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:
Jun. 14, 1983
Filed:
Feb. 26, 1981
Terence P Nicholson, Derwentside, County Durham, GB;
Other;
Abstract
A gasket for sealing the joint between the cylinder head and exhaust manifold of an internal combustion engine comprises a flat sheet metal base layer (1) having an opening or openings (A) therein corresponding to the number of cylinder head and exhaust manifold ports around which a seal is required, a second layer in the form of a radially corrugated metal annulus or annuli (2) applied to the base layer (1) around the or each opening (A), with the radially inner parts of the or each annulus (2g) spaced apart from the base layer (1) around the or each opening (A), and a sheet metal layer (D) which effectively increases the thickness of the base layer (1) in regions of the base layer which surround securing stud apertures (C) therein. The layer (D) may be formed by folding over the base layer sheet (1) or alternatively it may be a separately attached sheet metal layer.