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US3729205A Expired / Lapsed US ⏱️ 0.0 years remaining

Gaskets

Assignee: Individual
•
Filing: 1971-01-07
•
Granted: 1973-04-24
•
Expires: 1991-01-07
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Abstract

Abstract Rubber gaskets internally reinforced with flexible relatively incompressible, preferably fibrous material and externally coated with rubbery material such as coagulated neoprene latex and preferably having at least one concave surface are described. The preferred gaskets are designed to receive a structure to be sealed within the concave surface so that the structure contacts the concave surface in at least two sealing lines. The gaskets are further characterized by having relatively thin rubbery coatings on certain surfaces and relatively thicker coatings on other surfaces in order to provide improved sealing integrity; the thickness of said relatively thin and thick coatings being specified. Methods of making the gaskets are also described.

Inventors

  • 👤 M Kwok

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 12:54
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/104; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24488; Y10T428/24777

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 46 words
An automotive valve cover gasket according to claim 1 having the following dimensions: Thickness in Inches Approximate Range Maximum Minimum Finished Gasket 0.250 0.063 Inner Member 0.094 0.031 Rubber Coatings: Upper Surface 0.094 0.016 Lower Surface 0.094 0.016 Inner Edge 0.094 0.016 Outer Edge 0.094 0.016
Claim 2
Dependent Claim 49 words
An automotive valve cover gasket according to claim 2 wherein the finished gasket has a thickness of about 0.156 inch, an inner member about 0.062 inch in thickness, upper and lower surface coatings about 0.047 inch in thickness and edge coatings of about 0.016 to 0.094 inch in thickness.

References Cited (Backward Citations)

FR1252163A Cited
US3206229A Cited
US3622427A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-04-23 1976-10-23 1977-04-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-04-23 1980-10-23 1981-04-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-04-23 1984-10-23 1985-04-24 $7700.00 Window Closed / Lapsed

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