Combined pilot light and ground testing assembly
AssigneeAlco Electronic Products, Inc.
InventorFrancis D. Kirchoff
Life of this patent
Estimating the term…
Abstract
A combined pilot light and ground testing assembly for conventional 120 volt A.C. circuits is secured in the front panel of an electric console, secured to the male A.C. plug at the end of a cable, or secured to other appropriate equipment. It includes a pair of lamp chambers spaced from a third lamp in rectilinear alignment. When both of the juxtaposed pair of chambers are lit as a dual pilot light a perfect condition exists. Any other combination of lighted lamp chambers indicates an unsafe condition in the circuitry.
Claims4
A circuit tester for checking a standard grounded three wire electrical outlet to determine if said outlet is properly wired:
- said circuit tester being of the type having a hollow, insulating case with a front wall, a pair of side walls, a top wall, a bottom wall, a rear opening and integral partitions extending from front to rear across the interior thereof to form three rectilinearly aligned chambers therewithin;
- said tester being characterized by:
- said hollow case being of one piece of translucent plastic with three said partitions spaced apart therein to form a pair of juxtaposed said chambers and a third said chamber at a spaced distance therefrom;
- said partitions being of less depth than the depth of the said walls of said case to provide a circuit board compartment at the rear of said case;
- a circuit board located in said circuit board compartment, said board supporting a pair of juxtaposed lamps, and a third lamp spaced apart therefrom, each said lamp being enclosed within one of said chambers and electrically connected, through said circuit board to a three prong connection in said outlet;
- a sleeve of opaque material lining each said chamber to light shield one said chamber from another;
- and a rear wall forming a closure to the rear opening of said case.
Dependencies are inferred from the claim text.