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. 04, 1988
Filed:
Sep. 23, 1987
James P Janecke, Waukesha, WI (US);
Ronald C Koltz, Hartland, WI (US);
Applied Power Inc., Butler, WI (US);
Abstract
A hydraulic pressure control valve includes a modulator-controlled solenoid assembly which selectively axially displaces a disc armature adjacent thereto. When not attracted by the solenoid, the armature is biased away from the solenoid by a wave spring. Movement of the armature opens and closes the outlet of a lower body member to a source of hydraulic fluid under pressure. The armature is improved, having dimples on the face adjacent the solenoid assembly to minimize sticking. Additionally, the center pole of the solenoid is axially adjustable and can therefore be set for different valve performance levels. Assembly of the valve is quickly accomplished using pneumatic pressure under performance conditions for adjustment of and setting the initial displacement of the disc armature. Setting is accomplished by crimping the various components in an outer tube.