Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – In vehicle wiring
Patent
1990-03-15
1992-02-04
Wieder, Kenneth A.
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
In vehicle wiring
324 66, 340431, G01R 3100
Patent
active
050862774
ABSTRACT:
Testing apparatus is coupled to the plug used to connect the electrical system of a towed or trailer vehicle with a main or powered vehicle. The plug typically has terminals which connect related trailer vehicle electrical components with components in the main vehicle, e.g., the back up lights of the trailer vehicle are coupled to the back up lights (or transmission reverse gear) of the main vehicle. After coupling the testing apparatus to the plug portion attached to the trailer vehicle, switches can be used to activate selectively the trailer vehicle components. Instruments in the testing apparatus measure the electrical response to each activation and can be used to determine when the components are operating correctly. Similarly, when the portion of the plug coupled to the main vehicle is coupled to the testing apparatus, the response to activation of the main vehicle components can be monitored by the same instruments.
REFERENCES:
patent: 3103808 (1963-09-01), Eichelberger
patent: 3428888 (1969-02-01), Nolte
patent: 3663939 (1972-05-01), Olsson
patent: 4866390 (1989-09-01), Butchko
patent: 4878025 (1989-10-01), Persson
patent: 4884032 (1989-11-01), LaPensee
Mueller Robert W.
Wieder Kenneth A.
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