Condition indicating device for wheeled vehicle shock absorbers

Details Condition indicating device for wheeled vehicle shock absorbers Condition indicating device for wheeled vehicle shock absorbers

1980-04-30

1982-02-23

Caldwell, Sr., John W.

Communications: electrical

Selective

Having indication or alarm

73503, 73593, 307 10R, 307121, 340683, G01M 1704, G08B 2100

Patent

active

043171052

ABSTRACT:
According to the invention, an accelerometer (G) is attached on the spring suspension (U) of the wheel (H) in question and capable upon passing of the vehicle over road irregularities to emit a decaying A.C. signal (S) with information on the oscillations of the axle (A) and the damping of the tire. After integration in an integrator (I) the signal is a measure of the difference between the damping of the shock absorber at expansion and at compression. This signal is compared in a comparator (K) with a reference signal (V.sub.ref) for the permissible damping difference and results in alarm (L) upon achieving said difference.

REFERENCES:
patent: 3455149 (1969-07-01), Foster et al.
patent: 3744321 (1973-07-01), Hauge
patent: 3921945 (1975-11-01), Swain
patent: 3937152 (1976-02-01), Nilsson et al.
patent: 4209779 (1980-06-01), Beck et al.

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