Seismic isolation apparatus
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United States of America Patent
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Apr 14, 2020
Grant Date -
Apr 25, 2019
app pub date -
Apr 12, 2017
filing date -
Apr 19, 2016
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Abstract
A seismic isolation apparatus 1 includes a laminated body 7 having alternately laminated a plurality of elastic layers 2 and rigid layers 3, and a lead plug 17 being disposed therein without clearances in a hollow portion 14 extending in a laminated direction V of the laminated body 7 with respect to inner peripheral surfaces 15 of the elastic layers 2, inner peripheral surfaces 16 of the rigid layers 3, a lower surface 12 of an upper plate 10, and an upper surface 13 of a lower plate 11.
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