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. 03, 2010
Filed:
Apr. 11, 2007
Takashi Kaneko, Sagamihara, JP;
Takashi Kaneko, Sagamihara, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
The force to draw an armature of an electromagnetic valve apparatus driving a valve for opening or closing a high-pressure liquid passage is increased and valve bouncing is alleviated by a surface of the core being flat and a surface of the armature facing the surface of the core being shaped convexly spherical. Interference of the surfaces is prevented by a smaller initial gap in a central portion of the faces, even when the armature is installed aslant due to insufficient accuracy of the component parts. Strong electromagnetic attraction can be secured because the smaller the gap is, the stronger the electromagnetic attraction.