Patents by Inventor Mark Boehm

Mark Boehm 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: 20250100532
    Abstract: A method for ascertaining a wear value of an electromechanical wheel brake unit for a motor vehicle. The wheel brake unit includes a displaceable actuator element which is movable by a controllable actuator against a brake disk to generate a braking force. The actuator includes an electric motor with a rotor rotatably mounted and operatively connected to the actuator element. In the method, depending on the displacement of the actuator element, the wear value of the wheel brake unit is determined. For ascertaining the wear value, the actuator element is first displaced against an end stop. The actuator element is subsequently moved against the brake disk. When the actuator element is moved from the end stop against the brake disk, the number of revolutions of the rotor is monitored. Depending on the sensed number of revolutions, the wear value of the wheel brake unit is ascertained.
    Type: Application
    Filed: August 13, 2024
    Publication date: March 27, 2025
    Inventors: Andrej Gardt, Dietmar Kratzer, Mark Boehm, Martin Winkler
  • Publication number: 20250001991
    Abstract: An actuation device for a brake system. The actuation device includes an electric machine, a rotor of the electric machine is arranged on a rotatably mounted drive shaft in a rotationally fixed manner; a displaceably mounted pressure element; a transmission device by means of which the drive shaft is operatively connected to the pressure element such that the pressure element can be moved by a rotation of the drive shaft, the transmission device having a displaceable threaded spindle; and an anti-rotation device which acts between the threaded spindle and a housing of the actuation device and which includes a circumferential backlash. The actuation device includes a spring element which applies a preload force to the threaded spindle in order to close the circumferential backlash.
    Type: Application
    Filed: May 25, 2023
    Publication date: January 2, 2025
    Inventors: Andreas Bresser, Mark Boehm
  • Patent number: 12172616
    Abstract: An electromechanical brake pressure generator for a hydraulic braking system of a vehicle. The brake pressure generator has a spindle drive unit for converting an input-drive-side rotational motion into a translational motion for piston actuation of a hydraulic piston/cylinder unit. A multi-stage gear linkage is disposed between the spindle drive unit and an electric drive motor. The gear linkage encompasses a planetary gearset unit driven by a motor pinion constituting a sun gear, the output-drive-side ring gear of which unit drives the spindle drive unit. A motor shaft of the electric drive motor extends in adjacently parallel fashion next to a spindle drive shaft of the spindle drive unit.
    Type: Grant
    Filed: February 8, 2020
    Date of Patent: December 24, 2024
    Assignee: ROBERT BOSCH GMBH
    Inventors: Claus Oehler, Mark Boehm, Martin Uhlig, Christoph Oehler, Marc Micke, Konstantin Haberkorn
  • Patent number: 12168426
    Abstract: An electromechanically drivable brake pressure generator for a hydraulic braking system of a vehicle. The electromechanically drivable brake pressure generator includes an electric motor, using which a driving rotational speed is generatable; a planetary gear, which is driven on the input side by the electric motor to convert the driving rotational speed of the electric motor into a slower rotational speed, the planetary gear including an annulus gear, accommodated rotatably fixedly thereto in an annulus gear receptacle; and a hydraulic module, which is connected to an output side of the planetary gear and using which a brake pressure is generatable. A torque support is situated between the annulus gear and the annulus gear receptacle, which extends in an axial direction to the planetary gear and which cooperates with a recess so that the annulus gear and the annulus gear receptacle are held rotatably fixedly with respect to one another.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: December 17, 2024
    Assignee: ROBERT BOSCH GMBH
    Inventor: Mark Boehm
  • Publication number: 20240410434
    Abstract: An electromechanical brake for a motor vehicle. The electromechanical brake includes a brake caliper forming a housing, in which is arranged a spindle drive that is drivable via a drive motor so that a brake piston is movable for applying an axial braking force. The brake caliper is formed in one piece and forms not only an axial support for the spindle drive but also a caliper body so that the braking force and a supporting force counteracting the braking force are absorbed by the brake caliper.
    Type: Application
    Filed: May 15, 2024
    Publication date: December 12, 2024
    Inventors: Dietmar Kratzer, Andrej Gardt, Bernd Lutz, Janos Tamas Csoti, Mark Boehm, Martin Winkler
  • Publication number: 20240410435
    Abstract: An electromechanical brake for braking a motor vehicle. The electromechanical brake includes an electric motor having a shaft via which a brake piston can be axially moved for braking. A disk is arranged on the shaft and has a plurality of recesses arranged in the circumferential direction. In addition, the electromechanical brake includes a magnetic actuator which axially moves a pin so that one end of the pin interacts with the recesses of the disk and blocks a movement of the shaft in a brake release direction, whereby the pin can be held in a bistable manner. The magnetic actuator and a control unit, for controlling the electric motor and the magnetic actuator, are arranged in the axial direction relative to the electric motor, and the pin is movable parallel to the shaft.
    Type: Application
    Filed: May 24, 2024
    Publication date: December 12, 2024
    Inventors: Bernd Lutz, Dietmar Kratzer, Felix Zimmermann, Mark Boehm, Martin Winkler
  • Patent number: 12162449
    Abstract: An electromechanical brake pressure generator including a spindle drive unit for converting a rotational motion of an electric motor-driven drive shaft into a translatory motion of a piston that is coupled to the spindle drive unit, the spindle drive unit being operatively connected to the drive shaft via a multi-stage transmission. The multi-stage transmission is a planetary gear set having a first and a second stage. With the aid of the transmission, a spindle or a spindle nut of the spindle drive unit is drivable, which is rotatably mounted in a housing of the brake pressure generator via a bearing assembly receiving axial and radial forces. A braking system for a vehicle including an electromechanical brake pressure generator is also described.
    Type: Grant
    Filed: July 8, 2021
    Date of Patent: December 10, 2024
    Assignee: ROBERT BOSCH GMBH
    Inventors: Florian Tuerk, Willi Nagel, Claus Oehler, Mark Boehm
  • Patent number: 12060045
    Abstract: An electromechanical brake pressure generator for a hydraulic braking system of a vehicle. The electromechanical brake booster includes at least one gear for transferring a torque of the electric motor for brake pressure generation. The gear in this case includes a planetary carrier for supporting planetary wheels, planetary wheels pins which are connected to the planetary carrier and on which the planetary wheels are rotatably fastenable, and a pinion for transferring a drive torque or output torque, which is rotatably fixedly connected to the planetary carrier at a side thereof opposite the planetary wheel pins. At least the part of the planetary carrier that includes the planetary wheel pins is materially integrally formed with the latter from the same material.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: August 13, 2024
    Assignee: ROBERT BOSCH GMBH
    Inventors: Christoph Oehler, Claus Oehler, Mark Boehm, Martin Uhlig, Sebastian Martin Reichert
  • Patent number: 11981305
    Abstract: An electromechanically drivable brake pressure generator for a hydraulic brake system of a vehicle. The brake pressure generator including a spindle drive unit for converting a rotary movement on the drive side into a translational movement for the purpose of actuating a piston of a hydraulic piston-and-cylinder unit. A gear unit is arranged between the spindle drive unit and an electric drive motor. A drive motor axis and an axis of the spindle drive unit are arranged radially offset from one another. The piston-and-cylinder unit and the electric drive motor are arranged on axially opposite sides of the gear unit.
    Type: Grant
    Filed: October 29, 2020
    Date of Patent: May 14, 2024
    Assignee: ROBERT BOSCH GMBH
    Inventors: Claus Oehler, Mark Boehm
  • Publication number: 20240109525
    Abstract: An electromechanically drivable brake pressure generator for a hydraulic braking system of a vehicle. The electromechanically drivable brake pressure generator includes an electric motor, using which a driving rotational speed is generatable; a planetary gear, which is driven on the input side by the electric motor to convert the driving rotational speed of the electric motor into a slower rotational speed, the planetary gear including an annulus gear, accommodated rotatably fixedly thereto in an annulus gear receptacle; and a hydraulic module, which is connected to an output side of the planetary gear and using which a brake pressure is generatable. A torque support is situated between the annulus gear and the annulus gear receptacle, which extends in an axial direction to the planetary gear and which cooperates with a recess so that the annulus gear and the annulus gear receptacle are held rotatably fixedly with respect to one another.
    Type: Application
    Filed: August 20, 2020
    Publication date: April 4, 2024
    Inventor: Mark Boehm
  • Publication number: 20240101094
    Abstract: An electromechanically drivable brake pressure generator for a hydraulic braking system of a vehicle. The brake pressure generator includes a spindle drive unit for converting a drive-side rotary motion into a translatory motion for the actuation of a piston of a hydraulic piston/cylinder unit, a planetary gear, which is connected to an electric drive motor, being situated between the spindle drive unit and an electric drive motor at whose output-side planet carrier axle a spur gear is attached, via which the spindle drive unit is drivable. The spur gear is mounted via a first bearing, which is situated between the spur gear and the planetary gear, and via a second bearing, which is situated on an axial side of the spur gear situated opposite the first bearing.
    Type: Application
    Filed: October 28, 2020
    Publication date: March 28, 2024
    Inventors: Claus Oehler, Mark Boehm
  • Patent number: 11834020
    Abstract: An electromechanically drivable brake pressure generator for a hydraulic braking system of a vehicle, including an electric motor unit, which is activatable with the aid of an electronic control unit in accordance with a brake pressure to be applied and whose rotary motion generated thereby is converted by a reducing gearbox unit including an output-side spindle drive unit into a translatory motion for actuating a piston of a hydraulic piston/cylinder unit. A hydraulic block of the piston/cylinder unit also at least partially accommodates the electric motor unit in such a way that a motor shaft of the electric motor unit extending at least predominantly in the area of the hydraulic block is situated axially parallel to a longitudinal axis of the piston of the piston/cylinder unit which is movable in the hydraulic block.
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: December 5, 2023
    Assignee: ROBERT BOSCH GMBH
    Inventors: Mark Boehm, Claus Oehler, Matthias Greiner
  • Patent number: 11808330
    Abstract: An electromechanical brake pressure generator including a threaded drive system. The system includes a rotatable spindle nut, a axially displaceable spindle cooperating with a thread of the spindle nut, and a hydraulic piston which at least partially radially surrounds the spindle and the spindle nut and is rotatably fixedly connected to the spindle and which carries out an axial piston stroke as a result of the rotation of the spindle nut. The system includes a housing which at least partially surrounds the hydraulic piston and forms a hydraulic cylinder, and an axial recess, in the hydraulic cylinder, which forms an anti-twist protection together with a torque support formed at the hydraulic piston and using which the hydraulic piston and the spindle are secured against twisting during a rotation of the spindle nut, the recess forming a sliding surface for the torque support of the hydraulic piston.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: November 7, 2023
    Assignee: ROBERT BOSCH GMBH
    Inventors: Mark Boehm, Claus Oehler
  • Publication number: 20230286482
    Abstract: A drive device for an electromechanical brake device, in particular a brake booster. The drive device includes an electric motor that has a housing and a rotor shaft rotatably mounted in the housing. The rotor shaft is coupled to a transmission, in particular a planetary gear train that comprises a ring gear. The rotor shaft is rotatably mounted in the housing by at least one roller bearing. The roller bearing is held in a bearing seat of a bearing cover situated in the housing. The bearing cover has a ring-gear portion, which is spaced apart from the bearing seat and in which the ring gear is situated.
    Type: Application
    Filed: July 5, 2021
    Publication date: September 14, 2023
    Inventors: Mark Boehm, Sebastian Martin Reichert, Willi Nagel
  • Publication number: 20230116286
    Abstract: A drive device for a braking system of a motor vehicle. The drive device includes a housing and an electric machine that includes a rotatably supported drive shaft. The drive shaft is connected or connectable to an actuator element of the braking system via a planet wheel gear situated in the housing. The drive shaft is rotatably supported in a bearing shield situated in the housing. The bearing shield is made of plastic.
    Type: Application
    Filed: March 3, 2021
    Publication date: April 13, 2023
    Inventors: Claus Oehler, Holger Seeg, Janos Tamas Csoti, Mark Boehm
  • Publication number: 20230001909
    Abstract: An electromechanically drivable brake pressure generator for a hydraulic brake system of a vehicle. The brake pressure generator including a spindle drive unit for converting a rotary movement on the drive side into a translational movement for the purpose of actuating a piston of a hydraulic piston-and-cylinder unit. A gear unit is arranged between the spindle drive unit and an electric drive motor. A drive motor axis and an axis of the spindle drive unit are arranged radially offset from one another. The piston-and-cylinder unit and the electric drive motor are arranged on axially opposite sides of the gear unit.
    Type: Application
    Filed: October 29, 2020
    Publication date: January 5, 2023
    Inventors: Claus Oehler, Mark Boehm
  • Patent number: 11511722
    Abstract: An electromechanical brake pressure generator for a hydraulic braking system of a vehicle, including a threaded drive system for converting a drive-side rotary motion into a translatory motion for brake pressure generation. The system includes a spindle rotatable via an electric motor, a spindle nut cooperating with a thread of the spindle so the spindle nut is axially displaceable with a rotation of the spindle and a brake fluid is loadable or relievable, and a housing which, together with the spindle nut, forms an anti-twist protection which secures the spindle nut against twisting during rotation of the spindle. The spindle nut forms at least one spindle nut reference surface, which cooperates with at least one stop surface, which is stationary with respect to the housing, in a relief end position of the spindle nut in such a way that an instantaneous axial position of the spindle nut is determinable therefrom.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: November 29, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Mark Boehm, Sebastian Martin Reichert
  • Patent number: 11466761
    Abstract: An electromechanical brake pressure generator for a hydraulic braking system of a vehicle, including at least one threaded drive system. The system includes a hydraulic piston, a spindle and a spindle nut, which cooperate via a thread, and includes an electromotive drive, via which the spindle and the spindle nut are rotatable relative to one another. The hydraulic piston of the piston/cylinder unit at least partially radially surrounds the spindle and the spindle nut, the hydraulic piston being accommodated in a hydraulic cylinder of the piston/cylinder unit. An anti-twist protection is formed by a recess extending in the axial direction and forming a sliding surface, and by a sliding element protruding into the recess. The sliding element rests against a planar contact area of the sliding surface so that the hydraulic piston is secured against twisting and is axially displaceable by a rotation of the spindle or the spindle nut.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: October 11, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Claus Oehler, Mark Boehm, Martin Uhlig
  • Publication number: 20220306065
    Abstract: An electromechanical brake pressure generator for a hydraulic braking system of a vehicle. The electromechanical brake booster includes at least one gear for transferring a torque of the electric motor for brake pressure generation. The gear in this case includes a planetary carrier for supporting planetary wheels, planetary wheels pins which are connected to the planetary carrier and on which the planetary wheels are rotatably fastenable, and a pinion for transferring a drive torque or output torque, which is rotatably fixedly connected to the planetary carrier at a side thereof opposite the planetary wheel pins. At least the part of the planetary carrier that includes the planetary wheel pins is materially integrally formed with the latter from the same material.
    Type: Application
    Filed: February 10, 2020
    Publication date: September 29, 2022
    Inventors: Christoph Oehler, Claus Oehler, Mark Boehm, Martin Uhlig, Sebastian Martin Reichert
  • Patent number: 11420605
    Abstract: An electromechanical brake pressure generator for a hydraulic braking system of a vehicle. The electromechanical brake pressure generator includes at least one threaded drive system for converting a drive-side rotary motion into a translatory motion for the brake pressure generation. The threaded drive system includes a rotatable spindle nut, and a spindle cooperating with a thread of the spindle nut so that the spindle is axially displaceable with a rotation of the spindle nut. The threaded drive system includes a drive wheel, which is non-rotatably situated on the spindle nut and via which the spindle nut is connected to the electric motor, the drive wheel and the spindle nut being designed as separate plastic components, including a plurality of mutually corresponding connecting structures which, in the assembled state, engage one another in a form-locked manner in such a way that a torque required for rotating the spindle nut is transmittable.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: August 23, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Mark Boehm, Claus Oehler