Seismic base isolation device for protection of equipment using roller ball transfer bearings and a reversion system comprised of tension springs or viscous dampers
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United States of America Patent
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Jan 16, 2024
Grant Date -
Sep 16, 2021
app pub date -
Dec 26, 2019
filing date -
Dec 26, 2019
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Abstract
The present invention generally relates to the making of a base isolation device to be used for the protection of non-structural items and equipment. When the base plate, which is attached to the ground, moves with the ground earthquake shakings, the isolation plate, supported by the roller ball transfer bearings, rolls over the base plate and prevents the transfer of forces to the overlying equipment. Once the ground shaking ends, the tension springs or viscous dampers pull back the isolation plate to its original position, laterally and rotationally. The height of the isolation device could be as low as 3 inches.
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