Patents by Inventor Don L. Evans

Don L. Evans 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: 6055934
    Abstract: A device is disclosed which comprises a drinking fountain for animals in the configuration of a free falling stream of water, or continuous waterfall. A pump moves water from a reservoir upward to a discharge ramp, or ramps, where water spills over into a receptacle. The reservoir and receptacle may consist of the same part. The cascade of water takes advantage of a preference demonstrated by animals for moving drinking water. The waterfall action also aerates the water and increases freshness, by breaking the surface tension of the standing water and drawing in oxygen from the atmosphere. Filtration of the circulating water in this self-contained system is easily accomplished.
    Type: Grant
    Filed: August 27, 1998
    Date of Patent: May 2, 2000
    Inventors: Mary V. Burns, Don L. Evans
  • Patent number: 5799609
    Abstract: A device is disclosed which comprises a drinking fountain for animals in the configuration of a free falling stream of water, or continuous waterfall. A pump moves water from a reservoir upward to a discharge ramp, or ramps, where water spills over into a receptacle. The reservoir and receptacle may consist of the same part. The cascade of water takes advantage of a preference demonstrated by animals for moving drinking water. The waterfall action also aerates the water and increases freshness, by breaking the surface tension of the standing water and drawing in oxygen from the atmosphere. Filtration of the circulating water in this self-contained system is easily accomplished.
    Type: Grant
    Filed: May 7, 1996
    Date of Patent: September 1, 1998
    Inventors: Mary V. Burns, Don L. Evans