Patents by Inventor Hansruedi Berger

Hansruedi Berger has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electrical discharge machine
    Patent number: 5808261
    Abstract: An electrical discharge machine with a machine is shown bed, a work tank filled with a dielectric fluid and vertically adjustable in which a work table is arranged, a generator and a control unit. All units of the machine are surrounded by a metal structure. Additional units can be integrated into the metal structure.
    Type: Grant
    Filed: May 10, 1996
    Date of Patent: September 15, 1998
    Assignee: Charmilles Technologies S.A.
    Inventors: Hansruedi Berger, Marcel Bouchoud
  • Frame member for supporting a workpiece in a machine tool
    Patent number: 5428199
    Abstract: A frame member, comprising a pair substantially parallel base members connected by a pair substantially parallel intermediate members extending therebetween, has its base members formed of the same material as the machine bed wherein the material is a cast mineral material comprising a synthetic binder and mineral fillers. It is a particular feature that the base members of the frame member be cast with the machine bed as a unitary structure out of the cast mineral material.
    Type: Grant
    Filed: August 18, 1993
    Date of Patent: June 27, 1995
    Assignee: Georg Fischer AG
    Inventors: Hansruedi Berger, Fritz Fankhauser