Twin-tube type shock absorber

Details Twin-tube type shock absorber Twin-tube type shock absorber

1987-06-23

1989-01-03

Kashnikow, Andres

Brakes

Internal-resistance motion retarder

Having a thrust member with a variable volume chamber

18832217, 18832222, 267 6415, F16F 500, F16F 936, F16F 914

Patent

active

047950099

ABSTRACT:
The twin-tube type shock absorber wherein a piston-rod extends downward from a piston and penetrates a lower end portion of an outer shell. Pressurized gas in a reservoir chamber is positioned in an upper portion of the outer shell where the piston-rod does not penetrate the outer shell. Since a seal disposed between the piston-rod and the lower end portion of the outer shell is not exposed to the gas in the reservoir chamber, no gas leakage occurs through the portion where the piston-rod penetrates the outer shell. In addition, the piston-rod is connected to a member disposed on a wheel side of a suspension spring of a vehicle, so that vibrational characteristics of a vehicle body is improved and bubbling of a liquid in the outer shell is suppressed.

REFERENCES:
patent: 2719612 (1955-10-01), De Carbon
patent: 3945663 (1976-03-01), Duckett
patent: 4054277 (1977-10-01), Sirven
patent: 4106596 (1978-08-01), Hausmann
patent: 4386686 (1983-06-01), Miura
patent: 4407396 (1983-10-01), Sirven
patent: 4438834 (1984-03-01), Handke et al.

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