Patent US1652455A successfully refreshed from Google Patents.
Patent US3360274A successfully refreshed from Google Patents.
US3360274A
Expired / Lapsed
US
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Lip seal with supporting lip
Assignee: JOHN CRANE HOUDAILLE Inc A CORP OF
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Filing: 1965-05-12
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Granted: 1967-12-26
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Expires: 1985-05-12
Abstract
No abstract record available.
Inventors
- 👤 James A Grant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:41
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/38; F16J15/002; F16J15/004; Y; Y10; Y10S; Y10S277/00; Y10S277/916; Y10S277/93
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
A MECHANICAL SEAL FOR SEALING AN ANNULAR OPENING BETWEEN RELATIVELY ROTATING MACHINE ELEMENTS, SAID SEAL COMPRISING A RING OF RELATIVELY HARD MATERIAL ENCIRCLING ONE OF SAID ELEMENTS, A RADIALLY EXTENDING LIP ON SAID RING CONTACTING THE SAID ONE OF SAID ELEMENTS, SAID LIP HAVING SLITS THEREIN TO LEND FLEXIBILITY TO SAID LIP, EACH OF SAID SLITS HAVING TWO ENDS AND BEING ANGULARLY DISPOSED RELATIVE TO THE AXIS OF THE RING WITH ONE END OF EACH OF SAID SLITS CIRCUMFERENTIALLY DISPLACED FROM THE OTHER END THEREOF TO ACCOMMODATE EXPANSION AND CONTRACTION OF SAID LIP, AN ELASTOMERIC RING ENCIRCLING SAID ONE OF SAID ELEMENTS, MEANS EFFECTING A FLUID-TIGHT SEAL BETWEEN THE ELASTOMERIC RING AND THE OTHER OF SAID RELATIVELY ROTATABLE ELEMENTS, MEANS EFFECTING A FLUID-TIGHT SEAL BETWEEN THE ELASTOMERIC RING AND THE RING OF RELATIVELY HARD MATERIAL, AND MEANS FOR EFFECTIING A SEAL ACROSS THE SLITS IN THE RING OF RELATIVELY HARD MATERIAL.
Claim 2
Dependent Claim
151 words
A MECHANICAL SEAL FOR SEALING AN ANNULAR OPENING BETWEEN RELATIVELY ROTATING MACHINE ELEMENTS, SAID SEAL COMPRISING A RING OF RELATIVELY HARD MATERIAL ENCIRCLING ONE OF SAID ELEMENTS, A RADIALLY EXTENDING LIP ON SAID RING CONTACTING THE SAID ONE OF SAID ELEMENTS, SAID LIP HAVING SLITS THEREIN TO LEND FLEXIBILITY TO SAID LIP, EACH OF SAID SLITS HAVING TWO ENDS AND BEING ANGULARLY DISPOSED RELATIVE TO THE AXIS OF THE RING WITH ONE END OF EACH OF SAID SLITS CIRCUMFERENTIALLY DISPLACED FROM THE OTHER END THEREOF TO ACCOMMODATE EXPANSION AND CONTRACTION OF SAID LIP, AN ELASTOMERIC RING ENCIRCLING SAID ONE OF SAID ELEMENTS, MEANS EFFECTING A FLUID-TIGHT SEAL BETWEEN THE ELASTOMERIC RING AND THE OTHER OF SAID RELATIVELY ROTATABLE ELEMENTS, MEANS EFFECTING A FLUID-TIGHT SEAL BETWEEN THE ELASTOMERIC RING AND THE RING OF RELATIVELY HARD MATERIAL, AND MEANS FOR EFFECTIING A SEAL ACROSS THE SLITS IN THE RING OF RELATIVELY HARD MATERIAL.
References Cited (Backward Citations)
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Cited
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FR1258972A
Cited
US3204988A
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US3099454A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |