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:
Jan. 13, 1976
Filed:
Feb. 22, 1972
Applicant:
Inventor:
Paul Muchnick, Norwalk, CT (US);
Assignee:
Harvey Hubbell, Incorporated, Bridgeport, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H / ; G08B / ;
U.S. Cl.
CPC ...
317 / ; 324133 ; 3402 / ;
Abstract
A ground fault interrupter (GFI) provided with a reversed line polarity lamp indicator to indicate proper installation of the GFI. The reversed line polarity lamp indicator includes a push button and a lamp connected in series between the line conductor of the GFI and ground. In a wiring system having a ground conductor, the series connection is between the line and the ground conductor in which case the reversed line polarity lamp indicator may also be used to check for open circuits in the ground conductor.