Patents by Inventor Ralph J. East

Ralph J. East 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).

  • Vaporizers and wick assemblies therefor
    Patent number: 4774032
    Abstract: A wick assembly (1) for use in e.g. an anaesthetic vaporizer (not shown) comprises layer (2) of absorbent wick material, e.g. a metallic wire cloth, secured to an impermeable backing sheet (3) e.g. of stainless steel. The wick material (2) and backing sheet (3) are rolled into a spiral configuration and thus define a spiral flow passage for gas to be vaporized. Fastening means are provided to hold the wick material (2) and sheet (3) in the spiral configuration whereby the assembly forms a self-contained unit adapted to be detachably mounted in a vaporizer.
    Type: Grant
    Filed: December 17, 1986
    Date of Patent: September 27, 1988
    Assignee: Penlon Limted
    Inventors: John R. Coates, Ralph J. East, Basil R. Sugg