Patents by Inventor Christopher S. Bullington

Christopher S. Bullington 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: 20240243598
    Abstract: A method of switching between groups of battery packs for supplying power to a power tool includes connecting a first group of battery packs and a second group of battery packs to a battery pack interface, discharging the first group to supply power to the power tool, and determining, using an electronic controller, a first condition of the first group. The method also includes discharging the second group to supply power to the power tool based on the first condition, determining, via the electronic controller, a second condition of the second group, determining, via the electronic controller, whether the first group has reached end of discharge, and discharging, in response to determining that the first group has not reached end of discharge, the first group based on the second condition.
    Type: Application
    Filed: January 2, 2024
    Publication date: July 18, 2024
    Inventors: Samuel Golding, Connor E. Gulliksen, Shannon C. Bartlett, John L. Whealon, Drake J. Schlosser, Christopher S. Bullington, Benjamin Gordon, Mitchell E. Carpenter, John C. Butera
  • Publication number: 20230049667
    Abstract: A battery powered lawnmower having a blade motor coupled to at least one blade, a user input device configured to receive a blade motor control signal and a bail control bar. The bail control bar is coupled to a position sensor configured to determine a position of the bail control bar. The battery powered lawnmower further includes a controller coupled to the position sensor and configured to control an operation of the blade motor. The controller is configured to receive a blade motor control command and determine a position of the bail control bar based on data provided by the position sensor. The controller is further configured to, in response to determining that the bail control bar is in a closed position, control the blade motor based on the received blade motor control command.
    Type: Application
    Filed: August 10, 2022
    Publication date: February 16, 2023
    Inventors: Daniel R. Ertl, Caleb N. Hille, Tyler L. Graham, Christopher S. Bullington
  • Publication number: 20230051663
    Abstract: A walk-behind lawnmower includes a housing including a metal chassis, a handle coupled to the housing by support beams, a battery pack interface configured to receive a battery pack, a motor housed within the housing, a plurality of wheels attached to the housing, one or more cutting blades configured to be driven by the motor, and a skirt coupled to the metal chassis of the housing. The skirt is configured to provide a conductive path to discharge an electrostatic charge accumulated on the metal chassis.
    Type: Application
    Filed: August 10, 2022
    Publication date: February 16, 2023
    Inventors: Maxwell A. Casper, Shane McCue, Daniel R. Ertl, Caleb N. Hille, Adam A. Ostrowski, Benjamin F. Shaske, Tyler L. Graham, Christopher S. Bullington