US 3,939,892 A · Making insulator gaskets

Abstract

Methods for forming heat-insulative gasket structures permitting the selective variance of components thereof whereby high torque retention, heat-insulative and fluid-tight sealing characteristics are obtained in an internal combustion engine between the intake manifold and the carburetor throttle body or between the carburetor throttle body and bowl. The method provides for densified and non-compressible bolt hole portions to be achieved by mechanical compression, provision for suitable insert members, or a combination of the two. Such portions provide desirable characteristics to control spring action and torque retention of the structures. The method also provides for formation of fluid-tight compressible sealing beads from the gasket material on one or both sides of the insulator member.

Claims12

Dependent claims

The method of forming heat insulating gasket structures for installation between an automotive engine and a carburetor mounted thereon comprising:

a. die-cutting a member from a sheet of heat insulating material to form a core;
b. providing said core with tab-like portions, some of which have a bolt hole therethrough;
and
c. pressing the core only at the tab-like portions to densify and decrease the volume of the core at the tab-like portions, and
d. applying a gasket layer to at least one side of the core having a density less than that of the core, said gasket structure being thus densified, prior to installation of the gasket structure between said engine and carburetor.

2 more elements

Dependencies are inferred from the claim text.

Making insulator gaskets

Life of this patent

Making insulator gaskets

Life of this patent

Abstract

Claims12