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:
Nov. 20, 1984
Filed:
Sep. 28, 1983
Rudolf Bindel, Grafenberg, DE;
Eugen Ruoff, Urach, DE;
Elring Dichtungswerke GmbH, Fellbach, DE;
Abstract
A cylinder head gasket having at least one plate of soft material and at least one combustion chamber opening, said soft material including predominantly inorganic fibers and/or filling materials connected by binding means and including free OH groups, the soft material is mixed with a first impregnating material comprising a polysiloxane containing reactive hydrogen groups for reaction with the free OH groups of the fibers or filling materials and a second impregnating material which consists of a second polysiloxane of a higher degree of polymerization than the first polysiloxane and which polymerizes with itself as well as with the reactive hydrogen groups of the first polysiloxane, said second polysiloxane forming a stable siloxane structure having more branches than the first polysiloxane.