Patents by Inventor Elizabeth A. Downing

Elizabeth A. Downing 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).

  • Light scanning system for measurement of orientation and physical features of a workpiece
    Patent number: 5054918
    Abstract: A structured light scanning system observes, interprets and provides structural feature size, position and movement data in automotive service equipment applications where such feature characteristics must be determined either preliminary to or ultimately for measurement of quantities affecting automotive performance, such as tire/rim assembly balance, runout and alignment or brake surface planarity and smoothness.
    Type: Grant
    Filed: February 2, 1990
    Date of Patent: October 8, 1991
    Assignee: FMC Corporation
    Inventors: Elizabeth A. Downing, Steven W. Rogers, Raymond Titsworth, Donald J. Christian, Michael L. Baird
  • Three dimensional image generating apparatus having a phosphor chamber
    Patent number: 4870485
    Abstract: Three dimensional television viewing apparatus having an image chamber which produces images that can be viewed from a plurality of directions. An imaging phosphor is distributed in a three dimensional chamber. A pair of energy beams are directed by a pair of scanning systems inside the chamber to an intersection where visible light is released from the imaging phosphor. The point of intersection of the two beams is moved inside the chamber to produce a visible three dimensional image.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: September 26, 1989
    Assignee: FMC Corporation
    Inventors: Elizabeth A. Downing, Bernardo Torres
  • Soft contact lens analyzer
    Patent number: 4684246
    Abstract: A soft contact lens measuring device. A cylindrical lens support defines a cavity and pedestal for immersing a soft contact lens in a saline solution. A piston engages the support and can be operated by the user to force air in controlled amounts through a narrow passageway extending up through the pedestal to the saline solution. A bubble forms and rises until it is trapped by the lens. The interface between the bubble and the lens makes a convenient surface for focusing a radiuscope to allow lens dimensions to be determined.
    Type: Grant
    Filed: June 26, 1985
    Date of Patent: August 4, 1987
    Inventors: Elizabeth A. Downing, Ronald W. Downing