Dynamic damper and method for detecting malfunction of dynamic d

Details Dynamic damper and method for detecting malfunction of dynamic d Dynamic damper and method for detecting malfunction of dynamic d

1990-10-01

1992-12-08

Graham, Matthew C.

Brakes

Inertia of damping mass dissipates motion

52167R, 52346, 248560, F16F 700

Patent

active

051689677

ABSTRACT:
Disclosed is a dynamic damper which is to absorb building vibrations in any horizontal directions, not restricted to one direction. For example, it comprises an oscillating body which is held to move horizontally, a plurality of ball screws which are arranged perpendicularly to each other with a height difference among them and which have a nut portion on the side of the oscillating body and a screw shaft engaging with said nut portion, and motors which reciprocate the oscillating body according to the period of vibration of the building by turning the ball screws.

REFERENCES:
patent: 4483425 (1984-11-01), Newman

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