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:
Aug. 18, 2009
Filed:
May. 03, 2007
Richard E. Dewald, Clinton, MI (US);
Ute Rueger, Ann Arbor, MI (US);
Kerry C. Smith, Ann Arbor, MI (US);
Timo Walz, Gondelsheim, DE;
Bhawani S. Tripathy, Ann Arbor, MI (US);
Richard E. Dewald, Clinton, MI (US);
Ute Rueger, Ann Arbor, MI (US);
Kerry C. Smith, Ann Arbor, MI (US);
Timo Walz, Gondelsheim, DE;
Bhawani S. Tripathy, Ann Arbor, MI (US);
Federal-Mogul World Wide, Inc., Southfield, MI (US);
Abstract
A method for reducing fuel permeation through gasketed joints in an internal combustion engine () includes surface treating the gaskets in a halogenated medium before placing them into service. A low-cost elastomer such as acrylic, EPDM or HNBR, can be used for the gasket body. The halogenated medium may comprise either a liquid bath or a gaseous bath, into which the gasket is immersed. The halogenated medium bath is excited by heating to accelerate the halogenation process. A gasket treated according to this invention possesses a chemically altered exterior surface which substantially enhances its fuel permeability resistance at relatively low cost.