Patents by Inventor Steffen Kunkel

Steffen Kunkel 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).

  • ENERGY ACCUMULATOR
    Publication number: 20110025274
    Abstract: The invention relates to an energy storage, containing at least one battery cell, and at least one Zener diode being disposed parallel to the at least one battery cell, wherein the cathode of the Zener diode is connected to the plus terminal of at least one battery cell, and the anode is connected to the minus terminal of at least one battery cell.
    Type: Application
    Filed: January 21, 2009
    Publication date: February 3, 2011
    Inventors: Steffen Kunkel, Mario Roessler, Markus Backes, Philipp Kohl Rausch
  • Actuating drive and emergency energy supply device
    Patent number: 7566981
    Abstract: An actuating drive for a rotor blade in a wind power installation is provided with an electric motor and a frequency converter which has a rectifier that is to be fed from a power supply system, a link connected to the rectifier, and a d.c.-to-a.c. inverter for feeding the motor, the link carrying a specified nominal operating voltage in a network-fed normal operation of the frequency converter. Furthermore, an auxiliary energy supply device is provided that is connected to the link. The auxiliary energy supply device includes and energy store which makes available a support voltage that amounts to less than 80% of the nominal operating voltage of the link. A diode is connected between the energy store and the link, and is arranged, with regard to its forward direction, in such a way that it feeds a support voltage from the energy store into the link if the link voltage falls below the support voltage.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: July 28, 2009
    Assignee: Bosch Rexroth AG
    Inventors: Steffen Kunkel, Karl-Günter Herrmann, Michael Hörning, Berno Kobelbauer, Jörg Dantlgraber, Stephan Becker, Gunther Neidlein, Bernd Schnurr
  • Actuating drive and emergency energy supply device
    Publication number: 20070024227
    Abstract: An actuating drive for a rotor blade in a wind power installation is provided with an electric motor and a frequency converter which has a rectifier that is to be fed from a power supply system, a link connected to the rectifier, and a d.c.-to-a.c. inverter for feeding the motor, the link carrying a specified nominal operating voltage in a network-fed normal operation of the frequency converter. Furthermore, an auxiliary energy supply device is provided that is connected to the link. The auxiliary energy supply device includes and energy store which makes available a support voltage that amounts to less than 80% of the nominal operating voltage of the link. A diode is connected between the energy store and the link, and is arranged, with regard to its forward direction, in such a way that it feeds a support voltage from the energy store into the link if the link voltage falls below the support voltage.
    Type: Application
    Filed: June 29, 2006
    Publication date: February 1, 2007
    Inventors: Steffen Kunkel, Karl-Gunter Herrmann, Michael Horning, Berno Kobelbauer, Jorg Dantlgraber, Stephan Becker, Gunther Neidlein, Bernd Schnurr