초록 ▼

A composite bicycle frame having at least a portion of the frame walls reinforced with an internal layer of honeycomb material is presented. The honeycomb material is essentially sandwiched between interior and exterior sections of the frame wall, with the interior and exterior sections of the frame

A composite bicycle frame having at least a portion of the frame walls reinforced with an internal layer of honeycomb material is presented. The honeycomb material is essentially sandwiched between interior and exterior sections of the frame wall, with the interior and exterior sections of the frame wall each being comprised of a plurality of overlaid layers composite material. Each layer of composite material is comprised of a multiplicity of high strength, unidirectional carbon fibers embedded in an epoxy resin. Several layers of composite material are stacked on top of each other and arranged so that the fibers in one layer cross over the fibers in an adjacent layers. The layers are cut into shapes and molded together using a cavity mold and internal pressure bladder in order to construct a substantially hollow, unitary frame member.

대표청구항 ▼

[ What is claimed is:] [1.] A bicycle frame member comprising:frame walls defining a substantially hollow, unitary frame member, at least a portion of said frame walls being comprised of:an exterior wall section;an interior wall section; and,an intermediate layer of reinforcing material sandwiched b

[ What is claimed is:] [1.] A bicycle frame member comprising:frame walls defining a substantially hollow, unitary frame member, at least a portion of said frame walls being comprised of:an exterior wall section;an interior wall section; and,an intermediate layer of reinforcing material sandwiched between said interior and exterior walls sections;said interior and exterior wall sections each being comprised of a plurality of overlaid layers of composite material, with each individual layer of said composite material being comprised of a multiplicity of unidirectional, small diameter carbon fibers of high modulus and high tensile strength embedded in a resin matrix, said layers being arranged so that the fibers of any one layer cross over the fibers in an adjacent layer; and,the intermediate layer of reinforcing material comprises a synthetic honeycomb material, different froms aid interior and exterior material, composed of wall segments forming a plurality of cell structures, said wall segments being substantially perpendicular to the unidirectional fibers in said interior and exterior wall sections of said frame member.