Patents by Inventor John G. Cairns

John G. Cairns 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).

  • Method of and apparatus for the pouring of fast foaming reactants
    Patent number: 3931933
    Abstract: A method and apparatus for the pouring of fast foaming reactants which essentially comprises the use of a disposable nozzle liner and a nozzle assembly adapted for use with such a disposable liner. The invention encompasses air flushing the nozzle assembly after each pouring cycle until the foam build-up on the nozzle liner becomes unacceptable. The liner is then replaced and operations are continued.
    Type: Grant
    Filed: June 27, 1974
    Date of Patent: January 13, 1976
    Assignee: Mobay Chemical Corporation
    Inventors: John G. Cairns, John L. McPherson, James D. Orefice