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:
Oct. 23, 2007
Filed:
Dec. 16, 2004
Shigeru Ozawa, Nagano, JP;
Tetsuhiko Hara, Nagano, JP;
Shigeru Ozawa, Nagano, JP;
Tetsuhiko Hara, Nagano, JP;
NIDEC Sankyo Corporation, Nagano, JP;
Abstract
A valve device includes a main body case to which an inflow pipe and an outflow pipe are connected, a valve element which is disposed inside of the main body case to open or close an outflow aperture part of the main body case, a motor for moving the valve element in an open direction and a closed direction, a valve element drive means which is driven by the motor and includes a rotary member rotated by the motor and a rotation side permanent magnet mounted in the rotary member, a valve element side permanent magnet mounted in the valve element, and a holding member which movably holds the valve element. The valve element is urged in the open direction or the closed direction by a magnetic attractive force or a magnetic repulsive force generated between the rotation side permanent magnet and the valve element side permanent magnet.