Patents by Inventor Charles H. Loch

Charles H. Loch 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).

  • Luminaire for residential roadway lighting
    Patent number: 4360863
    Abstract: A luminaire for roadway lighting using a one-piece reflector developing at least two collimated beams in each longitudinal direction. The collimated beams impinge on sloping faces of a refractor to diverge the beams into a regular pattern covering the street with a sharp cutoff at predetermined longitudinal distances from the luminaire. The refractor employs a compressed parabola comprised of radial sections of comparatively large focal length with steps and risers. The complex shape of the one-piece reflector may readily be produced by a reflector finish applied to a molded plastic matrix. In the luminaire, the prismatic surfaces of the inclined walls of the refractor diverge the formerly collimated beams in a carefully controlled manner to produce very uniform distribution of light.
    Type: Grant
    Filed: June 16, 1980
    Date of Patent: November 23, 1982
    Assignee: International Telephone and Telegraph Corporation
    Inventors: Jocelyn T. Barnes, Chester A. Hard, III, Billy L. Shelby, Charles H. Loch
  • Luminaire for residential roadway lighting
    Patent number: 4234912
    Abstract: A luminaire for roadway lighting using a one-piece reflector developing at least two collimated beams in each longitudinal direction. The collimated beams impinge on sloping faces of a refractor to diverge the beams into a regular pattern covering the street with a sharp cutoff at predetermined longitudinal distances from the luminaire. The refractor employs a compressed parabola comprised of radial sections of comparatively large focal length with steps and risers. The complex shape of the one-piece reflector may readily be produced by a reflector finish applied to a molded plastic matrix. In the luminaire, the prismatic surfaces of the inclined walls of the refractor diverge the formerly collimated beams in a carefully controlled manner to produce very uniform distribution of light.
    Type: Grant
    Filed: June 28, 1978
    Date of Patent: November 18, 1980
    Assignee: International Telephone and Telegraph Corporation
    Inventors: Jocelyn T. Barnes, Chester A. Hard, III, Billy L. Shelby, Charles H. Loch