US3304050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve seat
Assignee: Henry Pratt Co LLC
•
Filing: 1963-04-01
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Granted: 1967-02-14
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Expires: 1983-04-01
Abstract
No abstract record available.
Inventors
- 👤 Donald G Fawkes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:39
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/14; F16K5/20; F16K5/205; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/226; F16K1/2263
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
STRUCTURE FOR SEALING A FIRST VALVE MEMBER TO AN ADJACENT SEALING SURFACE OF A SECOND VALVE MEMBER, COMPRISING: MEANS ON THE FIRST VALVE MEMBER DEFINING A CHANNEL HAVING SAID WALLS, AN OPENING CONFRONTING SAID SEALING SURFACE OF THE SECOND VALVE MEMBER, AND A BOTTOM SURFACE; A SEAL ON SAID FIRST MEMBER IN ADJUSTED FIXED POSITION FORMED OF A RESILIENTLY DISTORTABLE MATERIAL HAVING AN INNER PORTION DISPOSED IN CONTACT WITH SAID SIDE WALLS, AND AN OUTER PORTION IN CONTACT WITH SAID SEALING SURFACE, SAID SEAL HAVING A CONFIGURATION PERMITTING MOVEMENT OF THE ENTIRE SEAL BODILY RELATIVE TO SAID CHANNEL TO SAID ADJUSTED POSITION; AND A SET MASS OF PLASTIC MATERIAL IN THE CHANNEL BETWEEN SAID SEAL AND SAID BOTTOM SURFACE BODILY POSITIONING THE SEAL TO ENGAGE SAID SEALING SURFACE AND COMPRESSING THE SEAL AGAINST SAID SEALING SURFACE TO HAVE UNIFORM SEALING ENGAGEMENT THEREWITH, SAID SEAL BEING CONFINED ONLY BY SAID SEALING SURFACE, SAID SIDE WALLS OF SAID CHAN-
Claim 2
Dependent Claim
157 words
STRUCTURE FOR SEALING A FIRST VALVE MEMBER TO AN ADJACENT SEALING SURFACE OF A SECOND VALVE MEMBER, COMPRISING: MEANS ON THE FIRST VALVE MEMBER DEFINING A CHANNEL HAVING SAID WALLS, AN OPENING CONFRONTING SAID SEALING SURFACE OF THE SECOND VALVE MEMBER, AND A BOTTOM SURFACE; A SEAL ON SAID FIRST MEMBER IN ADJUSTED FIXED POSITION FORMED OF A RESILIENTLY DISTORTABLE MATERIAL HAVING AN INNER PORTION DISPOSED IN CONTACT WITH SAID SIDE WALLS, AND AN OUTER PORTION IN CONTACT WITH SAID SEALING SURFACE, SAID SEAL HAVING A CONFIGURATION PERMITTING MOVEMENT OF THE ENTIRE SEAL BODILY RELATIVE TO SAID CHANNEL TO SAID ADJUSTED POSITION; AND A SET MASS OF PLASTIC MATERIAL IN THE CHANNEL BETWEEN SAID SEAL AND SAID BOTTOM SURFACE BODILY POSITIONING THE SEAL TO ENGAGE SAID SEALING SURFACE AND COMPRESSING THE SEAL AGAINST SAID SEALING SURFACE TO HAVE UNIFORM SEALING ENGAGEMENT THEREWITH, SAID SEAL BEING CONFINED ONLY BY SAID SEALING SURFACE, SAID SIDE WALLS OF SAID CHAN-
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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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |