Shock absorber

Details Shock absorber Shock absorber

1988-11-28

1990-11-20

Oberleitner, Robert J.

Brakes

Internal-resistance motion retarder

Having a thrust member with a variable volume chamber

188315, 18832222, F16F 946, F16F 949

Patent

active

049711806

ABSTRACT:
A shock absorber includes a cylinder, a piston disposed movably in the cylinder to partition the interior of the cylinder into first and second liquid chambers and having two groups of ports affording communication between the first and second liquid chambers, a valve body disposed so as to open and close the port of each group in the piston and a piston rod connected with the piston and projecting from the cylinder to the outside. The shock absorber further includes a liquid path affording communication between the first and second liquid chambers without passing through the piston, first and second valves for generating respectively damping force with liquid flowing through the liquid path and regulator provided in the piston rod and capable of blocking liquid from flowing through the two groups of ports in the piston.

REFERENCES:
patent: 3272495 (1966-09-01), Axthammer
patent: 3559776 (1971-02-01), Schultze
patent: 4561524 (1985-12-01), Mizumukai et al.
patent: 4660689 (1987-04-01), Hayashi et al.
patent: 4706787 (1987-11-01), Wossner
patent: 4732408 (1988-03-01), Ohlin
patent: 4821851 (1989-04-01), Kruckemeier et al.

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