Patents by Inventor Murray R. Dunn

Murray R. Dunn 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).

  • Seal wire control for packaging machinery responsive to product flow
    Patent number: 5597499
    Abstract: A seal wire heat control system for sealing thermoplastic film as adapted to control the duration of heat impulses applied to the sealing wire by remembering the past history of the sealing machine. The application of power to the sealing wire is provided by a series of power impulses, the duration of which is shortened incrementally as the apparatus continues to run and is lengthened incrementally when the apparatus sits at rest.
    Type: Grant
    Filed: March 31, 1995
    Date of Patent: January 28, 1997
    Assignee: Shanklin Corporation
    Inventor: Murray R. Dunn
  • Articulated arm with shoulder joint
    Patent number: 5204785
    Abstract: An articulated arm comprising at least one compact Coude optics system simulating a shoulder joint. In this Coude optics system, two mirrors rotate on one gimbal axis and the other two mirror pivot on the other gimbal axis. The axis of the two gimbals intersect and light beams passing through the system effectively are turned at this point of intersection at a desired angle.
    Type: Grant
    Filed: May 19, 1992
    Date of Patent: April 20, 1993
    Assignee: Thermo Electron Technologies Corp.
    Inventors: Kenneth Y. Tang, Murray R. Dunn, William G. Hulburd
  • Wide field multi-mode telescope
    Patent number: 5107369
    Abstract: A telescope with a spherical primary mirror and movable lightweight secondary assembly which includes an optical, imaging component and at least one location component both of which components are attached to a pivot arm. The location component can be a microwave, radio frequency or acoustic location component. The optical component of this secondary assembly reflects a portion of focused light radiation from the primary mirror back to the primary mirror and thence through a hole in the secondary mirror to a coude' optics device at the center of curvature of the primary mirror. The coude' optics device in turn reflects the focused light radiation to an imaging detector housed in the outer structure of the telescope. A preferred embodiment of the present invention combines all three of these location systems with the optical imaging component.
    Type: Grant
    Filed: November 28, 1990
    Date of Patent: April 21, 1992
    Assignee: Thermo Electron Technologies Corp.
    Inventors: Daniel L. Hendrickson, Brian W. Neff, Murray R. Dunn
  • Wide field optical system
    Patent number: 4883348
    Abstract: A telescope with a spherical primary mirror and a movable secondary optical element which is positioned at various locations near the focal plane of the primary mirror and directs a portion of the focused radiation to a coude optics device at the center of curvature of the primary mirror. The coude optics device reflects the focused radiation to a detector. In a preferred embodiment of this invention a field of several degrees can be scanned very rapidly while viewing much smaller object fields.
    Type: Grant
    Filed: June 10, 1988
    Date of Patent: November 28, 1989
    Inventors: Brett A. Spivey, Brian W. Neff, Murray R. Dunn