Patents by Inventor Joachim Hecht
Joachim Hecht 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: 11333237Abstract: A handheld tool device having at least one first gear housing, having at least one second gear housing, and having a bracket holder unit provided for connecting the two gear housings. It is provided that in the assembled state the bracket holder unit is situated at least in an area of contact of the gear housings in an opening of at least one of the gear housings.Type: GrantFiled: July 14, 2020Date of Patent: May 17, 2022Assignee: Robert Bosch GmbHInventors: Joachim Hecht, Heiko Roehm
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Patent number: 11020844Abstract: In a hand-held power tool including a gear for driving an output shaft, which is situated in an assigned gear housing, and including a mode-setting unit for setting the operating mode for an impact drilling mode, a drilling mode, or a screwing mode, the mode-setting unit including a rotatable actuating element and a rotatable setting element coupled to the rotatable actuating element. The setting element is coupled, at least in one operating mode, to a transmission element which is mounted on the gear housing and is axially displaceable on the gear housing in a screwing position assigned to the screwing mode and is axially fixed on the gear housing in impact drilling and drilling positions assigned to the impact drilling and drilling modes. The actuating element and the setting element are formed as one piece from plastic.Type: GrantFiled: October 11, 2017Date of Patent: June 1, 2021Assignee: ROBERT BOSCH GMBHInventor: Joachim Hecht
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Publication number: 20200340572Abstract: A handheld tool device having at least one first gear housing, having at least one second gear housing, and having a bracket holder unit provided for connecting the two gear housings. It is provided that in the assembled state the bracket holder unit is situated at least in an area of contact of the gear housings in an opening of at least one of the gear housings.Type: ApplicationFiled: July 14, 2020Publication date: October 29, 2020Inventors: Joachim HECHT, Heiko Roehm
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Patent number: 10746277Abstract: A handheld tool device having at least one first gear housing, having at least one second gear housing, and having a bracket holder unit provided for connecting the two gear housings. It is provided that in the assembled state the bracket holder unit is situated at least in an area of contact of the gear housings in an opening of at least one of the gear housings.Type: GrantFiled: December 14, 2015Date of Patent: August 18, 2020Assignee: Robert Bosch GmbHInventors: Joachim Hecht, Heiko Roehm
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Patent number: 10682752Abstract: A handheld power tool includes a torque coupling adjustable by the operator, as well as a gear unit for transmitting a torque generated by a drive motor to a drive shaft. The gear unit is advantageously a planetary gear unit; the torque coupling being constructed in such a manner, that in response to slippage of the torque coupling, a coupling component follows a displacement path. The handheld power tool further includes a control unit and a sensor, the sensor monitoring the coupling component for a displacement and transmitting corresponding sensor signals to the control unit. The control unit is configured to control, in particular, switch off, the drive motor as a function of the sensor signals received. It is further provided that the control unit subject the received sensor signals to a plausibility check, in order to determine if actual slippage of the torque coupling is occurring.Type: GrantFiled: October 14, 2016Date of Patent: June 16, 2020Assignee: Robert Bosch GmbHInventors: Joachim Hecht, Michael Hopp
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Patent number: 10478960Abstract: In a handheld machine tool having a tool housing, in which a drive motor is situated for driving a drive element equipped with at least one clamping surface, to which a spindle-locking device equipped with a blocking element and at least one spindle cylinder is assigned, the at least one spindle cylinder being able to be clamped in a spindle-lock operation of the spindle-locking device between the at least one clamping surface and the blocking element to prevent the drive element from rotating relative to the tool housing, wherein a positioning element associated with the spindle locking device is situated at least in sections on the at least one clamping surface, the positioning element being situated at least partially in the region between the at least one spindle cylinder and the at least one clamping surface.Type: GrantFiled: June 25, 2014Date of Patent: November 19, 2019Assignee: Robert Bosch GmbHInventors: Joachim Hecht, Marco Braun, Heiko Roehm, Stefan Mock
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Patent number: 10183391Abstract: A hand-held power tool, in particular an impact drill driver, has a gearbox assemblage, a hammer impact mechanism, and a tool spindle. The hammer impact mechanism includes a striker that at least partly surrounds the tool spindle in at least one plane.Type: GrantFiled: January 12, 2016Date of Patent: January 22, 2019Assignee: ROBERT BOSCH GMBHInventors: Joachim Hecht, Heiko Roehm, Tobias Herr
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Patent number: 10137546Abstract: A switchable gear drive for a handheld power tool has two gears which are to be engaged via an adjustable switching member, the switching member being in a locked position with a retaining ring which is fixedly held on a housing in a first gear and being in an unlocked position with the retaining ring in a second gear. Furthermore, a spindle for accommodating a tool is drivable by an axially spring-loaded gear wheel supported in the housing, the gear wheel being axially supported on the retaining ring on the side diametrically opposed to the switching member. The retaining ring is designed as a circumferential, closed ring.Type: GrantFiled: August 24, 2012Date of Patent: November 27, 2018Assignee: ROBERT BOSCH GMBHInventors: Joachim Hecht, Martin Kraus
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Patent number: 10086507Abstract: A hand-held machine tool device, in particular, for a screwdriver (12a-h), having a locking device (14a-h) for locking a power take-off unit (16a-h), and having a rotational bearing device (18a-h) of the power take-off unit (16a-h). It is provided that at least part of the locking device (14a-h) and the rotational bearing device (18a-h) be formed in one piece.Type: GrantFiled: December 17, 2015Date of Patent: October 2, 2018Assignee: ROBERT BOSCH GMBHInventors: Joachim Hecht, Heiko Roehm, Martin Kraus
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Publication number: 20180272516Abstract: A handheld power tool includes a torque coupling adjustable by the operator, as well as a gear unit for transmitting a torque generated by a drive motor to a drive shaft. The gear unit is advantageously a planetary gear unit; the torque coupling being constructed in such a manner, that in response to slippage of the torque coupling, a coupling component follows a displacement path. The handheld power tool further includes a control unit and a sensor, the sensor monitoring the coupling component for a displacement and transmitting corresponding sensor signals to the control unit. The control unit is configured to control, in particular, switch off, the drive motor as a function of the sensor signals received. It is further provided that the control unit subject the received sensor signals to a plausibility check, in order to determine if actual slippage of the torque coupling is occurring.Type: ApplicationFiled: October 14, 2016Publication date: September 27, 2018Inventors: Joachim Hecht, Michael Hopp
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Patent number: 9999930Abstract: In a hand-held machine tool, having a tool holder for holding at least one first tool, which has a tang having a first coupling contour that is able to be connected to the tool holder and having a striking mechanism for the striking drive of the first tool connected to the tool holder in the axial direction of the tool holder in a striking operation associated with the hand-held machine tool, a chuck adapter is provided to hold at least one second tool, which has a tang provided with a second coupling contour, which is able to be connected to the chuck adapter in a torsionally fixed manner.Type: GrantFiled: May 19, 2011Date of Patent: June 19, 2018Assignee: ROBERT BOSCH GMBHInventors: Joachim Hecht, Martin Kraus
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Publication number: 20180133879Abstract: In a hand-held power tool including a gear for driving an output shaft, which is situated in an assigned gear housing, and including a mode-setting unit for setting the operating mode for an impact drilling mode, a drilling mode, or a screwing mode, the mode-setting unit including a rotatable actuating element and a rotatable setting element coupled to the rotatable actuating element. The setting element is coupled, at least in one operating mode, to a transmission element which is mounted on the gear housing and is axially displaceable on the gear housing in a screwing position assigned to the screwing mode and is axially fixed on the gear housing in impact drilling and drilling positions assigned to the impact drilling and drilling modes. The actuating element and the setting element are formed as one piece from plastic.Type: ApplicationFiled: October 11, 2017Publication date: May 17, 2018Inventor: Joachim Hecht
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Patent number: 9878434Abstract: A power drill having percussion drilling function, drilling function and screwing function has a gearing for transmitting the drive motion of a drive unit to a tool spindle. Furthermore, two latching elements are provided which, in the percussion drilling function, are in latching engagement and in the drilling or screwing position are in the disengaged state. A mode setting device has a rotatable supporting ring and a thrust ring, coupled to the supporting ring in a torsionally fixed manner which, in the screwing position is held on the gear housing in an axially displaceable manner.Type: GrantFiled: September 28, 2011Date of Patent: January 30, 2018Assignee: ROBERT BOSCH GMBHInventors: Joachim Hecht, Martin Kraus
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Patent number: 9849574Abstract: A hand-held power tool having hammer-drilling, drilling and screwing modes, including a mode-setting device having an actuating element, a setting element, and a gear unit for driving an output shaft, in which the actuating and setting elements are interconnected in a rotatably fixed manner, and, in an operating mode(s), the setting element is coupled to a transmission element supported at a coupling housing assigned to the gear unit and axially displaceable at the coupling housing in a screwing position associated with the screwing mode and is axially fixed in position at the coupling housing in hammer-drilling and drilling positions of the corresponding modes; the transmission element is connected to the coupling housing in a rotatably fixed manner, a predefined operating mode being settable by rotating the setting element; the setting and transmission elements being rotatable relative to one another, the setting element embracing at least sections of the transmission element.Type: GrantFiled: November 29, 2011Date of Patent: December 26, 2017Assignee: ROBERT BOSCH GMBHInventors: Joachim Hecht, Heiko Roehm, Martin Kraus
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Patent number: 9808868Abstract: A hand-held power tool is provided which includes a clutch housing of a torque clutch, and a planetary gear, situated in a gear housing, for transmitting a torque which is generated by a drive motor to a drive shaft. The clutch housing cooperates with the planetary gear via a pressure plate. The pressure plate is displaced in the axial direction in order to disengage the torque clutch. The axial relative motion of the pressure plate causes an axial relative motion between a switching element and an associated optical sensor, via which the drive motor may be switched off.Type: GrantFiled: October 24, 2014Date of Patent: November 7, 2017Assignee: ROBERT BOSCH GMBHInventors: Martin Kraus, Heiko Roehm, Joachim Hecht
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Patent number: 9776316Abstract: A power tool, in particular a hand-held power tool, preferably embodied as a cordless screwdriver, is equipped with a torque limiting unit in which the release torque is settable by way of a locking brace that is equipped with a spring brace for locking elements that abut axially against parts of a planetary drive, in particular the ring gear thereof or the planet carrier thereof as a last gear stage, the spring elements of the spring brace and the locking elements being located with a radial offset from one another.Type: GrantFiled: April 8, 2015Date of Patent: October 3, 2017Assignee: ROBERT BOSCH GMBHInventors: Joachim Hecht, Heiko Roehm, Martin Kraus
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Patent number: 9724816Abstract: In a handheld electric tool having a tool housing in which is disposed a gearbox for transferring a torque, generated by a drive motor, to a drive spindle with which a spindle locking apparatus is associated, the drive spindle being rotatably mounted in the tool housing at at least two bearing points, the at least two bearing points are provided in the tool housing in a region downstream from the gearbox, and the spindle locking apparatus is disposed between the two bearing points in an axial direction of the drive spindle.Type: GrantFiled: September 28, 2011Date of Patent: August 8, 2017Assignee: ROBERT BOSCH GmbHInventors: Joachim Hecht, Martin Kraus
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Patent number: 9649757Abstract: A hammer mechanism has a clamping chuck and a snap die provided for the direct striking of an inserted tool. The snap die includes a coupling element for transmitting a rotary motion to the clamping chuck.Type: GrantFiled: October 14, 2011Date of Patent: May 16, 2017Assignee: Robert Bosch GMBHInventors: Joachim Hecht, Heiko Roehm, Martin Kraus
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Patent number: 9636814Abstract: A hammer mechanism having at least one impact-generation unit and a clamping chuck drive shaft is provided. The impact-generation unit includes a spur-gear transmission stage for translating a rotational speed of the clamping chuck drive shaft into a higher rotational speed for impact generation.Type: GrantFiled: October 14, 2011Date of Patent: May 2, 2017Assignee: Robert Bosch GMBHInventors: Joachim Hecht, Martin Kraus
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Patent number: 9481081Abstract: The invention relates to a machine tool having working field illumination disposed in a housing-having an illumination mechanism and a transparent element which allows the light from the illumination mechanism to be led out toward the working field. A light beam can be deflected between the illumination mechanism and the transparent element. According to the invention, the transparent element forms a region of the housing.Type: GrantFiled: January 23, 2013Date of Patent: November 1, 2016Assignee: ROBERT BOSCH GMBHInventors: Joachim Hecht, Jens Brennenstuhl, Heiko Roehm