAGE MEANS IN SAID SPOOL ADAPTED FOR CONNECTING SAID EXHAUST MEANS TO SAID CHAMBER WHEN THE SPOOL IS IN ITS OPERATING POSITION;
Claim 2
Dependent Claim
109 words
A FLOW CONTROL VALVE COMPRISING: A VALVE BODY HAVING A VALVE BORE THEREIN AND ALSO HAVING AN INLET, AN OUTLET AND EXHAUST MEANS ALL COMMUNICATING WITH SAID BORE AND SPACED FROM EACH OTHER LONGITUDINALLY OF THE VALVE BORE; A SPOOL MOUNTED FOR SLIDING MOVEMENT WITHIN SAID BORE FROM A FIRST POSITION TO AT LEAST ONE OPERATING POSITION; MEANS DEFINING A VALVE CHAMBER IN SAID SPOOL; FIRST PASSAGE MEANS IN SAID SPOOL CONNECTING SAID VALVE CHAMBER TO SAID INLET WHEN SAID SPOOL IS IN SAID OPERATING POSITION; SECOND PASSAGE MEANS IN SAID SPOOL ADAPTED FOR CONNECTING SAID EXHAUST MEANS TO SAID CHAMBER WHEN THE SPOOL IS IN ITS OPERATING POSITION;
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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |