Patents by Inventor Roger J. Ledet

Roger J. Ledet 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).

  • Patent number: 7899618
    Abstract: A method of guiding a vehicle comprises sensing a position of a laser beam using a laser sensor and receiving a signal from the laser sensor wherein the signal is representative of the position of the laser beam. The method further includes interpreting the signal, generating a control signal in response to the laser beam being greater than a predetermined distance from a predetermined reference position and wherein the control signal is configured to control the vehicle to track the position of the laser beam. The method additionally comprises sending the control signal to a drive actuator.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: March 1, 2011
    Assignee: The Boeing Company
    Inventors: Roger J. Ledet, John E. Yestrau
  • Patent number: 7824512
    Abstract: A method of fabricating a composite part comprises generating a partial vacuum between a ply material and a form, advancing the partial vacuum and the ply material along the form, sensing an edge of a previously applied course of the ply material and cutting a profile on the ply material in response to the sensed edge.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: November 2, 2010
    Assignee: The Boeing Company
    Inventors: Arnold J. Lauder, Trevor M. McDonald, Roger J. Ledet, David Boonstra, Antonio Ferreira, Kevin C. Barrett, John Yestrau
  • Patent number: 7766063
    Abstract: A system to fabricate a composite item includes an end effector, robotic vehicle, sensor, and cutting system. The end effector applies a course to a layup form. The robotic vehicle positions the end effector. The sensor senses an edge of a previously applied course. The cutting system cuts a profile on the course in response to the sensed edge.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: August 3, 2010
    Assignee: The Boeing Company
    Inventors: Arnold J. Lauder, Trevor M. McDonald, Roger J. Ledet, David Boonstra, Antonio Ferreira, Kevin C. Barrett, John Yestrau
  • Publication number: 20090205767
    Abstract: A method of fabricating a composite part comprises generating a partial vacuum between a ply material and a form, advancing the partial vacuum and the ply material along the form, sensing an edge of a previously applied course of the ply material and cutting a profile on the ply material in response to the sensed edge.
    Type: Application
    Filed: April 14, 2009
    Publication date: August 20, 2009
    Applicant: THE BOEING COMPANY
    Inventors: Arnold J. Lauder, Trevor M. McDonald, Roger J. Ledet, David Boonstra, Antonio Ferreira, Kevin C. Barrett, John Yestrau
  • Publication number: 20090198401
    Abstract: A method of guiding a vehicle comprises sensing a position of a laser beam using a laser sensor and receiving a signal from the laser sensor wherein the signal is representative of the position of the laser beam. The method further includes interpreting the signal, generating a control signal in response to the laser beam being greater than a predetermined distance from a predetermined reference position and wherein the control signal is configured to control the vehicle to track the position of the laser beam. The method additionally comprises sending the control signal to a drive actuator.
    Type: Application
    Filed: April 9, 2009
    Publication date: August 6, 2009
    Applicant: THE BOEING COMPANY
    Inventors: Roger J. Ledet, John E. Yestrau
  • Patent number: 7536242
    Abstract: An optical laser guidance system includes a laser sensor, a controller and a plurality of actuators. The laser sensor detects a projected laser beam and sends an electrical signal representative of the position of the laser beam to the controller. The controller interprets the representative signal and uses the position of the laser beam relative to a predetermined reference position to generate a control signal to control an actuator in order to control the direction of travel of a vehicle or robot with respect to a predetermined guidepath. The laser sensor may also receive additional control messages that result in the controller generating additional control signals to control additional actuators in order to perform additional functions. The optical laser guidance system may also include a laser projection system capable of projecting a two- or three-dimensional guidepath and additional control messages.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: May 19, 2009
    Assignee: The Boeing Company
    Inventors: Roger J. Ledet, John E. Yestrau
  • Patent number: 7455742
    Abstract: To apply a plurality of courses on a layup form to fabricate a composite item, a first course of the plurality of courses is applied on the layup form along a first path. A second path is determined that overlaps an edge of the first course by a predetermined minimum overlap distance. The edge is sensed. A profile is cut along a second course of the plurality of courses to correspond to the sensed edge. The second course is applied on the layup form along the second path.
    Type: Grant
    Filed: February 16, 2005
    Date of Patent: November 25, 2008
    Assignee: The Boeing Company
    Inventors: Roger J. Ledet, Trevor M. McDonald, Arnold J. Lauder
  • Patent number: 7213629
    Abstract: A device for placing a ply on a substrate surface includes a vacuum manifold assembly configured for attachment to a vacuum source and a substrate seal configured to provide a substantially gas impermeable interface with the substrate surface. This device further includes a ply seal configured to provide a substantially gas impermeable interface with the ply. In this manner, vacuum applied to the vacuum manifold assembly depressurizes an area between the ply and the substrate surface.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: May 8, 2007
    Assignee: The Boeing Company
    Inventors: Roger J. Ledet, Arnold J. Lauder, Mathew J. Shewfelt
  • Publication number: 20040226651
    Abstract: A device for placing a ply on a substrate surface includes a vacuum manifold assembly configured for attachment to a vacuum source and a substrate seal configured to provide a substantially gas impermeable interface with the substrate surface. This device further includes a ply seal configured to provide a substantially gas impermeable interface with the ply. In this manner, vacuum applied to the vacuum manifold assembly depressurizes an area between the ply and the substrate surface.
    Type: Application
    Filed: May 14, 2003
    Publication date: November 18, 2004
    Applicant: The Boeing Company
    Inventors: Roger J. Ledet, Arnold J. Lauder, Mathew J. Shewfelt