Speed indicator and speed signalling device for vehicles in general

Claim 1

A speed indicator and speed signalling device for a vehicle, characterized by the fact that it comprises, in combination: a rotating supported shaft adapted to be connected to a vehicle drive, a centrifugal governor supported by said shaft for rotation therewith, a signalling unit comprising electric lamps having different signalling characteristics, each one corresponding to a different value of vehicle speed, said lamps being connectable to an electric energy source through an electrical contact device, comprising stationary contacts spaced apart in a direction generally parallel to said shaft, each of said contacts being electrically connected to one of said lamps, and a mobile slider having electric contact elements connected to said energy source, said slider being operatively connected to said centrifugal governor for sliding movement therewith in the direction of said shaft, according to variations in the vehicle speed, said electric contact elements of the slider comprising two spaced contact members aligned in the direction of the reciprocating motion of the slider, with a distance between them substantially equal to the distance between the trailing edge of one of the fixed contaCts and the leading edge of another of the fixed contacts, whereby, by the slider movement, when the vehicle speed varies, the electric feeding circuit of said lamps is completed, alternatively through one and the other of the contact members of the slider.