Piston-cylinder type oil damper

Details Piston-cylinder type oil damper Piston-cylinder type oil damper

1987-06-23

1988-12-27

Reger, Duane A.

Brakes

Internal-resistance motion retarder

Having a thrust member with a variable volume chamber

18832215, F16F 9342

Patent

active

047934522

ABSTRACT:
A piston-cylinder type oil damper includes a cylinder containing oil, a piston inserted within the cylinder for dividing the interior of the cylinder into a head chamber and a rod chamber, a rod passing through the rod chamber and projecting out of a rod end of the cylinder, a cover slidably penetrated by the rod and closing the rod end, and a floating piston inserted within the head or rod chamber so as to form an air chamber. The piston is provided with axial through-holes for causing the oil within the head and rod chambers to flow therethrough in opposite directions. The rod is provided with an axially movable valve plate brought into contact with one side of the piston for partially shielding the through-holes.

REFERENCES:
patent: 2397640 (1946-04-01), Bingham
patent: 3865356 (1975-02-01), Wossner
patent: 4433759 (1984-02-01), Ichinose
patent: 4632228 (1986-12-01), Oster et al.

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