US4201804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasket impregnated with a polymerizable liquid and method for its manufacture
Assignee: Goetzewerke Friedrich Goetze AG
•
Filing: 1978-06-26
•
Granted: 1980-05-06
•
Expires: 1998-06-26
Abstract
Abstract A gasket made of a fibrous and/or porous material is impregnated with a liquid saturating agent consisting essentially of an organic, synthetic and completely polymerizable liquid that does not contain agents which will evaporate during polymerization of the liquid.
Inventors
- 👤 Friedhelm Stecher
- 👤 Josef Fazekas
- 👤 Paul Johren
- 👤 Martin Morsbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:49
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/102; F16J15/12; F16J15/121; F16J15/122; Y; Y10; Y10T; Y10T428/00; Y10T428/21; Y10T428/215; Y10T428/24; Y10T428/24273; Y10T428/24281; Y10T428/24289; Y10T428/24322
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
45 words
A method of forming a gasket comprising impregnating a fibrous and/or porous material with a liquid saturating agent consisting essentially of an organic, synthetic and completely polymerizable liquid that does not contain agents which will evaporate during polymerization of the liquid, and polymerizing the liquid.
Claim 2
Independent Claim
45 words
A method of forming a gasket comprising impregnating a fibrous and/or porous material with a liquid saturating agent consisting essentially of an organic, synthetic and completely polymerizable liquid that does not contain agents which will evaporate during polymerization of the liquid, and polymerizing the liquid.
Claim 3
Dependent Claim
19 words
The method according to claim 1 wherein the liquid saturating agent is polymerized either thermally, peroxidically, or with sulfur.
Claim 4
Dependent Claim
32 words
The method according to claim 1 wherein the liquid saturating agent is partially polymerized, before the gasket is installed in an engine, to a point where the gasket still is plastically deformable.
Claim 5
Dependent Claim
27 words
The method as defined in claim 3 including placing the gasket in an engine and completely polymerizing the saturating agent by the heat generated by the engine.
Claim 6
Dependent Claim
24 words
The method as defined in claim 1 wherein not all of the pores of the soft material are completely filled with the polymerizable liquid.
Claim 7
Dependent Claim
17 words
The method as defined in claim 1 wherein the liquid saturating agent contains solid substances in dispersion.
Claim 8
Dependent Claim
18 words
The method as defined in claim 1 wherein the solid substances are graphite or talcum to counteract tackiness.
Claim 9
Dependent Claim
15 words
The method as defined in claim 1 wherein the polymerizable liquid consists essentially of polybutadiene.
References Cited (Backward Citations)
US2077669A
Cited
US2330106A
Cited
US2992151A
Cited
US2977248A
Cited
US3814619A
Cited
US3661401A
Cited
US3970322A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-05-06 | 1983-11-05 | 1984-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-06 | 1987-11-05 | 1988-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-06 | 1991-11-05 | 1992-05-06 | $7700.00 | Window Closed / Lapsed |