Patents Assigned to PDM Consulting and Development Corp.
  • Patent number: 4137596
    Abstract: A compact portable pocket brush has retractable bristles arrayed in groups attached to a plurality of bristle group holders or supports mounted upon pivot pins in a brush case. The top wall of the case has a plurality of downwardly sloping apertures respectively located in alignment with each bristle group in the brush. The bristle group pivot pins are pivotably mounted upon a slide in the bottom of the case. When the slide is moved between two positions, each bristle group is pivoted between a retracted position in which it is enclosed within the case and an erect position wherein the bristles extend through the openings in the top wall of the case. When in the erect position all of the bristle groups are locked in a rigid vertical position by the engagement between the periphery of the holes and a portion of the bristle group holder so that the brushes can be used.
    Type: Grant
    Filed: August 2, 1976
    Date of Patent: February 6, 1979
    Assignee: PDM Consulting and Development Corp.
    Inventors: John E. Carlson, Richard W. Carlson