Patents Assigned to The 14th and Constitution National Institute of Standards and Technology
  • Positioning stage actuation
    Publication number: 20030051331
    Abstract: A positioning device and method for moving a positioning stage is provided. The device includes a movable stage, at least one actuator, and the same number of sensors as there are actuators. Each actuator is placed such that it applies a force along a line parallel to the line of movement of the positioning stage. Each actuator can be operated to generate an input force for moving the movable stage. A sensor is placed along the force line of each included actuator. Each sensor detects movement of the positioning stage. A first force is applied to a first location on the positioning stage. A second force is applied to a second location on the positioning stage. Application of the first and the second forces moves the positioning stage. The first location and the second location are symmetrically located about an axis of the positioning stage.
    Type: Application
    Filed: October 10, 2002
    Publication date: March 20, 2003
    Applicant: The 14th and Constitution, National Institute of Standards and Technology
    Inventors: Edward G. Amatucci, Frederic E. Scire, Lowell P. Howard, Nicholas G. Dagalakis, Jason Marcinkoski, John A. Kramer
  • Positioning stage
    Patent number: 6467761
    Abstract: A positioning device and method for positioning objects is provided. The device includes a movable stage and a pair of levers. The pair of levers is symmetric about a first axis of the movable stage. Additionally, the pair of levers is parallel to a second axis of the movable stage. This second axis is perpendicular to the first axis. Each of the pair of levers applies a force to the movable stage. Each of the pair of levers moves in an arc. The two levers move in opposite directions along their respective arc. The two arcs are symmetrical about an axis of the movable stage.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: October 22, 2002
    Assignees: The United States of America as represented by the Secretary of Commerce, The 14th and Constitution National Institute of Standards and Technology
    Inventors: Edward G. Amatucci, Nicholas G. Dagalakis, Jason Marcinkoski, Frederic E. Scire, John A. Kramar
  • Apparatus and method for utilizing electromagnetic acoustic transducers to non-destructively analyze in-service conductive materials
    Patent number: 6382029
    Abstract: The method of the invention identifies damage to an in-service conductor associated with the delivery (transmission and distribution) of electric power. Electro-magnetic acoustic energy is generated in an in-service conductor associated with the delivery of electric power. Corresponding return electro-magnetic acoustic energy is then measured. Features are then extracted from the return electro-magnetic acoustic energy to characterize damage to the in-service conductor. The features may be extracted through a variety of signal processing techniques, such as wavelet signal processing. The extracted features may be classified using a neural network, fuzzy logic, or a combination of both.
    Type: Grant
    Filed: March 7, 2000
    Date of Patent: May 7, 2002
    Assignees: The United States of America as represented by the Secretary of Commerce, The 14th and Constitution National Institute of Standards and Technology, Colorado School of Mines
    Inventors: Rahmat A. Shoureshi, Michael T. Chenowith, George A. Alers