Dynamic vibration absorber
AssigneeNippon Kokan Kabushiki Kaisha
InventorsKiyoshi Kondo, Kiyotaka Uno, Fukuhiko Kataoka, Kozo Asano
Life of this patent
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Abstract
A vibration damping arrangement for a structural member including leaf springs extending horizontally from a vibration absorber body adapted to be attached to the structural member. A set of horizontal-vibration-absorbing leaf springs extends in one horizontal plane while a set of vertical-vibration-absorbing leaf springs extends in another horizontal plane. A weight is mounted on the distal end of each leaf spring. The relative positions of the leaf springs in their respective planes are staggered around a vertical axis.
Claims13
A dynamic vibration absorber adapted to absorb vibration of a structural member, comprising:
- a vertically extending vibration absorber body having a vertical axis and adapted to be mounted to said structural member;
- a plurality of horizontal-vibration absorber units coupled respectively to said vibration absorber body at equal intervals around the vertical axis and extending substantially horizontally therefrom at substantially the same first vertical height, wherein each of the horizontal-vibration-absorber units is elongated with one end being connected to the vibration absorber body and the other end being free;
- a plurality of vertical-vibration-absorber units of the same number as said plurality of horizontal-vibration-absorber units coupled respectively to said vibration absorber body at equal intervals around the vertical axis and extending substantially horizontally therefrom at substantially the same second vertical height different from the first vertical height;
- and
- said horizontal-vibration-absorber units being respectively arranged around the vertical axis to extend therefrom so as to be staggered with respect to the vertical-vibration-absorber units.
Dependencies are inferred from the claim text.