Flat sealing material made of a soft substance, particularly for the production of gaskets that are to be subjected to high stresses
AssigneesGoetze AG, Frenzelit Asbestwerke GmbH & Co. KG
InventorsHorst Beyer, Hans-Rainer Zerfass, Heribert Bechen, Hans Haack, Franz Kutnar
Life of this patent
Estimating the term…
Abstract
A soft gasket material comprising an asbestos-free fiber material containing fibers and an organic binder, the soft gasket material being comprised of a fiber sheet containing at least three different intermixed types of fibers, namely (a) natural organic fibers, (b) synthetic organic fibers, and (c) at least one fiber type selected from mineral fibers and metal fibers, and being additionally comprised of powdered to finely fibrous fillers and at least one organic binder.
Claims14
In an internal combustion cylinder head gasket the improvement comprising an asbestos-free soft gasket material having the characteristics of strength, heat resistance, and elasticity required for use as an internal combustion engine cylinder head gasket and containing fibers and an organic binder, comprising a fiber sheet consisting essentially of at least three different intermixed types of fibers, namely
- (a) natural organic fibers,
- (b) synthetic organic fibers, and
- (c) at least one type of fiber selected from mineral fibers and metal fibers, and
- containing at least one inorganic filler selected from the group of powders consisting of kaolin, porcelain earth, heavy spar, talcum, gypsum, chalk, titanium dioxide, silicon dioxide, calcium silicate, powdered metal, ground slag, diatomaceous earth and ground mineral fibers, the ground mineral fibers being at least one ground fiber of rock wool, glass wool, slag wool or aluminum silicate or fine fibers having lengths of less than 0.4 mm and
- containing at least one organic binder.
Dependencies are inferred from the claim text.