Patents by Inventor Timothy R. Obermann

Timothy R. Obermann 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: 20210234481
    Abstract: Method and power tool for braking a motor of the power tool. One embodiment provides a method for braking a motor of a power tool. The method includes operating, using a motor controller of the power tool, the motor in accordance with a user input. The method also includes detecting, using the motor controller, a braking event of the power tool and connecting, using a braking switch, a motor braking coil to the motor to brake the motor in response to detecting the braking event of the power tool. The method further includes cooling, using a component of the motor, the motor braking coil.
    Type: Application
    Filed: April 24, 2020
    Publication date: July 29, 2021
    Inventors: Keith Boulanger, Timothy R. Obermann
  • Publication number: 20210229255
    Abstract: Methods and power tools for sensorless motor control. One embodiment provides a method for automatic control switching for driving a sensorless motor (150) of a power tool (100). The method includes determining, using a motor controller (224), a first load point based on user inputs (232) and determining, using the motor controller (224), a first motor control technique corresponding to the first load point. The method also includes driving the motor (150) based on the first motor control technique. The method further includes determining, using the motor controller (224), a change from the first load point to a second load point and determining, using the motor controller (224), a second motor control technique corresponding to the second load point. The method includes driving the motor (150) based on the second motor control technique.
    Type: Application
    Filed: April 15, 2020
    Publication date: July 29, 2021
    Inventors: Timothy R. Obermann, Douglas R. Fieldbinder, Alex Huber
  • Publication number: 20210229258
    Abstract: Kickback control methods for power tools. One power tool includes a movement sensor configured to measure an angular velocity of the housing of the power tool about the rotational axis. The power tool includes an electronic processor coupled to the switching network and the movement sensor and configured to implement kickback control of the power tool. To implement the kickback control, the electronic processor is configured to control the switching network to drive the brushless DC motor, receive measurements of the angular velocity of the housing of the power tool from the movement sensor, determine that a plurality of the measurements of the angular velocity of the housing of the power tool exceed a rotation speed threshold, and control the switching network to cease driving of the brushless DC motor in response to determining that the plurality of the measurements of the angular velocity exceed the rotation speed threshold.
    Type: Application
    Filed: April 15, 2021
    Publication date: July 29, 2021
    Inventors: Jonathan E. Abbott, Timothy R. Obermann, John S. Dey, IV, Benjamin R. Suhr, Richard A. Ryer, Maxwell L. Merget, Douglas R. Fieldbinder
  • Patent number: 11075594
    Abstract: A power tool includes a three-phase DC motor, a power switching network, a power source, and an electronic processor. A first phase of the motor is connected between a first low side electronic switch and a power source electronic switch, and connected to the power source via a first high side electronic switch in parallel with a diode. The electronic processor is configured to receive an indication to stop the motor during operation of the motor and activate the first low side electronic switch and a second low side electronic switch for a first predetermined time responsive to receiving the indication such that a back-electromagnetic force generated by the motor is stored in the first phase. The electronic processor is configured to deactivate the second low side electronic switch after the first predetermined time such that a first regenerative current is provided to the power source via the diode.
    Type: Grant
    Filed: June 9, 2020
    Date of Patent: July 27, 2021
    Assignee: Milwaukee Electric Tool Corporation
    Inventors: Carl B. Westerby, Timothy R. Obermann, Alex Huber
  • Publication number: 20210223760
    Abstract: A programmable power tool and method and systems of programming a power tool using wireless communication. An external device having a processor and a transceiver establishes a communication link with the power tool. The external device receives, with the transceiver, a first mode profile stored on the power tool. The first mode profile is defined by a profile type and a first value associated with a parameter for executing the profile type. The external device displays a control screen including the profile type and the parameter at the first value, and receives a user input. The external device generates, in response to the user input, a second mode profile by modifying the parameter to be at a second value. The external device transmits, with the transceiver, the second mode profile to the power tool.
    Type: Application
    Filed: April 1, 2021
    Publication date: July 22, 2021
    Inventors: John S. Dey, IV, Alex Huber, Matthew J. Mergener, Burtrom L. Stampfl, Stephen Matson, Timothy R. Obermann
  • Publication number: 20210213553
    Abstract: A portable welder that includes a portable housing, a ground clamp, an electrode holder, a user interface, and a battery pack interface. The ground clamp is connected to the portable housing through a ground cable and is configured to be connected to a metal workpiece. The electrode holder is connected to the portable housing through an electrode cable. The electrode holder includes a mount connected to the electrode cable and a user input. The mount is configured to hold a consumable electrode. The user input is configured to activate the portable welder. The user interface located on the housing. The battery pack interface is configured to receive a removable and rechargeable battery pack.
    Type: Application
    Filed: January 13, 2021
    Publication date: July 15, 2021
    Inventors: Woodrow W. Walker, Andrew D. Van Hoorn, Matthew Doyle, Timothy J. Bartlett, Timothy R. Obermann, Steven C. Zbrozek
  • Publication number: 20210140130
    Abstract: Bi-directional motor (36) for gas engine replacement device (10). One embodiment provides a gas engine replacement device (10) including a housing (14), a battery receptacle (54), a motor (36), a power take-off shaft (38) receiving torque from the motor (36), a power switching network (310) configured to selectively provide power to the motor (36), and an electronic processor (302) coupled to the power switching network (310). The electronic processor (302) is configured to rotate the motor (36) in a first direction and receive an input to switch a rotation direction of the motor (36). The electronic processor is also configured to control the power switching network (310) to stop the motor (36) and rotate the motor (36) in a second direction after controlling the power switching network (310) to stop the motor (36).
    Type: Application
    Filed: November 6, 2020
    Publication date: May 13, 2021
    Inventors: Patrick D. Gallagher, Timothy J. Bartlett, Timothy R. Obermann, Alexander Huber, Connor P. Sprague, Evan M. Glanzer, John E. Koller
  • Publication number: 20210143375
    Abstract: A gas engine replacement device includes a housing, a battery receptacle coupled to the housing to receive a battery pack, a motor within the housing, a power take-off shaft receiving torque from the motor and protruding from a side of the housing, a power switching network configured to provide power from the battery pack to the motor, and an electronic processor coupled to the power switching network and configured to control the power switching network to rotate the motor and to receive a command speed, determine whether the command speed is in an exclusion zone, set an output speed at the command speed responsive to the command speed being outside the exclusion zone, set the output speed to a speed outside the exclusion zone responsive to the command speed being in the exclusion zone, and control the power switching network to rotate the motor in accordance with the output speed.
    Type: Application
    Filed: November 6, 2020
    Publication date: May 13, 2021
    Inventors: Timothy R. Obermann, David W. Siegler, Alexander Huber, William F. Chapman, III, Patrick D. Gallagher, Timothy J. Bartlett
  • Publication number: 20210122024
    Abstract: An electronic power tool device includes an electronic processor, a communication interface in communication with the electronic processor, and a wake-up sensor configured to generate a wake signal for activating the communication interface and the electronic processor responsive to a stimulus. The communication interface is configured to receive a first electronic message that includes an activation state and transmit the first received electronic message to the electronic processor. The electronic processor is configured to control the activation state of the electronic power tool device to allow or prevent operation of the electronic power tool device based on the first received electronic message.
    Type: Application
    Filed: December 18, 2020
    Publication date: April 29, 2021
    Inventors: Timothy R. Obermann, Anthony M. Davis
  • Patent number: 10981267
    Abstract: Kickback control methods for power tools. One power tool includes a movement sensor configured to measure an angular velocity of the housing of the power tool about the rotational axis. The power tool includes an electronic processor coupled to the switching network and the movement sensor and configured to implement kickback control of the power tool. To implement the kickback control, the electronic processor is configured to control the switching network to drive the brushless DC motor, receive measurements of the angular velocity of the housing of the power tool from the movement sensor, determine that a plurality of the measurements of the angular velocity of the housing of the power tool exceed a rotation speed threshold, and control the switching network to cease driving of the brushless DC motor in response to determining that the plurality of the measurements of the angular velocity exceed the rotation speed threshold.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: April 20, 2021
    Assignee: Milwaukee Electric Tool Corporation
    Inventors: Jonathan E. Abbott, Timothy R. Obermann, John S. Dey, IV, Benjamin R. Suhr, Richard A. Ryer, Maxwell L. Merget, Douglas R. Fieldbinder
  • Patent number: 10976726
    Abstract: A programmable power tool and method and systems of programming a power tool using wireless communication. An external device having a processor and a transceiver establishes a communication link with the power tool. The external device receives, with the transceiver, a first mode profile stored on the power tool. The first mode profile is defined by a profile type and a first value associated with a parameter for executing the profile type. The external device displays a control screen including the profile type and the parameter at the first value, and receives a user input. The external device generates, in response to the user input, a second mode profile by modifying the parameter to be at a second value. The external device transmits, with the transceiver, the second mode profile to the power tool.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: April 13, 2021
    Assignee: Milwaukee Electric Tool Corporation
    Inventors: John S. Dey, IV, Alex Huber, Matthew J. Mergener, Burtrom L. Stampfl, Stephen Matson, Timothy R. Obermann
  • Publication number: 20210091687
    Abstract: Apparatus and method for motor braking using selectively connectable resistance. The method includes controlling, using a motor controller of the power tool, a power switching network to drive a motor of the power tool in response to actuation of a user input and determining, using the motor controller, a variable tool characteristic. The method further includes determining, using the motor controller, that the user input is de-actuated. The method also includes controlling, using the motor controller, the power switching network to brake the motor when the variable tool characteristic satisfies the tool characteristic threshold and controlling, using the motor controller, a braking circuit to brake the motor when the variable tool characteristic does not satisfy the tool characteristic threshold. The braking circuit includes one or more resistive loads and is selectively coupled to the motor terminals of the motor.
    Type: Application
    Filed: June 5, 2020
    Publication date: March 25, 2021
    Inventors: Timothy R. OBERMANN, Alex HUBER
  • Publication number: 20210001503
    Abstract: An example system includes a cutting tool and a device configured to remotely control the cutting tool. In response to receiving information indicative of actuation of a first user interface item, the device sends a first signal to the cutting tool so as to request enabling the cutting tool to be operated remotely. The cutting tool sends a second signal to the device indicating that remote operation of the cutting tool has been enabled. The cutting tool receives information indicating that the trigger has been activated, and sends a third signal to the device indicating that the cutting tool is ready to perform a cutting operation. The device receives information indicative of actuation of a second user interface item, and responsively, sends a fourth signal to the cutting tool so as to cause the cutting tool to perform the cutting operation.
    Type: Application
    Filed: September 17, 2020
    Publication date: January 7, 2021
    Inventors: Luke J. Skinner, Burtrom L. Stampfl, Timothy J. Bartlett, Carter H. Ypma, Timothy R. Obermann, Benjamin O. Cabot, Kris J. Kanack, Thomas C. Hanks, Ian C. Zimmermann
  • Publication number: 20200376645
    Abstract: Power tool devices described herein include a motor, an actuator configured to be actuated by a user, a plurality of power switching elements configured to drive the motor, a gate driver coupled to the plurality of power switching elements and configured to control the plurality of power switching elements, a first printed circuit board (PCB), an antenna, and a combined chip. The combined chip is located on the first PCB and is coupled to the actuator, the antenna, and the gate driver. The combined chip includes a memory and an electronic processor configured to determine that the actuator has been actuated, and provide, in response to determining that the actuator has been actuated, a signal to the gate driver, control the signal based on the motor position information, wirelessly transmit power tool device information to an external device, and wirelessly receive configuration information from the external device via the antenna.
    Type: Application
    Filed: May 20, 2020
    Publication date: December 3, 2020
    Inventors: Anthony Davis, Alex Huber, Timothy R. Obermann
  • Publication number: 20200371498
    Abstract: A programmable power tool and method and systems of programming a power tool using wireless communication. An external device having a processor and a transceiver establishes a communication link with the power tool. The external device receives, with the transceiver, a first mode profile stored on the power tool. The first mode profile is defined by a profile type and a first value associated with a parameter for executing the profile type. The external device displays a control screen including the profile type and the parameter at the first value, and receives a user input. The external device generates, in response to the user input, a second mode profile by modifying the parameter to be at a second value. The external device transmits, with the transceiver, the second mode profile to the power tool.
    Type: Application
    Filed: August 14, 2020
    Publication date: November 26, 2020
    Inventors: John S. Dey, IV, Alex Huber, Matthew J. Mergener, Burtrom L. Stampfl, Stephen Matson, Timothy R. Obermann
  • Patent number: 10838407
    Abstract: A programmable power tool and method and systems of programming a power tool using wireless communication. An external device having a processor and a transceiver establishes a communication link with the power tool. The external device receives, with the transceiver, a first mode profile stored on the power tool. The first mode profile is defined by a profile type and a first value associated with a parameter for executing the profile type. The external device displays a control screen including the profile type and the parameter at the first value, and receives a user input. The external device generates, in response to the user input, a second mode profile by modifying the parameter to be at a second value. The external device transmits, with the transceiver, the second mode profile to the power tool.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: November 17, 2020
    Assignee: Milwaukee Electric Tool Corporation
    Inventors: John S. Dey, IV, Alex Huber, Matthew J. Mergener, Burtrom L. Stampfl, Stephen Matson, Timothy R. Obermann
  • Patent number: 10792832
    Abstract: An example system includes a cutting tool and a device configured to remotely control the cutting tool. In response to receiving information indicative of actuation of a first user interface item, the device sends a first signal to the cutting tool so as to request enabling the cutting tool to be operated remotely. The cutting tool sends a second signal to the device indicating that remote operation of the cutting tool has been enabled. The cutting tool receives information indicating that the trigger has been activated, and sends a third signal to the device indicating that the cutting tool is ready to perform a cutting operation. The device receives information indicative of actuation of a second user interface item, and responsively, sends a fourth signal to the cutting tool so as to cause the cutting tool to perform the cutting operation.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: October 6, 2020
    Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
    Inventors: Luke J. Skinner, Burtrom L. Stampfl, Timothy J. Bartlett, Carter H. Ypma, Timothy R. Obermann, Benjamin O. Cabot, Kris J. Kanack, Thomas C. Hanks, Ian C. Zimmermann
  • Publication number: 20200304043
    Abstract: A power tool includes a three-phase DC motor, a power switching network, a power source, and an electronic processor. A first phase of the motor is connected between a first low side electronic switch and a power source electronic switch, and connected to the power source via a first high side electronic switch in parallel with a diode. The electronic processor is configured to receive an indication to stop the motor during operation of the motor and activate the first low side electronic switch and a second low side electronic switch for a first predetermined time responsive to receiving the indication such that a back-electromagnetic force generated by the motor is stored in the first phase. The electronic processor is configured to deactivate the second low side electronic switch after the first predetermined time such that a first regenerative current is provided to the power source via the diode.
    Type: Application
    Filed: June 9, 2020
    Publication date: September 24, 2020
    Inventors: Carl B. Westerby, Timothy R. Obermann, Alex Huber
  • Patent number: 10720860
    Abstract: A power tool including a three-phase DC motor, a power switching network, a power source, and an electronic processor. A first phase of the motor is connected between a first high side electronic switch and a first low side electronic switch, and between a second high side electronic switch and a second low side electronic switch. The first high side electronic switch is parallel to the second high side electronic switch, and the first low side electronic switch is parallel to the second low side electronic switch. The electronic processor receives an indication to stop the motor, and deactivates the first high side electronic switch and the first low side electronic switch, and activates the second high side electronic switch and the second low side electronic switch such that the back-electromagnetic force generated by the motor is connected in a second polarity relative to the power source.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: July 21, 2020
    Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
    Inventors: Carl B. Westerby, Timothy R. Obermann, Alex Huber
  • Publication number: 20200194735
    Abstract: A power adapter assembly and an electrical system. The power adapter assembly is operable to supply power to an electrical device. The power adapter assembly includes a power box including a housing, an electrical circuit supported by the housing, the electrical circuit being operable to receive as input AC power and to output DC power, an adapter controller operable to control the adapter assembly; and an adapter electrically connected to the power box, the adapter including an adapter engagement portion connectable to a device engagement portion to connect the adapter to the electrical device, DC power being output from the electrical circuit through the adapter to the electrical device to power the load, when the adapter engagement portion is connected to the device engagement portion, a communication interface between the adapter assembly and the electrical device being active even when power is not being output to power the load.
    Type: Application
    Filed: December 12, 2019
    Publication date: June 18, 2020
    Inventors: Dean W. NOWALIS, Gary Lee MCMURRAY, Brian ALVES, Timothy R. OBERMANN, Benjamin C. TESCH, DanJun GUO, HuaLiang LAI