Vacuum brush

  • US 10,314,449 B2
  • Filed: 07/08/2014
  • Issued: 06/11/2019
  • Est. Priority Date: 02/16/2010
  • Status: Active Grant
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First Claim
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1. A cleaning element comprising:

  • a central member defining a longitudinal axis and having a drive end portion, a bearing end portion, and a brush cage disposed between the drive end portion and the bearing end portion, the bearing end portion comprising;

    a cylindrical sleeve; and

    a circular flange extending radially outwardly relative to the sleeve; and

    a shroud surrounding at least a portion of the bearing end portion, the shroud comprising walls arranged to define an interior space of the shroud;

    wherein;

    the shroud and the circular flange define a reservoir in the interior space of the shroud;

    the bearing end defines a labyrinth passage between the drive end portion and the reservoir at an outer diameter of the circular flange;

    the sleeve is a separate constructional element from the circular flange;

    the sleeve is mounted on the circular flange;

    the cleaning element includes a bearing located in the shroud;

    the central member includes a shaft mounted in the bearing to allow rotation between the shaft and the shroud;

    the sleeve is interposed between the reservoir and the bearing; and

    the sleeve is mounted on the shaft for rotation with the shaft relative to the shroud.

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