Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Reexamination Certificate
2003-05-15
2009-12-01
Miggins, Michael C (Department: 1794)
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
Reexamination Certificate
active
07625618
ABSTRACT:
An article of fiber-reinforced composite material formed by co-curing a lay up under a cycle of heat and pressure. The lay up comprises a first uncured composite layer having at least one uncured resin-impregnated laminate layer. At least one hollow mandrel is provided comprised of a stiffened braided fabric and having an upper, a lower and side surfaces. The mandrel is secured on the upper surface of the first composite layer with the lower surface thereof in engagement with the upper surface of the first composite layer. A second uncured composite layer is positioned over the upper and side surfaces of the hollow mandrel and at least a portion of the upper surface the first uncured composite layer. The second uncured composite layer has at least one uncured resin-impregnated layer. After the cycle of heat and pressure in an autoclave, the hollow mandrel is retained in the co-cured article.
REFERENCES:
patent: 5332178 (1994-07-01), Williams
patent: 5469686 (1995-11-01), Pykiet
patent: 6821638 (2004-11-01), Obeshaw
patent: 1122052 (2001-08-01), None
Allen Gregory A.
Reed Anthony E.
Goodwin & Procter LLP
Miggins Michael C
Rohr Inc.
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