Patents by Inventor David H. Lammlein

David H. Lammlein 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).

  • Lateral position detection and control for friction stir systems
    Patent number: 8191753
    Abstract: An apparatus and computer program are disclosed for processing at least one workpiece using a rotary tool with rotating member for contacting and processing the workpiece. The methods include oscillating the rotary tool laterally with respect to a selected propagation path for the rotating member with respect to the workpiece to define an oscillation path for the rotating member. The methods further include obtaining force signals or parameters related to the force experienced by the rotary tool at least while the rotating member is disposed at the extremes of the oscillation. The force signals or parameters associated with the extremes can then be analyzed to determine a lateral position of the selected path with respect to a target path and a lateral offset value can be determined based on the lateral position. The lateral distance between the selected path and the target path can be decreased based on the lateral offset value.
    Type: Grant
    Filed: October 7, 2011
    Date of Patent: June 5, 2012
    Assignee: Vanderbilt University
    Inventors: Paul Fleming, David H. Lammlein, George E. Cook, Don Mitchell Wilkes, Alvin M. Strauss, David R. Delapp, Daniel A. Hartman
  • LATERAL POSITION DETECTION AND CONTROL FOR FRICTION STIR SYSTEMS
    Publication number: 20120022683
    Abstract: An apparatus and computer program are disclosed for processing at least one workpiece using a rotary tool with rotating member for contacting and processing the workpiece. The methods include oscillating the rotary tool laterally with respect to a selected propagation path for the rotating member with respect to the workpiece to define an oscillation path for the rotating member. The methods further include obtaining force signals or parameters related to the force experienced by the rotary tool at least while the rotating member is disposed at the extremes of the oscillation. The force signals or parameters associated with the extremes can then be analyzed to determine a lateral position of the selected path with respect to a target path and a lateral offset value can be determined based on the lateral position. The lateral distance between the selected path and the target path can be decreased based on the lateral offset value.
    Type: Application
    Filed: October 7, 2011
    Publication date: January 26, 2012
    Applicant: Vanderbilt University
    Inventors: Paul Fleming, David H. LAMMLEIN, George E. COOK, Don Mitchell WILKES, Alvin M. STRAUSS, David R. DELAPP, Daniel A. HARTMAN
  • Lateral position detection and control for friction stir systems
    Patent number: 8052034
    Abstract: Friction stir methods are disclosed for processing at least one workpiece using a rotary tool with rotating member for contacting and processing the workpiece. The methods include oscillating the rotary tool laterally with respect to a selected propagation path for the rotating member with respect to the workpiece to define an oscillation path for the rotating member. The methods further include obtaining force signals or parameters related to the force experienced by the rotary tool at least while the rotating member is disposed at the extremes of the oscillation. The force signals or parameters associated with the extremes can then be analyzed to determine a lateral position of the selected path with respect to a target path and a lateral offset value can be determined based on the lateral position. The lateral distance between the selected path and the target path can be decreased based on the lateral offset value.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: November 8, 2011
    Assignee: Vanderbilt University
    Inventors: Paul Fleming, David H. Lammlein, George E. Cook, Don Mitchell Wilkes, Alvin M. Strauss, David R. Delapp, Daniel A. Hartman