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:
Jan. 23, 2007
Filed:
Aug. 27, 2004
Shigeto Ryuen, Miyagi, JP;
Hiroyuki Chiba, Miyagi, JP;
Masamichi Kagawa, Miyagi, JP;
Akira Nagasaki, Miyagi, JP;
Shigeto Ryuen, Miyagi, JP;
Hiroyuki Chiba, Miyagi, JP;
Masamichi Kagawa, Miyagi, JP;
Akira Nagasaki, Miyagi, JP;
Keihin Corporation, Tokyo, JP;
Abstract
A valve device including a valve chamber having an inlet port at one end and a valve seat at the other end; a valve housing containing the valve chamber; the valve chamber accommodating a spherical valve element which performs opening and closing operation to the valve seat, and a valve spring which urges the valve element in a closing direction; and a push rod which penetrates a center hole of the valve seat and pushes the valve element in an opening direction. A cylindrical valve guide member is fit into the valve chamber, the cylindrical valve guide member including a plurality of guide projections on an inner peripheral surface to guide opening and closing operation of the valve element. Grooves between the plurality of guide projections serve as passages providing communication between the inlet port and the valve seat.