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. 28, 2002
Filed:
Jul. 27, 2000
Tadahiro Ohmi, Aoba-ku, Sendai-shi, Miyagi-ken 980, JP;
Migaku Takahashi, Taihaku-ku, Sendai-shi, Miyagi-ken 982-02, JP;
Michio Yamaji, Osaka-fu, JP;
Tsuyoshi Tanikawa, Osaka-fu, JP;
Nobukazu Ikeda, Osaka-fu, JP;
Ryosuke Dohi, Osaka-fu, JP;
Kouji Nishino, Osaka-fu, JP;
Naofumi Yasumoto, Osaka-fu, JP;
Hiroyuki Fukuda, Osaka-fu, JP;
Tomio Uno, Osaka-fu, JP;
Yasuyuki Yanai, Miyagi-ken, JP;
Other;
Abstract
A fluid control valve, which can control a fluid having a pressure in the order of 10 kg/cm , has a response time in the order of several milliseconds can be made small in size, and a fluid supply/exhaust system that provides less gas counter flow in the event of a plurality of valves being used. A fluid control valve of the invention controls a fluid moving in a valve body by closing and opening a portion between a valve seat and a valve holder by use of a drive unit. The drive unit has a rod-shaped shaft for application of pressure through the valve seat and the valve holder, and a member “a” fixed around the rod-shaped shaft. The member “a” is made from a magnetic material, and has a space between it and the shaft. A coil provided in parallel to the shaft, moves the shaft via the member “a” up and down by electromagnetic induction, and makes use of a spring force to close and open a portion between the valve seat and the valve holder.