US3794333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasket
Assignee: Fel Pro Inc
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Filing: 1972-07-20
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Granted: 1974-02-26
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Expires: 1992-07-20
Abstract
Abstract A method of making a gasket and a gasket having an elastomeric sealing pattern and a control pattern for limiting the degree of compression of the sealing pattern. A relatively incompressible material, such as an epoxy resin formulation is positioned on the face of a gasket to protect a relatively compressible material, such as a silicone rubber and prevents its destruction. The epoxy and silicone patterns may be deposited by silk screening processes.
Inventors
- 👤 D Czernik
- 👤 Dowell D Mc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:04
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/12; F16J15/121; F16J15/122; F16J15/123
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
180 words
A gasket providing for controlled compressibility of an annular elastomeric seal on a face thereof, a gasket base providing a first gasket face and defining at least one aperture therein, an annular seal pattern deposited and cured on said face and surrounding a said aperture, said seal pattern comprising a relatively compressible, elastomeric material different from the material of said first gasket face, a selected control pattern deposited and cured on said face and spaced inwardly of edges of said first gasket face and spaced from the edges of said apertures, said control pattern comprising control material of a lesser degree of compressibility than said seal pattern, said control material being different from the material of said first gasket face and from said elastomeric material, said seal pattern and said control pattern each projecting outwardly from said gasket face, whereby when said gasket is positioned and compressed between a pair of contronting surfaces to be sealed by said annular seal pattern, the control pattern limits compression of said annular seal pattern and resists destructive compression of said annular seal pattern.
Claim 2
Dependent Claim
180 words
A gasket providing for controlled compressibility of an annular elastomeric seal on a face thereof, a gasket base providing a first gasket face and defining at least one aperture therein, an annular seal pattern deposited and cured on said face and surrounding a said aperture, said seal pattern comprising a relatively compressible, elastomeric material different from the material of said first gasket face, a selected control pattern deposited and cured on said face and spaced inwardly of edges of said first gasket face and spaced from the edges of said apertures, said control pattern comprising control material of a lesser degree of compressibility than said seal pattern, said control material being different from the material of said first gasket face and from said elastomeric material, said seal pattern and said control pattern each projecting outwardly from said gasket face, whereby when said gasket is positioned and compressed between a pair of contronting surfaces to be sealed by said annular seal pattern, the control pattern limits compression of said annular seal pattern and resists destructive compression of said annular seal pattern.
Claim 3
Dependent Claim
23 words
A gasket in accordance with claim 1 wherein said selected control pattern comprises at least two pattern segments near said annular seal pattern.
Claim 4
Dependent Claim
44 words
A gasket in accordance with claim 1 wherein there are a plurality of said annular seal patterns on said face and said control pattern is positioned to limit compression of said annular seal patterns and to resist destructive compression of said annular seal patterns.
Claim 5
Dependent Claim
16 words
A gasket in accordance with claim 1 in which said stop material comprises an exoxy resin.
Claim 6
Dependent Claim
22 words
A gasket in accordance with claim 1 in which said control material projects outwardly from said face beyond said annular seal pattern.
Claim 7
Dependent Claim
29 words
A gasket in accordance with claim 1 wherein said control pattern is an annular pattern concentric with said annular seal pattern and functions also to provide a secondary seal.
Claim 8
Dependent Claim
37 words
A gasket in accordance with claim 1 wherein said gasket base has a second gasket face, and a said annular seal pattern and a said selected control pattern are also deposited and cured on said second face.
References Cited (Backward Citations)
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Cited
US3191950A
Cited
US3352564A
Cited
US3473813A
Cited
US3608914A
Cited
US3704021A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |