Patents by Inventor Norbert Pfitzke

Norbert Pfitzke 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).

  • Patent number: 8723386
    Abstract: The invention relates to an electrical machine, especially an alternator (10) comprising a stator winding (11) with a total of seven phase conductors (P1 to P7) which are interconnected in series at the same electrical angle (a). The aim of the invention is to dampen magnet noise and to increase machine performance. For this purpose, at least every other electrically subsequent phase conductor (P) is skipped when the phase conductors (P1 to P7) are connected in series.
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: May 13, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Gerd Wolf, Norbert Pfitzke
  • Patent number: 8531074
    Abstract: An electric machine, in particular an electrically excited claw pole generator for a motor vehicle, is provided, having a stator winding, the phase terminals of which may be connected in the manner of a pentagram to a rectifier system. The stator winding has a five-phase design, phase terminals situated in adjacent slots being interconnected at least once. All of the phase terminals may be interconnected are situated in adjacent slots.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: September 10, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Gert Wolf, Norbert Pfitzke
  • Patent number: 8368276
    Abstract: A polyphase electrical machine, in particular, a polyphase generator, includes a stator which features a core body having a circumferential slot pitch, and a winding configuration having a plurality of windings. It is provided that each winding and each slot of the group of slots that extends over one pole pitch is assigned to one of the phases, and the windings have winding sections that lie in assigned slots and between which, in each case, a winding-head connection is formed, the winding-head connections of different windings being disposed radially in layers relative to each other, and the number of phases being five. A method for producing a polyphase electrical machine is also provided.
    Type: Grant
    Filed: January 29, 2008
    Date of Patent: February 5, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Gert Wolf, Norbert Pfitzke, Thomas Berger, Eberhard Rau, Alexander Shendi
  • Patent number: 7989996
    Abstract: The invention relates to a five-phase electric generator (1), in particular for a motor vehicle, said generator comprising five electric branches (12) for five different phases, the latter being electrically connected at interconnection points (14). The electric angle (?) ranges between 25° and 36° at said interconnection points (14).
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: August 2, 2011
    Assignee: Robert Bosch GmbH
    Inventors: Gert Wolf, Norbert Pfitzke
  • Publication number: 20100283349
    Abstract: A polyphase electrical machine, in particular, a polyphase generator, includes a stator which features a core body having a circumferential slot pitch, and a winding configuration having a plurality of windings. It is provided that each winding and each slot of the group of slots that extends over one pole pitch is assigned to one of the phases, and the windings have winding sections that lie in assigned slots and between which, in each case, a winding-head connection is formed, the winding-head connections of different windings being disposed radially in layers relative to each other, and the number of phases being five. A method for producing a polyphase electrical machine is also provided.
    Type: Application
    Filed: January 29, 2008
    Publication date: November 11, 2010
    Inventors: Gert Wolf, Norbert Pfitzke, Thomas Berger, Eberhard Rau, Alexander Shendi
  • Publication number: 20100066194
    Abstract: An electric machine, in particular an electrically excited claw pole generator for a motor vehicle, is provided, having a stator winding, the phase terminals of which may be connected in the manner of a pentagram to a rectifier system. The stator winding has a five-phase design, phase terminals situated in adjacent slots being interconnected at least once. All of the phase terminals may be interconnected are situated in adjacent slots.
    Type: Application
    Filed: October 10, 2007
    Publication date: March 18, 2010
    Applicant: Robert Bosch GmbH
    Inventors: Gert Wolf, Norbert Pfitzke
  • Publication number: 20090001840
    Abstract: The invention relates to an electrical machine, especially an alternator (10) comprising a stator winding (11) with a total of seven phase conductors (P1 to P7) which are interconnected in series at the same electrical angle (a). The aim of the invention is to dampen magnet noise and to increase machine performance. For this purpose, at least every other electrically subsequent phase conductor (P) is skipped when the phase conductors (P1 to P7) are connected in series.
    Type: Application
    Filed: December 27, 2006
    Publication date: January 1, 2009
    Inventors: Gert Wolf, Norbert Pfitzke
  • Publication number: 20070296289
    Abstract: The invention relates to a five-phase electric generator (1), in particular for a motor vehicle, said generator comprising five electric branches (12) for five different phases, the latter being electrically connected at interconnection points (14). The electric angle (?) ranges between 25° and 36° at said interconnection points (14).
    Type: Application
    Filed: May 22, 2006
    Publication date: December 27, 2007
    Inventors: Gert Wolf, Norbert Pfitzke