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:
Nov. 16, 1993
Filed:
Jul. 07, 1992
Applicant:
Inventor:
John W Curnow, Utica, MI (US);
Assignee:
Lectron Products, Inc., Rochester Hills, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
25112915 ; 335262 ; 25112902 ;
Abstract
A solenoid-operated control valve for a variable assist power steering system of an automobile vehicle includes a valve structure which defines a variable flow orifice in response to a predetermined variable (e.g., vehicle velocity) thereby providing fluid pressure needed to modify user input torque supplied to the steering wheel. The valve structure features a unique nonmagnetic core tube which reduces manufacture costs, enhances the ease of assembly of the magnetic housing elements needed to complete a magnetic circuit, and ensures the armature responds as needed to control orifice closure.