Patents by Inventor Gregory Merriweather

Gregory Merriweather 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).

  • Turf maintenance vehicle all-wheel drive system
    Patent number: 8521384
    Abstract: A turf maintenance vehicle all-wheel drive traction control system includes a primary wheel propelling the vehicle. A first motor rotates the primary wheel. A traction control system has a first portion communicating with the first motor to monitor either a first motor current demand or a rotational speed of the primary wheel or the first motor and generates a traction control value. A secondary wheel rotated by a second motor steers the vehicle in a vehicle non-slip condition. A traction control system second portion determines a secondary wheel steering angle value. A speed threshold limit stored in the traction control system compared to the traction control value generates a slippage occurrence message indicative of a primary wheel traction loss event. A second motor drive signal created by comparing the steering angle value and the slippage occurrence message energizes the second motor during the traction loss event.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: August 27, 2013
    Assignee: Textron Innovations Inc.
    Inventors: Sean C. O'Connor, Gregory Merriweather, Harry L. Derby, V, Martin M. Carlson, Kenneth R. Wilson
  • Turf Maintenance Vehicle All-Wheel Drive System
    Publication number: 20090192691
    Abstract: A turf maintenance vehicle all-wheel drive traction control system includes a primary wheel propelling the vehicle. A first motor rotates the primary wheel. A traction control system has a first portion communicating with the first motor to monitor either a first motor current demand or a rotational speed of the primary wheel or the first motor and generates a traction control value. A secondary wheel rotated by a second motor steers the vehicle in a vehicle non-slip condition. A traction control system second portion determines a secondary wheel steering angle value. A speed threshold limit stored in the traction control system compared to the traction control value generates a slippage occurrence message indicative of a primary wheel traction loss event. A second motor drive signal created by comparing the steering angle value and the slippage occurrence message energizes the second motor during the traction loss event.
    Type: Application
    Filed: January 27, 2009
    Publication date: July 30, 2009
    Applicant: TEXTRON INC.
    Inventors: Sean C. O'Connor, Gregory Merriweather, Harry L. Derby, V, Martin M. Carlson, Kenneth R. Wilson