Bruce R Rossini

US Patent:

20030006887, Jan 9, 2003

Filed:

Jul 3, 2002

Appl. No.:

10/189613

Inventors:

Bruce Rossini - Whitmore Lake MI, US
Julien Tudor - Clinton Twp. MI, US

International Classification:

B60Q001/00

US Classification:

340/425500, 340/463000

Abstract:

A motion detector for use with trailers and the like. The motion detector includes a modular unit with its own power source, a motion detector, logic circuit and electro-audio warning device. The power supply is preferably a rechargeable battery. The motion detector may be an ultra-sonic motion detector which uses the Doppler effect to determine motion. The motion detector produces a signal which indicates the direction of travel and the speed of movement. The logic system discriminates between forward and reverse motion and issues a signal when the vehicle is moving in a reverse direction. The signal activates an electro-audio device which produces a pulse audio warning in response to the movement.