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Brush seal

  • US 6,416,057 B1
  • Filed: 04/14/2000
  • Issued: 07/09/2002
  • Est. Priority Date: 04/16/1999
  • Status: Expired due to Term
First Claim
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1. A brush seal arrangement for sealing cooperation between a shaft and a surrounding member which is relatively rotatable with respect to the shaft, said brush seal comprising an annular rotor disposed in surrounding relationship to the shaft and being sealed with respect to the housing, the rotor mounting thereon first and second annular brush members which are disposed in axially spaced relation and which have annular edge portions which create a frictional and sealing engagement with the shaft to nonrotatably and sealingly couple the rotor to the shaft, a passage extending through the rotor for communication with an annular region defined between the annular brush members in surrounding relationship to the shaft, and a pressurized buffer gas supplied through the passage into the annular region.

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