Patent US3275332A successfully refreshed from Google Patents.
US3275332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil seal
Assignee: Federal Mogul LLC
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Filing: 1964-03-02
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Granted: 1966-09-27
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Expires: 1984-03-02
Abstract
No abstract record available.
Inventors
- 👤 Evalyn S May
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:05
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3268; F16J15/3276
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
IN OIL SEALS FOR USE IN PROVIDING A SUBSTANTIALLY FLUIDTIGHT SEAL BETWEEN A MOVABLE SHAFT MEMBER AND A HOUSING MEMBER HAVING A BORE THROUGH WHICH SAID SHAFT EXTENDS AND WHEREIN SAID SEAL IS PROVIDED WITH A CYLINDRICAL SURFACE ADAPTED TO HAVE A PRESS FIT WITH A CYLINSAID MEMBERS, THE IMPROVEMENT COMPRISING A THIN LAYER, AT LEAST AS THICK AS THE AVERAGE SURFACE ROUGHNESS OF SAID BORE, OF CURED CHLOROSULFONATED POLYETHYLENE BONDED TO SAID CYLINDRICAL SURFACE, SAID MATERIAL RESPONDING TO HIGH SHEARING AND PRESSURE FORCES SO THAT WHEN SUCH FORCES ACT DURING THE ASSEMBLY OF THE SEAL INTO THE BORE OF A HOUSING MEMBER THEY CAUSE SAID MATERIAL TO MOVE AND FILL IMPERFECTIONS IN THE BORE WALL AND FORM A FLUID-TIGHT SEAL THEREWITH AS WELL AS A STRONG JOINT BETWEEN SAID OIL SEAL AND THE BORE WALL, WITH ANY EXCESS REMAINING COHERENT AND BALLING RATHER THAN CRUMBLING.
Claim 2
Dependent Claim
146 words
IN OIL SEALS FOR USE IN PROVIDING A SUBSTANTIALLY FLUIDTIGHT SEAL BETWEEN A MOVABLE SHAFT MEMBER AND A HOUSING MEMBER HAVING A BORE THROUGH WHICH SAID SHAFT EXTENDS AND WHEREIN SAID SEAL IS PROVIDED WITH A CYLINDRICAL SURFACE ADAPTED TO HAVE A PRESS FIT WITH A CYLINSAID MEMBERS, THE IMPROVEMENT COMPRISING A THIN LAYER, AT LEAST AS THICK AS THE AVERAGE SURFACE ROUGHNESS OF SAID BORE, OF CURED CHLOROSULFONATED POLYETHYLENE BONDED TO SAID CYLINDRICAL SURFACE, SAID MATERIAL RESPONDING TO HIGH SHEARING AND PRESSURE FORCES SO THAT WHEN SUCH FORCES ACT DURING THE ASSEMBLY OF THE SEAL INTO THE BORE OF A HOUSING MEMBER THEY CAUSE SAID MATERIAL TO MOVE AND FILL IMPERFECTIONS IN THE BORE WALL AND FORM A FLUID-TIGHT SEAL THEREWITH AS WELL AS A STRONG JOINT BETWEEN SAID OIL SEAL AND THE BORE WALL, WITH ANY EXCESS REMAINING COHERENT AND BALLING RATHER THAN CRUMBLING.
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |