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. 06, 1990
Filed:
Jun. 22, 1988
Applicant:
Inventor:
Milford M Gesin, Forreston, IL (US);
Assignee:
Honeywell Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J / ; H01H / ; G01N / ;
U.S. Cl.
CPC ...
307 11 ; 307117 ; 324236 ; 340567 ;
Abstract
A controlled electronic switching circuit having a plurality of switches for switching external load circuits at least one of which provides electrical power for the control arrangement and there being at least one switch electrically isolated from the control arrangement. The circuitry, operated as a proximity switch, can be arranged to distinguish between the proximity of ferromagnetic and non-ferromagnetic material objects using a metal layer between the proximity sensing circuit and the object, which layer can be a deposited metal film.