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. 25, 2004
Filed:
Nov. 14, 2001
Hideharu Hironaka, Anjo, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
A solenoid valve includes a movable member disposed in a sleeve for moving in an axial direction, a valve mechanism portion opening and closing in accordance with axial movement of the movable member to establish and interrupt fluid communication, a valve chamber exposed to an end surface of the movable member at the valve mechanism portion side and the valve mechanism portion, and a damper chamber exposed to the other end surface of the movable member axially opposite to the end surface at the valve mechanism portion side. The movable member is provided with a throttling portion for establishing fluid communication between the damper chamber and the valve chamber to introduce operational fluid from the damper chamber to the valve chamber. The throttling portion is unitary formed on a sliding surface portion of the movable member.