Patents by Inventor Douglas S. Gerhardt

Douglas S. Gerhardt 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).

  • Publication number: 20130029276
    Abstract: The present invention involves a combustion apparatus for utilizing as an oil candle. The apparatus is a material suitable for forming a heat sink, having a ring or cylinder for enclosing a wick which wick extends into oil suitable for oil candles, and a heat sink extending from the wick holder or forming the wick holder and connecting to or forming a base for distributing heat evenly along the heat sink within the oil to prevent flashover. The apparatus preferably utilizes a metal fiber wick and may comprise multiple wick holders.
    Type: Application
    Filed: July 25, 2011
    Publication date: January 31, 2013
    Inventor: Douglas S. Gerhardt
  • Patent number: 5950334
    Abstract: Flexible spiked arrangements for placement onto footwear are provided. The spiked arrangement has a heel portion for engaging a heel part of the footwear, a toe portion for placement over a toe part of the footwear, and an intermediate bottom sole portion that interconnects the heel and toe portions and is provided with a plurality of spikes. Straps disposed on the heel portion hold the spiked arrangement on the footwear, for example by being strapped around the ankle of a person wearing the spiked arrangement.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: September 14, 1999
    Inventor: Douglas S. Gerhardt