Hydraulic shock absorber with out-of-limit indicator

Details Hydraulic shock absorber with out-of-limit indicator Hydraulic shock absorber with out-of-limit indicator

1977-10-25

1979-02-27

Ruehl, Charles A.

Measuring and testing

Testing of shock absorbing device

In situ vehicle suspension

73574, G01M 1704

Patent

active

041412362

ABSTRACT:
A hydraulic shock absorber incorporates a piezoelectric pressure sensor and an electromagnetic velocity sensor coupled to an integrated circuit to measure the force/velocity characteristic of the shock absorber. When the characteristic falls outside predetermined values, the circuit delivers an electrical output to an electro-chemical color change cell to indicate failure of the shock absorbers.

REFERENCES:
patent: 1921624 (1933-08-01), Lewis
patent: 3833094 (1974-09-01), Grossman
patent: 3946598 (1976-03-01), Towne et al.
patent: 3981174 (1976-09-01), Himmler

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