Bearing assemblies including tilting bearing elements and superhard sliding bearing elements, bearing assemblies including a substantially continuous bearing element and superhard sliding bearing elements, and related bearing apparatuses and methods
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United States of America Patent
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Jan 30, 2018
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app pub date -
Jul 18, 2017
filing date -
Feb 25, 2015
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Abstract
Bearing assemblies and bearing apparatuses are disclosed. In an embodiment, a first bearing assembly includes tilting pads and a first plurality of sliding superhard bearing elements secured to a first support ring. In an embodiment, a second bearing assembly includes a substantially continuous bearing element secured to a second support ring. In an embodiment, a bearing apparatus includes the first bearing assembly and the second bearing assembly, with the substantially continuous bearing element generally facing the tilting pads. At relatively low rotational speeds, the first plurality of superhard bearing elements supports at least a portion of a load exerted on the bearing assembly. At relatively high rotational speeds, the tilting pads support at least a majority of the load.
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