Patents by Inventor Ralf Windsheimer

Ralf Windsheimer 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: 11772253
    Abstract: A portable power tool has a drive unit for rotationally driving a tool receptacle about an axis of rotation, the drive unit having at least one drive motor and a shiftable transmission, which is arranged in a transmission housing with an at least partially sleeve-like clutch housing and a transmission cover fastened thereto. The tool includes a shifting element for shifting the shiftable transmission between at least two different gears, and a locking sleeve for locking the shifting element in at least a first and a second shifting position is arranged in the clutch housing. The shiftable transmission forms, at least in the first shifting position, a cross-sectional plane perpendicular to the axis of rotation in which the locking sleeve is arranged at least regionally between the transmission cover and the shifting element and the shifting element is arranged at least regionally between the locking sleeve and the clutch housing.
    Type: Grant
    Filed: August 26, 2021
    Date of Patent: October 3, 2023
    Assignee: Robert Bosch GmbH
    Inventors: Ralf Windsheimer, Suresh Subramaniam, Thomas Hampel
  • Publication number: 20230142025
    Abstract: A hand-held power tool includes a housing, in which at least one drive unit configured to drive a tool holder is arranged. The tool holder is designed to hold an insertable tool. The hand-held power tool includes an alignment apparatus having a control unit and at least one luminous element arranged on the housing. The alignment apparatus is designed to determine, in real time, during operation of the hand-held power tool, a current deviation of a selectable machining angle, which is selected via the control unit and which is formed between the insertable tool inserted in the tool holder and a workpiece surface that is to be machined, from an actual inclination angle between the insertable tool inserted in the tool holder and the workpiece surface to be machined, and to visualize said deviation using the at least one luminous element.
    Type: Application
    Filed: March 22, 2021
    Publication date: May 11, 2023
    Inventors: Ralf Windsheimer, Suresh Subramaniam, Thomas Hampel, Scott Novotny, Petra Kalinowski, Jan-Hendrik Heins
  • Publication number: 20230130793
    Abstract: A hand-held power tool, in particular an impact drill, is disclosed. The hand-held power tool includes a housing in which a drive unit for driving an output spindle is arranged. A catch mechanism is associated with the drive unit. The catch mechanism has a first crown disk which is connected to the output spindle for conjoint rotation, and a second crown disk which is arranged in the housing for conjoint rotation. In a first position, the first and second crown disks contact each other via associated catch geometries. In a second position, the second crown disk is arranged spaced apart from the first crown disk along a rotation axis of the output spindle. An annular friction element is arranged without friction in the first position, and generates a specified frictional force between the first and second crown disk in the second position.
    Type: Application
    Filed: March 22, 2021
    Publication date: April 27, 2023
    Inventors: Ralf Windsheimer, Suresh Subramaniam, Thomas Hampel
  • Publication number: 20220063079
    Abstract: A portable power tool has a drive unit for rotationally driving a tool receptacle about an axis of rotation, the drive unit having at least one drive motor and a shiftable transmission, which is arranged in a transmission housing with an at least partially sleeve-like clutch housing and a transmission cover fastened thereto. The tool includes a shifting element for shifting the shiftable transmission between at least two different gears, and a locking sleeve for locking the shifting element in at least a first and a second shifting position is arranged in the clutch housing. The shiftable transmission forms, at least in the first shifting position, a cross-sectional plane perpendicular to the axis of rotation in which the locking sleeve is arranged at least regionally between the transmission cover and the shifting element and the shifting element is arranged at least regionally between the locking sleeve and the clutch housing.
    Type: Application
    Filed: August 26, 2021
    Publication date: March 3, 2022
    Inventors: Ralf Windsheimer, Suresh Subramaniam, Thomas Hampel
  • Patent number: 10406670
    Abstract: A system includes: an add-on handle; and a hand-held power tool which includes a clutch setting ring, a chuck with clamping jaws and a handle fastening arrangement which is situated axially between a section of the chuck and the clutch setting ring. In at least one operating state the add-on handle fastened to the handle fastening arrangement and the clamping jaws of the chuck are situated in at least one plane which is oriented perpendicularly to a rotation axis of the chuck.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: September 10, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Heiko Roehm, Tobias Herr, Ralf Windsheimer
  • Patent number: 9987738
    Abstract: In a hand-held power tool having a transmission and a torque clutch, which has a torque limiting coupling associated with the transmission and with which a limiting transfer element is associated, to which at least one spring element is axially applied in the direction of the torque limiting coupling, a torque level of the torque clutch being settable via a user-operable operating element at least within predefined limits, the torque limiting coupling has at least one roller-shaped latch member.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: June 5, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventors: Heiko Roehm, Ralf Windsheimer
  • Patent number: 9573264
    Abstract: The invention is based on a handheld power tool, in particular a cordless handheld power tool, having a gear unit and having a switch device for switching the gear unit. The switch device is provided with at least one user-control switch element, and at least one retaining element that is provided for acting on the user-control switch element in at least one position of the user-control switch element, with a force in the direction of at least one switch position, or for keeping the user-control switch element in at least one switch position. According to the invention, the retaining element is secured to a gear element of the gear unit.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: February 21, 2017
    Assignee: ROBERT BOSCH GMBH
    Inventors: Thorsten Schaal, Ralf Windsheimer, Jens Blum, Heiko Roehm, Tobias Herr
  • Publication number: 20160250744
    Abstract: A hand-held power tool includes: a motor housing; an output spindle; at least one metal housing that includes a receiving area for fastening an additional handle and a connection area formed as one piece with the receiving area for a free-of-play, rotatably-fixed connection to the motor housing; and an insulation unit, which electrically insulates the output spindle and the metal housing from one another in an assembled state.
    Type: Application
    Filed: February 17, 2016
    Publication date: September 1, 2016
    Inventor: Ralf Windsheimer
  • Patent number: 9109670
    Abstract: In a handheld power tool having a reduction gear unit, drivable by a motor, for driving a drive shaft, the reduction gear unit being situated in a gear housing and being shiftable via a gearshift at least between a first gear having a comparatively high torque and a second gear having a comparatively low torque, the reduction gear unit is assigned a mechanical overload protection device which is designed to limit the reduction gear unit during operation of the handheld power tool, if a torque, transferred from the drive shaft to the reduction gear unit, exceeds a machine-specific limiting value.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: August 18, 2015
    Assignee: ROBERT BOSCH GMBH
    Inventors: Heiko Roehm, Ralf Windsheimer
  • Patent number: 9030145
    Abstract: A device for regulating an increase in the output torque over time of an electric drive motor, including a monitoring unit for monitoring an operating variable of the electric drive motor, a regulating unit for regulating the operating variable for regulating the increase in output torque over time, a control unit for activating the regulating unit as a function of a time derivation of the monitored operating variable, the regulating unit being designed to be deactivated after a predetermined period of time. A method for regulating an increase in the output torque over time of an electric drive motor is also described. A corresponding tool and a computer program having program code for carrying out the method are also described.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: May 12, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Jens Brennenstuhl, Heiko Roehm, Dietmar Saur, Tobias Herr, Ralf Windsheimer, Stefan Mock
  • Patent number: 8857536
    Abstract: The invention describes a hand-held power tool having a drive train, which includes a motor with a rotor, a drive shaft, and a transmission. According to the invention, at least one flywheel mass is provided that is positionable rotationally symmetrical to the drive shaft and connectable to the drive shaft for co-rotation therewith.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: October 14, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Jens Brennenstuhl, Ralf Windsheimer, Heiko Roehm
  • Publication number: 20140144656
    Abstract: A system includes: an add-on handle; and a hand-held power tool which includes a clutch setting ring, a chuck with clamping jaws and a handle fastening arrangement which is situated axially between a section of the chuck and the clutch setting ring. In at least one operating state the add-on handle fastened to the handle fastening arrangement and the clamping jaws of the chuck are situated in at least one plane which is oriented perpendicularly to a rotation axis of the chuck.
    Type: Application
    Filed: November 20, 2013
    Publication date: May 29, 2014
    Applicant: ROBERT BOSCH GMBH
    Inventors: Heiko ROEHM, Tobias HERR, Ralf WINDSHEIMER
  • Publication number: 20140144661
    Abstract: In a hand-held power tool having a transmission and a torque clutch, which has a torque limiting coupling associated with the transmission and with which a limiting transfer element is associated, to which at least one spring element is axially applied in the direction of the torque limiting coupling, a torque level of the torque clutch being settable via a user-operable operating element at least within predefined limits, the torque limiting coupling has at least one roller-shaped latch member.
    Type: Application
    Filed: November 27, 2013
    Publication date: May 29, 2014
    Applicant: ROBERT BOSCH GMBH
    Inventors: Heiko ROEHM, Ralf WINDSHEIMER
  • Publication number: 20140051539
    Abstract: In a handheld power tool having a reduction gear unit, drivable by a motor, for driving a drive shaft, the reduction gear unit being situated in a gear housing and being shiftable via a gearshift at least between a first gear having a comparatively high torque and a second gear having a comparatively low torque, the reduction gear unit is assigned a mechanical overload protection device which is designed to limit the reduction gear unit during operation of the handheld power tool, if a torque, transferred from the drive shaft to the reduction gear unit, exceeds a machine-specific limiting value.
    Type: Application
    Filed: February 1, 2012
    Publication date: February 20, 2014
    Inventors: Heiko Roehm, Ralf Windsheimer
  • Publication number: 20130057190
    Abstract: A device for regulating an increase in the output torque over time of an electric drive motor, including a monitoring unit for monitoring an operating variable of the electric drive motor, a regulating unit for regulating the operating variable for regulating the increase in output torque over time, a control unit for activating the regulating unit as a function of a time derivation of the monitored operating variable, the regulating unit being designed to be deactivated after a predetermined period of time. A method for regulating an increase in the output torque over time of an electric drive motor is also described. A corresponding tool and a computer program having program code for carrying out the method are also described.
    Type: Application
    Filed: July 3, 2012
    Publication date: March 7, 2013
    Inventors: Jens Brennenstuhl, Heiko Roehm, Dietmar Saur, Tobias Herr, Ralf Windsheimer, Stefan Mock
  • Publication number: 20110147021
    Abstract: The invention is based on a handheld power tool, in particular a cordless handheld power tool, having a gear unit and having a switch device for switching the gear unit. The switch device is provided with at least one user-control switch element, and at least one retaining element that is provided for acting on the user-control switch element in at least one position of the user-control switch element, with a force in the direction of at least one switch position, or for keeping the user-control switch element in at least one switch position. According to the invention, the retaining element is secured to a gear element of the gear unit.
    Type: Application
    Filed: December 17, 2010
    Publication date: June 23, 2011
    Inventors: Thorsten Schaal, Ralf Windsheimer, Jens Blum, Heiko Roehm, Tobias Herr
  • Publication number: 20110139478
    Abstract: The invention describes a hand-held power tool having a drive train, which includes a motor with a rotor, a drive shaft, and a transmission. According to the invention, at least one flywheel mass is provided that is positionable rotationally symmetrical to the drive shaft and connectable to the drive shaft for co-rotation therewith.
    Type: Application
    Filed: November 22, 2010
    Publication date: June 16, 2011
    Inventors: Jens BRENNENSTUHL, Ralf Windsheimer, Heiko Roehm