Patents by Inventor William R. Preis

William R. Preis 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: 4115876
    Abstract: This disclosure relates to a self-contained recirculating toilet system which includes a toilet bowl having a built-in flush pump and a waste-discharge macerator pump with the discharge of the macerator pump being connected to a holding tank unit for delivering raw waste into a raw-waste compartment thereof. The raw waste is periodically pumped from the raw-waste compartment to a combined sterilization and flocculation cell unit after which the treated liquid is returned to the holding-tank unit and after solids float over weir by virtue of gaseous suspension from the treatment in the cells and aided by the outward flow through a discharge slit the remaining clarified and sterilized liquid is directed into a flush-water compartment of the holding-tank unit for use in the next flushing of the toilet. The system provides for repeated use of the same water for multiple toilet flushing.
    Type: Grant
    Filed: November 24, 1976
    Date of Patent: September 26, 1978
    Assignee: Cole Resdevel Corp.
    Inventors: William Cole, Jr., William R. Preis