US3758123A
Expired / Lapsed
US
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Omega seal
Assignee: Parker Hannifin Corp
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Filing: 1970-02-19
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Granted: 1973-09-11
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Expires: 1990-02-19
Abstract
Abstract This disclosure relates to a seal of omega cross sectional shape having a middle portion or central loop which is reinforced by being radially corrugated thereby providing a higher elastic deflection and a higher recovery than a conventional omega seal of like dimensions.
Inventors
- 👤 K Ksieski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:53
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/08; F16J15/0887; F16J15/021; F16J15/022; F16J15/024; F16J15/025
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
53 words
A seal of upper case omega cross sectional shape having a central loop and a pair of terminal legs, said seal being characterized by said central loop having a means providing a reinforced central portion providing for an increase in resistance to elastic deflection, said reinforced central portion being of a corrugated configuration.
Claim 2
Dependent Claim
53 words
A seal of upper case omega cross sectional shape having a central loop and a pair of terminal legs, said seal being characterized by said central loop having a means providing a reinforced central portion providing for an increase in resistance to elastic deflection, said reinforced central portion being of a corrugated configuration.
Claim 3
Dependent Claim
15 words
The omega seal of claim 1 wherein said central loop is of a uniform thickness.
Claim 4
Dependent Claim
12 words
The omega seal of claim 1 wherein said corrugations are primarily radial.
Claim 5
Dependent Claim
21 words
The omega seal of claim 1 wherein said corrugations are primarily radial and merge into end portions of said central loop.
Claim 6
Dependent Claim
34 words
The omega seal of claim 1 wherein said corrugations have a maximum extent of 180* about the transverse section of said central loop and are a maximum at the center of said central loop.
Claim 7
Dependent Claim
43 words
The omega seal of claim 1 wherein said corrugations have a maximum extent of 180* about the transverse section of said central loop and are a maximum at the center of said central loop with said corrugations tapering from a maximum to zero.
Claim 8
Dependent Claim
15 words
The omega seal of claim 1 wherein said corrugations are primarily radial and spaced circumferentially.
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |