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:
Apr. 24, 2007
Filed:
Jan. 25, 2006
Bunya Hayashi, Tsukuba-gun, JP;
Shinji Miyazoe, Tsukuba-gun, JP;
Shinichi Yoshimura, Tsukuba-gun, JP;
Bunya Hayashi, Tsukuba-gun, JP;
Shinji Miyazoe, Tsukuba-gun, JP;
Shinichi Yoshimura, Tsukuba-gun, JP;
SMC Corporation, Tokyo, JP;
Abstract
In a switching valve containing a valve member for opening and closing a valve seat and a piston for driving the valve member by the action of a pilot fluid pressure inside a valve housing, a magnet for positional detection is attached to the piston, two sensor attachment grooves extending in the direction of the axial line L of the switching valve and having different groove lengths in accordance with the operational position are formed in parallel on the side face of the valve housing, and magnetic sensors are attached at locations on the side of the innermost end wall in the attachment grooves.