Hydraulic damper

Details Hydraulic damper Hydraulic damper

1984-05-18

1986-06-24

Stoner, Jr., Bruce H.

Brakes

Internal-resistance motion retarder

Controlled by an operator remote from retarder

188319, F16F 946

Patent

active

045963207

ABSTRACT:
A hydraulic damper includes a cylinder containing hydraulic fluid therein, a piston working in the cylinder and partitioning the interior thereof into two liquid chambers, a piston rod connected to the piston and extending through one of the liquid chambers to project to the outside of the cylinder, and disc valves provided on opposite sides of the piston for generating damping force both in the extension and contraction strokes of the damper. A liquid passage is formed in the piston rod to communicate the two liquid chambers separately from the disc valves. An adjusting member is provided in the liquid passage and is displaceable between three or more adjusting positions for changing the effective area thereof. A digital encoder connected to the adjusting member for detecting the adjusting positions. The digital encoder includes a common electric line which ON-OFF controls at least two other electric lines when the other two lines generate the same digital signals.

REFERENCES:
patent: 3206117 (1965-09-01), Anderson et al.
patent: 4313529 (1982-02-01), Kato et al.
patent: 4463839 (1984-08-01), Ashiba
patent: 4527676 (1985-07-01), Emura et al.

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