Patent US3377075A successfully refreshed from Google Patents.
US3377075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotating shaft seal retainer
Assignee: Allis Chalmers Corp
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Filing: 1966-01-19
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Granted: 1968-04-09
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Expires: 1986-01-19
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Feller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:25
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A SHAFT SEAL COMPRISING: A HOUSING HAVING A BORE THERETHROUGH; A SHAFT EXTENDING THROUGH SAID BORE; WALLS OF SAID HOUSING DEFINING AN ANNULAR CHAMBER ABOUT SAID SHAFT; A SEAL ELEMENT POSITIONED INSAID CHAMBER IN SEAL ING ASSOCIATION WITH SAID SHAFT; FIRST MEANS ON SAID SEAL ELEMENT PRESENTING A SUBSTANTIALLY RADIALLY EXTENDING SURFACE; SECOND MEANS ON SAID HOUSING PRESENTING A SUBSTANTIALLY RADIALLY EXTENDING SURFACE, SAID FIRST AND SECOND MEANS BEING IN SUBSTANTIAL ALIGNMENT; AND A LEAF SPRING RETAINER ENGAGING THE SUBSTANTIALLY RADIALLY EXTENDING SURFACES OF BOTH SAID FIRST AND SECOND MEANS, SAID LEAF SPRING BEING OF SUFFICIENT LENGTH TO REQUIRE BENDING THEREOF FOR INSERTION BETWEEN SAID SEAL ELEMENT AND SAID HOUSING WHEREBY THE ENDS OF SAID LEAF SPRING ENGAGE SAID SECOND MEANS AND THE CENTER PORTION OF SAID LEAF SPRING ENGAGES SAID FIRST MEANS TO HOLD SAID SEAL ELEMENT AGAINST AXIAL MOVEMENT.
Claim 2
Dependent Claim
141 words
A SHAFT SEAL COMPRISING: A HOUSING HAVING A BORE THERETHROUGH; A SHAFT EXTENDING THROUGH SAID BORE; WALLS OF SAID HOUSING DEFINING AN ANNULAR CHAMBER ABOUT SAID SHAFT; A SEAL ELEMENT POSITIONED INSAID CHAMBER IN SEAL ING ASSOCIATION WITH SAID SHAFT; FIRST MEANS ON SAID SEAL ELEMENT PRESENTING A SUBSTANTIALLY RADIALLY EXTENDING SURFACE; SECOND MEANS ON SAID HOUSING PRESENTING A SUBSTANTIALLY RADIALLY EXTENDING SURFACE, SAID FIRST AND SECOND MEANS BEING IN SUBSTANTIAL ALIGNMENT; AND A LEAF SPRING RETAINER ENGAGING THE SUBSTANTIALLY RADIALLY EXTENDING SURFACES OF BOTH SAID FIRST AND SECOND MEANS, SAID LEAF SPRING BEING OF SUFFICIENT LENGTH TO REQUIRE BENDING THEREOF FOR INSERTION BETWEEN SAID SEAL ELEMENT AND SAID HOUSING WHEREBY THE ENDS OF SAID LEAF SPRING ENGAGE SAID SECOND MEANS AND THE CENTER PORTION OF SAID LEAF SPRING ENGAGES SAID FIRST MEANS TO HOLD SAID SEAL ELEMENT AGAINST AXIAL MOVEMENT.
References Cited (Backward Citations)
US1339297A
Cited
FR28259E
Cited
GB277806A
Cited
GB355570A
Cited
AT176401B
Cited
GB763373A
Cited
US2914348A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |