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Self-aligning sealing assembly for a rotating shaft

  • US 6,145,844 A
  • Filed: 05/13/1998
  • Issued: 11/14/2000
  • Est. Priority Date: 05/13/1998
  • Status: Expired due to Term
First Claim
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1. A sealing structure for a shaft, the shaft extending along and rotating about a central axis, a stationary member having an inner surface which is spaced from and surrounds the shaft, and a slot located in and extending around the inner surface of the member, the slot having an outer surface, an upstream surface, and a downstream surface, the structure comprising:

  • a sealing apparatus being disposed in the slot, the sealing apparatus having an inner surface, an outer surface, an upstream surface and a downstream surface;

    a space between the outer surface of the sealing apparatus and the outer surface of the slot to accommodate radial movement of the sealing apparatus, the space extending all around the outer surface of the sealing apparatus; and

    one or more preloading devices, each of the preloading devices applying a force in a substantially axial direction between the upstream surface and the downstream surface of the slot to support the weight of the sealing apparatus.

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