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. 27, 1998
Filed:
Nov. 19, 1996
Applicant:
Inventor:
Michael J Golden, Sterling Heights, MI (US);
Assignee:
ISI Norgren, Inc., Anoka, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E03B / ;
U.S. Cl.
CPC ...
137554 ; 251351 ; 137557 ; 346686 ;
Abstract
A shiftable valve spool has a plurality of distinct targets carried thereon. The targets are preferably axially spaced and located at one end of the valve spool. A detector mounted in the valve detects each target as each target enters a detection field of the detector. The detector generates a distinct output indicative of one target positioned within the detection field of the detector. A control determines, in response to the output from the detector, the exact valve spool position.