Patents by Inventor Melvin J. De Marsh

Melvin J. De Marsh 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).

  • Halide and like light reflector and socket assembly
    Patent number: 4538215
    Abstract: A lighting assembly especially adapted for promoting growth of plants in a greenhouse environment and the like, having a reflector cone with a light reflecting surface at a single cone angle of from about 76.degree. to about 64.degree. and preferably at an angle of about 68.degree. with respect to the center axis of the cone, and having a high powered halide or like light in part extending substantially below the plane of the outer edge of the reflector cone when the assembly is supported in a depending manner.
    Type: Grant
    Filed: November 17, 1983
    Date of Patent: August 27, 1985
    Inventor: Melvin J. De Marsh
  • Halide and like light reflector and socket assembly for greenhouse and like use
    Patent number: 4418379
    Abstract: A frustoconical reflector and socket assembly for halide and like lights especially adapted for promoting growth of plants in a greenhouse environment and the like, the light reflecting surface of the reflector cone being at an angle from about 76.degree. to about 64.degree. and preferably about 68.degree. with respect to the center axis of the cone, and preferably being adjustable as by means of selective interconnection of holes along one radial edge of the cone and selected holes along the other radial edge thereof, and with adjustable counterweight means being provided generally opposite the radially cut edges of the cone to counterbalance the weight of the overlapping segment of the cone for any given selected cone angle.
    Type: Grant
    Filed: September 8, 1981
    Date of Patent: November 29, 1983
    Inventor: Melvin J. De Marsh