An automatic warning device for awakening the driver of a vehicle when dozing

Abstract

Abstract 711,647. Retractive switches. BONANDRINI, S. Feb. 13, 1952 [Feb. 14, 1951], No. 3876/52. Class 38(5) A switch for completing the circuit of a warning device should a vehicle driver relax his grip of a steering-wheel comprises a ring 1 secured to the inside of the rim C of the' steering-wheel and having a movable flange 2 which, when pressed upwardly as shown in Fig. 2, moves contact springs 4 out of. engagement with co-operating contact springs. When the pressure on the flange is relaxed, the springs 4 move the flange 2 down and reengage their co-operating springs to complete the warning circuit. The ring 1 is secured to the steering-wheel rim by means of U-shaped clamping plates 8 which engage a protruding part N of the rim. Removal of the ring 1 may be effected by sliding members 10 to which the plates 8 are secured, so that the plates 8 are brought into register with recesses 11 in the part N, as shown in Fig. 4.

Inventors

No inventors recorded.

Bibliographic Details