Patent US3272472A successfully refreshed from Google Patents.
US3272472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite sealing ring
Assignee: Walworth Co
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Filing: 1965-06-09
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Granted: 1966-09-13
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Expires: 1985-06-09
Abstract
No abstract record available.
Inventors
- 👤 Edward J Goldman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:12
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/06; F16K5/0663; F16K5/0673; F16K5/0678
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A COMPOSITE SEALING RING ADAPTED TO BE INSERTED IN A CYLINDRICAL RECESS OF ONE COOPERATING MEMBER FOR SEALING WITH ANOTHER COOPERATING MEMBER, SAID SEALING RING COMPRISING A METAL BACKING RING U-SHAPED IN CROSS SECTION AND HAVING AN INNER AND OUTER PERIPHERAL RIB WITH A GROOVE THEREBETWEEN, THE OUTER RIB BEING SUBSTANTIALLY CYLINDRICAL AND LONGER THAN THE INER RIB, AND AN ELASTIC COMPRESSIBLE SEALING MEMBER HAVING A BODY IN THE GROOVE OF THE BACKING RING AND A FLANGE PROJECTING OUTWARDLY AWAY FROM THE OUTER RIB OF THE BACKING RING, SAID FLANGE BEING DISPOSED TO MAKE SEALING CONTACT WITH AND TO BE FORCED RADIALLY INWARDLY OF THE RING BY SURROUNDING SURFACES DEFINING THE RECESS IN THE ONE COOPERATING MEMBER IN WHICH IT IS INSERTED, SAID SEALING MEMBER HAVING A FACE EXPOSED IN FRONT OF THE GROOVE IN POSITION TO PROVIDE CONTACT AND SEALING WITH THE OTHER COOPERATING MEMBER.
Claim 2
Dependent Claim
146 words
A COMPOSITE SEALING RING ADAPTED TO BE INSERTED IN A CYLINDRICAL RECESS OF ONE COOPERATING MEMBER FOR SEALING WITH ANOTHER COOPERATING MEMBER, SAID SEALING RING COMPRISING A METAL BACKING RING U-SHAPED IN CROSS SECTION AND HAVING AN INNER AND OUTER PERIPHERAL RIB WITH A GROOVE THEREBETWEEN, THE OUTER RIB BEING SUBSTANTIALLY CYLINDRICAL AND LONGER THAN THE INER RIB, AND AN ELASTIC COMPRESSIBLE SEALING MEMBER HAVING A BODY IN THE GROOVE OF THE BACKING RING AND A FLANGE PROJECTING OUTWARDLY AWAY FROM THE OUTER RIB OF THE BACKING RING, SAID FLANGE BEING DISPOSED TO MAKE SEALING CONTACT WITH AND TO BE FORCED RADIALLY INWARDLY OF THE RING BY SURROUNDING SURFACES DEFINING THE RECESS IN THE ONE COOPERATING MEMBER IN WHICH IT IS INSERTED, SAID SEALING MEMBER HAVING A FACE EXPOSED IN FRONT OF THE GROOVE IN POSITION TO PROVIDE CONTACT AND SEALING WITH THE OTHER COOPERATING MEMBER.
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |