Patents by Inventor Thomas P. Donovan, Sr.

Thomas P. Donovan, Sr. 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).

  • Centrifugal resin transfer molding
    Patent number: 5393215
    Abstract: Structural parts are produced from fiber composite preforms which are placed into a mold conforming to the shape of the desired part. A resin is then injected into the mold so as to fill the mold and encapsulate the fiber preform. The mold is evacuated prior to the injection step, and is rotated about a vertical axis during the injection step. The resin is maintained under pressure during the injection step, and the resin is hardened in the mold whereby net molded parts are formed.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: February 28, 1995
    Assignee: United Technologies Corporation
    Inventor: Thomas P. Donovan, Sr.
  • Stabilizing laminate inserts for resin transfer molding
    Patent number: 5064705
    Abstract: A preform assembly for use with a resin transfer molding apparatus. The preform assembly includes a dry fabric preform and a thin precured fiber-reinforced resin impregnated laminate, the preform being folded about and firmly fastened to said laminate to form a preform assembly having a stiffened and stabilized preform edge, wherein the edge aids in the insertion of the preform assembly into a mold cavity or channel of a resin transfer mold apparatus. Methods for making such preform assembly and composite article are also disclosed.
    Type: Grant
    Filed: August 28, 1999
    Date of Patent: November 12, 1991
    Assignee: United Technologies Corporation
    Inventor: Thomas P. Donovan, Sr.