초록 ▼

A system is provided for indicating excessive wear of brake linings. The system is usable on vehicles such as automobiles, cars, trucks and busses as well as aircraft or other applications where it is desirable to detect excessive wear of brake linings during operation thereof. The system includes a

A system is provided for indicating excessive wear of brake linings. The system is usable on vehicles such as automobiles, cars, trucks and busses as well as aircraft or other applications where it is desirable to detect excessive wear of brake linings during operation thereof. The system includes an acoustical signal generating device having an air inlet normally closed by the brake lining. When the lining wears away to a minimum safe thickness, the inlet is opened and ambient air flows into the generator to produce an acoustical signal. An acoustical receiver is positioned in spaced operative relation to the brake system and responds to the acoustical signal to provide a warning indication on the dashboard, for example, of the vehicle so that the operator of the vehicle will be alerted to the worn brake condition.

대표청구항 ▼

A brake wear warning system for use on a wheeled vehicle equipped with brakes in which the brakes include at least one rotatable brake member and at least one relatively fixed element mounted for limited movement to and away from said member, said element provided with a lining adapted to frictional

A brake wear warning system for use on a wheeled vehicle equipped with brakes in which the brakes include at least one rotatable brake member and at least one relatively fixed element mounted for limited movement to and away from said member, said element provided with a lining adapted to frictionally engage said member upon actuation of said element, comprising (a) an acoustical signal generator mounted to said element and adapted to produce an acoustical signal when a flow of ambient air passes therethrough, (b) ambient air flow control means connected to said generator and to said lining, (c) said means adapted to open said generator to the flow of ambient air when said lining has worn to a predetermined thickness, said flow of air produced by the motion of said vehicle, (d) detector means mounted to said vehicle for sensing an acoustical signal from said generator and producing an electrical signal therefrom, (e) electrical signal processing means connected to said detector means, and, (f) alarm means connected to said processing means for alerting the operator of said vehicle.