Patents by Inventor Raymond Alan Dean

Raymond Alan Dean 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).

  • Miniature two-pin tungsten halogen lamp
    Patent number: 5886466
    Abstract: A miniature two-pin, tungsten-halogen lamp in the shape of a cylindrical envelope formed of high temperature glass having a sealed chamber capable of withstanding internal pressures of between 5 and 20 atmospheres. The diameter of the cylindrical envelope is in the range of 0.250 to 0.313 inches and contains at least one refractory metal filament mounted within the sealed chamber. The metal filament is electrically connected to a pair of leads passing out of the envelope. A fill gas is contained within the sealed chamber and contains an inert gas major constituent and a halide gas minor constituent. The lamp produces an efficacy of up to 26 lumens per watt when operating within a range of from 1.25 to 18 watts.
    Type: Grant
    Filed: January 8, 1997
    Date of Patent: March 23, 1999
    Assignee: Welch Allyn, Inc.
    Inventors: Dean A. Bell, Raymond Alan Dean
  • Lensed end lamp with curved filament for uniform illumination
    Patent number: 5793159
    Abstract: A lamp which provides substantially uniform illumination over a predetermined area which includes a glass envelope having a lensed end and a curved filament contained within the envelope. The filament contains a plurality of coils which are disposed in a concave orientation with respect to the lensed end.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: August 11, 1998
    Assignee: Welch Allyn, Inc.
    Inventors: Teresa Motz West, William Henry Lagerway, Raymond Alan Dean