Warning device for the brake fluid of hydraulic brake systems of

Details Warning device for the brake fluid of hydraulic brake systems of Warning device for the brake fluid of hydraulic brake systems of

1988-07-25

1990-06-12

Myracle, Jerry W.

Measuring and testing

Brake testing

Vehicle installation

116206, 188 111, 200 6104, 340453, G08B 2100

Patent

active

049322478

ABSTRACT:
A warning device for detecting mineral oil impurities in the brake fluid of hydraulic vehicle brake systems is described. The warning device comprises a body which is arranged in the brake fluid and can swell as a result of mineral oil and the change of shape of which indicates the presence of mineral oil impurities. The indication is given particularly as a result of the fact that the change in shape brought about by the swelling causes the opening or closing of an electrical circuit and thereby actuates a visual or acoustic indicator in the dashboard of the vehicle.

REFERENCES:
patent: 3970865 (1976-07-01), Kishikawa et al.
patent: 4566805 (1986-01-01), Klein et al.

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