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:
Apr. 08, 1980
Filed:
Mar. 20, 1978
Applicant:
Inventors:
Robert E Dietz, Cedar Rapids, IA (US);
Henry J Zylstra, Alburnette, IA (US);
Assignee:
Square D Company, Palatine, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361 45 ; 335253 ; 361117 ;
Abstract
A ground fault circuit interrupter which utilizes one trip coil to perform the combined functions of interrupting a circuit on occurrence of a ground fault as well as an under voltage condition. An electronic module supplies continuous current to the trip coil until a ground fault or under voltage condition occurs. The armature is spring biased in a direction away from the trip coil, with tension of the spring adjusted to pull the armature away from the trip coil when voltage in the coil decreases below a selected amplitude.