Patents by Inventor Helmut Fronius

Helmut Fronius 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).

  • Electromagnetically actuated, single-surface friction coupling, without a rotor slip ring
    Patent number: 6827189
    Abstract: The invention proposes an electromagnetically actuated, single-surface friction coupling without a rotor slip-ring, having a rotor element (2), a fixed magnet body (6) and a pot-shaped armature element (28) mounted so that it can be displaced axially. A cylindrical jacket shaped area (28B) of the armature element (28) extends with a narrow air gap along an outer jacket surface (12) of the magnet body (6). Between the armature element (28) and a friction surface (30) of the rotor element there is a working air gap (S) that can be bridged. To keep the moment of inertia on the drive output side as small as possible, it is proposed to arrange the rotor element (2) on the drive output side and the armature element (28) on the drive input side.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: December 7, 2004
    Assignee: ZF Friedrichshafen AG
    Inventors: Rudolf Schneider, Helmut Fronius
  • Electromagnetically actuated, single-surface friction coupling, without a rotor slip ring
    Publication number: 20040104095
    Abstract: The invention proposes an electromagnetically actuated, single-surface friction coupling without a rotor slip-ring, having a rotor element (2), a fixed magnet body (6) and a pot-shaped armature element (28) mounted so that it can be displaced axially. A cylindrical jacket shaped area (28B) of the armature element (28) extends with a narrow air gap along an outer jacket surface (12) of the magnet body (6). Between the armature element (28) and a friction surface (30) of the rotor element there is a working air gap (S) that can be bridged. To keep the moment of inertia on the drive output side as small as possible, it is proposed to arrange the rotor element (2) on the drive output side and the armature element (28) on the drive input side.
    Type: Application
    Filed: February 21, 2003
    Publication date: June 3, 2004
    Inventors: Rudolf Schneider, Helmut Fronius