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. 25, 2011
Filed:
Sep. 12, 2006
Kenichi Gunji, Mito, JP;
Keiji Kawahara, Hitachinaka, JP;
Shuichi Shimizu, Oarai, JP;
Atsushi Sekine, Hitachinaka, JP;
Masafumi Nakano, Hitachi, JP;
Kenichi Gunji, Mito, JP;
Keiji Kawahara, Hitachinaka, JP;
Shuichi Shimizu, Oarai, JP;
Atsushi Sekine, Hitachinaka, JP;
Masafumi Nakano, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An injection valve has a nozzle body, a valve needle positioned in the nozzle body, an actuator for actuating the valve needle, and an orifice plate fixed at an end of the nozzle body. The orifice plate has a valve seat for cooperating with the valve needle and an orifice for injecting a fluid. The orifice plate is provided with a projection having a convex-curved surface on an orifice outlet side of the orifice plate. A flat surface portion is formed in the area of the convex-curved surface, and the outlet of the orifice is located in the flat surface portion.