Isolation bearing restraint devices
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United States of America Patent
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Jan 1, 2013
Grant Date -
Mar 31, 2011
app pub date -
Sep 25, 2009
filing date -
Sep 25, 2009
priority date (Note) -
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Abstract
Bearing retention devices and methods for their use in isolation bearings such as seismic bearings. In preferred embodiments, the invention includes a sleeve structure assembly secured by a plurality of elastic straps to upper and lower plates or pans of a rolling ball isolation bearing. The sleeve component is structured to retain the rolling ball within the circumference or area of the bearing plates of each the upper and lower bearing portions of the bearing while permitting the ball to freely roll in any direction during a seismic event.
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