US3297047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve assembly
Assignee: Vapor Corp
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Filing: 1964-03-17
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Granted: 1967-01-10
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Expires: 1984-03-17
Abstract
No abstract record available.
Inventors
- 👤 Malcolm A Sime
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:22
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/10; G05D16/103; G05D16/106; F; F16; F16K; F16K1/00; F16K1/12; F16K1/126; F16K15/00; F16K15/18; F16K15/182; F16K15/1826; F16K31/00; F16K31/12; F16K31/36; F16K31/40; F16K31/406; Y; Y10; Y10T; Y10T137/00; Y10T137/3367; Y10T137/3421
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
335 words
A COMBINED INLINE SHUT-OFF AND CHECK VALVE ASSEMBLY COMPRISING, A HOUSING HAVING AXIALLY ALIGNED INLET AND OUTLET OPENINGS AND INTERMEDIATE TRANSVERSE WALL MEANS, A FIRST VALVE SEAT AT SAID INLET OPENING AND A SECOND VALVE SEAT AT SAID OUTLET OPENING, SAID INTERMEDIATE TRANSVERSE WALL MEANS HAVING A TUBULAR PORTION AND A CONCENTRIC ANNULAR SHOULDER PORTION, A SLEEVE MEMBER SLIDABLY MOUNTED ON SAID TUBULAR PORTION, A HOLLOW CHECK VALVE PISTON AT THE END OF SAID SLEEVE MEMBER, MEANS INTERPOSED BETWEEN SAID INTERMEDIATE TRANSVERSE WALL MEANS AND SAID CHECK VALVE PISTON FOR NORMALLY BIASING THE LATTER INTO ENGAGEMENT WITH SAID FIRST VALVE SEAT, SAID CHECK VALVE PISTON BEING DISENGAGEABLE FROM SAID FIRST VALVE SEAT WHEN THE PRESSURE OF FLUID AT SAID INLET OPENING IS GREATER THAN THE PRESSURE OF FLUID WITHIN SAID HOUSING TO PERMIT FLOW OF FLUID THROUGH SAID INLET OPENING INTO SAID HOUSING, SAID CHECK VALVE PISTON WHEN DISENGAGED FROM SAID VALVE SEAT BEING SEATABLE AGAINST SAID SHOULDER PORTION OF SAID TRANSVERSE WALL MEANS WHEREBY TO ELIMINATE FLUTTER AND OSCILLATION OF SAID CHECK VALVE PISTON DURING FLOW OF FLUID THROUGH SAID INLET OPENING INTO SAID HOUSING, SAID INTERMEDIATE TRANSVERSE WALL MEANS HAVING A CYLINDER PORTION, SHUT-OFF VALVE PISTON MEANS BEING SLIDABLE IN SAID CYLINDER PORTION OF SAID INTERMEDIATE TRANSVERSE WALL MEANS, SAID SHUT-OFF VALVE PISTON MEANS HAVING A VALVE CLOSURE PORTION ENGAGEABLE WITH SAID SECOND VALVE SEAT TO PREVENT FLOW OF FLUID FROM SAID HOUSING THROUGH SAID OUTLET OPENING AND HAVING AN EFFECTIVE PISTON PORTION, MEANS FOR SELECTIVELY OPENING THE INTERIOR OF SAID CYLINDER PORTION TO THE ATMOSPHERE FOR REDUCING THE PRESSURE OF FLUID WITHIN SAID SHUT-OFF VALVE PISTON MEANS WHEREUPON THE PRESSURE OF FLUID WITHIN SAID HOUSING EXTERIORLY OF SAID SHUT-OFF VALVE PISTON MEANS INITIALLY EXERTS A FORCE PRIMARILY AGAINST SAID EFFECTIVE PISTON PORTION CAUSING SAID SHUT-OFF VALVE PISTON MEANS TO MOVE INWARDLY OF SAID CYLINDER PORTION OF SAID INTERMEDIATE TRANSVERSE WALL MEANS AND SAID VALVE CLOSURE PORTION TO BE DISENGAGED FROM SAID SECOND VALVE SEAT TO PERMIT FLOW OF FLUID THROUGH SAID OUTLET.
Claim 2
Dependent Claim
335 words
A COMBINED INLINE SHUT-OFF AND CHECK VALVE ASSEMBLY COMPRISING, A HOUSING HAVING AXIALLY ALIGNED INLET AND OUTLET OPENINGS AND INTERMEDIATE TRANSVERSE WALL MEANS, A FIRST VALVE SEAT AT SAID INLET OPENING AND A SECOND VALVE SEAT AT SAID OUTLET OPENING, SAID INTERMEDIATE TRANSVERSE WALL MEANS HAVING A TUBULAR PORTION AND A CONCENTRIC ANNULAR SHOULDER PORTION, A SLEEVE MEMBER SLIDABLY MOUNTED ON SAID TUBULAR PORTION, A HOLLOW CHECK VALVE PISTON AT THE END OF SAID SLEEVE MEMBER, MEANS INTERPOSED BETWEEN SAID INTERMEDIATE TRANSVERSE WALL MEANS AND SAID CHECK VALVE PISTON FOR NORMALLY BIASING THE LATTER INTO ENGAGEMENT WITH SAID FIRST VALVE SEAT, SAID CHECK VALVE PISTON BEING DISENGAGEABLE FROM SAID FIRST VALVE SEAT WHEN THE PRESSURE OF FLUID AT SAID INLET OPENING IS GREATER THAN THE PRESSURE OF FLUID WITHIN SAID HOUSING TO PERMIT FLOW OF FLUID THROUGH SAID INLET OPENING INTO SAID HOUSING, SAID CHECK VALVE PISTON WHEN DISENGAGED FROM SAID VALVE SEAT BEING SEATABLE AGAINST SAID SHOULDER PORTION OF SAID TRANSVERSE WALL MEANS WHEREBY TO ELIMINATE FLUTTER AND OSCILLATION OF SAID CHECK VALVE PISTON DURING FLOW OF FLUID THROUGH SAID INLET OPENING INTO SAID HOUSING, SAID INTERMEDIATE TRANSVERSE WALL MEANS HAVING A CYLINDER PORTION, SHUT-OFF VALVE PISTON MEANS BEING SLIDABLE IN SAID CYLINDER PORTION OF SAID INTERMEDIATE TRANSVERSE WALL MEANS, SAID SHUT-OFF VALVE PISTON MEANS HAVING A VALVE CLOSURE PORTION ENGAGEABLE WITH SAID SECOND VALVE SEAT TO PREVENT FLOW OF FLUID FROM SAID HOUSING THROUGH SAID OUTLET OPENING AND HAVING AN EFFECTIVE PISTON PORTION, MEANS FOR SELECTIVELY OPENING THE INTERIOR OF SAID CYLINDER PORTION TO THE ATMOSPHERE FOR REDUCING THE PRESSURE OF FLUID WITHIN SAID SHUT-OFF VALVE PISTON MEANS WHEREUPON THE PRESSURE OF FLUID WITHIN SAID HOUSING EXTERIORLY OF SAID SHUT-OFF VALVE PISTON MEANS INITIALLY EXERTS A FORCE PRIMARILY AGAINST SAID EFFECTIVE PISTON PORTION CAUSING SAID SHUT-OFF VALVE PISTON MEANS TO MOVE INWARDLY OF SAID CYLINDER PORTION OF SAID INTERMEDIATE TRANSVERSE WALL MEANS AND SAID VALVE CLOSURE PORTION TO BE DISENGAGED FROM SAID SECOND VALVE SEAT TO PERMIT FLOW OF FLUID THROUGH SAID OUTLET.
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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |