Patents by Inventor Benoit Bonneau

Benoit Bonneau 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).

  • Non-return valve for preventing back flow of waste waters
    Patent number: 4046161
    Abstract: A non-return valve comprising: a pipe for waste waters having a passageway for draining the waters in a downstream direction, a circular seat having a given diameter transversely disposed in said pipe and a housing opening into the passageway directly downstream and laterally with respect to the seat. The housing has an upper wall provided with a guiding strip transversely disposed with respect to the pipe and leaning in the upstream direction. A shutting ball, having a specific gravity lower than the specific gravity of the sullage and a diameter larger than the diameter of the seat is connected with the guiding strip so that the shutting ball can be brought to seat on the seat by floating on the waters in the case of an inopportune upstream back flow and be held into the housing when the waters are flowing in the normal direction.
    Type: Grant
    Filed: October 31, 1975
    Date of Patent: September 6, 1977
    Inventor: Benoit Bonneau