US3180650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Split-ring oil seal with reinforcing element
Assignee: ILLINOIS MILLING Inc
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Filing: 1963-05-29
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Granted: 1965-04-27
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Expires: 1983-05-29
Abstract
No abstract record available.
Inventors
- 👤 Joseph M Liebig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:28
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3268; F16J15/3272; F16J15/3248
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A SEAL FOR PREVENTING SEEPAGE OF FLUID FROM A HOUSING HAVING A CIRCULAR OPENING THROUGH WHICH A ROTATABLE SHAFT CONCENTRICALLY PROJECTS, SUCH HOUSING HAVING AN ANNULAR GROOVE THEREIN OPENING TOWARDS SUCH SHAFT, SAID SEAL COMPRISING: A PAIR OF SEMI-CIRCULAR SEALING MEMBERS SUCH INCLUDING A SUBSTANTIALLY U-SHAPED METALLIC REINFORCING ELEMENT OPENING RADIALLY OUTWARDLY AND HAVING A PAIR OF DIVERGING SIDEWALLS; A PAIR OF SEMI-CIRCUMFERENTIAL RIMS ARE UNITED WITH ONE SIDEWALL OF SAID U-SHAPED ELEMENT AND TOGETHER SPAN SUBSTANTIALLY THE AXIAL WIDTH OF SAID SEAL
Claim 2
Dependent Claim
83 words
A SEAL FOR PREVENTING SEEPAGE OF FLUID FROM A HOUSING HAVING A CIRCULAR OPENING THROUGH WHICH A ROTATABLE SHAFT CONCENTRICALLY PROJECTS, SUCH HOUSING HAVING AN ANNULAR GROOVE THEREIN OPENING TOWARDS SUCH SHAFT, SAID SEAL COMPRISING: A PAIR OF SEMI-CIRCULAR SEALING MEMBERS SUCH INCLUDING A SUBSTANTIALLY U-SHAPED METALLIC REINFORCING ELEMENT OPENING RADIALLY OUTWARDLY AND HAVING A PAIR OF DIVERGING SIDEWALLS; A PAIR OF SEMI-CIRCUMFERENTIAL RIMS ARE UNITED WITH ONE SIDEWALL OF SAID U-SHAPED ELEMENT AND TOGETHER SPAN SUBSTANTIALLY THE AXIAL WIDTH OF SAID SEAL
References Cited (Backward Citations)
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Cited
US2474713A
Cited
US2647002A
Cited
US2723142A
Cited
US2719743A
Cited
US3027167A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-26 | 1968-10-26 | 1969-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-26 | 1972-10-26 | 1973-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-26 | 1976-10-26 | 1977-04-27 | $7700.00 | Window Closed / Lapsed |