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:
Nov. 08, 1988
Filed:
Sep. 23, 1987
Bridgestion Corporation, Tokyo, JP;
Abstract
A magnet for control valve includes a housing having an inlet and an outlet for a pressurized fluid, a valve seat member having a conical inner surface valve seat, a spherical valve body adapted to be in line contact with the valve seat, a throttle adjusting plate made of a magnetic material shiftable toward and away from the valve seat, and an electromagnet for attracting and releasing the throttle adjusting plate to shift the valve body toward and away from the valve seat. According to the invention a sheet, preferably made of urethane foam is arranged on a side of the throttle adjusting plate opposite to the valve body, thereby eliminating noise caused by self-oscillation of the valve body and throttle adjusting plate, while maintaining high responsibility as a magnetic control valve.