Oscillation damper

Details Oscillation damper Oscillation damper

1989-04-17

1990-10-09

Halvosa, George E. A.

Brakes

Internal-resistance motion retarder

Relative speed of thrust member or fluid flow

137517, 137854, 188282, 188317, 18832215, F16F 9348

Patent

active

049614827

ABSTRACT:
In an illustrative example, an oscillation damper for damping the steering movement of the handle bar of a motorcycle comprises a cylinder and a piston rod axially movable with respect to the cylinder. A damping piston is provided at the inner end of the piston rod and divides the cavity within the cylinder into two working chambers. These working chambers are interconnected by at least one axial bore through the piston. Valve discs are provided on both axial end faces of the piston. These valve discs are fixed to the piston in their respective central areas. Circumferential areas of the valve discs define circumferential gaps with the respective end faces. In response to the velocity of axial relative movement of the piston rod with respect to the cylinder the circumferential areas of respective valve discs are approached to the respective end faces. So the damping resistance is increased.

REFERENCES:
patent: 1748531 (1930-02-01), Troup
patent: 2310570 (1943-02-01), Briggs
patent: 2622792 (1952-12-01), Ramelow
patent: 3074515 (1963-01-01), MacLellan

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