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:
May. 01, 2018
Filed:
Oct. 29, 2013
Aisin Aw Co., Ltd., Anjo-shi, Aichi-ken, JP;
Kazunori Ishikawa, Toyota, JP;
Takahiro Kokubu, Nishio, JP;
Masaya Nakai, Tokoname, JP;
Tomomi Ishikawa, Anjo, JP;
AISIN AW CO., LTD., Anjo-shi, Aichi-ken, JP;
Abstract
A plate spring is attached to the distal-end portion of a piston. The distance Lbetween the distal-end portion of a plunger and a core (recessed portion) that faces the distal-end portion of the plunger is set to be shorter than the distance Lbetween the distal-end portion (plate spring) of the piston and the projecting end surface of a valve main body that faces the distal-end portion of the piston with drive of a solenoid portion stopped. Consequently, when the solenoid portion is driven, the plate spring collides against the projecting end surface of the valve main body so that the plunger does not collide against the core. As a result, a shock applied to the piston can be absorbed by the elastic force of the plate spring, which suppresses generation of a sound of collision.