US3199540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve device
Assignee: Westinghouse Air Brake Co
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Filing: 1962-09-28
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Granted: 1965-08-10
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Expires: 1982-09-28
Abstract
No abstract record available.
Inventors
- 👤 Walter R Forster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:24
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/04; F16K27/041; F16J; F16J15/00; F16J15/16; F16J15/32; F16K11/00; F16K11/02; F16K11/06; F16K11/065; F16K11/07; F16K11/0712; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86694; Y10T137/8671
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A SEALER ASSEMBLY FOR DISPOSITION IN A BORE IN A CASING TO EFFECT A SEAL BETWEEN THE CASING AND A MEMBER MOVABLE IN THE BORE, COMPRISING: (A) AN ANNULAR SEALER MEMBER FOR REMOVABLE DISPOSITION IN SAID BORE IN COAXIAL RELATIONSHIP THEREWITH AWND COMPRISING A PAIR OF RESILIENT CONCENTRICALLY DISPOSED ANNULAR MEMBERS SEPARATED AND SUPPORTED BY A RIGID ANNULAR MEMBER, WHEREBY THE OUTER ANNULAR RESILIENT MEMBER OF SAID PAIR OF ANNULAR RESILIENT MEMBERS IS ADAPTED TO SEALINGLY ENGAGE THE CASING AND THE INNER RESILIENT MEMBER OF SAID PAIR OF CONCENTRIC RESILIENT MEMBERS IS ADAPTED TO SEALING ENGAGE THE MOVABLE MEMBER, AND (B) AN ANNULAR RIGID SPACER ELEMENT REMOVABLY DISPOSED ON EACH SIDE OF SAID SEALER MEMBER IN ABUTTING RELATIONSHIP WITH SAID ANNULAR RIGID MEMBER, EACH RIGID SPACER ELEMENT INCLUDING A SHOULDER ENGAGING THE ANNULAR RIGID MEMBER TO DISPOSE SAID ANNULAR RIGID MEMBER COAXIALLY WITH SAID RIGID SPACER ELEMENT IN SAID BORE.
Claim 2
Dependent Claim
150 words
A SEALER ASSEMBLY FOR DISPOSITION IN A BORE IN A CASING TO EFFECT A SEAL BETWEEN THE CASING AND A MEMBER MOVABLE IN THE BORE, COMPRISING: (A) AN ANNULAR SEALER MEMBER FOR REMOVABLE DISPOSITION IN SAID BORE IN COAXIAL RELATIONSHIP THEREWITH AWND COMPRISING A PAIR OF RESILIENT CONCENTRICALLY DISPOSED ANNULAR MEMBERS SEPARATED AND SUPPORTED BY A RIGID ANNULAR MEMBER, WHEREBY THE OUTER ANNULAR RESILIENT MEMBER OF SAID PAIR OF ANNULAR RESILIENT MEMBERS IS ADAPTED TO SEALINGLY ENGAGE THE CASING AND THE INNER RESILIENT MEMBER OF SAID PAIR OF CONCENTRIC RESILIENT MEMBERS IS ADAPTED TO SEALING ENGAGE THE MOVABLE MEMBER, AND (B) AN ANNULAR RIGID SPACER ELEMENT REMOVABLY DISPOSED ON EACH SIDE OF SAID SEALER MEMBER IN ABUTTING RELATIONSHIP WITH SAID ANNULAR RIGID MEMBER, EACH RIGID SPACER ELEMENT INCLUDING A SHOULDER ENGAGING THE ANNULAR RIGID MEMBER TO DISPOSE SAID ANNULAR RIGID MEMBER COAXIALLY WITH SAID RIGID SPACER ELEMENT IN SAID BORE.
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) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |