Patents by Inventor Hermann Lehnertz

Hermann Lehnertz 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: 6667532
    Abstract: The invention concerns a semiconductor power element (diode 18) having a lead (11) and a safety fuse (12) situated in the main current path that blows when overheated, particularly for use in the electrical system of motor vehicles. In order to achieve a previously determined, purposeful disconnection of the endangered element in order to avoid consequential damages when semiconductor power elements become overloaded, it is proposed that a segment (11b) of the lead (11) and/or its points of contact in the main current path of the semiconductor be designed as a safety fuse (12) that blows when a specified, current-dependent temperature value is reached.
    Type: Grant
    Filed: January 24, 2002
    Date of Patent: December 23, 2003
    Assignee: Robert Bosch GmbH
    Inventors: Martin Haupt, Herbert Labitzke, Walter Csiscer, Klaus-Uwe Mittelstaedt, Hans-Heinrich Winkel, Holger Scholzen, Karl-Otto Heinz, Holger Haussmann, Henning Stilke, Hermann Lehnertz
  • Publication number: 20020167772
    Abstract: The invention concerns a bridge rectifier for rotary current generators, in particular for supplying the electrical system of motor vehicles. It comprises rectifier diodes and a printed circuit board comprising an insulator (23) basically designed in the shape of a plate, in which multiple connection conductors (24) are embedded between the diodes of the rectifier bridges, whereby sections of these connection conductors are designed to be bent extending out of the insulator and as fuses (25) that melt in case of electrical overload. In order to achieve the smallest possible tolerances for operation of the fuses, each of the fuses (25) is formed out of two conductor ends (24a)-bent to the outside-of the connection conductors (24) and a fuse element (29) connected with them that bridges the conductor ends.
    Type: Application
    Filed: January 2, 2002
    Publication date: November 14, 2002
    Inventors: Martin Haupt, Herbert Labitzke, Walter Csicser, Klaus-Uwe Mittelstaedt, Holger Scholzen, Karl-Otto Heinz, Holger Haussmann, Henning Stilke, Hermann Lehnertz
  • Publication number: 20020158304
    Abstract: The invention concerns a semiconductor power element (diode 18) having a lead (11) and a safety fuse (12) situated in the main current path that blows when overheated, particularly for use in the electrical system of motor vehicles. In order to achieve a previously determined, purposeful disconnection of the endangered element in order to avoid consequential damages when semiconductor power elements become overloaded, it is proposed that a segment (11b) of the lead (11) and/or its points of contact in the main current path of the semiconductor be designed as a safety fuse (12) that blows when a specified, current-dependent temperature value is reached.
    Type: Application
    Filed: January 24, 2002
    Publication date: October 31, 2002
    Inventors: Martin Haupt, Herbert Labitzke, Walter Csiscer, Klaus-Uwe Mittelstaedt, Hans-Heinrich Winkel, Holger Scholzen, Karl-Otto Heinz, Holger Haussmann, Henning Stilke, Hermann Lehnertz
  • Publication number: 20020137569
    Abstract: A coupling arrangement for transmitting a torque is comprised of a drive shaft (1), a driven shaft (5), a damping element (16), which is associated with one of the shafts (1, 5) and is for compensating for an axial offset between the two shafts (1, 5), and a radial tensioning element (4), which is associated with the other shaft (1) and, with the damping element (16), is for introducing a definite force (K) that acts radially on the driven shaft (5).
    Type: Application
    Filed: May 10, 2002
    Publication date: September 26, 2002
    Inventors: Hans-Heinrich Winkel, Hermann Lehnertz
  • Patent number: 5735762
    Abstract: A pulley, in particular a free-running pulley, comprises a pulley body having an throughgoing opening for mounting on a shaft end of a machine and provided with an inner thread cooperating with a counter-thread of the shaft end. The throughgoing opening has a portion which is arranged forwardly of the inner thread and being provided on its periphery with a contour repeating at regular distances from one another and adapted for a form-locking engagement of a tool for tightening or loosening the pulley body on the shaft.
    Type: Grant
    Filed: March 8, 1996
    Date of Patent: April 7, 1998
    Assignee: Robert Bosch GmbH
    Inventors: Henning Fasterding, Hermann Lehnertz, Oswald Antl
  • Patent number: 5324237
    Abstract: A belt drive of an electrical machine has a belt pulley arranged on a driving end of a machine shaft, a coupling connecting the drive pulley with the machine shaft, the coupling having at least one elastic coupling part provided between a driving side and a driven side of the coupling, a mounting part having a bearing pin and mountable on a machine aggregate which is connected with the electrical machine, a drive belt connecting the mounting part with the machine aggregate, and an inner bearing. The belt pulley in order to take up belt pull forces, is mounted through the inner bearing on the bearing pin of the mounting part which is mountable on the machine aggregate through the drive belt.
    Type: Grant
    Filed: December 24, 1992
    Date of Patent: June 28, 1994
    Assignee: Robert Bosch GmbH
    Inventors: Thomas Bilsing, Johann Kunz, Hermann Lehnertz, Hans-Joachim Lutz, Johann Koeppel, Martin Leins