COMPOSITE CONSTRUCTION MEMBERS AND METHOD OF MAKING

WIPO Patent Application WO/2012/047635

A3

Forming a hollow composite construction member of the type suitable for use as building material includes providing an elongated inflatable mold assembly having a longitudinal axis, a flexible, substantially tubular bladder wall defining an elongated inflatable cavity that is movable between a deflated, inflated and a plurality of partially inflated conditions. A reinforcing fabric is positioned concentrically around the flexible bladder wall. A flexible air-impervious outer layer is positioned concentrically around the fabric, with the bladder wall and the outer layer defining an elongated annular space. A fluid is introduced into the cavity to at least partially inflate the mold and shape the fabric. The mold assembly is bent along the longitudinal axis to a curved shape. The elongated annular space is infused with a rigidification material such that the fabric is permeated with the rigidification material and is hardened to form a rigid hollow composite construction member.

DAGHER HABIB J (US)
NYE RICHARD F (US)

PCT/US2011/053425

August 02, 2012

September 27, 2011

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UNIV MAINE SYS BOARD TRUSTEES (US)
DAGHER HABIB J (US)
NYE RICHARD F (US)

B29C65/00

US20070175577A1	2007-08-02
US4212621A	1980-07-15
US6189286B1	2001-02-20
US3143155A	1964-08-04
US5599599A	1997-02-04
US6082075A	2000-07-04
US20060174549A1	2006-08-10
US5339574A	1994-08-23
US4825599A	1989-05-02
US4746471A	1988-05-24
US5400999A	1995-03-28

GILLESPIE, Ted, C. (Sobanski & Todd LLC, One Maritime Plaza, US)

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