Patents Assigned to United Technlogies Corp.
  • Patent number: 5240661
    Abstract: A method for fabricating a composite swashplate ring utilizing a thermoplastic expandable mandrel which is rigid during braiding, yet softens after resin impregnation to allow expansion in a mold to increase fiber consolidation. Preferably, the mandrel accepts the incorporation of preformed structures prior to braiding with the braided mandrel suitable for incorporation in a resin transfer mold such that a dry fiber braided article having preformed structures may be impregnated with resin and consolidated to produce a net-shaped composite swashplate ring without machining.
    Type: Grant
    Filed: February 4, 1992
    Date of Patent: August 31, 1993
    Assignee: United Technlogies Corp.
    Inventors: David J. Parker, Dean Nguyen