Patents by Inventor Lloyd Wallman

Lloyd Wallman 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).

  • Temperature controlled grease trap
    Patent number: 5409615
    Abstract: Apparatus is disclosed for maintaining the temperature of waste water entering a grease trap below a preset temperature. The apparatus is useful to prevent grease which has collected in the grease trap from being washed into the sewer system by persons attempting to flush the grease from the trap with hot water. A temperature sensor monitors the temperature of waste water flowing into the grease trap. Cold water is introduced directly into the waste water conduit, upstream of the trap, through a valve controllably coupled to the temperature sensor whenever the temperature of waste water in the waste water conduit exceeds a threshold temperature.
    Type: Grant
    Filed: September 9, 1993
    Date of Patent: April 25, 1995
    Assignee: Le-Ron Plastics, Inc.
    Inventors: Lloyd Wallman, Leon B. Watts