US3290047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relief seal with dual sealing surfaces
Assignee: North American Aviation Corp
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Filing: 1963-02-11
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Granted: 1966-12-06
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Expires: 1983-02-11
Abstract
No abstract record available.
Inventors
- 👤 John F Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:08
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/08; F16J15/0887; F02; F02K; F02K9/00; F02K9/42; F02K9/60; Y; Y10; Y10S; Y10S277/00; Y10S277/928
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A SEAL COMPRISING: AN ANNULAR MEMBER HAVING A CONTINUOUS RING BASE PORTION, A FIRST FLEXIBLE SIDE WALL INTEGRAL WITH AND EXTENDING FROM SAID RING BASE PORTION, SAID SIDE WALL HAVING A FIRST SEALING SURFACE ON THE OUTER SIDE OF SAID SIDE WALL AND A SECOND SEALING SURFACE ON SAID RING BASE PORTION, A SECOND FLEXIBLE SIDE WALL INTEGRAL WITH AND EXTENDING FROM SAID RING BASE PORTION, SAID SECOND SIDE WALL HAVING A THIRD SEALING SURFACE ON THE OUTER SIDE OF SAID SECOND SIDE WALL AND A FOURTH SEALING SURFACE ON SAID RING PORTION OPPOSITE SAID SECOND SEALING SURFACE, ALL OF SAID SEALING SURFACES BEING OF A RELATIVELY SOFTER MATERIAL THAN SAID RING PORTION AND SIDE WALLS, SAID SIDE WALLS FORMING A U-SHAPED CHANNEL AND BEING PRESSURE ACTUATABLE IN A DIRECTION TOWARD THE RESPECTIVE SIDE WALL SEALING SURFACE,
Claim 2
Dependent Claim
137 words
A SEAL COMPRISING: AN ANNULAR MEMBER HAVING A CONTINUOUS RING BASE PORTION, A FIRST FLEXIBLE SIDE WALL INTEGRAL WITH AND EXTENDING FROM SAID RING BASE PORTION, SAID SIDE WALL HAVING A FIRST SEALING SURFACE ON THE OUTER SIDE OF SAID SIDE WALL AND A SECOND SEALING SURFACE ON SAID RING BASE PORTION, A SECOND FLEXIBLE SIDE WALL INTEGRAL WITH AND EXTENDING FROM SAID RING BASE PORTION, SAID SECOND SIDE WALL HAVING A THIRD SEALING SURFACE ON THE OUTER SIDE OF SAID SECOND SIDE WALL AND A FOURTH SEALING SURFACE ON SAID RING PORTION OPPOSITE SAID SECOND SEALING SURFACE, ALL OF SAID SEALING SURFACES BEING OF A RELATIVELY SOFTER MATERIAL THAN SAID RING PORTION AND SIDE WALLS, SAID SIDE WALLS FORMING A U-SHAPED CHANNEL AND BEING PRESSURE ACTUATABLE IN A DIRECTION TOWARD THE RESPECTIVE SIDE WALL SEALING SURFACE,
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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |