Patents by Inventor Andreas Biermann

Andreas Biermann 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: 20230279788
    Abstract: A switchable finger follower for a valve train of an internal combustion engine includes an outer and an inner lever, which at a first longitudinal end run pivotably relative to one another via respective bores on a common shaft. At this longitudinal end, the finger follower has a gas-exchange valve contact face on an underside. The outer lever has a pivot bearing on the underside at a further longitudinal end, and at least the inner lever has a cam running face on an upper side. The inner and outer levers are connectable to one another via at least one coupling slide, which spans a separation area between the levers. The outer and inner levers are braced relative to one another via a cam return spring, and the shaft is connected to the bore of the outer lever by an interference fit.
    Type: Application
    Filed: August 10, 2021
    Publication date: September 7, 2023
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Andreas Biermann, Rainer Schwinn, Adrian Bilan, Brian Koop, Jinhwan Jeon, Frank Himsel
  • Patent number: 11615897
    Abstract: A microscope system for flexibly, efficiently and quickly inspecting patterns and defects on extreme ultraviolet (EUV) lithography photomasks. The system includes a stand-alone plasma-based EUV radiation source with an emission spectrum with a freestanding line emission in the spectral range from 12.5 nm to 14.5 nm has a relative bandwidth of ?/??>1000, means for the broadband spectral filtering ?/??<50 for selecting the dominant freestanding emission line, means for suppressing radiation with wavelengths outside of the EUV spectral region, zone plate optics for magnified imaging of the object with a resolution which corresponds to the width of an outermost zone of the zone plate, a numerical aperture corresponding to more than 1000 zones, and a EUV detector array for capturing the patterned object.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: March 28, 2023
    Assignee: RI Research Institute GmbH
    Inventors: Rainer Lebert, Christoph Sebastian Phiesel, Thomas Missalla, Andreas Biermanns-Foeth, Christian Piel
  • Publication number: 20220392660
    Abstract: A microscope system for flexibly, efficiently and quickly inspecting patterns and defects on extreme ultraviolet (EUV) lithography photomasks. The system includes a stand-alone plasma-based EUV radiation source with an emission spectrum with a freestanding line emission in the spectral range from 12.5 nm to 14.5 nm has a relative bandwidth of ?/??>1000, means for the broadband spectral filtering ?/??<50 for selecting the dominant freestanding emission line, means for suppressing radiation with wavelengths outside of the EUV spectral region, zone plate optics for magnified imaging of the object with a resolution which corresponds to the width of an outermost zone of the zone plate, a numerical aperture corresponding to more than 1000 zones, and a EUV detector array for capturing the patterned object.
    Type: Application
    Filed: September 15, 2020
    Publication date: December 8, 2022
    Inventors: Rainer LEBERT, Christoph Sebastian PHIESEL, Thomas MISSALLA, Andreas BIERMANNS-FOETH, Christian PIEL
  • Patent number: 11215088
    Abstract: A preassembled module for a variable-lift valve drive of an internal combustion engine is provided for installation into a cylinder head. The module has a base plate with an electric linear actuator which lies on an upper side of the base plate. A guide plate, which lies on the upper side, has an outer side wall arranged to guide a slide piece. The guide piece extends below the base plate two downwardly pointing actuating fingers. Each respective actuating finger has a contact surface for moving a transverse coupling slide of a switchable rocker arm. The slide piece has a bracket which protrudes over the guide plate with a contact landing arm which runs transversely relative to the electric linear actuator. An actuator-side end of the contact landing arm is in contact with an actuating pin of the electric linear actuator to move the slide piece.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: January 4, 2022
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Andreas Biermann, Benedikt Noe, Martin Steigerwald, Michael Pribek, Frank Himsel
  • Patent number: 11193396
    Abstract: A pre-assembled module for a variable-stroke valve drive of an internal combustion engine is provided. The module includes a base plate having at least one projecting guide plate, an e-linear actuator positioned on the projecting guide plate, and a longitudinally guided push rod with two adjusting fingers extending along a wall of the guide plate. Each respective adjusting finger has a contact surface for displacement of a transverse coupling slide of a switchable cam follower. A rocker arm, having first and second arms, is suspended on an underside of the base plate; the first arm in contact with an adjusting pin of the linear actuator; and, the second arm in contact with the push rod for displacement thereof in a first direction. A spring means for displacement of the push rod in a second direction is arranged between the push rod and the guide plate.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: December 7, 2021
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Andreas Biermann, Benedikt Noe, Martin Steigerwald, Michael Pribek, Frank Himsel
  • Publication number: 20210324767
    Abstract: A preassembled module for a variable-lift valve drive of an internal combustion engine is provided for installation into a cylinder head. The module has a base plate with an electric linear actuator which lies on an upper side of the base plate. A guide plate, which lies on the upper side, has an outer side wall arranged to guide a slide piece. The guide piece extends below the base plate two downwardly pointing actuating fingers. Each respective actuating finger has a contact surface for moving a transverse coupling slide of a switchable rocker arm. The slide piece has a bracket which protrudes over the guide plate with a contact landing arm which runs transversely relative to the electric linear actuator. An actuator-side end of the contact landing arm is in contact with an actuating pin of the electric linear actuator to move the slide piece.
    Type: Application
    Filed: June 11, 2019
    Publication date: October 21, 2021
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Andreas Biermann, Benedikt Noe, Martin Steigerwald, Michael Pribek, Frank Himsel
  • Publication number: 20200011212
    Abstract: A pre-assembled module for a variable-stroke valve drive of an internal combustion engine is provided. The module includes a base plate having at least one projecting guide plate, an e-linear actuator positioned on the projecting guide plate, and a longitudinally guided push rod with two adjusting fingers extending along a wall of the guide plate. Each respective adjusting finger has a contact surface for displacement of a transverse coupling slide of a switchable cam follower. A rocker arm, having first and second arms, is suspended on an underside of the base plate; the first arm in contact with an adjusting pin of the linear actuator; and, the second arm in contact with the push rod for displacement thereof in a first direction. A spring means for displacement of the push rod in a second direction is arranged between the push rod and the guide plate.
    Type: Application
    Filed: June 28, 2019
    Publication date: January 9, 2020
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Andreas Biermann, Benedikt Noe, Martin Steigerwald, Michael Pribek, Frank Himsel
  • Patent number: 10422255
    Abstract: A hydraulic support element for a variable valve train of an internal combustion engine, which has a cylindrical pot-shaped housing and a hollow cylindrical piston guided for movement in this housing and whose inner end is supported by a compression spring on the base wall of the housing. The outer end extends past the housing and is formed as a hemispherical bearing head. The interior is divided into an inner supply pressure space and an outer switching pressure space that are connected by inlet openings in the cylindrical side walls of the housing and the piston with a cylinder head side supply pressure line and by a non-return valve to a high-pressure space enclosed between the inner end of the piston and the base wall of the housing, or to a cylinder head side switching pressure line and also by a central hole formed in the bearing head to a rocker arm side switching pressure channel.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: September 24, 2019
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Andreas Biermann, Matthias Ammann
  • Publication number: 20180355768
    Abstract: A hydraulic support element for a variable valve train of an internal combustion engine, which has a cylindrical pot-shaped housing and a hollow cylindrical piston guided for movement in this housing and whose inner end is supported by a compression spring on the base wall of the housing. The outer end extends past the housing and is formed as a hemispherical bearing head. The interior is divided into an inner supply pressure space and an outer switching pressure space that are connected by inlet openings in the cylindrical side walls of the housing and the piston with a cylinder head side supply pressure line and by a non-return valve to a high-pressure space enclosed between the inner end of the piston and the base wall of the housing, or to a cylinder head side switching pressure line and also by a central hole formed in the bearing head to a rocker arm side switching pressure channel.
    Type: Application
    Filed: May 30, 2018
    Publication date: December 13, 2018
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Andreas Biermann, Matthias Ammann
  • Patent number: 9995184
    Abstract: An arrangement for coupling two components that can move relative to each other in a switchable valve train component for an internal combustion engine is provided, with a coupling element (3) that can be moved for coupling the components with a flattened coupling surface (5) for contacting a corresponding locking contour. The locking contour has recesses (7) in which the coupling element (3) can engage so that it can move in contact with the locking contour for coupling with its coupling surface (5) in a position slightly rotated relative to a predetermined coupling position.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: June 12, 2018
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Oliver Popp, Andreas Biermann
  • Publication number: 20170067375
    Abstract: An arrangement for coupling two components that can move relative to each other in a switchable valve train component for an internal combustion engine is provided, with a coupling element (3) that can be moved for coupling the components with a flattened coupling surface (5) for contacting a corresponding locking contour. The locking contour has recesses (7) in which the coupling element (3) can engage so that it can move in contact with the locking contour for coupling with its coupling surface (5) in a position slightly rotated relative to a predetermined coupling position.
    Type: Application
    Filed: September 7, 2016
    Publication date: March 9, 2017
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Oliver Popp, Andreas Biermann
  • Patent number: 8910544
    Abstract: A cam part (1) is provided for a variable sliding cam valve drive of an internal combustion engine, which cam part (1) can be mounted on a basic shaft of the sliding cam valve drive fixedly so as to rotate with it but axially displaceably, and has one or more cam groups (2, 3) and at least one connecting link piece (4) with at least one spiral groove (5) for an actuator pin engagement. At least one weight-reducing groove (7) which does not coincide with the spiral groove (5) is formed on the outer casing (6) of the cam part (1).
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: December 16, 2014
    Assignee: Schaeffler Technologies GmbH & Co. KG
    Inventors: Arne Manteufel, Andreas Biermann
  • Publication number: 20130247711
    Abstract: A cam part (1) is provided for a variable sliding cam valve drive of an internal combustion engine, which cam part (1) can be mounted on a basic shaft of the sliding cam valve drive fixedly so as to rotate with it but axially displaceably, and has one or more cam groups (2, 3) and at least one connecting link piece (4) with at least one spiral groove (5) for an actuator pin engagement. At least one weight-reducing groove (7) which does not coincide with the spiral groove (5) is formed on the outer casing (6) of the cam part (1).
    Type: Application
    Filed: March 5, 2013
    Publication date: September 26, 2013
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Arne Manteufel, Andreas Biermann