Patents Assigned to Ledstar Inc.
  • Patent number: 7797865
    Abstract: A changeable message sign structure has a front panel assembly and rear, top, bottom and left and right end panels which define a hollow sign interior. The front panel assembly has a frame with upper, lower and left and right side frame members. At least two vertical support members are attached to the upper and lower frame members. The vertical support members each have a generally T-shaped cross-section with a rearwardly extending stem and left and right arms, each with arm flanges extending rearwardly to define securement slots between the arm flanges and the stem. At least one panel web assembly has frontwardly extending side flanges engaged within a securement slot of each of two neighbouring vertical support members. A web assembly support structure is pressed against the at least one panel web assembly and removably attached to the rearwardly extending stems of two neighbouring vertical support members.
    Type: Grant
    Filed: April 4, 2007
    Date of Patent: September 21, 2010
    Assignee: Ledstar Inc.
    Inventors: Milan Patel, Mark Grzesik
  • Patent number: 5721564
    Abstract: An electromagnetically operated, linearly sliding shutter is provided for a light source emanating from a fiber optic light guide, used for example, in a variable display such as those providing information to motorists on highways. For such a display a plurality of shutters in an array is provided with individual shutters being operable under computer control to occlude or allow passage of light in a predetermined pattern. The shutter may include a base unit having bores to hold the end of the fiber optic guide and control electromagnetic coils, and a shutter unit having a slide movable into and out of the path of light from the guide. The shutter unit may be sealed against entry of dust and dirt.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: February 24, 1998
    Assignee: Ledstar Inc.
    Inventor: Milan Patel
  • Patent number: 5036248
    Abstract: The invention concerns light emitting diode clusters assembly suitable for use in outdoor displays. The cluster on a circuit board is housed in a first socket open to its front and nested in an outer connector socket. Electrical wiring runs from the rear of the first socket via the connector socket to a source of electricity. The connector socket provides weather proofing and protects the circuit board from torque. Moreover, driver circuits of a display board into which the assembly is connected may be shielded from ultraviolet rays. A tubular visor may be provided to the front.
    Type: Grant
    Filed: November 8, 1990
    Date of Patent: July 30, 1991
    Assignee: Ledstar Inc.
    Inventors: Vince McEwan, Milan Patel