Driving habit monitor and sensor therefor

Abstract From the Canadian patent

The disclosure goes beyond prior art that shows G-level sensors which merely actuate warning bells etc. in, that the display is of the number of excesses of G-level per unit time. According to the invention the, rate at which a person exceeds a pre-set limit of G-level is a measure of the violence of his driving. Besides this novel form of display or presentation a, novel G-level sensor is disclosed. The sensor comprises a short length of polyethylene tubing, sealed with polyethylene plugs and containing a blob of mercury. The tube is bent over a saddle to provide a central curved portion and two straight arms. Wires are pushed through the walls of the tube near the ends of the arms, to act …