The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 08, 1986
Filed:
Nov. 16, 1984
Applicant:
Inventor:
Robert M Gibbons, Fort Worth, TX (US);
Assignee:
Jamak, Inc., Ft. Worth, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; F16J / ;
U.S. Cl.
CPC ...
277228 ; 277-1 ; 277D / ; 156329 ; 428405 ;
Abstract
An improved silicone rubber gasket having improved oil resistance, permeability characteristics and compressive set characteristics. The silicone rubber composition utilized is made from an organopolysiloxane gum, a silica filler, a quantity of hollow microspheres, and a curing catalyst. The polysiloxane, microspheres, and filler material are first blended to form the uncured rubber compositions. The rubber composition is then mixed with a suitable catalyst and cured in the desired shape. The microspheres are selected to have the requisite strength for being milled or mixed into the silicone rubber compound without fracturing.