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:
Jun. 05, 2012
Filed:
Apr. 07, 2010
Charles C. Hansen, Iii, Hinsdale, IL (US);
Erik J. Guldberg, Darien, IL (US);
William H. Yeadon, Iron River, MI (US);
Bradley M. Frustaglio, Germantown, WI (US);
Charles C. Hansen, III, Hinsdale, IL (US);
Erik J. Guldberg, Darien, IL (US);
William H. Yeadon, Iron River, MI (US);
Bradley M. Frustaglio, Germantown, WI (US);
Parker-Hannifin Corporation, Cleveland, OH (US);
Abstract
A valve having a valve body having spaced inlet and outlet ports separated by an intermediate valve seat in open communication with the inlet and outlet ports includes a piston and a valve member being adapted to sealingly mate with the valve seat. A biasing member is positioned to bias the valve member toward the valve seat. A linear motor assembly attached to the valve body, the linear motor having a plurality of stator discs, a plurality of stator coils, a plurality of teeth defining a cylindrical opening, and a slider positioned within the cylindrical opening. The slider has a plurality of teeth defining a generally cylindrical outer periphery of the slider and is movable in response to magnetic flux generated by electrical current passing through one or more of the stator coils.