Hydraulic damper

Details Hydraulic damper Hydraulic damper

1979-01-31

1980-09-02

Halvosa, George E. A.

Brakes

Internal-resistance motion retarder

Having a thrust member with a variable volume chamber

13762532, 251209, F16F 934

Patent

active

042202280

ABSTRACT:
A hydraulic damper has a cylinder containing oil therein, a piston slidably fitted in the cylinder, a hollow piston prd extending from one side of the piston and projecting out of the cylinder, a tubular member mounted on the other side of the piston with the interior thereof communicating with the interior of the hollow piston rod, a connecting passage including the interior of the hollow piston rod and the interior of the tubular member and placing the opposite sides of the piston in communication, an actuating rod rotatably extending through the piston rod and being operable from the outside of the cylinder, and a valve body slidably received in the tubular member and connected to the actuating rod for changing the effective area of the connecting passage.

REFERENCES:
patent: 1015164 (1912-01-01), Fowden
patent: 1139162 (1915-05-01), Chapman
patent: 2347803 (1944-05-01), Allen et al.

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