Patents by Inventor Hans Knapp

Hans Knapp 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).

  • Publication number: 20230340968
    Abstract: The present invention relates to a switching valve block for a hydraulically actuable work machine that comprises a plurality of valve block inputs for a respective connection to a pressure output of one or more hydraulic fluid pumps, a plurality of valve block outputs for outputting a pressurized hydraulic fluid, and at least one valve that is arranged between valve block inputs and valve block outputs and is adapted to selectively produce a fluid connection between a first valve block input and a first valve block output or between a first valve block input and a second valve block output. The invention is characterized in that the first valve block output furthermore already has a fixed fluid connection to a second valve block input.
    Type: Application
    Filed: December 3, 2020
    Publication date: October 26, 2023
    Inventors: Rupert GAPPMAIER, Florian ALTENBERGER, Hans KNAPP, Josef STOCK, Alexis DOLE, Callan MACKAY
  • Publication number: 20230323633
    Abstract: The present invention relates to a work machine having a fuel cell drive comprising a fuel cell and determination means for determining the load demand of the fuel cell, wherein the work machine has a plurality of electrical consumers that are directly or indirectly connected to the fuel cell for the purpose of obtaining electrical energy, wherein the determination means are configured such that the power requirements of at least two of the electrical consumers enter into the determination of the load demand of the fuel cell.
    Type: Application
    Filed: February 9, 2023
    Publication date: October 12, 2023
    Inventors: Marco EDER, Dominik ECKER, Rupert GAPPMAIER, Christoph KIEGERL, Hans KNAPP, Leke UKIMERAJ
  • Publication number: 20230241966
    Abstract: The present invention relates to a machine, in particular wheel loader, with a cabin for the operator of the machine and with an engine compartment arranged behind the cabin, wherein the machine has a drive, which is operable using hydrogen or using energy obtained from hydrogen and wherein one or more tanks are present for receiving hydrogen, wherein the tank or tanks is/are arranged between the cabin and the rear of the machine in a hydrogen fuel system.
    Type: Application
    Filed: January 18, 2023
    Publication date: August 3, 2023
    Inventors: Reinhard DENGG, Gerald HEUGENHAUSER, Hans KNAPP
  • Publication number: 20230167624
    Abstract: The present invention relates to a work machine, in particular a wheeled loader, having a cabin for the operator of the work machine and having an engine room arranged behind the cabin, wherein the work machine has a drive that is operable with hydrogen; and in that one or more tanks for the reception of hydrogen are present, with the tank or tanks being arranged in a hydrogen fuel system behind the cabin and above the engine room.
    Type: Application
    Filed: October 31, 2022
    Publication date: June 1, 2023
    Inventors: Hans KNAPP, Gerald HEUGENHAUSER, Reinhard DENGG, David SAGORZ
  • Publication number: 20230059952
    Abstract: The present invention relates to a work machine, in particular a wheeled loader, having an electric motor and having oil cooling that is suitable and intended to cool the electric motor and having a driving axle that has an oil reservoir, wherein a feed line from said oil reservoir to the electric motor and a discharge line from the electric motor to said oil reservoir are present and a pump is present to pump oil from the oil reservoir to the electric motor so that the electric motor is cooled by means of oil from the oil reservoir of the driving axle.
    Type: Application
    Filed: August 17, 2022
    Publication date: February 23, 2023
    Applicant: Liebherr-Werk Bischofshofen GmbH
    Inventors: Hans KNAPP, Hendrik RICHTER, Christoph KIEGERL, Reinhard WINDHOFER, Johannes HOFBAUER
  • Publication number: 20230059902
    Abstract: A work machine, more particularly a wheeled loader, having a cab for the operator of the work machine, wherein the work machine has a drive which can be operated with hydrogen and that one or more tanks for receiving hydrogen are provided, wherein components for receiving the tanks are provided, wherein the tank or tanks are arranged below the cab and, when the work machine is viewed from above, next to the cab of the work machine, wherein the components for receiving the tanks do not have a direct mechanical connection to the cab, and that an armor is provided which partially or completely surrounds the tank.
    Type: Application
    Filed: August 19, 2022
    Publication date: February 23, 2023
    Inventors: Hans KNAPP, Gerald HEUGENHAUSER, Christoph KIEGERL, Reinhard DENGG, David SAGORZ
  • Publication number: 20220251804
    Abstract: The present invention relates to a mobile work machine, in particular to a wheeled loader, having a hydraulic circuit, having a pump for conveying a hydraulic medium through the hydraulic circuit, and having at least one control block having an inflow control edge and an outflow control edge for controlling the flow of the hydraulic medium, wherein the work machine has a working tool and a cylinder for actuating the working tool and wherein the cylinder has an outflow and in inflow for the hydraulic medium, and wherein the outflow is in fluid communication with the outflow control edge and the inflow is in fluid communication with the inflow control edge, and wherein the inflow control edge does not have any or has fewer fine control notches than the outflow control edge and thus works in a largely unrestricted manner, while the outflow control edge is equipped with one or more fine control notches so that with a pulling load at the working tool, the outflow control edge restricts the outflow amount through t
    Type: Application
    Filed: June 25, 2020
    Publication date: August 11, 2022
    Inventors: Hans KNAPP, Josef STOCK, Rupert GAPPMAIER, Christoph KIEGERL, Reinhard WINDHOFER, Florian ALTENBERGER
  • Patent number: 10942539
    Abstract: The invention relates to a system for controlling a work machine, in particular a wheel loader, having at least one hand-held control device (6), in particular a joystick or steering wheel, at least one restoring device (8) in the form of one or more spring assemblies, which are connected to the hand-held control device in such a way a restoring force is exerted upon the hand-held control device by the spring assembly when said spring assembly is not in the central position. An adjusting device (9, 12, 13) which engages with the spring assembly such that an adjustment of the central position of the spring assembly can be carried out, is provided.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: March 9, 2021
    Assignee: LIEBHERR-WERK BISCHOFSHOFEN GMBH
    Inventors: Mario Hettegger, Manuel Bos, Hans Knapp, Christoph Kiegerl
  • Publication number: 20190187742
    Abstract: The invention relates to a system for controlling a work machine, in particular a wheel loader, having at least one hand-held control device (6), in particular a joystick or steering wheel, at least one restoring device (8) in the form of one or more spring assemblies, which are connected to the hand-held control device in such a way a restoring force is exerted upon the hand-held control device by the spring assembly when said spring assembly is not in the central position. An adjusting device (9, 12, 13) which engages with the spring assembly such that an adjustment of the central position of the spring assembly can be carried out, is provided.
    Type: Application
    Filed: May 11, 2017
    Publication date: June 20, 2019
    Applicant: LIEBHERR-WERK BISCHOFSHOFEN GMBH
    Inventors: Mario HETTEGGER, Manuel BOS, Hans KNAPP, Christoph KIEGERL
  • Patent number: 8479869
    Abstract: This invention relates to a machine, in particular a construction machine and preferably a wheel loader or dumper, comprising a pump, an energy accumulator connected with the pump, which includes a first space which is gas-filled and which includes a second space which is designed such that in operation of the pump it is filled by a fluid delivered by means of the pump, wherein the gas contained in the first space is compressed, and comprising a hydraulic motor to be driven by means of the energy accumulator, wherein the energy accumulator is designed such that the ratio of the volume of the first space with fully loaded second space to the volume of the first space with non-loaded second space is >0.5.
    Type: Grant
    Filed: May 17, 2007
    Date of Patent: July 9, 2013
    Assignee: Liebherr-Werk Bischofshofen Ges. m.b.H.
    Inventor: Hans Knapp
  • Publication number: 20070278030
    Abstract: This invention relates to a machine, in particular a construction machine and preferably a wheel loader or dumper, comprising a pump, an energy accumulator connected with the pump, which includes a first space which is gas-filled and which includes a second space which is designed such that in operation of the pump it is filled by a fluid delivered by means of the pump, wherein the gas contained in the first space is compressed, and comprising a hydraulic motor to be driven by means of the energy accumulator, wherein the energy accumulator is designed such that the ratio of the volume of the first space with fully loaded second space to the volume of the first space with non-loaded second space is>0.5.
    Type: Application
    Filed: May 17, 2007
    Publication date: December 6, 2007
    Inventor: Hans Knapp
  • Publication number: 20070187167
    Abstract: This present disclosure relates to a machine, in particular a construction machine and preferably a wheel loader, comprising a drive unit, a drive train connected with the drive unit for driving the machine, a pump, an energy store connected with the pump, which can be charged by the pump, and an engine which is connected with the energy store and with the drive train or some other component of the machine, wherein the engine is connected with the energy store such that the engine can be driven by the energy store, and wherein the engine is connected with the drive train or the other component such that the energy output by the engine can be introduced into the drive train or into the other component.
    Type: Application
    Filed: January 12, 2007
    Publication date: August 16, 2007
    Inventors: Oliver Mariani, Heinrich Hochleitner, Hans Knapp, Markus Huber