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:
Dec. 13, 1988
Filed:
Feb. 17, 1988
Abel E Kolchinsky, Glenview, IL (US);
Parker-Hannifin Corporation, Cleveland, OH (US);
Abstract
A fluid flow control proportional valve having structure for providing mounting therein of any one of a plurality of different solenoid coils having different electromechanical characteristics for providing desired positioning of the movable valve thereof. The solenoid armature is slidably mounted within the solenoid tube by structure providing extremely low friction so as to provide improved accuracy in correspondence between the current flow through the solenoid coil and resulting positioning of the spool assembly of the valve. The structure for mounting the armature in the solenoid tube further defines a seal between the armature and solenoid tube.