US3338518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pilot operated valve
Assignee: JACKES EVANS Manufacturing Co
•
Filing: 1965-04-14
•
Granted: 1967-08-29
•
Expires: 1985-04-14
Abstract
No abstract record available.
Inventors
- 👤 William J Barbier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:37
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/12; G05D23/125; G05D23/126; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7764; Y10T137/7768
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A PILOT OPERATED CONTOL VALVE COMPRISING A VALVE PORTION HAVING AN INLET PORT, AN OUTLET PORT AND A CHAMBER THEREBETWEEN, SAID CHAMBER HAVING A WALL SURFACE EXTENDING BETWEEN SAID INLET AND OUTLET PORTS, A VALVE MEMBER MOVABLE IN SAID CHAMBER FOR CONTROLLING FLOW BETWEEN THE INLET AND OUTLET PORTS, SAID VALVE MEMBER HAVING A VALVE SURFACE MOVABLE TOWARD AND AWAY FROM THE CHAMBER WALL SURFACE AND COOPERATING THEREWITH TO VARY THE COMMUNICATION BETWEEN THE SAID PORTS, SAID WALL AND SAID VALVE SURFACES HAVING CONTOURS WHICH ARE INCAPABLE OF SURFACE-TO-SURFACE CONTACT TO COMPLETELY PREVENT COMMUNICATION BETWEEN THE INLET AND OUTLET PORTS, AND MEANS FOR VARYING THE PRESSURE DIFFERENTIAL ACROSS THE MOVABLE VALVE MEMBER IN RESPONSE TO A CONTROLLED CONDITION TO PREDETERMINATELY CONTROL THE RELATIVE POSITIONS OF SAID WALL
Claim 2
Dependent Claim
127 words
A PILOT OPERATED CONTOL VALVE COMPRISING A VALVE PORTION HAVING AN INLET PORT, AN OUTLET PORT AND A CHAMBER THEREBETWEEN, SAID CHAMBER HAVING A WALL SURFACE EXTENDING BETWEEN SAID INLET AND OUTLET PORTS, A VALVE MEMBER MOVABLE IN SAID CHAMBER FOR CONTROLLING FLOW BETWEEN THE INLET AND OUTLET PORTS, SAID VALVE MEMBER HAVING A VALVE SURFACE MOVABLE TOWARD AND AWAY FROM THE CHAMBER WALL SURFACE AND COOPERATING THEREWITH TO VARY THE COMMUNICATION BETWEEN THE SAID PORTS, SAID WALL AND SAID VALVE SURFACES HAVING CONTOURS WHICH ARE INCAPABLE OF SURFACE-TO-SURFACE CONTACT TO COMPLETELY PREVENT COMMUNICATION BETWEEN THE INLET AND OUTLET PORTS, AND MEANS FOR VARYING THE PRESSURE DIFFERENTIAL ACROSS THE MOVABLE VALVE MEMBER IN RESPONSE TO A CONTROLLED CONDITION TO PREDETERMINATELY CONTROL THE RELATIVE POSITIONS OF SAID WALL
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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) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |