초록 ▼

A hollow fiber reinforced structure having irregular cross-sections, curvatures, joints and twists is provided. A method of forming the structure includes placing fibrous material on the walls of an outer mold and placing a bladder internal to the fibrous material, which serves as an inner mold. Whe

A hollow fiber reinforced structure having irregular cross-sections, curvatures, joints and twists is provided. A method of forming the structure includes placing fibrous material on the walls of an outer mold and placing a bladder internal to the fibrous material, which serves as an inner mold. When the mold is closed and the bladder expanded, resin is injected into the fibrous material. After curing, the solid reinforced structure is formed.

대표청구항 ▼

A large molded structural part having a complex shape comprising: a hollow fiber reinforced plastic member including at least a first and a second section extending in different directions to each other and joined together at a joint, the first and second sections being asymmetrical in cross section

A large molded structural part having a complex shape comprising: a hollow fiber reinforced plastic member including at least a first and a second section extending in different directions to each other and joined together at a joint, the first and second sections being asymmetrical in cross section and defined by two spaced apart surfaces, at least one surface being irregular shaped and different in configuration than the other surface, and the interior of the hollow member containing a bladder sufficiently resilient to have expanded to the inner faces of the two surfaces during molding of the member.