Patents by Inventor Doyle S. Maxwell

Doyle S. Maxwell 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).

  • Rotary mower blade
    Patent number: 6679039
    Abstract: A rotary mower blade is formed with a notch at each end of the blade. Upwardly inclined vanes are provided on trailing edges of end portions of the blade adjacent the respective notches. Intermediate a central portion of the blade and the end portions, surfaces are formed extending downwardly from the leading to the trailing edges of the blade.
    Type: Grant
    Filed: August 12, 2002
    Date of Patent: January 20, 2004
    Assignee: Murray Inc.
    Inventors: Joseph P. Deschamps, Doyle S. Maxwell
  • Dual arm choke and throttle control
    Patent number: 6598586
    Abstract: A choke and throttle control arrangement for a small engine includes a base plate to which a pair of levers are pivotally joined. One includes a governor spring arm connected to the engine's speed governor, and the other is provided with an arm which serves as a choke actuator. A spring interconnects the two levers to permit them to rotate in unison at low engine speed in response to operator actuation of a throttle control handle. An adjustable stop member is positioned to interrupt the rotation of the governor spring arm when a selected less-than-maximum engine speed is reached. Further throttle control handle advancement permits the choke actuating arm to move to the closed choke position. As the throttle control handle is moved towards a low speed setting, the lever containing the choke actuating arm returns to the position at which the selected less-than-maximum speed was reached.
    Type: Grant
    Filed: July 13, 2002
    Date of Patent: July 29, 2003
    Assignee: Murray, Inc.
    Inventors: Joseph P. Deschamps, Doyle S. Maxwell
  • Dual arm choke and throttle control
    Publication number: 20030029418
    Abstract: A choke and throttle control arrangement for a small engine includes a base plate to which a pair of levers are pivotally joined. One includes a governor spring arm connected to the engine's speed governor, and the other is provided with an arm which serves as a choke actuator. A spring interconnects the two levers to permit them to rotate in unison at low engine speed in response to operator actuation of a throttle control handle. An adjustable stop member is positioned to interrupt the rotation of the governor spring arm when a selected less-than-maximum engine speed is reached. Further throttle control handle advancement permits the choke actuating arm to move to the closed choke position. As the throttle control handle is moved towards a low speed setting, the lever containing the choke actuating arm returns to the position at which the selected less-than-maximum speed was reached.
    Type: Application
    Filed: July 13, 2002
    Publication date: February 13, 2003
    Inventors: Joseph P. Deschamps, Doyle S. Maxwell