Patents by Inventor Peter Greb

Peter Greb 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: 11780317
    Abstract: A drive unit (100) is provided with a first electric machine (110), a second electric machine (120), a first shaft (130) and an output shaft (140). A rotor (111) of the first electric machine (110) is rotationally fixed to the first shaft (130), and a rotor (121) of the second electric machine (120) is rotationally fixed to the output shaft (140). The drive unit (100) also includes a separating clutch (150) and a connection element (230) for the rotationally fixed connecting of an internal combustion engine, and a first gear ratio step (142) is arranged between the connection element (230) and the shafts (130, 140) with a gear ration i<1. The drive unit (100) has an electro-mechanical parking lock unit (1) with which a rotational movement of the output of the first gear ratio step (142) can be blocked.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: October 10, 2023
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Andreas Trinkenschuh, Steffen Lehmann, Peter Greb, Laszlo Man
  • Publication number: 20230296172
    Abstract: A method for resetting a parking lock operating system for a motor vehicle includes providing the parking lock operating system and switching the parking lock operating system. The parking lock operating system includes a hydraulic fluid supply line with a hydraulic fluid, a base position in which a parking lock is active, and a transport position in which the parking lock is active. The parking lock operating system is switched from the base position to the base position or from the transport position to the base position by, in the following order: increasing a pressure of the hydraulic fluid above a second pressure threshold, lowering the pressure below a first pressure threshold, less than the second pressure threshold, increasing the pressure above the second pressure threshold, and lowering the pressure of the hydraulic fluid below the first pressure threshold.
    Type: Application
    Filed: July 5, 2021
    Publication date: September 21, 2023
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Peter Greb, Laszlo Man
  • Publication number: 20230243422
    Abstract: A parking lock actuation system for a motor vehicle includes an actuation element that is coupled or can be coupled to a parking lock and can be moved between a locking position, in which the parking lock is active, and an unlocking position, in which the parking lock is inactive. The system includes a locking element which is designed to fix the actuation element in the unlocking position in a form-fitting manner. The actuation element and the locking element (4) are each operatively connected to a respective hydraulic actuation cylinder, and the two hydraulic actuation cylinders are connected to a common hydraulic fluid supply line by a pressure chamber and are coupled to a pump via a first valve. The actuation cylinder of the locking element additionally has an unlocking pressure chamber which counteracts the actuation cylinder pressure chamber and which can be coupled to the pump via a second valve.
    Type: Application
    Filed: June 2, 2021
    Publication date: August 3, 2023
    Inventors: Peter Greb, Laszlo Man
  • Publication number: 20230243421
    Abstract: A parking lock actuation system for a motor vehicle includes an actuation element that can be moved between a locking position, in which a parking lock of the motor vehicle is active, and an unlocking position, in which the parking lock is inactive. The system also includes a locking element which is designed to fix the actuation element in the unlocking position in a form-fitting manner; and an electric actuator which has an adjusting effect on the locking element. A current circuit which has an autonomous power source is connected to the electric actuator, and a bistable switch and a monostable opener arranged in series to the bistable switch are used in the current circuit.
    Type: Application
    Filed: June 8, 2021
    Publication date: August 3, 2023
    Inventors: Peter Greb, Jens Mühlhausen
  • Publication number: 20230193995
    Abstract: A hydraulic parking lock actuation module for a parking lock with a parking lock piston, which can be hydraulically actuated in a parking lock cylinder from an initial position in an actuation direction by applying an actuation pressure, and which is mechanically coupled to an actuation rod which can be fixed via an engaging device in order to act as a locking mechanism for the parking lock piston. In order to simplify the actuation of the parking lock, for actuating the parking lock piston and the locking mechanism for the parking lock piston, the hydraulic parking lock actuation module includes only one active actuation valve with a tank connection and a working pressure connection at which different hydraulic pressure levels are applied.
    Type: Application
    Filed: April 9, 2021
    Publication date: June 22, 2023
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Peter GREB, Laszlo MAN
  • Publication number: 20230122123
    Abstract: A drive unit (100) is provided with a first electric machine (110), a second electric machine (120), a first shaft (130) and an output shaft (140). A rotor (111) of the first electric machine (110) is rotationally fixed to the first shaft (130), and a rotor (121) of the second electric machine (120) is rotationally fixed to the output shaft (140). The drive unit (100) also includes a separating clutch (150) and a connection element (230) for the rotationally fixed connecting of an internal combustion engine, and a first gear ratio step (142) is arranged between the connection element (230) and the shafts (130, 140) with a gear ration i<1. The drive unit (100) has an electro-mechanical parking lock unit (1) with which a rotational movement of the output of the first gear ratio step (142) can be blocked.
    Type: Application
    Filed: June 4, 2019
    Publication date: April 20, 2023
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Andreas TRINKENSCHUH, Steffen LEHMANN, Peter GREB, Laszlo MAN
  • Patent number: 11460108
    Abstract: A parking lock actuator includes a blocking cam, an actuating device, an energy store, a blocking drive, and an intermediate element. The blocking cam is arranged for positive engagement with a tooth gap of a parking lock gear and the actuating device is for transferring an actuating force to the blocking cam. The energy store is for transferring the actuating force from the actuating device to the blocking cam, the blocking drive is for displacing the actuating device, and the intermediate element is freely displaceable relative to the blocking drive over a predetermined intermediate path for displacing the actuating device. The blocking cam is arranged to positively engage the tooth gap to block rotational movement of the parking lock gear when the actuating device is in a blocked position, and the parking lock gear is rotatable when the actuating device is in an open position.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: October 4, 2022
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Peter Greb, Laszlo Man
  • Patent number: 11313465
    Abstract: A parking lock device includes a parking lock gear, a parking lock pawl, a control contour, and a contour following element for bearing against the control contour. The parking lock gear includes radially extending teeth with tooth gaps lying therebetween. The parking lock pawl has a portion arranged for radially engaging into one of the tooth gaps for blocking rotational movement of the parking lock gear. The control contour has a section extending in a rotational direction of the parking lock gear in a manner which differs from a circular path. During relative rotational movement between the parking lock gear and the parking lock pawl, the contour following element rotates relative to and bears against the control contour, forcing the contour following element to move the parking lock pawl with a radially inwardly directed movement component, deeply engaging the parking lock pawl in one of the tooth gaps.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: April 26, 2022
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Peter Greb, Laszlo Man
  • Publication number: 20210396311
    Abstract: A parking lock actuator includes a blocking cam, an actuating device, an energy store, a blocking drive, and an intermediate element. The blocking cam is arranged for positive engagement with a tooth gap of a parking lock gear and the actuating device is for transferring an actuating force to the blocking cam. The energy store is for transferring the actuating force from the actuating device to the blocking cam, the blocking drive is for displacing the actuating device, and the intermediate element is freely displaceable relative to the blocking drive over a predetermined intermediate path for displacing the actuating device. The blocking cam is arranged to positively engage the tooth gap to block rotational movement of the parking lock gear when the actuating device is in a blocked position, and the parking lock gear is rotatable when the actuating device is in an open position.
    Type: Application
    Filed: November 13, 2019
    Publication date: December 23, 2021
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Peter Greb, Laszlo Man
  • Publication number: 20210381593
    Abstract: An actuator for actuating a parking lock and for carrying out at least one other vehicle function in a motor vehicle includes a hydraulic unit and an actuation cylinder, rigidly connected to the hydraulic unit. The hydraulic unit has a hydraulic pump or valves driven by an electric motor. The actuation cylinder is for mechanically actuating a parking lock mechanism of the parking lock. In some embodiments, the actuator has an actuator housing and the actuation cylinder has a cylinder housing that is part of the actuator housing. In some embodiments, the actuation cylinder has a piston and an actuating element, movable by means of the piston, for actuating the parking lock mechanism.
    Type: Application
    Filed: October 18, 2019
    Publication date: December 9, 2021
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Peter Greb, Laszlo Man
  • Publication number: 20210010593
    Abstract: A parking lock device includes a parking lock gear, a parking lock pawl, a control contour, and a contour following element for bearing against the control contour. The parking lock gear includes radially extending teeth with tooth gaps lying therebetween. The parking lock pawl has a portion arranged for radially engaging into one of the tooth gaps for blocking rotational movement of the parking lock gear. The control contour has a section extending in a rotational direction of the parking lock gear in a manner which differs from a circular path. During relative rotational movement between the parking lock gear and the parking lock pawl, the contour following element rotates relative to and bears against the control contour, forcing the contour following element to move the parking lock pawl with a radially inwardly directed movement component, deeply engaging the parking lock pawl in one of the tooth gaps.
    Type: Application
    Filed: March 21, 2019
    Publication date: January 14, 2021
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Peter Greb, Laszlo Man
  • Patent number: 10731737
    Abstract: An angle-measuring device is provided for a rotationally-driven linear actuator, which can be implemented into a clutch actuator. A rotor element has an axis of rotation and rotates concentrically with a rotor of a rotary drive for an axially movable linear actuator element. A measurement magnet arrangement is fixed relative to the rotor element and has a polarization. The polarization is oriented in such a way that the magnetic field lines can change with a rotation of the rotor element so as to enable the angle to be precisely determined from at least one measurement position. At one location, a 360-degree sensor is provided for measuring angular positions based on the measurement magnet arrangement. At another location, a revolution-counting sensor is provided for counting a number of revolutions carried out based on the measurement magnet arrangement.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: August 4, 2020
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Markus Dietrich, Laszlo Man, Peter Greb
  • Patent number: 10663044
    Abstract: The disclosure relates to an actuator having a planetary roller screw drive comprising a housing having a cylinder chamber and a fluid reservoir forming one common volume and the housing is filled with a hydraulic fluid. The planetary roller screw drive comprises a spindle having a profiling, which meshes with a plurality of planetary rollers, which are arranged around the spindle and are supported at both ends in a planetary roller carrier. The planetary rollers mesh with an inner profiling of an internal ring gear surrounding the planetary rollers and the planetary rollers are supported in a sleeve surrounding the internal ring gear. According to the disclosure, the planetary roller carrier and/or the sleeve comprise one or more flow ducts connecting the interior and the exterior of a chamber defined radially by the sleeve and axially by the planetary roller carriers to one another.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: May 26, 2020
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Peter Greb, Alexander Dreher, Lars Schumann, Lászlo Mán
  • Patent number: 10487926
    Abstract: An actuator having a planetary screw drive (PSD), in particular for the operation of a clutch of a motor vehicle, wherein a plurality of planetary rollers which mesh with a ring gear that encircles the planetary rollers are in contact with a spindle, where the planetary rollers are positioned at both ends in a planetary roller carrier and the planet carriers are supported non-rotatingly in a sleeve that encircles the ring gear and points radially inward at both ends, wherein the sleeve and the planetary carriers supported in it are axially fixed and connected non-rotatingly to a rotor of a drive and are drivable around an axis of rotation, the spindle is supported non-rotatingly and the spindle performs an axial stroke when the rotor and the planetary carriers supported in the sleeve rotate, is provided.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: November 26, 2019
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Lars Schumann, Laszlo Man, Peter Greb
  • Patent number: 10487927
    Abstract: An actuator with a planetary screw drive (PSD), in particular to operate a clutch of a vehicle, wherein a centric spindle having a pitch is connected non-rotatingly to a rotor of a drive and is drivable by the drive around an axis of rotation, and a plurality of planetary rollers are engaged with the spindle and mesh with a ring gear encircling the planetary rollers which has grooves in the circumferential direction, wherein both ends of the planetary rollers are positioned in a planetary roller carrier. The planetary roller carriers are supported non-rotatingly on both ends in such a way that a fixed assignment of the pitch of the spindle to an axial travel of a component that is movable axially by the PSD, which is operatively connected to an axially actuatable piston, is realized.
    Type: Grant
    Filed: November 28, 2014
    Date of Patent: November 26, 2019
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Lars Schumann, Lazlo Man, Peter Greb
  • Patent number: 10247253
    Abstract: Embodiments of the present invention relate to a component group with a friction device with at least two components that are rotatable relative to one another, in particular for actuating a clutch of a vehicle, wherein a coil spring influencing the degree of efficiency, the friction is disposed between the components that are rotatable relative to one another and wherein the component group with a friction device is integrated in a transmission or an actuator, or both.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: April 2, 2019
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Lars Schumann, Lászlo Mán, Peter Greb
  • Patent number: 10151391
    Abstract: An actuation device for a motor vehicle having a transmission with gear steps and a friction clutch for automated actuation of both the transmission and the friction clutch, where the actuation device has an actuator device with whose help both a rotational movement and a translational movement is executable, in order to improve the actuation device in terms of construction and/or function.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: December 11, 2018
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Dominik Herkommer, Dirk Reimnitz, Peter Greb
  • Publication number: 20180340597
    Abstract: The disclosure relates to an actuator having a planetary roller screw drive comprising a housing having a cylinder chamber and a fluid reservoir forming one common volume and the housing is filled with a hydraulic fluid. The planetary roller screw drive comprises a spindle having a profiling, which meshes with a plurality of planetary rollers, which are arranged around the spindle and are supported at both ends in a planetary roller carrier. The planetary rollers mesh with an inner profiling of an internal ring gear surrounding the planetary rollers and the planetary rollers are supported in a sleeve surrounding the internal ring gear. According to the disclosure, the planetary roller carrier and/or the sleeve comprise one or more flow ducts connecting the interior and the exterior of a chamber defined radially by the sleeve and axially by the planetary roller carriers to one another.
    Type: Application
    Filed: March 14, 2016
    Publication date: November 29, 2018
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Peter Greb, Alexander Dreher, Lars Schumann, Lászlo Mán
  • Patent number: 10125851
    Abstract: A spindle drive unit, in particular for an actuator having a planetary screw drive (PWG) for actuating a clutch of a motor vehicle by an actuating element is provided, where the drive unit has an e-motor with a rotor and a stator and where a spindle provided with a pitch is connected non-rotatingly to the rotor and is drivable by the rotor around an axis of rotation. The spindle is designed as a threaded rod and a rotor carrier that holds the rotor is screwed onto the threaded rod, and the rotor carrier is rotationally secured and axially fixed on the spindle by a lock nut.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: November 13, 2018
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Lars Schumann, Lazlo Man, Peter Greb, Alexander Dreher
  • Publication number: 20180245675
    Abstract: An angle-measuring device is provided for a rotationally-driven linear actuator, which can be implemented into a clutch actuator. A rotor element has an axis of rotation and rotates concentrically with a rotor of a rotary drive for an axially movable linear actuator element. A measurement magnet arrangement is fixed relative to the rotor element and has a polarization. The polarization is oriented in such a way that the magnetic field lines can change with a rotation of the rotor element so as to enable the angle to be precisely determined from at least one measurement position. At one location, a 360-degree sensor is provided for measuring angular positions based on the measurement magnet arrangement. At another location, a revolution-counting sensor is provided for counting a number of revolutions carried out based on the measurement magnet arrangement.
    Type: Application
    Filed: August 24, 2016
    Publication date: August 30, 2018
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Markus DIETRICH, Laszlo MAN, Peter GREB