Patents by Inventor Michael Shane Grigg

Michael Shane Grigg 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).

  • Power head for powered concrete roller screed
    Patent number: 11686114
    Abstract: A power head for a powered concrete roller screed includes a handle and a driver housing at a distal end of the handle. A cordless, battery-operated driver is received in the driver housing. A head actuator includes a translatable link extending along the handle and an eccentric cam. The eccentric cam is operatively connected to the translatable link within the drive housing such that translation of the translation link imparts rotation of the eccentric cam about a rotational axis of the eccentric cam to an actuated position. The eccentric cam is adjacent a trigger of a cordless, battery-operated driver and is configured to depress the trigger when the eccentric cam is rotated about its rotational axis to the actuated position.
    Type: Grant
    Filed: August 6, 2021
    Date of Patent: June 27, 2023
    Assignee: Marshalltown Company
    Inventors: Charles H. Cowie, Michael Shane Grigg
  • POWER HEAD FOR POWERED CONCRETE ROLLER SCREED
    Publication number: 20220074216
    Abstract: A power head for a powered concrete roller screed includes a handle and a driver housing at a distal end of the handle. A cordless, battery-operated driver is received in the driver housing. A head actuator includes a translatable link extending along the handle and an eccentric cam. The eccentric cam is operatively connected to the translatable link within the drive housing such that translation of the translation link imparts rotation of the eccentric cam about a rotational axis of the eccentric cam to an actuated position. The eccentric cam is adjacent a trigger of a cordless, battery-operated driver and is configured to depress the trigger when the eccentric cam is rotated about its rotational axis to the actuated position.
    Type: Application
    Filed: August 6, 2021
    Publication date: March 10, 2022
    Inventors: Charles H. Cowie, Michael Shane Grigg
  • Power head for powered concrete roller screed
    Patent number: 11111681
    Abstract: A power head for a powered concrete roller screed includes a handle and a driver housing at a distal end of the handle. A cordless, battery-operated driver is received in the driver housing. A head actuator includes a translatable link extending along the handle and an eccentric cam. The eccentric cam is operatively connected to the translatable link within the drive housing such that translation of the translation link imparts rotation of the eccentric cam about a rotational axis of the eccentric cam to an actuated position. The eccentric cam is adjacent a trigger of a cordless, battery-operated driver and is configured to depress the trigger when the eccentric cam is rotated about its rotational axis to the actuated position.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: September 7, 2021
    Assignee: Marshalltown Company
    Inventors: Charles H. Cowie, Michael Shane Grigg
  • POWER HEAD FOR POWERED CONCRETE ROLLER SCREED
    Publication number: 20200190834
    Abstract: A power head for a powered concrete roller screed includes a handle and a driver housing at a distal end of the handle. A cordless, battery-operated driver is received in the driver housing. A head actuator includes a translatable link extending along the handle and an eccentric cam. The eccentric cam is operatively connected to the translatable link within the drive housing such that translation of the translation link imparts rotation of the eccentric cam about a rotational axis of the eccentric cam to an actuated position. The eccentric cam is adjacent a trigger of a cordless, battery-operated driver and is configured to depress the trigger when the eccentric cam is rotated about its rotational axis to the actuated position.
    Type: Application
    Filed: September 20, 2019
    Publication date: June 18, 2020
    Inventors: Charles H. Cowie, Michael Shane Grigg