Patents by Inventor Markus Forstner
Markus Forstner 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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Publication number: 20240009824Abstract: A hand-held power tool, including: a drive circuit for providing an adjustment signal as a function of actuation of a button, a control apparatus for adjusting a drive current for an electric motor of the hand-held power tool as a function of the adjustment signal, wherein the control apparatus is connected to an electrical energy source for operating the hand-held power tool via a first electrical line arrangement, the drive circuit is connected to the control apparatus via a second electrical line arrangement, a drive current line carrying the drive current for the electric motor is routed via an interruption switch, coupled to the button, for interrupting the drive current, and wherein an interference-suppression capacitor is connected to the drive power line via a first node and to the second electrical line arrangement via a second node.Type: ApplicationFiled: November 9, 2021Publication date: January 11, 2024Inventors: Markus FORSTNER, Georg BRAML, Stefan RINGLER
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Patent number: 11355789Abstract: Rechargeable battery for a machine tool containing at least one energy storage cell and also one switching apparatus. The rechargeable battery contains a bypass circuit which can be operated in a first and second mode, wherein the bypass circuit is in an inoperative state in the first mode, so that an electric current with a first current value passes from the at least one energy storage cell to the machine tool via the switching apparatus, and wherein the bypass circuit is in an operating state in the second mode, so that an electric current with a second current value passes from the at least one energy storage cell to the machine tool via the bypass apparatus, and wherein the first current value is greater than the second current value.Type: GrantFiled: July 23, 2018Date of Patent: June 7, 2022Assignee: Hilti AktiengesellschaftInventors: Klaus Hauser, Michael Candussio, Stefan Mayer, David Koscheck, Markus Forstner
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Publication number: 20200212506Abstract: Rechargeable battery for a machine tool containing at least one energy storage cell and also one switching apparatus. The rechargeable battery contains a bypass circuit which can be operated in a first and second mode, wherein the bypass circuit is in an inoperative state in the first mode, so that an electric current with a first current value passes from the at least one energy storage cell to the machine tool via the switching apparatus, and wherein the bypass circuit is in an operating state in the second mode, so that an electric current with a second current value passes from the at least one energy storage cell to the machine tool via the bypass apparatus, and wherein the first current value is greater than the second current value.Type: ApplicationFiled: July 23, 2018Publication date: July 2, 2020Inventors: Klaus HAUSER, Michael CANDUSSIO, Stefan MAYER, David KOSCHECK, Markus FORSTNER
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Patent number: 10691994Abstract: An electric handheld power tool, including a data memory and a data interface signal-connected to the data memory, via which tool-related data may be read out from the data memory with the aid of a terminal, the data interface including a system antenna for wireless radio data transmission, and the electric handheld power tool including an amplifier antenna which is different from the system antenna, the amplifier antenna being magnetically coupled with the system antenna and preferably mounted on or in the direct vicinity of the system antenna.Type: GrantFiled: March 7, 2017Date of Patent: June 23, 2020Assignee: Hilti AktiengesellschaftInventors: Holger Cecchin, Markus Forstner, Michael Fuchs, Josip Matanovic
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Patent number: 10413974Abstract: A method to control a power tool (1), especially a handheld core drilling machine, includes a drive (10) to drive a tool (30) and a control unit (40) for when a workpiece (W) is being processed. The method encompasses the following method steps: setting the rotational speed of the drive at a first value; measuring a first power consumption value for the drive; setting a threshold value for the power consumption of the drive; and increasing the rotational speed of the drive to a second value if the power consumption of the drive (10) exceeds the threshold value due to an increase in the drive load. The power tool includes a drive (10) to drive a tool (3) and a control unit (40) to control at least the rotational speed of the drive.Type: GrantFiled: August 8, 2014Date of Patent: September 17, 2019Assignee: Hilti AktiengesellschaftInventors: Oliver Koslowski, Markus Forstner, Egon Koenigbauer, Michael Fuchs, Stefan Groer
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Publication number: 20190026619Abstract: An electric handheld power tool, including a data memory and a data interface signal-connected to the data memory, via which tool-related data may be read out from the data memory with the aid of a terminal, the data interface including a system antenna for wireless radio data transmission, and the electric handheld power tool including an amplifier antenna which is different from the system antenna, the amplifier antenna being magnetically coupled with the system antenna and preferably mounted on or in the direct vicinity of the system antenna.Type: ApplicationFiled: March 7, 2017Publication date: January 24, 2019Inventors: Holger CECCHIN, Markus FORSTNER, Michael FUCHS, Josip MATANOVIC
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Patent number: 9720016Abstract: A hand-held power tool is disclosed with a measuring system for determining an effective value of an alternating voltage which is fed via an external conductor with respect to a neutral conductor. A regulated direct voltage source has a power supply potential which is referenced to the neutral conductor. There is a first resistance value from the power supply potential to a tap and a second resistance value from the tap to a ground. A voltmeter has a measurement range and its measurement input is connected to the tap. A measurement line connects the tap to the external conductor. The first resistance value is lower than the second resistance value such that the mean voltage value on the tap is equal to the mean of the measurement range for one period of the alternating voltage.Type: GrantFiled: November 26, 2013Date of Patent: August 1, 2017Assignee: Hilti AktiengesellschaftInventor: Markus Forstner
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Publication number: 20160200000Abstract: A method to control a power tool (1), especially a handheld core drilling machine, includes a drive (10) to drive a tool (30) and a control unit (40) for when a workpiece (W) is being processed. The method encompasses the following method steps: setting the rotational speed of the drive at a first value; measuring a first power consumption value for the drive; setting a threshold value for the power consumption of the drive; and increasing the rotational speed of the drive to a second value if the power consumption of the drive (10) exceeds the threshold value due to an increase in the drive load. The power tool includes a drive (10) to drive a tool (3) and a control unit (40) to control at least the rotational speed of the drive.Type: ApplicationFiled: August 8, 2014Publication date: July 14, 2016Inventors: Oliver Koslowski, Markus Forstner, Egon Koenigbauer, Michael Fuchs, Stefan Groer
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Publication number: 20160184952Abstract: A method is provided for controlling a power tool (1) when a material (W) is being worked, including the steps: the rotational speed of a drive (20) of the power tool is set to a first value; a first temperature value is measured; the first temperature value is compared to a pre-specified threshold value; the rotational speed of the drive (20) is reduced from the first value to a second value if the first temperature value exceeds the pre-specified threshold value for a pre-specified first period of time; a second temperature value is measured; the second temperature value is compared to the pre-specified threshold value; and the rotational speed of the drive (20) is raised from the second value to the first value if the second temperature value has fallen below the pre-specified threshold value for a pre-specified second period of time.Type: ApplicationFiled: August 12, 2014Publication date: June 30, 2016Inventors: Fabian Kabza, Oliver Koslowski, Egon Koenigbauer, Konrad Lieb, Markus Forstner, Torsten Asmus
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Publication number: 20150316585Abstract: The hand-held power tool according to the invention has a measuring system for determining an effective value of an alternating voltage (U), which is fed via an external conductor (L) with respect to a neutral conductor (N). A regulated direct voltage source (25) has a power supply potential (Vcc), which is referenced to the neutral conductor (N). The direct voltage source (25) adjusts the potential of a ground (23) against the power supply potential (Vcc). A voltmeter (26) is supplied with power by the direct voltage source (25). A voltage divider is suspended between the power supply potential (Vcc) and ground (23). There is a first resistance value (R1) from the power supply potential (Vcc) to a tap and there is a second resistance value (R2) from the top to ground (23). A voltmeter (26) has a measurement range (Mb) and its measurement input is connected to the top (27). A measurement line connects the tap to the external conductor (L).Type: ApplicationFiled: October 26, 2013Publication date: November 5, 2015Applicant: Hilti AktiengesellschaftInventor: Markus FORSTNER
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Publication number: 20150229256Abstract: A method to regulate the electric motor of a handheld power tool, the method encompassing the following steps: prescribing a target speed for the electric motor, varying the prescribed target speed—each time after a certain period of time has lapsed—by a value within a certain variation range in order to supply a varied target speed, and regulating an actual speed of the electric motor to the supplied varied target speed.Type: ApplicationFiled: August 21, 2013Publication date: August 13, 2015Inventors: Markus Forstner, Manfred Jakob
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Patent number: 8072116Abstract: A brush holder (10) for a motor and having a plate-shaped base body (11) having an opening (13) for passing the motor rotor (30) therethrough, at least one brush receptacle (14) in which a carbon brush (15) is displaceably received, and an electronics can (12) projecting from the plate-shaped base body (11), closed at its side (21) adjacent to an axis (A) defined by the base body opening (13), and having an inner chamber (22) in which at least a portion of components of control electronics is received.Type: GrantFiled: October 21, 2009Date of Patent: December 6, 2011Assignee: Hilti AktiengesellschaftInventors: Martin Zacher, Armin Hoffmann, Helmut Burger, Markus Forstner
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Publication number: 20100096956Abstract: A brush holder (10) for a motor and having a plate-shaped base body (11) having an opening (13) for passing the motor rotor (30) therethrough, at least one brush receptacle (14) in which a carbon brush (15) is displaceably received, and an electronics can (12) projecting from the plate-shaped base body (11), closed at its side (21) adjacent to an axis (A) defined by the base body opening (13), and having an inner chamber (22) in which at least a portion of components of control electronics is received.Type: ApplicationFiled: October 21, 2009Publication date: April 22, 2010Inventors: Martin Zacher, Armin Hoffmann, Helmut Burger, Markus Forstner