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Whirl inhibiting coast-down bearing for magnetic bearing systems

  • US 8,851,756 B2
  • Filed: 06/27/2012
  • Issued: 10/07/2014
  • Est. Priority Date: 06/29/2011
  • Status: Expired due to Fees
First Claim
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1. An apparatus for supporting a shaft during coast-down, the apparatus comprising:

  • a plurality of eccentric rings disposed around the shaft and radially-spaced therefrom to provide a running clearance between the shaft and the plurality of eccentric rings, whereinat least two of the plurality of eccentric rings each have a center vertically offset above a nominal center of the apparatus, such that the at least two of the plurality of eccentric rings provide a pocket to receive the shaft during the coast-down, andat least one of the plurality of eccentric rings is received in a groove defined in a housing, the housing receiving the shaft and the housing supporting the apparatus.

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