Patents Assigned to Keystone Lighting Corp.
  • Patent number: 4280724
    Abstract: A one piece spring latch having a camming surface engageable by the edge of a cooperating latching aperture to deflect the latch element until it passes through the aperture to latching position, the latch element then snapping into overlying latching engagement with the material forming the bounding edge of the latching aperture.The latch is particularly suitable for latching together substantially co-planar panels disposed closely adjacent to one another, as for example the diffuser frame and housing of a fluorescent lighting fixture, a portion of the latching device being of thin cross section and extending between the edges of the panels so that very little clearance between the adjacent panel edges is required. The latch includes release tabs which are physically small and are easily operable by finger pressure.
    Type: Grant
    Filed: June 15, 1979
    Date of Patent: July 28, 1981
    Assignee: Keystone Lighting Corp.
    Inventor: John Dalton
  • Patent number: 4149226
    Abstract: A lighting fixture of square, rectangular or triangular shape consisting of a completely enclosed metal box within which the wiring and ballast transformers are contained, with integral portions of the box providing supports for one or more fluorescent lamps and thereby completely eliminating the need to secure to the body of the fixture separate support clips for the lamps. Reductions in material and manufacturing costs as well as shipping costs are realized because of reductions in material used, assembly time and physical size. The closed box configuration permits open suspension mounting, and the geometry is such that heat to which the ballasts are subjected is reduced.
    Type: Grant
    Filed: July 22, 1977
    Date of Patent: April 10, 1979
    Assignee: Keystone Lighting Corp.
    Inventor: John Dalton
  • Patent number: D253309
    Type: Grant
    Filed: July 7, 1977
    Date of Patent: October 30, 1979
    Assignee: Keystone Lighting Corp.
    Inventor: John Dalton