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. 16, 1999
Filed:
Apr. 11, 1997
Frank C Grant-Acquah, Hanover Park, IL (US);
Kanu G Shah, Arlington Heights, IL (US);
Thomas P Plunkett, Lemont, IL (US);
Dana Corporation, Toledo, OH (US);
Abstract
A cylinder head gasket of the present invention includes a main gasket body and a metallic generally U-shaped flange which engages the inner periphery of a combustion bore opening formed in the main gasket body. A coating including tetrafluoroethylene and a high temperature resin binder such as either a polyimide or a polyamide-imide polymer are applied to at least the flange after it is formed and the entire gasket then cured at high temperatures in a series of steps including sintering to securely bond the coating to the flange. An optional plating layer disposed between the coating and the base material of the flange further improves bonding.