Patents by Inventor Sebastien Nicolas Hoffmann

Sebastien Nicolas Hoffmann 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: 10112600
    Abstract: Methods and systems are provided related to a self-propelling work machine in the form of a tracked vehicle having an electric drive, with a generator drivable by an internal combustion engine, an auxiliary unit connected to the engine, and a braking apparatus for braking the work machine. The braking apparatus provides regenerative braking by the electric drive and comprises a feedback apparatus for feeding back electrical motor braking power of the electric motor to the generator to apply the motor braking power on the engine and on the auxiliary unit. A controller automatically increases or decreases the electrical load of the auxiliary unit based on the electrical motor braking power fed back to the engine and/or based on an engine speed.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: October 30, 2018
    Assignee: Liebherr-Components Biberach GmbH
    Inventors: Markus Merkle, Juergen Resch, Sebastien Nicolas Hoffmann, Burkhard Emanuel Richthammer, Bernd Sommer, Stefan Duelli
  • Publication number: 20180065621
    Abstract: Methods and systems are provided related to a self-propelling work machine in the form of a tracked vehicle having an electric drive, with a generator drivable by an internal combustion engine, an auxiliary unit connected to the engine, and a braking apparatus for braking the work machine. The braking apparatus provides regenerative braking by the electric drive and comprises a feedback apparatus for feeding back electrical motor braking power of the electric motor to the generator to apply the motor braking power on the engine and on the auxiliary unit. A controller automatically increases or decreases the electrical load of the auxiliary unit based on the electrical motor braking power fed back to the engine and/or based on an engine speed.
    Type: Application
    Filed: September 18, 2017
    Publication date: March 8, 2018
    Inventors: Markus MERKLE, Juergen RESCH, Sebastien Nicolas HOFFMANN, Burkhard Emanuel RICHTHAMMER, Bernd SOMMER, Stefan DUELLI
  • Patent number: 9744872
    Abstract: The application describes a self-propelling work machine, in the form of a truck, having an electric drive comprising at least one electric motor, a generator drivable by an internal combustion engine for the power supply of the electric drive, and a braking apparatus for braking the work machine, wherein the braking apparatus provides a regenerative braking by the electric drive and a feedback apparatus for feeding back electrical motor braking power of the electric motor to the generator to apply the motor braking power on the internal combustion engine. The application further describes a method for braking the work machine. A braking control apparatus is provided for an automatic connection of a mechanical brake in dependence on the motor braking power fed back to the internal combustion engine and/or in dependence on the operating state of the internal combustion engine acted on by the fed back motor braking power.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: August 29, 2017
    Assignee: Liebherr-Components Biberach GmbH
    Inventors: Sebastien Nicolas Hoffmann, Burkhard Emanuel Richthammer, Bernd Sommer, Stefan Duelli, Markus Merkle, Juergen Resch
  • Patent number: 9718345
    Abstract: The present disclosure relates to a dump truck or to a truck, comprising a diesel electric traction drive and a cooling system, wherein two radiator fans and/or cooler blowers of the cooling system are hydraulically driven.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: August 1, 2017
    Assignee: Liebherr-Mining Equipment Colmar SAS
    Inventors: Sebastien Nicolas Hoffmann, Kai Kugelstadt, Burkhard Richthammer, Klaus Graner
  • Patent number: 9604532
    Abstract: The present disclosure relates to a mobile work machine, in particular in the form of a dump truck or truck, comprising a diesel electric traction drive and a cooling system, wherein a common cooling circuit of the liquid cooling medium is provided for the parallel cooling of one or more components of the power electronics and for the cooling of one or more drive components in the region of the driven vehicle axle.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: March 28, 2017
    Assignee: Liebherr-Mining Equipment Colmar SAS
    Inventors: Sebastien Nicolas Hoffmann, Kai Kugelstadt, Burkhard Richthammer
  • Publication number: 20160257215
    Abstract: The invention relates to a self-propelling work machine in the form of a tracked vehicle having an electric drive, with a generator drivable by an internal combustion engine, an auxiliary unit connected to the engine, and a braking apparatus for braking the work machine. The braking apparatus provides regenerative braking by the electric drive and comprises a feedback apparatus for feeding back electrical motor braking power of the electric motor to the generator to apply the motor braking power on the engine and on the auxiliary unit. The invention further relates to a method for braking the work machine. In accordance with the invention, a control apparatus is provided for the automatic increase and/or decrease of the power pick-up of the auxiliary unit in dependence on the electrical motor braking power fed back to the engine and/or on the operating state of the engine acted on by motor braking power.
    Type: Application
    Filed: September 9, 2014
    Publication date: September 8, 2016
    Inventors: Markus MERKLE, Juergen RESCH, Sebastien Nicolas HOFFMANN, Burkhard Emanuel RICHTHAMMER, Bernd SOMMER, Stefan DUELLI
  • Publication number: 20160229295
    Abstract: The present invention describes a self-propelling work machine in the form of a truck, having an electric drive comprising at least one electric motor, a generator drivable by an internal combustion engine for the power supply of the electric drive, and a braking apparatus for braking the work machine, wherein the braking apparatus provides a regenerative braking by the electric drive and a feedback apparatus for feeding back electrical motor braking power of the electric motor to the generator to apply the motor braking power on the internal combustion engine. The invention further describes a method for braking the work machine. A braking control apparatus is provided for an automatic connection of a mechanical brake in dependence on the motor braking power fed back to the internal combustion engine and/or in dependence on the operating state of the internal combustion engine acted on by the fed back motor braking power.
    Type: Application
    Filed: September 9, 2014
    Publication date: August 11, 2016
    Applicant: Liebherr-Components Biberach GMBH
    Inventors: Sebastien Nicolas HOFFMANN, Burkhard Emanuel RICHTHAMMER, Bernd SOMMER, Stefan DUELLI, Markus MERKLE, Juergen RESCH
  • Publication number: 20150352944
    Abstract: The present disclosure relates to a dump truck or to a truck, comprising a diesel electric traction drive and a cooling system, wherein two radiator fans and/or cooler blowers of the cooling system are hydraulically driven.
    Type: Application
    Filed: June 4, 2015
    Publication date: December 10, 2015
    Inventors: Sebastien Nicolas Hoffmann, Kai Kugelstadt, Burkhard Richthammer, Klaus Graner
  • Publication number: 20150352943
    Abstract: The present disclosure relates to a mobile work machine, in particular in the form of a dump truck or truck, comprising a diesel electric traction drive and a cooling system, wherein a common cooling circuit of the liquid cooling medium is provided for the parallel cooling of one or more components of the power electronics and for the cooling of one or more drive components in the region of the driven vehicle axle.
    Type: Application
    Filed: June 4, 2015
    Publication date: December 10, 2015
    Inventors: Sebastien Nicolas Hoffmann, Kai Kugelstadt, Burkhard Richthammer