Patents by Inventor Walter Sohner

Walter Sohner 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).

  • Rotor of a turbogenerator
    Patent number: 6744167
    Abstract: The invention relates to a rotor (1) for a turbogenerator having a field winding (4) which is formed from hollow conductors (3), having a damper bar (8), having insulation (9) arranged between the damper bar and the field winding, having a wedge (15) and having a gas outlet zone (5) which is located in the central rotor region. In order to reduce the distance between the field winding and the wedge, provision is made for the damper bar to be interrupted and to be replaced by an insulating piece (10) in the gas outlet zone (5), and for the damper bar parts (8) to be electrically conductively bridged by the wedge (15).
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: June 1, 2004
    Assignee: Alstom (Switzerland) Ltd
    Inventor: Walter Söhner
  • Rotor of a turbogenerator
    Publication number: 20020190597
    Abstract: The invention relates to a rotor (1) for a turbogenerator having a field winding (4) which is formed from hollow conductors (3), having a damper bar (8), having insulation (9) arranged between the damper bar and the field winding, having a wedge (15) and having a gas outlet zone (5) which is located in the central rotor region. In order to reduce the distance between the field winding and the wedge, provision is made for the damper bar to be interrupted and to be replaced by an insulating piece (10) in the gas outlet zone (5), and for the damper bar parts (8) to be electrically conductively bridged by the wedge (15).
    Type: Application
    Filed: April 22, 2002
    Publication date: December 19, 2002
    Inventor: Walter Sohner
  • Power supply unit, more specifically battery charger for electric vehicles and the like
    Patent number: 5717579
    Abstract: A clocked current supply apparatus for connection to the network with one or several cables has at least one input rectifier, at least one regulator for generating a sequence of current pulses, at least one adapter network for separately transmitting potential and current pulses and a pair of output terminals for each adapter network to which a voltage-controlling element (accumulator, capacitor) is connected. The adapter network (AN) consists of an adapter transformer (TR) and several blocking diodes (DL,DE) that connect the output terminals (KA+, KA-) to the secondary winding system of the adapter transformer (TR). In addition, a regulator that consists of at least one choking coil (L), at least one pair of electronic switches (ES1,ES2) driven by a controller (STG) and one voltage limiter (BGU) is arranged between the rectifier (GR) and the adapter network (AN).
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: February 10, 1998
    Inventor: Walter Sohner