Shock absorber

Details Shock absorber Shock absorber

1995-10-23

1998-12-22

Oberleitner, Robert J.

Brakes

Internal-resistance motion retarder

Motion damped from condition detected outside of retarder

1882991, F16F 500

Patent

active

058508961

ABSTRACT:
An electrically operated shock absorber that includes a pilot chamber and pilot valve which pilot valve is acted on by an electrical solenoid so as to control the damping characteristics of the shock absorber. An arrangement is provided for preventing total bumping of the pressure in the pilot chamber in the event of electrical failure and substituting a pressure responsive valve for controlling the damping characteristics when the electrical failure occurs. An improved piston construction and valving arrangement is also disclosed.

REFERENCES:
patent: 3477466 (1969-11-01), Sturm
patent: 5085299 (1992-02-01), Spiess et al.
patent: 5201388 (1993-04-01), Malm
patent: 5303804 (1994-04-01), Spiess
patent: 5501307 (1996-03-01), Lars
Patent Abstracts of Japan, vol. 940, No. 010 & JP-A-06 280921. European Search Report dated Feb. 23, 1996.

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