Patent DE204535C successfully refreshed from Google Patents.
Patent US3355142A successfully refreshed from Google Patents.
US3355142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sleeve or piston type valve device
Assignee: Baker Hughes Oilfield Operations LLC
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Filing: 1964-09-29
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Granted: 1967-11-28
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Expires: 1984-09-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Archer W Kammerer
- 👤 Luis F Castro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:51
CPC Classifications
E; E21; E21B; E21B34/00; E21B34/06; E21B34/14; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7854
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
104 words
IN A VALVE DEVICE: A BODY MEMBER HAVING A FLUID PASSAGE; A VALVE MEMBER SHIFTABLE LONGITUDINALLY IN SAID BODY MEMBER TO CONTROL FLOW OF FLUID THROUGH SAID PASSAGE; ONE OF SAID MEMBERS HAVING A SEALING SURFACE; THE OTHER OF SAID MEMBERS HAVING A PAIR OF PLIANT, ELASTIC SEAL RINGS SPACED FROM EACH OTHER AND ENGAGEABLE WITH SAID SEALING SURFACE TO CLOSE SAID PASSAGE, FIRST PORTIONS OF SAID SEAL RINGS DISPOSED TOWARD EACH OTHER HAVING CYLINDRICAL SURFACES ADAPTED TO SEALINGLY ENGAGE SAID SEALING SURFACE, AND SECOND PORTIONS OF SAID SEAL RINGS DISPOSED AWAY FROM EACH OTHER HAVING CIRCUMFERENTIAL RELIEG GROOVES ADJACENT TO SAID CYLINDRICAL SURFACES.
Claim 2
Dependent Claim
104 words
IN A VALVE DEVICE: A BODY MEMBER HAVING A FLUID PASSAGE; A VALVE MEMBER SHIFTABLE LONGITUDINALLY IN SAID BODY MEMBER TO CONTROL FLOW OF FLUID THROUGH SAID PASSAGE; ONE OF SAID MEMBERS HAVING A SEALING SURFACE; THE OTHER OF SAID MEMBERS HAVING A PAIR OF PLIANT, ELASTIC SEAL RINGS SPACED FROM EACH OTHER AND ENGAGEABLE WITH SAID SEALING SURFACE TO CLOSE SAID PASSAGE, FIRST PORTIONS OF SAID SEAL RINGS DISPOSED TOWARD EACH OTHER HAVING CYLINDRICAL SURFACES ADAPTED TO SEALINGLY ENGAGE SAID SEALING SURFACE, AND SECOND PORTIONS OF SAID SEAL RINGS DISPOSED AWAY FROM EACH OTHER HAVING CIRCUMFERENTIAL RELIEG GROOVES ADJACENT TO SAID CYLINDRICAL SURFACES.
Claim 3
Dependent Claim
163 words
IN COMBINATION: A BODY MEMBER; A MEMBER SHIFTABLE LONGITUDINALLY TO SAID BODY MEMBER; ONE OF SAID MEMBERS HAVING A SEALING SURFACE; THE OTHER OF SAID MEMBERS HAVING A PAIR OF PLIANT, ELASTIC SEAL RINGS SPACED FROM EACH OTHER AND ENGAGEABLE WITH SAID SEALING SURFACE TO PREVENT FLUID LEAKAGE BETWEEN SAID MEMBERS; FIRST PORTIONS OF SAID SEAL RINGS DISPOSED TOWARD EACH OTHER HAVING CYLINDRICAL SURFACES ADAPTED TO SEALINGLY ENGAGE SAID SEALING SURFACE, AND SECOND PORTIONS OF SAID SEAL RINGS DISPOSED AWAY FROM EACH OTHER HAVING CIRCUMFERENTIAL RELIEF GROOVES ADJACENT TO SAID CYLINDRICAL SURFACES, EACH RELIEF GROOVE BEING DEFINED BY A FIRST WALL TAPERING AWAY FROM THE CYLINDRICAL SURFACE OF ITS SEAL RING IN A DIRECTION AXIALLY AWAY FROM SAID FIRST POSITION OF ITS SEAL RING AND ALSO AWAY FROM SAID SEALING SURFACE, SAID FIRST WALL MERGING INTO AN INNER GROOVE WALL, SAID INNER WALL MERGING INTO A SECOND WALL TAPERING IN A DIRECTION AXIALLY AWAY FROM SAID FIRST PORTION AND TOWARD SAID SEALING SURFACE.
Claim 4
Dependent Claim
163 words
IN COMBINATION: A BODY MEMBER; A MEMBER SHIFTABLE LONGITUDINALLY TO SAID BODY MEMBER; ONE OF SAID MEMBERS HAVING A SEALING SURFACE; THE OTHER OF SAID MEMBERS HAVING A PAIR OF PLIANT, ELASTIC SEAL RINGS SPACED FROM EACH OTHER AND ENGAGEABLE WITH SAID SEALING SURFACE TO PREVENT FLUID LEAKAGE BETWEEN SAID MEMBERS; FIRST PORTIONS OF SAID SEAL RINGS DISPOSED TOWARD EACH OTHER HAVING CYLINDRICAL SURFACES ADAPTED TO SEALINGLY ENGAGE SAID SEALING SURFACE, AND SECOND PORTIONS OF SAID SEAL RINGS DISPOSED AWAY FROM EACH OTHER HAVING CIRCUMFERENTIAL RELIEF GROOVES ADJACENT TO SAID CYLINDRICAL SURFACES, EACH RELIEF GROOVE BEING DEFINED BY A FIRST WALL TAPERING AWAY FROM THE CYLINDRICAL SURFACE OF ITS SEAL RING IN A DIRECTION AXIALLY AWAY FROM SAID FIRST POSITION OF ITS SEAL RING AND ALSO AWAY FROM SAID SEALING SURFACE, SAID FIRST WALL MERGING INTO AN INNER GROOVE WALL, SAID INNER WALL MERGING INTO A SECOND WALL TAPERING IN A DIRECTION AXIALLY AWAY FROM SAID FIRST PORTION AND TOWARD SAID SEALING SURFACE.
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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) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |