US3962776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making an oil seal
Assignee: Nok Corp
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Filing: 1975-03-11
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Granted: 1976-06-15
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Expires: 1995-03-11
Abstract
Abstract A method of producing an oil seal with a wavy lip-line by plastically deforming the flange of the metallic ring of the oilseal.
Inventors
- 👤 Yasuo Mikami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:02
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/324; F16J15/328; Y; Y10; Y10S; Y10S277/00; Y10S277/924; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49885; Y10T29/49906; Y10T29/4998; Y10T29/49982
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
77 words
A method of producing an oilseal comprising the steps of: providing a metallic ring having a flange projecting in the direction of the diameter of the ring; providing a resilient oilseal main body having a lip, the surface of which generates a lip line; integrally molding said oilseal main body to the edge of said flange; then plastically deforming at least one portion of said flange so as to impart a curvature section to the lip line.
Claim 2
Independent Claim
77 words
A method of producing an oilseal comprising the steps of: providing a metallic ring having a flange projecting in the direction of the diameter of the ring; providing a resilient oilseal main body having a lip, the surface of which generates a lip line; integrally molding said oilseal main body to the edge of said flange; then plastically deforming at least one portion of said flange so as to impart a curvature section to the lip line.
Claim 3
Dependent Claim
19 words
The method as claimed in claim 1 wherein a plurality of deformed portions of the flange are simultaneously formed.
Claim 4
Dependent Claim
13 words
The method as claimed in claim 1 wherein said flange extends radially inwardly.
Claim 5
Dependent Claim
13 words
The method as claimed in claim 1 wherein said flange extends radially outwardly.
Claim 6
Dependent Claim
38 words
The method as claimed in claim 1 comprising the further step of positioning said integrally molded oilseal on a seal housing so that when the flange is plastically deformed the oilseal is also press-fitted into said seal housing.
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) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |