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:
Apr. 05, 2005
Filed:
Aug. 29, 2002
Todd P. Geib, Fairport, NY (US);
Craig D. Smith, Penfield, NY (US);
Christopher D. Marlowe, Henrietta, NY (US);
Mark A. Reeves, Hamlin, NY (US);
Jerry L. Kelly, Rochester, NY (US);
Mahoro M. Fujita, Fairport, NY (US);
Mark S. Lockwood, Victor, NY (US);
Paul L. Gluchowski, Rochester, NY (US);
Todd P. Geib, Fairport, NY (US);
Craig D. Smith, Penfield, NY (US);
Christopher D. Marlowe, Henrietta, NY (US);
Mark A. Reeves, Hamlin, NY (US);
Jerry L. Kelly, Rochester, NY (US);
Mahoro M. Fujita, Fairport, NY (US);
Mark S. Lockwood, Victor, NY (US);
Paul L. Gluchowski, Rochester, NY (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
An exhaust gas recirculation valve having a reciprocating pintle shaft supported by a sleeve bushing and having a labyrinthine pathway between a valve operating chamber and a shaft/bushing interface to minimize intrusion of exhaust gases into the interface. The labyrinthine pathway is formed between fixed annular elements of the valve body and shaft bushing and a movable annular element of the valve head telescopically disposed between the fixed elements.