US3198481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reciprocating valve having a throttling arrangement and particular head and seat cooperation
Assignee: Grove Valve and Regulator Co
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Filing: 1961-07-31
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Granted: 1965-08-03
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Expires: 1981-07-31
Abstract
No abstract record available.
Inventors
- 👤 Austin U Bryant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:50
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/365; F16K1/00; F16K1/32; F16K1/34; F16K1/36; F16K1/38; Y; Y10; Y10S; Y10S251/00; Y10S251/90; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7801; Y10T137/7809
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A FLUID CONTROL DEVICE COMPRISING: A VALVE BODY HAVING INLET AND OUTLE FLOW PASSAGES A STATIONARY VALVE MEMBER INTERMEDIATE SAID PASSAGES FORMING A CYLINDRICAL OPENING THEREBETWEEN, A MOVABLE VALVE MEMBER ON THE UPSTREAM SIDE OF SAID STATIONARY, VALVE MEMBER AND MOVABLE ALONG THE AXIS THEREOF, A REDUCED DIAMETER, COAXIAL CYLINDERICAL EXTENDING ON THE DOWNSTREAM SIDE OF SAID MOVABLE VALVE MEMBER, SAID CYLINDRICAL EXTENSION BEING OF A DIAMETER TO ENGAGE CLOSELY WITHIN SAID CYLINDERICAL OPENING TO FORM A FLOW CONSTRICTING THROAT PERMITTING LEAKAGE THEREBY, SAID CYLINDRICAL EXTENSION BEING ENGAGED IN SAID CYLINDRICAL OPENING DURING JUST A PORTION OF THE MOVEMENT OF SAID MOVABLE VALVE MEMBER ADJACENT TO SAID STATIONARY VALVE MEMBER, ONE OF SAID VALVE MEMBERS HAVING AN ANNULAR WORKING SURFACE EXTENDING RADIALLY BEYOND THE DIAMETER OF SAID CYLINDRICAL OPENING,
Claim 2
Dependent Claim
129 words
A FLUID CONTROL DEVICE COMPRISING: A VALVE BODY HAVING INLET AND OUTLE FLOW PASSAGES A STATIONARY VALVE MEMBER INTERMEDIATE SAID PASSAGES FORMING A CYLINDRICAL OPENING THEREBETWEEN, A MOVABLE VALVE MEMBER ON THE UPSTREAM SIDE OF SAID STATIONARY, VALVE MEMBER AND MOVABLE ALONG THE AXIS THEREOF, A REDUCED DIAMETER, COAXIAL CYLINDERICAL EXTENDING ON THE DOWNSTREAM SIDE OF SAID MOVABLE VALVE MEMBER, SAID CYLINDRICAL EXTENSION BEING OF A DIAMETER TO ENGAGE CLOSELY WITHIN SAID CYLINDERICAL OPENING TO FORM A FLOW CONSTRICTING THROAT PERMITTING LEAKAGE THEREBY, SAID CYLINDRICAL EXTENSION BEING ENGAGED IN SAID CYLINDRICAL OPENING DURING JUST A PORTION OF THE MOVEMENT OF SAID MOVABLE VALVE MEMBER ADJACENT TO SAID STATIONARY VALVE MEMBER, ONE OF SAID VALVE MEMBERS HAVING AN ANNULAR WORKING SURFACE EXTENDING RADIALLY BEYOND THE DIAMETER OF SAID CYLINDRICAL OPENING,
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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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |