Patents by Inventor Jack R. Sheppard

Jack R. Sheppard 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).

  • High efficiency sealed beam reflector lamp with reflective surface of heat treated silver
    Patent number: 5789847
    Abstract: A reflector lamp having a lens of vitreous material fused to a reflector body of vitreous material. An inner reflector surface of the reflector body includes a reflective coating having a first coating portion extending from the rim of the reflector body and a second coating portion extending from a location spaced from the rim towards a basal end of the reflector body. The second coating portion is a layer of heat-treated silver having a uniform, whitish non-metallic appearance and being diffusely reflective. The first coating portion is a layer of material other than silver, such as aluminum, having a higher resistance to damage by high heat in the rim area during fusing of the lens to the reflector body.
    Type: Grant
    Filed: October 24, 1995
    Date of Patent: August 4, 1998
    Assignee: Philips Electronics North America Corporation
    Inventors: David R. Woodward, Walter A. Boyce, Jack R. Sheppard
  • High efficiency sealed beam reflector lamp
    Patent number: 5493170
    Abstract: A reflector lamp having a lens of vitreous material fused to a reflector body of vitreous material. An inner reflector surface of the reflector body includes a reflective coating having a first coating portion extending from the rim of the reflector body and a second coating portion extending from a location spaced from the rim towards a basal end of the reflector body. The second coating portion is a layer of silver and the first coating portion is a layer of material other than silver, such as aluminum, having a higher resistance to damage by high heat in the rim area during fusing of the lens to the reflector body. Higher efficacies are achieved with the silver layer spaced from the rim than with silver covering the entire reflector surface.
    Type: Grant
    Filed: September 9, 1994
    Date of Patent: February 20, 1996
    Assignee: Philips Electronics North America Corporation
    Inventors: Jack R. Sheppard, David R. Woodward, James A. Cinalli, Douglas W. Shriver, Walter A. Boyce, Edmund R. Kern