Patents Assigned to Mark IV Industries, Ltd.
  • Dynamic messaging sign
    Publication number: 20040123501
    Abstract: A dynamic messaging sign that includes a plurality of display panels arranged side by side. Each of the display panels include a rigid front panel having an array of aperture holes formed therethrough, and a plurality of pixel modules arranged rearward of the front panel in alignment with the aperture holes for selectively generating indicators visible though the aperture holes. A sheet lens may be located between the planar central portion of the front panel and the pixel modules, extending over the aperture holes.
    Type: Application
    Filed: August 19, 2003
    Publication date: July 1, 2004
    Applicant: Mark IV Industries Ltd.
    Inventors: Ramin Safavi, Raymond Siu Ming Poon, Vladimir A. Volochine, Coeman Lam Sang Wong
  • Board for mounting display element
    Patent number: 5809675
    Abstract: A board usually resembling a PCB or a PWB mounts a display element, whose appearance in a viewing direction is controlled by the sense of magnetization of a core which extends through a bore in the board. A conducting coil formed on the surface of said board is located so that current in said coil will magnetize the core.
    Type: Grant
    Filed: May 6, 1997
    Date of Patent: September 22, 1998
    Assignee: Mark IV Industries Ltd.
    Inventors: Veso S. Tijanic, Matthew D. Dennis, Coeman L. S. Wong, Van H. Le
  • Display element with notched disk
    Patent number: RE35357
    Abstract: A rotor presents bright and dark sides of a flat disk to a viewer. When the bright side is presented this side plus a stationary panel form a bright viewing area. When the dark side is presented the panel is occluded. The edges of the panel and of the disk in ON position define an aperture for light emission from an optic fibre end.
    Type: Grant
    Filed: May 19, 1992
    Date of Patent: October 22, 1996
    Assignee: Mark IV Industries, Ltd.
    Inventor: John Browne