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:
Mar. 30, 1993
Filed:
Dec. 01, 1983
Applicant:
Inventor:
Toru Kita, Yokosuka, JP;
Assignee:
Nissan Motor Co. Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D / ; H01G / ;
U.S. Cl.
CPC ...
123357 ; 123494 ; 7311 / ; 361292 ;
Abstract
A position sensor for a valve or the like includes a first electrode disposed about the valve or a member associated therewith in a manner that the interfacial area betwen the valve and the electrode remains constant irrespective of the position of the valve. One or more second electrodes are disposed in a manner that the interfacial area between the valve and the electrode varies with the position of the valve. By sensing the change in electrostatic capacity between the electrodes the position of the valve may be detected. The sensor finds application in a fuel injection pump wherein it permits a very compact solenoid (motor)/sensor arrangement.