Vibration damper

Details Vibration damper Vibration damper

1992-11-23

1993-08-17

Butler, Douglas C.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

188267, 188378, 267136, 248550, F16F 1503

Patent

active

052361861

ABSTRACT:
A vibration damper comprising a magnet having a mass m and an elasticity c.sub.1, and a spring element of flexibly compliant material having an elasticity c.sub.2, wherein the magnet is mounted on the spring element so that the resiliency c.sub.1 of the magnet and the resiliency c.sub.2 of the spring element form an combined elasticity c.sub.tot of the vibration damper. The vibration damper is attached to a plate of magnetizable material which exhibits an interference frequency .omega..sub.1 and is attracted to the magnet. The magnet is movable relative to said plate in every operating position. The mass m and elasticity c.sub.1 of the magnet and the elasticity c.sub.2 of the spring element are adjusted to achieve a natural frequency .omega..sub.0 on the basis of the formula: ##EQU1## so as to allow the resulting natural frequency .omega..sub.0 to be adjusted in accordance with the interference frequency .omega..sub.1 of the plate.

REFERENCES:
patent: 4432441 (1984-02-01), Kurokawa
patent: 4699348 (1987-10-01), Freudenberg
patent: 4773632 (1988-09-01), Hartel
patent: 4789142 (1988-12-01), Hoying et al.
patent: 5042786 (1991-08-01), Freudenberg et al.

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