Patents by Inventor Walter B. Clark

Walter B. Clark 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: 5964233
    Abstract: A patio umbrella that includes a dining table and a fuel-burning radiant heater avoids overheating of the upper canopy by mounting the support on which the upper canopy rests in the shadow cast by a reflector that converges upwardly to a chimney portion. The reflector is affixed to the housing of the combustion chamber. In addition to reflecting radiant heat downwardly onto the table and the diners, the reflector shields the upper canopy support from radiant heat and provides a duct for venting the products of combustion. As the latter pass up through the chimney portion, cooler air is drawn up through the space between the reflector and the upper canopy support thereby preventing hot air from stagnating there. The upper canopy support is mounted to the reflector and spaced above it by a number of insulative ceramic spacers.
    Type: Grant
    Filed: August 12, 1998
    Date of Patent: October 12, 1999
    Inventors: Walter B Clark, M. Robert Davis
  • Patent number: 5111370
    Abstract: A device and method for converting a fluorescent down-light into an up-light or combined up-down-light involves suspending a luminaire body from a ceiling below a pre-existing down-light. Ballast lead extenders connect lamp holders in the luminaire body to the lamp holders in the pre-existing down-light. A reflective panel is inserted above the luminaire body serving the dual purposes of hiding the down-light and downwardly reflecting the light which emanantes from the luminaire body.
    Type: Grant
    Filed: February 21, 1991
    Date of Patent: May 5, 1992
    Inventor: Walter B. Clark