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Dual stiffness bearing damping system

  • US 6,747,378 B2
  • Filed: 08/20/2001
  • Issued: 06/08/2004
  • Est. Priority Date: 08/20/2001
  • Status: Expired due to Term
First Claim
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1. A damping system for an evacuated energy storage device, said device having a rotor assembly that is rotatably supported and guided by a bearing assembly, comprising a rolling element substantially confined between an inner and an outer race, and a stator assembly, the system comprising:

  • one or more flexible dampers, each having a first stiffness; and

    a plurality of rigid bumpers, each of said plurality of rigid bumpers having a second stiffness, wherein said second stiffness is greater than said first stiffness, and wherein said bumpers frictionally engage the outer race during extreme loading.

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