Trailer systems tester

Details Trailer systems tester Trailer systems tester

1995-09-07

1997-02-11

Wieder, Kenneth A.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

In vehicle wiring

324503, 340431, 73129, G01L 528

Patent

active

056024827

ABSTRACT:
A portable diagnostic device for checking electrical signalling systems of road going trailers. The device has several receptacles for connection to a corresponding receptacle or pin connector of most types of trailers. An electrical circuit includes switches for energizing individual signalling or illumination circuits of the trailer individually, and indicating lamps for annunciating circuit operability. The device, which is contained on a wheeled cart, has its own power supply and circuit overcurrent protective devices, and is thus independent of a tractor which normally generates the signals. The device enables a shop to perform a safety check for many varieties of trailers, while remaining independent of the tractor vehicles associated with the trailers.

REFERENCES:
patent: 3663939 (1972-05-01), Olsson
patent: 3737767 (1973-06-01), Slutsky
patent: 4547722 (1985-10-01), Sarlo
patent: 4586370 (1986-05-01), Massender
patent: 4750354 (1988-06-01), Knestel
patent: 4866390 (1989-09-01), Butchko
patent: 5095276 (1992-03-01), Nepil
patent: 5132664 (1992-07-01), Feldmann et al.
patent: 5251967 (1993-10-01), Eberling
patent: 5287085 (1994-02-01), Smith

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