Patent US3144255A successfully refreshed from Google Patents.
US3144255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing means utilizing leaf members
Assignee: General Electric Co
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Filing: 1961-07-14
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Granted: 1964-08-11
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Expires: 1981-07-14
Abstract
No abstract record available.
Inventors
- 👤 Robert B Thorne
- 👤 Gall William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:54
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/78; F02K1/80; F02K1/805
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
FOR USE IN SEALING A WALL OPENING AGAINST FLUID LEAKAGE THERETHROUGH DUE TO HIGHER FLUID PRESSURE ON ONE SIDE OF THE WALL THAN ON THE OTHER, FLUID SEAL STRUCTURE COMPRISING WALL MEANS DEFINING SAID OPENING AND FURTHER DEFINING SEAL SEATING SURFACES DISPOSED IN SURROUNDING RELATION TO SAID OPENING AND FACING IN THE DIRECTION OF THE HIGHER FLUID PRESSURE, A PLURALITY OF LEAF MEMBERS EACH BEING OF LENGTH SUFFICIENT TO SPAN SAID OPENING AND ENGAGE SAID SEAL SEATING SURFACES AND BEING OF BREADTH SUCH THAT THE EDGE PORTIONS OF ADJOINING LEAF MEMBERS CONTACT TO FORM A SUBSTANTIALLY CONTINUOUS SEAL MEMBER, AND A PLURALITY OF SUPPORT MEMBERS CARRIED BY SAID WALL MEANS ADJACENT SAID SEAL SEATING SURFACES EACH INDEPENDENTLY MOUNTING ONE OF SAID LEAF MEMBERS FOR SLIDING MOVEMENT BODILY INTO ENGAGEMENT WITH SAID SEAL SEATING SURFACES RESPONSIVE TO THE FLUID PRESSURE ON OPPOSITE SIDES OF THE WALL.
Claim 2
Dependent Claim
145 words
FOR USE IN SEALING A WALL OPENING AGAINST FLUID LEAKAGE THERETHROUGH DUE TO HIGHER FLUID PRESSURE ON ONE SIDE OF THE WALL THAN ON THE OTHER, FLUID SEAL STRUCTURE COMPRISING WALL MEANS DEFINING SAID OPENING AND FURTHER DEFINING SEAL SEATING SURFACES DISPOSED IN SURROUNDING RELATION TO SAID OPENING AND FACING IN THE DIRECTION OF THE HIGHER FLUID PRESSURE, A PLURALITY OF LEAF MEMBERS EACH BEING OF LENGTH SUFFICIENT TO SPAN SAID OPENING AND ENGAGE SAID SEAL SEATING SURFACES AND BEING OF BREADTH SUCH THAT THE EDGE PORTIONS OF ADJOINING LEAF MEMBERS CONTACT TO FORM A SUBSTANTIALLY CONTINUOUS SEAL MEMBER, AND A PLURALITY OF SUPPORT MEMBERS CARRIED BY SAID WALL MEANS ADJACENT SAID SEAL SEATING SURFACES EACH INDEPENDENTLY MOUNTING ONE OF SAID LEAF MEMBERS FOR SLIDING MOVEMENT BODILY INTO ENGAGEMENT WITH SAID SEAL SEATING SURFACES RESPONSIVE TO THE FLUID PRESSURE ON OPPOSITE SIDES OF THE WALL.
References Cited (Backward Citations)
US2882679A
Cited
US2811379A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |