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:
Mar. 03, 1998
Filed:
Mar. 19, 1997
Applicant:
Inventors:
Bernard J Hrytzak, Chatham, CA;
Takeshi Gomi, Saitama, JP;
Hirotomi Nemoto, Saitama, JP;
Yoshio Yamamoto, Saitama, JP;
Assignees:
Siemens Electric Limited, Ontario, CA;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
25112915 ;
Abstract
Improvements in a head (44) of a pintle (38) and associated valve seat (34) of an EGR valve (10) for providing a desired geometric relationship between respective tapered surfaces (36c, 104) that close against each other and for reducing tendency for carbon build-up. A blind hole (108) extends centrally axially inward from the lower end face (107) of the pintle head, reducing the mass, and hence thermal inertia, but without affecting the desired geometric relationship of the seat to the pintle head.