Patents by Inventor Donald William Johnston

Donald William Johnston 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: 6973895
    Abstract: An apparatus for supplying food and water to animals having a feeding component with an upper reservoir for receiving food therein, a watering component with a lower reservoir for receiving water therein and a water control system having a fluid level regulator to maintain the level of water in the lower reservoir. The upper reservoir is removably supported above the lower reservoir by a support mechanism interconnecting the feeding and watering components. In one configuration, the support mechanism is a post attached to the bottom of the upper reservoir sized and configured to be received in a post connector at the bottom of the lower reservoir. The fluid level regulator can comprise a float level system having a fluid valve connected to float by an actuating arm. A hose can be connected to a connector at an inlet on one of the lower reservoir's sidewalls.
    Type: Grant
    Filed: August 6, 2003
    Date of Patent: December 13, 2005
    Inventor: Donald William Johnston