Patent US3279804A successfully refreshed from Google Patents.
US3279804A
Expired / Lapsed
US
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End face seal assembly
Assignee: Chicago Rawhide Manufacturing Co Inc
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Filing: 1963-07-05
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Granted: 1966-10-18
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Expires: 1983-07-05
Abstract
No abstract record available.
Inventors
- 👤 Richard W Blair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:28
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3436; F16J15/344
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
AN END FACE SEAL ASSEMBLY COMPRISING: A SEALING RING INCLUDING A SEALING FACE, AND A COMBINATION SECONDARY SEALING AND SPRING MEMBER ENGAGING SAID SEALING RING REARWARDLY OF THE SEALING FACE THEREOF, SAID SECONDARY MEMBER BEING OF ANNULAR AND GENERALLY RECTANGULAR CONFIGURATION HAVNG A FIRST MARGINAL PORTION THEREOF FIXED TO SAID SEALING RING AND A SECOND MARGINAL PORTION POSITIONED IN RADIALLY SPACED RELATION FROM SAID SEALING RING FOR FIXED MOUNTING ON A PART OF AN INSTALLATION WITH WHICH SAID SEAL ASSEMBLY IS ADAPTED FOR USE, SAID SECONDARY MEMBER BEING FORMED FROM RUBBER-LIKE RESILIENT MATERIAL
Claim 2
Dependent Claim
93 words
AN END FACE SEAL ASSEMBLY COMPRISING: A SEALING RING INCLUDING A SEALING FACE, AND A COMBINATION SECONDARY SEALING AND SPRING MEMBER ENGAGING SAID SEALING RING REARWARDLY OF THE SEALING FACE THEREOF, SAID SECONDARY MEMBER BEING OF ANNULAR AND GENERALLY RECTANGULAR CONFIGURATION HAVNG A FIRST MARGINAL PORTION THEREOF FIXED TO SAID SEALING RING AND A SECOND MARGINAL PORTION POSITIONED IN RADIALLY SPACED RELATION FROM SAID SEALING RING FOR FIXED MOUNTING ON A PART OF AN INSTALLATION WITH WHICH SAID SEAL ASSEMBLY IS ADAPTED FOR USE, SAID SECONDARY MEMBER BEING FORMED FROM RUBBER-LIKE RESILIENT MATERIAL
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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |