Patents Assigned to Diethelm AG
  • Floor treating machine
    Patent number: 3931659
    Abstract: A floor treating machine supported at the floor or surface to be treated by means of a work disk arranged beneath a substantially ring-shaped stop member, the work disk being detachably coupled with a drive motor. There are provided two selectively insertable work disks of different diamter and a ring-shaped stop member is provided for each such work disk.
    Type: Grant
    Filed: June 24, 1974
    Date of Patent: January 13, 1976
    Assignee: Diethelm AG
    Inventors: Kurt Pfefferkorn, Charles Serou