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:
Jun. 12, 1990
Filed:
Apr. 19, 1989
Applicant:
Inventors:
Oliver Glennon, Ballinasloe, IE;
Liam Kenny, Ballinasloe, IE;
Assignee:
Square D Company, Palatine, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361 45 ; 361 46 ;
Abstract
A ground fault circuit interrupter which continues to provide ground fault protection in the event of loss of neutral includes a blocking means formed by a pair of back-to-back Zener diodes which complete an energizing path for a circuit breaker on loss of neutral. The circuit interrupter also includes a standby rectifier circuit formed by a pair of diodes which complete a full wave rectifier having line and earth inputs in the event of loss of neutral.