Hydraulic shock absorber

Details Hydraulic shock absorber Hydraulic shock absorber

1991-10-18

1993-09-28

Oberleitner, Robert J.

Brakes

Internal-resistance motion retarder

Resistance alters relative to direction of thrust member

188319, 18832215, F16F 950

Patent

active

052480143

ABSTRACT:
A hydraulic shock absorber for use in a suspension system of a vehicle has the flow of a hydraulic fluid, induced in a hydraulic fluid passage providing communication between two cylinder chambers by the sliding motion of a piston in a cylinder, controlled to generate a damping force, thereby making the vehicle comfortable to ride in and improving the steering stability. The hydraulic shock absorber comprises a tubular guide communicating at both ends thereof with the two cylinder chambers, respectively. A shutter slidably fits in the tubular guide. A chamber is formed in the guide at one end of the shutter, the chamber communicating with one of the two cylinder chambers through a first orifice passage. A second orifice passage is provided in the side wall of the tubular guide, the second orifice passage being opened and closed by the sliding motion of the shutter, and a bypass passage provides communication between the two cylinder chambers through the second orifice passage.

REFERENCES:
patent: 4453638 (1984-06-01), Wallace
patent: 4795008 (1989-01-01), Joseph et al.
patent: 5044474 (1991-09-01), de Kock
patent: 5129488 (1992-07-01), Furuya et al.
patent: 5129489 (1992-07-01), Majima et al.

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