Patents by Inventor Hauke Karstens

Hauke Karstens 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: 11333242
    Abstract: A piston-cylinder assembly (1) has a cylindrical housing (3), with a main piston (2) and at least one trailing piston (11, 12). The trailing piston (11, 12) is axially guided on a cylindrical outer lateral face (38) of the main piston (2). The trailing piston (11, 12) has a thrust portion (13, 14) at one end near a piston web on the main piston, The thrust portion extends axially inward toward the piston web (10) A travel limiter (28) on the cylindrical housing limits a travel range of the trailing piston (11, 12) Under pressure, the trailing piston (11, 12) follows the main piston (2) until the trailing piston (11, 12) hits the travel limiter (28). The thrust portion (13, 14) of the trailing piston (11, 12) is shaped to fit into an associated recess (30, 31) in the piston web with a positive lock.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: May 17, 2022
    Assignee: WABCO GmbH
    Inventors: Hauke Karstens, Dennis Reimann
  • Publication number: 20200318734
    Abstract: A piston-cylinder assembly (1) has a cylindrical housing (3), with a main piston (2) and at least one trailing piston (11, 12). The trailing piston (11, 12) is axially guided on a cylindrical outer lateral face (38) of the main piston (2). The trailing piston (11, 12) has a thrust portion (13, 14) at one end near a piston web on the main piston, The thrust portion extends axially inward toward the piston web (10) A travel limiter (28) on the cylindrical housing limits a travel range of the trailing piston (11, 12) Under pressure, the trailing piston (11, 12) follows the main piston (2) until the trailing piston (11, 12) hits the travel limiter (28). The thrust portion (13, 14) of the trailing piston (11, 12) is shaped to fit into an associated recess (30, 31) in the piston web with a positive lock.
    Type: Application
    Filed: September 24, 2018
    Publication date: October 8, 2020
    Inventors: Hauke Karstens, Dennis Reimann
  • Patent number: 8622719
    Abstract: A hydraulic pump unit includes a cylindrical member that is fit into an outer circumference of the main shaft and a hydraulic pump body arranged on an outer circumferential side of the cylindrical member. The hydraulic pump body includes a ring cam mounted on the outer circumference of the cylindrical member, a pump bearing, a pump housing, a plurality of pistons housed in the pump housing and actuated by the ring cam, and a plurality of cylinders which guide the plurality of pistons in a radial direction and are arranged in a circumferential direction. The hydraulic pump unit is configured such that the pump unit is insertably fixed to the main shaft by the cylindrical member.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: January 7, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Kazuhisa Tsutsumi, Noguchi Toshihide, Yasuhiro Korematsu, Masayuki Shimizu, Alasdair Robertson, Uwe Stein, Hauke Karstens
  • Patent number: 8523521
    Abstract: Provided is a wind turbine generator including an electric pitch-control device that efficiently utilizes the entire circumferential teeth of a ring gear of a wind turbine blade so as to eliminate the need for work at high elevation using a crane or the like even when the teeth of the ring gear are partly broken. A wind turbine generator having an electric pitch-control device that performs pitch-angle control by using a motor to drive a pinion gear that meshes with a ring gear of a wind turbine blade includes a plurality of pinion-driving-mechanism securing supporters or a fixing/releasing switching part as a meshing-region changing mechanism that changes a pitch-angle-control meshing region of the ring gear that meshes with the pinion gear during the pitch-angle control.
    Type: Grant
    Filed: January 9, 2012
    Date of Patent: September 3, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Masahiro Kawai, Seita Seki, Yasuhiro Obase, Hauke Karstens
  • Publication number: 20130067900
    Abstract: A power generating apparatus includes a rotating shaft, a hydraulic pump driven by the rotating shaft, a hydraulic motor driven by pressurized oil supplied from the hydraulic pump, and a generator coupled to the hydraulic motor. Each of the hydraulic pump and motor includes working chambers each defined by a cylinder and a piston, a high pressure manifold and a low pressure manifold. Each of the high and low pressure manifolds includes branch channels connected to the working chambers and a merging channel connected to a high or low pressure oil line. The branch channels are equipped with high or low pressures valves, joined together and merged into the merging channel.
    Type: Application
    Filed: May 30, 2011
    Publication date: March 21, 2013
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kazuhisa Tsutsumi, Masayuki Shimizu, Atsushi Maekawa, Toshihide Noguchi, Yasuhiro Korematsu, Niall Caldwell, Daniil Dumnov, Stephen Salter, Uwe Stein, William Rampen, Robert Fox, Alasdair Robertson, Stephen Laird, Hauke Karstens, Venkata Pappala
  • Patent number: 8358024
    Abstract: An object of the present invention is to provide a wind turbine generator and a tidal current generator equipped with a hydraulic transmission with a combination of a hydraulic pump and a hydraulic motor and which has a superior productivity and maintainability. The wind turbine generator 1 has the hydraulic transmission 10 for transmitting the rotation energy of a main shaft 8 to a generator 20. The hydraulic transmission 10 includes a hydraulic pump 12 of variable displacement type which is driven by the main shaft 8, a hydraulic motor 14 of variable displacement type which is connected to the generator 20, and a high pressure oil line and a low pressure oil line which are arranged between the hydraulic pump 12 and the hydraulic motor 14. The hydraulic transmission 10 is at least partially constituted of a plurality of modules (M1 to M7).
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: January 22, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Kazuhisa Tsutsumi, Atsushi Maekawa, Masayuki Shimizu, Stephen Salter, Uwe Stein, William Rampen, Robert Fox, Hauke Karstens
  • Publication number: 20120114487
    Abstract: Provided is a wind turbine generator including an electric pitch-control device that efficiently utilizes the entire circumferential teeth of a ring gear of a wind turbine blade so as to eliminate the need for work at high elevation using a crane or the like even when the teeth of the ring gear are partly broken. A wind turbine generator having an electric pitch-control device that performs pitch-angle control by using a motor to drive a pinion gear that meshes with a ring gear of a wind turbine blade includes a plurality of pinion-driving-mechanism securing supporters or a fixing/releasing switching part as a meshing-region changing mechanism that changes a pitch-angle-control meshing region of the ring gear that meshes with the pinion gear during the pitch-angle control.
    Type: Application
    Filed: January 9, 2012
    Publication date: May 10, 2012
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Masahiro KAWAI, Seita SEKI, Yasuhiro OBASE, Hauke KARSTENS
  • Publication number: 20120063929
    Abstract: An object of the present invention is to provide a hydraulic pump structure which improves the ease of mounting the hydraulic pump on the main shaft, and a method of mounting the hydraulic pump which can be performed in a simplified manner. A hydraulic pump unit 10 is formed by unitizing a cylindrical member 46 fit into an outer circumference of the main shaft 12 and a hydraulic pump body 76 arranged on an outer circumferential side of the cylindrical member 46. The hydraulic pump body 76 comprises a ring cam 52 mounted on the outer circumference of the cylindrical member 46, a pump bearing 54, a pump housing 34, a plurality of piston 58 housed in the pump housing 34 and actuated by the ring cam, and a plurality of cylinders 60 which guide the plurality of pistons in a radial direction and are arranged in a circumferential direction, and the hydraulic pump unit 10 is configured such that the pump unit 10 is insertably fixed to the main shaft 12 by the cylindrical member 46.
    Type: Application
    Filed: November 30, 2010
    Publication date: March 15, 2012
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kazuhisa Tsutsumi, Toshihide Noguchi, Yasuhiro Korematsu, Masayuki Shimizu, Alasdair Robertson, Uwe Stein, Hauke Karstens
  • Publication number: 20120061969
    Abstract: An object of the present invention is to provide a wind turbine generator and a tidal current generator equipped with a hydraulic transmission with a combination of a hydraulic pump and a hydraulic motor and which has a superior productivity and maintainability. The wind turbine generator 1 has the hydraulic transmission 10 for transmitting the rotation energy of a main shaft 8 to a generator 20. The hydraulic transmission 10 includes a hydraulic pump 12 of variable displacement type which is driven by the main shaft 8, a hydraulic motor 14 of variable displacement type which is connected to the generator 20, and a high pressure oil line and a low pressure oil line which are arranged between the hydraulic pump 12 and the hydraulic motor 14. The hydraulic transmission 10 is at least partially constituted of a plurality of modules (M1 to M7).
    Type: Application
    Filed: November 30, 2010
    Publication date: March 15, 2012
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kazuhisa Tsutsumi, Atsushi Maekawa, Masayuki Shimizu, Stephen Salter, Uwe Stein, William Rampen, Robert Fox, Hauke Karstens
  • Publication number: 20110142631
    Abstract: Provided is a wind turbine generator including an electric pitch-control device that efficiently utilizes the entire circumferential teeth of a ring gear of a wind turbine blade so as to eliminate the need for work at high elevation using a crane or the like even when the teeth of the ring gear are partly broken. A wind turbine generator having an electric pitch-control device that performs pitch-angle control by using a motor to drive a pinion gear that meshes with a ring gear of a wind turbine blade includes a plurality of pinion-driving-mechanism securing supporters or a fixing/releasing switching part as a meshing-region changing mechanism that changes a pitch-angle-control meshing region of the ring gear that meshes with the pinion gear during the pitch-angle control.
    Type: Application
    Filed: December 23, 2010
    Publication date: June 16, 2011
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Masahiro KAWAI, Seita SEKI, Yasuhiro OBASE, Hauke KARSTENS
  • Patent number: 7834476
    Abstract: A method for running in a drive train component of a wind energy plant, wherein the wind energy plant has an operation management which can control at least one operational variable B significant for the strain of the drive train component to a desired value BS, wherein after starting up the drive train component, the desired value BS is limited by a maximum value BMax, which is preset depending on a yield value W which describes the yield of the wind energy plant achieved since starting up the drive train component.
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: November 16, 2010
    Assignee: Nordex Energy GmbH
    Inventors: Joachim Nitzpon, Hauke Karstens, Ulrich Harms
  • Patent number: 7809477
    Abstract: A method for starting up a wind energy plant after an operation stoppage, wherein the wind energy plant has a gearbox in the drive train and an operation management which can control at least one operational variable significant for the strain of the gearbox B of the wind energy plant to a desired value BSoll, wherein after the operation stoppage, the desired value BSoll is limited by a maximum value BMax, which is preset depending on a measured temperature of a gearbox component and/or of a lubricant for the gearbox.
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: October 5, 2010
    Assignee: Nordex Energy GmbH
    Inventors: Joachim Nitzpon, Hauke Karstens, Ulrich Harms
  • Publication number: 20090005909
    Abstract: A method for running in a drive train component of a wind energy plant, wherein the wind energy plant has an operation management which can control at least one operational variable B significant for the strain of the drive train component to a desired value Bsoll, wherein after starting up the drive train component, the desired value Bsoll is limited by a maximum value BMax, which is preset depending on a yield value W which describes the yield of the wind energy plant achieved since starting up the drive train component,
    Type: Application
    Filed: October 5, 2007
    Publication date: January 1, 2009
    Applicant: Nordex Energy GmbH
    Inventors: Joachim Nitzpon, Hauke Karstens, Ulrich Harms
  • Publication number: 20090001723
    Abstract: A method for starting up a wind energy plant after an operation stoppage, wherein the wind energy plant has a gearbox in the drive train and an operation management which can control at least one operational variable significant for the strain of the gearbox B of the wind energy plant to a desired value BSoll, wherein after the operation stoppage, the desired value BSoll is limited by a maximum value BMax, which is preset depending on a measured temperature of a gearbox component and/or of a lubricant for the gearbox.
    Type: Application
    Filed: October 5, 2007
    Publication date: January 1, 2009
    Applicant: Nordex Energy GmbH
    Inventors: Joachim Nitzpon, Hauke Karstens, Ulrich Harms