Hydraulic damper

Details Hydraulic damper Hydraulic damper

1980-09-25

1982-07-06

Reger, Duane A.

Brakes

Internal-resistance motion retarder

Having a thrust member with a variable volume chamber

F16F 934

Patent

active

043378501

ABSTRACT:
A hydraulic damper includes a cylinder containing oil therein, a hollow piston rod one end of which projecting out of the cylinder and the other end of which extends into the cylinder, a piston provided on the inner end of the piston rod and dividing the interior of the cylinder into two oil chambers, a connecting passage including the interior of the hollow piston rod and placing the two oil chambers in communication, a rod member rotatably extending through the hollow piston rod and projecting out of the cylinder, a valve mechanism connected to the inner end of the rod member for changing the effective area of the connecting passage and having a predetermined range of rotational movement for changing the effective area of the connecting passage, an adjusting element receiving member detachably connected to the outer end of the piston rod, an adjusting element mounted on the adjusting element receiving member and being rotatable and axially displaceable relative thereto, the inner end of the adjusting element being adapted to non-rotatably engage with the outer end of the rod member, and a lock member provided between the adjusting element and the adjusting element receiving member for controlling the relative rotation therebetween.

REFERENCES:
patent: 1296835 (1919-03-01), Monsen
patent: 2347803 (1944-05-01), Allen et al.
patent: 4220228 (1980-09-01), Kato

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