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:
Oct. 08, 2013
Filed:
Feb. 03, 2010
Wilford Dean Virgin, Spring Grove, IL (US);
Deepak Ponnavolu, Glenview, IL (US);
Michael Shirilla, Chicago, IL (US);
Carlos Santiago, Deerfield, IL (US);
Curtis Arthur Brandt, Lindenhurst, IL (US);
Wilford Dean Virgin, Spring Grove, IL (US);
Deepak Ponnavolu, Glenview, IL (US);
Michael Shirilla, Chicago, IL (US);
Carlos Santiago, Deerfield, IL (US);
Curtis Arthur Brandt, Lindenhurst, IL (US);
Federal-Mogul Corporation, Southfield, MI (US);
Abstract
A multi-layered composite gasket () includes three, preferably metallic cores (). A solid center core () is flanked on both sides by bonded paper layers (). Perforated cores () mechanically interlock with each paper layer () through inwardly directed tangs (). Graphite layers () are disposed outside of each perforated core () and are mechanically interlocked thereto by outwardly directed tangs () extending from the perforated cores (). When using the gasket () material for sealing cylinder heads in internal combustion engines, a fire ring () may be affixed with a fire ring holder (). The gasket () can be manufactured by making first and second preform sheets () comprised of one perforated core () sided with one paper layer () and one graphite layer (). The preform sheets () are then bonded to a center core () using a heat activated adhesive. Combining rollers () compress and densify the layers to form the completed material set which can be stored on a coil () or cut into sheets.