Vibration device, article conveyance device, and article sorting device
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United States of America Patent
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Aug 29, 2017
Grant Date -
Dec 17, 2015
app pub date -
Aug 21, 2015
filing date -
Jul 8, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The vibration device includes a base, a movable bench, a first horizontal excitation unit, a second horizontal excitation unit, and a vertical excitation unit. The vibration device includes a first middle bench and a second middle bench between the base and the movable bench. The vibration device includes first horizontal elastic support units, second horizontal elastic support units, and vertical elastic support units that elastically connect the base, the first middle bench, the second middle bench, and the movable bench sequentially in the first horizontal direction, the second horizontal direction, and the vertical direction. If overall device is supposed as a first mass body, a second mass body, and a third mass body with the first horizontal elastic support units and the second horizontal elastic support units as boundaries, respective barycentric positions of these mass bodies are almost the same in the vertical direction and horizontal direction.
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