Patents Represented by Attorney Alan Oppenhezmer Wolff & Donnelly LLP Kamrath
  • Patent number: 5974626
    Abstract: A dust collection/control system is disclosed utilized in a floor polishing machine (10) in the most preferred form. A polishing member (16) for maintaining a floor surface as it is moved along the floor is located and rotated within a housing or shield (186) including a circular, planar portion (92) terminating at its periphery in a downwardly extending flange (94) including a flexible skirt (95) which engages the floor. The rotation of the polishing member (16) within the housing (186) passively generates an air current contained within the housing (186).
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: November 2, 1999
    Assignee: Nilfisk-Advance, Inc.
    Inventors: David Wood, William F. Allen