Patents by Inventor Axel Kuhnle
Axel Kuhnle 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).
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Patent number: 11901852Abstract: A method for detecting a transmission backlash in a hand-held power tool, the hand-held power tool comprising a drive motor that has a drive shaft, a tool spindle, and a transmission that, in respect of drive, connects the drive shaft to the tool spindle, includes actuating, in a first actuation, the drive motor at least until the value of a first variable, representing a drag torque, is at least approximately constant. The method includes, during the first actuation, determining a value of a second variable which is associated with the rotation of the drive shaft of the drive motor during the first actuation, and determining a value of a third variable, representing a transmission backlash, based upon a change in the second variable during the first actuation.Type: GrantFiled: September 29, 2021Date of Patent: February 13, 2024Assignee: Robert Bosch GmbHInventors: Hardy Schmid, Axel Kuhnle, Hagen Philipp Keinath, Matthias Tauber, Sebastian Maier
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Patent number: 11811250Abstract: An electrical consumer system includes an electrical consumer with a first mating interface and a first plurality of electrical contacts, and a removable battery pack including a second mating interface and a second plurality of electrical contacts, the second mating interface configured to removably mate with the first mating interface such that the second plurality of contacts contact the first plurality of contacts. At least one of the first and second mating interfaces includes a temperature sensor configured to detect at least one of a temperature of the at least one of the first and second mating interfaces, and a temperature of the first or second electrical contacts of the at least one of the first and second mating interfaces.Type: GrantFiled: July 22, 2021Date of Patent: November 7, 2023Assignee: Robert Bosch GmbHInventors: Arindam Haldar, Axel Kuhnle, Benjamin Grauer, Christian Wiedemann, Jan Breitenbach, Marcin Rejman, Tobias Mangold, Tobias Overbeck
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Publication number: 20220105617Abstract: A method for detecting a transmission backlash in a hand-held power tool, the hand-held power tool comprising a drive motor that has a drive shaft, a tool spindle, and a transmission that, in respect of drive, connects the drive shaft to the tool spindle, includes actuating, in a first actuation, the drive motor at least until the value of a first variable, representing a drag torque, is at least approximately constant. The method includes, during the first actuation, determining a value of a second variable which is associated with the rotation of the drive shaft of the drive motor during the first actuation, and determining a value of a third variable, representing a transmission backlash, based upon a change in the second variable during the first actuation.Type: ApplicationFiled: September 29, 2021Publication date: April 7, 2022Inventors: Hardy Schmid, Axel Kuhnle, Hagen Philipp Keinath, Matthias Tauber, Sebastian Maier
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Publication number: 20220052542Abstract: An electrical consumer system includes an electrical consumer with a first mating interface and a first plurality of electrical contacts, and a removable battery pack including a second mating interface and a second plurality of electrical contacts, the second mating interface configured to removably mate with the first mating interface such that the second plurality of contacts contact the first plurality of contacts. At least one of the first and second mating interfaces includes a temperature sensor configured to detect at least one of a temperature of the at least one of the first and second mating interfaces, and a temperature of the first or second electrical contacts of the at least one of the first and second mating interfaces.Type: ApplicationFiled: July 22, 2021Publication date: February 17, 2022Inventors: Arindam Haldar, Axel Kuhnle, Benjamin Grauer, Christian Wiedemann, Jan Breitenbach, Marcin Rejman, Tobias Mangold, Tobias Overbeck
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Patent number: 10682747Abstract: A protective device at least for protecting a user in the event of an uncontrolled blockage of a portable power tool includes at least one rotationally drivable shaft and at least one wrap-spring-free overload clutch unit which is arranged on the shaft and is configured at least to interrupt transmission of a drive force if a torque limit is exceeded. The protective device further including at least one wrap-spring clutch unit configured to brake the shaft.Type: GrantFiled: March 28, 2016Date of Patent: June 16, 2020Assignee: Robert Bosch GmbHInventors: Axel Kuhnle, Lars Schmid, Carsten Diem
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Patent number: 9508497Abstract: An electric switch, in particular for an electric power tool, in particular a hammer drill, comprises a first switching device and a second switching device, wherein the first switching device can be adjusted by adjusting a first mechanical signaling means from a first switched state to a second switched state, wherein the second switching device can be adjusted by adjusting a second electrical or mechanical signaling means from a third switched state in which the electric switch acts as a pushbutton into a fourth switched state in which the switch acts as a rocker switch. The disclosure further relates to an electrical power tool having an electric switch according to the disclosure.Type: GrantFiled: November 16, 2011Date of Patent: November 29, 2016Assignee: Robert Bosch GmbHInventors: Axel Kuhnle, Peter Schwenkel
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Publication number: 20160288308Abstract: A protective device at least for protecting a user in the event of an uncontrolled blockage of a portable power tool includes at least one rotationally drivable shaft and at least one wrap-spring-free overload clutch unit which is arranged on the shaft and is configured at least to interrupt transmission of a drive force if a torque limit is exceeded. The protective device further including at least one wrap-spring clutch unit configured to brake the shaft.Type: ApplicationFiled: March 28, 2016Publication date: October 6, 2016Inventors: Axel Kuhnle, Lars Schmid, Carsten Diem
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Patent number: 9358677Abstract: A hand-power tool includes at least one oscillation-damping device that has at least one damping spring and a damping mass. The hand-power tool also includes a drive mechanism and a mechanism housing. The mechanism housing has a housing cover which is provided for closing a chamber in which the drive mechanism lies, and the housing cover has at least one fixing mechanism that at least partially fixes the oscillation-damping device in at least one operating state.Type: GrantFiled: October 22, 2010Date of Patent: June 7, 2016Assignee: Robert Bosch GmbHInventors: Axel Kuhnle, Matthias Tauber, Juergen Bochert, Carsten Diem, Willy Braun, Christian Wiedemann, Joerg Kaiser, Patrick Heinen, Roger Hahn, Thomas Speda
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Patent number: 8678104Abstract: The invention is based on a handheld power tool, having at least one vibration-cancelling device that has at least one cancellation spring and one cancellation mass. It is proposed that the cancellation mass is constructed of at least one first mass part and at least one second mass part.Type: GrantFiled: December 2, 2010Date of Patent: March 25, 2014Assignee: Robert Bosch GmbHInventors: Axel Kuhnle, Matthias Tauber, Juergen Bochert, Carsten Diem, Willy Braun, Christian Wiedemann, Joerg Kaiser, Patrick Heinen, Roger Hahn, Thomas Speda
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Publication number: 20130341169Abstract: An electric switch, in particular for an electric power tool, in particular a hammer drill, comprises a first switching device and a second switching device, wherein the first switching device can be adjusted by adjusting a first mechanical signaling means from a first switched state to a second switched state, wherein the second switching device can be adjusted by adjusting a second electrical or mechanical signaling means from a third switched state in which the electric switch acts as a pushbutton into a fourth switched state in which the switch acts as a rocker switch. The disclosure further relates to an electrical power tool having an electric switch according to the disclosure.Type: ApplicationFiled: November 16, 2011Publication date: December 26, 2013Applicant: Robert Bosch GmbHInventors: Axel Kuhnle, Peter Schwenkel
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Publication number: 20120318551Abstract: A hand-power tool includes at least one oscillation-damping device that has at least one damping spring and a damping mass. The hand-power tool also includes a drive mechanism and a mechanism housing. The mechanism housing has a housing cover which is provided for closing a chamber in which the drive mechanism lies, and the housing cover has at least one fixing mechanism that at least partially fixes the oscillation-damping device in at least one operating state.Type: ApplicationFiled: October 22, 2010Publication date: December 20, 2012Applicant: Robert Bosch GmbHInventors: Axel Kuhnle, Matthias Tauber, Juergen Bochert, Carsten Diem, Willy Braun, Christian Wiedemann, Joerg Kaiser, Patrick Heinen, Roger Hahn, Thomas Speda
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Patent number: 8316957Abstract: A hand-held power tool has a main element having a tool axis, a center of gravity, and a normal axis which extends perpendicular to the tool axis and through the center of gravity. The tool axis and the normal axis define a plane of motion. A handle supported in the plane of motion such that it is movable relative to the main element. A spring unit connects the handle with the main element and includes a spring element. The handle has a handle body, a rotary element which connects the handle body and the main element. The rotary element is rotatable relative to the main element and to the handle body.Type: GrantFiled: June 28, 2011Date of Patent: November 27, 2012Assignee: Robert Bosch GmbHInventors: Axel Kuhnle, Karl Frauhammer, Willy Braun
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Patent number: 8231438Abstract: The invention relates to a hand-held electric power tool comprising at least one driven rotating part (3) that is mounted in at least one bearing (7, 13). According to the invention, the rotating part (3) is vibrationally decoupled from the bearing (7, 13).Type: GrantFiled: May 4, 2007Date of Patent: July 31, 2012Assignee: Robert Bosch GmbHInventors: Axel Kuhnle, Justus Lamprecht, Joerg Lemmel, Steffen Tiede, Ulrich Bohne, Dietmar Saur
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Patent number: 8091651Abstract: A hand-held power tool includes a main element with a normal axis which extends perpendicularly to a tool axis and through a center of gravity. A handle is supported in the plane of motion defined by the tool axis and the normal axis such that it is movable relative to the main element. A spring unit connects the handle with the main element, and has a spring element to define a trajectory of at least one portion of the handle in the plane of motion under the influence of a load force triggered when the handle is moved out of a neutral position and approaches the stationary main element. A rotary element defines a joint-free rotation axis, about which the handle rotates in the plane of motion when a motion takes place relative to the main element.Type: GrantFiled: May 4, 2007Date of Patent: January 10, 2012Assignee: Robert Bosch GmbHInventors: Axel Kuhnle, Karl Frauhammer, Willy Braun
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Publication number: 20110253404Abstract: A hand-held power tool, has a main element having a tool axis, a center of gravity, and a normal axis which extends perpendicular to the tool axis and through the center of gravity, and the tool axis and the normal axis define a plane of motion, a handle supported in the plane of motion such that it is movable relative to the main element, a spring unit connecting the handle with the main element, the spring unit including a spring element and is provided to at least substantially define a trajectory of at least one portion of the handle in the plane of motion under an influence of a load force which is triggered when the handle is moved out of a neutral position and approaches the main element which is stationary, the handle having a handle body, a rotary element which connects the handle body and the main element and in interaction with the spring unit defines a joint-free rotation axis about which the handle rotates in the plane of motion when a motion takes place relative to the main element, and whereinType: ApplicationFiled: June 28, 2011Publication date: October 20, 2011Inventors: Axel Kuhnle, Karl Frauhammer, Willy Braun
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Publication number: 20110139477Abstract: The invention is based on a handheld power tool, having at least one vibration-cancelling device that has at least one cancellation spring and one cancellation mass. It is proposed that the cancellation mass is constructed of at least one first mass part and at least one second mass part.Type: ApplicationFiled: December 2, 2010Publication date: June 16, 2011Inventors: Axel KUHNLE, Matthias Tauber, Juergen Bochert, Carsten Diem, Willy Braun, Christian Wiedemann, Joerg Kaiser, Patrick Heinen, Roger Hahn, Thomas Speda
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Patent number: 7886839Abstract: The hand-held power tool has a vibration-damped main handle. The hand-held power tool has a device for fastening the main handle to a main element configured so that when the main element moves out of a stationary position toward the main handle the main element swivels around at least one swivel axis so that it is guided along a trajectory that extends with a slant of at least 10° relative to a flat surface, which extends through a longitudinal tool axis and which has a surface normal oriented in a normal direction perpendicular to the longitudinal tool axis. As a result vibrations with a movement component perpendicular to the longitudinal tool axis are damped as well as vibrations that induce motion of the main element in the direction of the longitudinal tool axis toward the main handle.Type: GrantFiled: August 12, 2009Date of Patent: February 15, 2011Assignee: Robert Bosch GmbHInventors: Karl Frauhammer, Gerhard Meixner, Heiko Roehm, Willy Braun, Axel Kuhnle, Andreas Strasser, Ralph Dammertz, Joachim Schadow, Christian Koepf, Juergen Lennartz
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Patent number: 7876004Abstract: The invention is based on an electrical power tool with an electrical machine, having a motor housing that receives the electrical machine and having a rotatable brush plate for reversing a direction of rotation of the electrical machine. The brush plate is covered in its cross section by a pivotable cover.Type: GrantFiled: May 19, 2008Date of Patent: January 25, 2011Assignee: Robert Bosch GmbHInventors: Axel Kuhnle, Willy Braun
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Publication number: 20100084151Abstract: The invention relates to an electric device, and in particular to an electric hand-held machine tool, having a housing, a rotatable actuating element arranged outside the housing and a functional switch element, arranged inside the housing and connected to the actuating element in a rotationally fixed manner. According top the invention, it is provided that the actuating element and the functional switch element are locked together through an opening in the housing.Type: ApplicationFiled: October 17, 2007Publication date: April 8, 2010Inventors: Axel Kuhnle, Willy Braun
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Patent number: D687279Type: GrantFiled: October 28, 2011Date of Patent: August 6, 2013Assignee: Robert Bosch GmbHInventors: Axel Kuhnle, Carsten Diem, Hans-Peter Aglassinger, Patrick Heinen