Patents by Inventor John R. Millett

John R. Millett 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).

  • Pultrusion mandrel with integral, intercooled resin injector and method of using the same
    Patent number: 5225020
    Abstract: An exemplary pultrusion mandrel of the invention comprises a first portion for arranging a fiber reinforcement substrate thereabout, a second portion having an elongated body and internal heater, and a resin injector system intermediate therebetween and having a plurality of resin injector ports integrally disposed at different angles for wetting inward surfaces of the substrate being formed. The mandrel is preferably used in conjunction with an external die. Also disclosed is an exemplary method for continuous pultrusion.
    Type: Grant
    Filed: August 20, 1991
    Date of Patent: July 6, 1993
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: John R. Millett, Jose A. Munoz