Patents by Inventor John T. Keyes

John T. Keyes 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).

  • Combined safety vent and siphon unloading nozzle for liquid transportation vehicle
    Patent number: 4347863
    Abstract: A vehicle for transporting a liquid commodity has a combined frangible disc safety vent and siphon unloading pipe nozzle. The siphon unloading pipe passes through a hole in the vehicle that is surrounded by the nozzle side wall. The hole is dimensioned to enable the nozzle to act as a surge chamber that dissipates transient pressure surges and thereby prevents premature breaking of the frangible safety vent disc.
    Type: Grant
    Filed: July 14, 1977
    Date of Patent: September 7, 1982
    Assignee: Union Tank Car Company
    Inventor: John T. Keyes