Patent US3387622A successfully refreshed from Google Patents.
US3387622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Flair Manufacturing Corp
•
Filing: 1965-09-22
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Granted: 1968-06-11
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Expires: 1985-09-22
Abstract
No abstract record available.
Inventors
- 👤 Weinstein Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:19
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0644; G05D16/0663; F; F16; F16K; F16K31/00; F16K31/12; F16K31/14; F16K31/145; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7782; Y10T137/7793; Y10T137/7822; Y10T137/7823; Y10T137/7826; Y10T137/8593; Y10T137/87917; Y10T137/88046; Y10T137/88054
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
371 words
A GATE VALVE COMPRISING A BODY INCLUDING A FLUID PASSAGE THERETHROUGH, A VALVE SEAT DISPOSED IN SAID BODY TO DIVIDE SAID FLUID PASSAGE INTO AN INLET PORTION AND AN OUTLET PORTION, A VALVE GATE MEMBER DISPOSED WITHIN SAID BODY FOR MOVEMENT RELATIVE TO THE VALVE SEAT AND FOR OPERATIVE ENGAGEMENT THEREWITH TO CUT OFF FLUID FROM SAID INLET TO SAID OUTLET PORTION, AND POSITIONING MEANS RESPONSIVE TO FLUID PRESSURE AT SAID OUTLET PORTION AND DISPOSED IN OPERATIVE ENGAGEMENT WITH SAID VALVE GATE MEMBER FOR POSITIONING SAME INTO AND OUT OF OPERATIVE ENGAGEMENT WITH THE VALVE SEAT IN RESPONSE TO THE FLUID PRESSURE AT SAID OUTLET PORTION WHEREBY WHENEVER THE FLUID PRESSURE AT SAID OUTLET PORTION EXCESS A PREDETERMINED VALUE, THE VALVE GATE MEMBER IS POSITIONED TO CUT OFF FLUID FLOW FROM THE INLET PORTION TO THE OUTLET PORTION, SAID POSITIONING MEANS INCLUDES A FIRST SPRING MEMBER DISPOSED IN OPERATIVE ENGAGEMENT WITH SAID VALVE GATE MEMBER TO URGE SAME TOWARD A POSITION OF OPERATIVE ENGAGEMENT WITH THE VALVE SEAT FOR CUTTING OFF FLUID FLOW BETWEEN SAID INLET AND OUTLET PORTIONS, A DIAPHRAGM MEANS DISPOSED IN OPERATIVE ENGAGEMENT WITH SAID VALVE GATE MEMBER TO POSITION SAME RELATIVE TO THE VALVE SEAT, AND A SECOND SPRING MEMBER DISPOSED IN OPERATIVE ENGAGEMENT WITH SAID DIAPHRAGM MEANS, SAID DIAPHRAGM MEANS BEING MOVABLE RELATIVE TO SAID VALVE SEAT IN RESPONSE TO FLUID PRESSURE AT SAID OUTLET PORTION, SAID SECOND SPRING MEMBER HAVING A DEFLECTION-FORCE CHARACTERISTIC SELECTED IN RELATION TO THAT OF THE FIRST SPRING MEMBER WHEREBY WHEN THE FLUID PRESSURE AT THE OUTLET PORTION EXCEEDS A PREDETERMINED VALUE, SAID DIAPHRAGM IS MOVED AWAY FROM SAID VALVE SEAT AND AGAINST THE INFLUENCE OF SAID SECOND SPRING MEMBER BY A DISTANCE SUFFICIENT TO PERMIT THE VALVE GATE MEMBER WITH THE AID OF SAID FIRST SPRING MEMBER TO OPERATIVELY ENGAGE SAID VALVE SEAT AND THEREBY CUT OFF FLUID FLOW, AND INCLUDING A SPINDLE DISPOSED IN OPERATIVE ENGAGEMENT WITH SAID VALVE BODY FOR MOVEMENT RELATIVE TO THE VALVE SEAT, SAID SPINDLE BEING OPERATIVELY CONNECTED TO SAID VALVE GATE MEMBER WITH LIMITED FREE MOVEMENT THEREBETWEEN FOR SELECTIVELY POSITIONING SAID VALVE GATE MEMBER TO CUT OFF AND TO PERMIT FLUID FLOW INDEPENDENTLY OF SAID DIAPHRAGM MEANS AND SAID FIRST AND SECOND SPRING MEMBERS.
Claim 2
Dependent Claim
371 words
A GATE VALVE COMPRISING A BODY INCLUDING A FLUID PASSAGE THERETHROUGH, A VALVE SEAT DISPOSED IN SAID BODY TO DIVIDE SAID FLUID PASSAGE INTO AN INLET PORTION AND AN OUTLET PORTION, A VALVE GATE MEMBER DISPOSED WITHIN SAID BODY FOR MOVEMENT RELATIVE TO THE VALVE SEAT AND FOR OPERATIVE ENGAGEMENT THEREWITH TO CUT OFF FLUID FROM SAID INLET TO SAID OUTLET PORTION, AND POSITIONING MEANS RESPONSIVE TO FLUID PRESSURE AT SAID OUTLET PORTION AND DISPOSED IN OPERATIVE ENGAGEMENT WITH SAID VALVE GATE MEMBER FOR POSITIONING SAME INTO AND OUT OF OPERATIVE ENGAGEMENT WITH THE VALVE SEAT IN RESPONSE TO THE FLUID PRESSURE AT SAID OUTLET PORTION WHEREBY WHENEVER THE FLUID PRESSURE AT SAID OUTLET PORTION EXCESS A PREDETERMINED VALUE, THE VALVE GATE MEMBER IS POSITIONED TO CUT OFF FLUID FLOW FROM THE INLET PORTION TO THE OUTLET PORTION, SAID POSITIONING MEANS INCLUDES A FIRST SPRING MEMBER DISPOSED IN OPERATIVE ENGAGEMENT WITH SAID VALVE GATE MEMBER TO URGE SAME TOWARD A POSITION OF OPERATIVE ENGAGEMENT WITH THE VALVE SEAT FOR CUTTING OFF FLUID FLOW BETWEEN SAID INLET AND OUTLET PORTIONS, A DIAPHRAGM MEANS DISPOSED IN OPERATIVE ENGAGEMENT WITH SAID VALVE GATE MEMBER TO POSITION SAME RELATIVE TO THE VALVE SEAT, AND A SECOND SPRING MEMBER DISPOSED IN OPERATIVE ENGAGEMENT WITH SAID DIAPHRAGM MEANS, SAID DIAPHRAGM MEANS BEING MOVABLE RELATIVE TO SAID VALVE SEAT IN RESPONSE TO FLUID PRESSURE AT SAID OUTLET PORTION, SAID SECOND SPRING MEMBER HAVING A DEFLECTION-FORCE CHARACTERISTIC SELECTED IN RELATION TO THAT OF THE FIRST SPRING MEMBER WHEREBY WHEN THE FLUID PRESSURE AT THE OUTLET PORTION EXCEEDS A PREDETERMINED VALUE, SAID DIAPHRAGM IS MOVED AWAY FROM SAID VALVE SEAT AND AGAINST THE INFLUENCE OF SAID SECOND SPRING MEMBER BY A DISTANCE SUFFICIENT TO PERMIT THE VALVE GATE MEMBER WITH THE AID OF SAID FIRST SPRING MEMBER TO OPERATIVELY ENGAGE SAID VALVE SEAT AND THEREBY CUT OFF FLUID FLOW, AND INCLUDING A SPINDLE DISPOSED IN OPERATIVE ENGAGEMENT WITH SAID VALVE BODY FOR MOVEMENT RELATIVE TO THE VALVE SEAT, SAID SPINDLE BEING OPERATIVELY CONNECTED TO SAID VALVE GATE MEMBER WITH LIMITED FREE MOVEMENT THEREBETWEEN FOR SELECTIVELY POSITIONING SAID VALVE GATE MEMBER TO CUT OFF AND TO PERMIT FLUID FLOW INDEPENDENTLY OF SAID DIAPHRAGM MEANS AND SAID FIRST AND SECOND SPRING MEMBERS.
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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) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |