Patents Assigned to Harbert S. Gregory
  • Toothbrush bristle clamp
    Patent number: 5042107
    Abstract: A toothbrush holder for training the bristles of a toothbrush into a preferred shape utilizes a pair of opposed cam surfaces to urge a pair of rigid compression members against the sides of the mass of bristles along a line at a predetermined height on the bristles. The resultant bristle structure is maintained by repeated storage of the brush in the holder between use.
    Type: Grant
    Filed: November 6, 1989
    Date of Patent: August 27, 1991
    Assignee: Harbert S. Gregory
    Inventors: Harbert S. Gregory, Sheldon P. Schmidt