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. 24, 2014
Filed:
Apr. 11, 2011
Christopher Ward, Sycamore, IL (US);
Peter Malone, Glenview, IL (US);
Christopher Ward, Sycamore, IL (US);
Peter Malone, Glenview, IL (US);
Hydac Fluidtechnik GmbH, Sulzbach/Saar, DE;
Abstract
A flow control valve, particularly an electromagnetic proportional directional flow control valve (), has a valve housing (), in which a control piston () is guided to be displaced axially. The control piston () actuates at least one fluid-conducting connection () between a fluid inlet () and an outflow opening (). An actuator part, in particular an armature (), can be actuated by an actuator, particularly a proportional magnet, and acts on the control piston (). A pressure detecting piston () serves for the action of the actuator part on the control piston (). The fluid inlet () is connected in a fluid-conducting manner by a pressure detecting channel () to a pressure detecting chamber () such that the fluid pressure prevailing in the pressure detecting chamber () loads the pressure detecting piston () and the control piston () with a force (F) in the direction of relief of the actuator, and a further fluid-conducting connection () between the fluid inlet () and a further outflow opening () is actuated.