Vehicle hydraulic shock absorber and indicating system

Details Vehicle hydraulic shock absorber and indicating system Vehicle hydraulic shock absorber and indicating system

1975-04-14

1976-04-06

Halvosa, George E. A.

Brakes

With condition indicator

Electrical

73304C, 188322, 317246, 324 61R, 340244C, F16D 6300

Patent

active

039483592

ABSTRACT:
A vehicle shock absorber and indicating system including a hydraulic shock absorber having two electrically conductive, relatively movable portions which are electrically insulated from one another to form a capacitor whose capacitance changes with changing levels of hydraulic fluid in the shock absorber. The two relatively movable portions are secured to the vehicle through respective electrically insulating bushings whose deterioration varies the capacitance between the two relatively movable portions when secured to the vehicle. A capacitance responsive circuit is electrically coupled to the two relatively movable portions of the hydraulic shock absorber and generates a signal representative of the condition of the vehicle shock absorber.

REFERENCES:
patent: 3375716 (1968-04-01), Hersch
patent: 3833094 (1974-09-01), Grossman

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