Patents by Inventor David D. Van Horn

David D. Van Horn 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).

  • Patent number: 9889785
    Abstract: A portable weighing hopper assembly for use in precisely loading bulk material or commodities in a shipping container or vessel which includes a wheeled frame having first and second metered hoppers mounted thereon. A primary hopper is mounted on the wheeled frame for supplying material to either the first and second metered hoppers. A transfer valve is positioned between the discharge end of the primary hopper and the first and second metered hoppers for directing material from the primary hopper to either the first and second metered hoppers. A slide gate is positioned between the lower outlet end of the primary hopper and the transfer valve. Load cells are associated with the first and second metered hoppers which supplies the weight information to a CPU. The CPU controls the flow of material from the metered hoppers to a conveyor which discharges the material into a shipping container or the like.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: February 13, 2018
    Inventor: David D. Van Horn
  • Patent number: 4420800
    Abstract: A reflector lamp with a shaped reflector and lens. The reflector is generally parabolic, to reflect light frontwardly. Some of the direct light from the light source is not reflected, and diverges in a beam pattern that would be wasted; the lens refracts this divergent light in a more frontwardly and useful direction. For a floodlight, the lens converges the reflected light rays into a crossover pattern to provide a flood beam pattern.
    Type: Grant
    Filed: February 16, 1982
    Date of Patent: December 13, 1983
    Assignee: General Electric Company
    Inventor: David D. Van Horn
  • Patent number: 4420801
    Abstract: A reflector lamp comprising a concave reflector having a parabolic rear section, a spherical intermediate section, and a parabolic front section, each of the reflector sections having substantially the same common focal point, and a finite light source at the substantially common focal point, the reflector sections being dimensioned so that substantially all light rays from the finite light source which are reflected by the spherical intermediate section become re-reflected by the parabolic front section.
    Type: Grant
    Filed: February 26, 1982
    Date of Patent: December 13, 1983
    Assignee: General Electric Company
    Inventors: Gilbert H. Reiling, John M. Putz, David D. Van Horn