Patents Assigned to Horst Witte Entwicklungs-und Vertriebs KB
  • Patent number: 4934670
    Abstract: The magnetic chuck for chucking or raising workpieces has differently poled (S and N) magnetic pole pieces (1), between which is located a pole pitch (2) of non-ferromagnetic material. In order to make the magnetic chuck more universally usable for workpieces made from non-magnetizable or weakly magnetizable material, it is additionally constructed as a vacuum chuck. This is brought about by correspondingly differently designed bores or slots, which are preferably filled with sintered metal and by means of which the vacuum is applied through corresponding vacuum lines. Due to the fact that the magnetic force and/or the force applied by the vacuum is available as a retaining or holding force, a universal use of the same tool is possible and simultaneously a considerable holding force can be applied.
    Type: Grant
    Filed: August 14, 1989
    Date of Patent: June 19, 1990
    Assignee: Horst Witte Entwicklungs-und Vertriebs KB
    Inventor: Horst Witte