Patents by Inventor Mitchell E. Carpenter

Mitchell E. Carpenter 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).

  • STRING TRIMMER
    Publication number: 20210392812
    Abstract: A string trimmer includes a handle unit including a handle unit housing that defines a grip portion and a battery receptacle. The string trimmer also includes a head unit including a head unit housing, an electric motor, and a rotatable trimmer head. The string trimmer further includes a shaft assembly coupling the handle unit to the head unit. The string trimmer also includes a circuit board assembly supported within the head unit housing. The circuit board assembly includes a heat sink and a circuit board that comprises a controller configured to control the electric motor.
    Type: Application
    Filed: June 18, 2021
    Publication date: December 23, 2021
    Inventors: Hugh A. Dales, Mitchell E. Carpenter