Patents Assigned to Harper Buffing Machine Co.
  • Barrel-finishing apparatus
    Patent number: 4308693
    Abstract: The barrels orbit to create a centrifugal force on the barrel contents while the barrels are concurrently rotating about internal axes counter to the orbital movement, utilizing endless members to impart both the orbital and counter rotating movement to a plurality of the barrels.
    Type: Grant
    Filed: February 21, 1979
    Date of Patent: January 5, 1982
    Assignee: Harper Buffing Machine Co.
    Inventor: John F. Harper