Patents by Inventor Luke E Graham

Luke E Graham 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).

  • Apparatus and method for controlling work tool vibration
    Patent number: 7269943
    Abstract: An apparatus and method for controlling a work tool on a work machine are provided. The work machine may have first and second actuators, each actuator being operable in a vibratory mode and a non-vibratory mode, and each actuator being coupled to the work tool for changing the position of the work tool. The method may include simultaneously (i) operating the first actuator in a vibratory mode, (ii) operating the second actuator in a vibratory mode, and (iii) receiving a command to change the position of the work tool. The method may further include operating the first actuator in a non-vibratory mode to change the position of the work tool while operating the second actuator in a vibratory mode to vibrate the work tool, in response to receiving the command.
    Type: Grant
    Filed: May 6, 2005
    Date of Patent: September 18, 2007
    Assignee: Caterpillar Inc.
    Inventors: Jason M Buckmier, Daniel A Cockman, Luke E Graham, Gilles Hoessler, David L Messer, W Ryan Most