Patents by Inventor Eric D. Larsen

Eric D. Larsen 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: 7094989
    Abstract: A welding apparatus using ultrasonic sensing is described and which includes a movable welder having a selectively adjustable welding head for forming a partially completed weld in a weld seam defined between adjoining metal substrates; an ultrasonic assembly borne by the moveable welder and which is operable to generate an ultrasonic signal which is directed toward the partially completed weld, and is further reflected from same; and a controller electrically coupled with the ultrasonic assembly and controllably coupled with the welding head, and wherein the controller receives information regarding the ultrasonic signal and in response to the information optimally positions the welding head relative to the weld seam.
    Type: Grant
    Filed: April 12, 2004
    Date of Patent: August 22, 2006
    Assignee: Battelle Energy Alliance, LLC
    Inventors: Timothy R. McJunkin, John A. Johnson, Eric D. Larsen, Herschel B. Smartt
  • Patent number: 6949005
    Abstract: A grinding assembly for grinding a weld joint of a workpiece includes a grinder apparatus, a grinder apparatus includes a grinding wheel configured to grind the weld joint, a member configured to receive the grinding wheel, the member being configured to be removably attached to the grinder apparatus, and a sensor assembly configured to detect a contact between the grinding wheel and the workpiece. The grinding assembly also includes a processing circuitry in communication with the grinder apparatus and configured to control operations of the grinder apparatus, the processing circuitry configured to receive weld defect information of the weld joint from an inspection assembly to create a contour grinding profile to grind the weld joint in a predetermined shape based on the received weld defect information, and a manipulator having an end configured to carry the grinder apparatus, the manipulator further configured to operate in multiple dimensions.
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: September 27, 2005
    Assignee: Battelle Energy Alliance, LLC
    Inventors: Eric D. Larsen, Arthur D. Watkins, Rodney J. Bitsoi, David P. Pace
  • Patent number: 6792336
    Abstract: The present invention relates to process control where some of the controllable parameters are difficult or impossible to characterize. The present invention relates to process control in biotechnology of such systems, but not limited to. Additionally, the present invention relates to process control in biotechnology minerals processing. In the inventive method, an application of the present invention manipulates a minerals bioprocess to find local exterma (maxima or minima) for selected output variables/process goals by using a learning-based controller for bioprocess oxidation of minerals during hydrometallurgical processing. The learning-based controller operates with or without human supervision and works to find processor optima without previously defined optima due to the non-characterized nature of the process being manipulated.
    Type: Grant
    Filed: September 26, 2000
    Date of Patent: September 14, 2004
    Assignee: Bechtel BWXT Idaho, LLC
    Inventors: John A. Johnson, Daphne L. Stoner, Eric D. Larsen, Karen S. Miller, Charles R. Tolle
  • Patent number: 6484584
    Abstract: A method for the concurrent ultrasonic inspection of partially completed welds is disclosed and which includes providing a pair of transducers which are individually positioned on the opposite sides of a partially completed weld to be inspected; moving the transducers along the length of and laterally inwardly and outwardly relative to the partially completed weld; pulsing the respective transducers to produce an ultrasonic signal which passes through or is reflected from the partially completed weld; receiving from the respective transducers ultrasonic signals which pass through or are reflected from the partially completed welds; and analyzing the ultrasonic signal which has passed through or is reflected from the partially completed weld to determine the presence of any weld defects.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: November 26, 2002
    Assignee: Bechtel BWXT Idaho, LLC
    Inventors: John A. Johnson, Eric D. Larsen, Karen S. Miller, Herschel B. Smartt, Timothy R. McJunkin
  • Patent number: 6385857
    Abstract: Position detectors, welding system position detectors, methods of detecting various positions, and methods of providing position detectors are described. In one embodiment, a welding system positional detector includes a base that is configured to engage and be moved along a curved surface of a welding work piece. At least one position detection apparatus is provided and is connected with the base and configured to measure angular position of the detector relative to a reference vector. In another embodiment, a welding system positional detector includes a weld head and at least one inclinometer mounted on the weld head. The one inclinometer is configured to develop positional data relative to a reference vector and the position of the weld head on a non-planar weldable work piece.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: May 14, 2002
    Assignee: Bechtel BWXT Idaho LLC.
    Inventors: David M. Weinberg, L. Dean Harding, Eric D. Larsen
  • Patent number: 6365873
    Abstract: An apparatus for the concurrent inspection of partially completed welds is described in which is utilized in combination with a moveable welder for forming a partially completed weld, and an ultrasonic generator mounted on a moveable welder in which is reciprocally moveable along a path of travel which is laterally disposed relative to the partially completed weld.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: April 2, 2002
    Assignee: Bechtel BWXT Idaho, LLC
    Inventors: Herschel B. Smartt, John A. Johnson, Eric D. Larsen, Rodney J. Bitsoi, Ben C. Perrenoud, Karen S. Miller, David P. Pace
  • Publication number: 20010052264
    Abstract: A method for the concurrent ultrasonic inspection of partially completed welds is disclosed and which includes providing a pair of transducers which are individually positioned on the opposite sides of a partially completed weld to be inspected; moving the transducers along the length of and laterally inwardly and outwardly relative to the partially completed weld; pulsing the respective transducers to produce an ultrasonic signal which passes through or is reflected from the partially completed weld; receiving from the respective transducers ultrasonic signals which pass through or are reflected from the partially completed welds; and analyzing the ultrasonic signal which has passed through or is reflected from the partially completed weld to determine the presence of any weld defects.
    Type: Application
    Filed: December 19, 2000
    Publication date: December 20, 2001
    Applicant: Bechtel BWXT Idaho, LLC
    Inventors: John A. Johnson, Eric D. Larsen, Karen S. Miller, Herschel B. Smartt, Timothy R. McJunkin
  • Patent number: 6178819
    Abstract: An inspection apparatus for evaluating a partially completed weld is described and which is utilized in combination with an automated movable welder which moves across a supporting surface, and wherein the inspection apparatus includes a coupling member mounted on the welder; a frame member mounted on the coupling member; an ultrasonic sensor mounted on the frame member and disposed in ultrasonic sound transmitting relation relative to the partially completed weld; and a drive assembly for adjusting the position of the ultrasonic sensor relative to the partially completed weld.
    Type: Grant
    Filed: November 19, 1998
    Date of Patent: January 30, 2001
    Assignee: Bechtel BWXT Idaho, LLC
    Inventors: Herschel B. Smartt, Eric D. Larsen, Jonn A. Johnson