Composite bicycle frames and methods of making same
Patent 4889355 Issued on December 26, 1989. Estimated Expiration Date: 
June 16, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 16, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorApplicationNo. 207631 filed on 06/16/1988US Classes:280/281.1, Frames and running gear264/258, Joining a plurality of superposed fibrous or textile layers264/314Utilizing fluid-expansible moldExaminersPrimary: Pekar, John A.Attorney, Agent or FirmForeign Patent References
International ClassB62K 019/16AbstractDisclosed is an improved bicycle frame of composite materials and a method of molding generally hollow components and assemblies for such a bicycle frame. The entire bicycle frame may be one integrally united piece of molded composite materials, such as unidirectional structural fibers impregnated with a heat curable synthetic resin. Layers of the composite material may be shaped to form an uncured frame shell. This shell is compressed against the surfaces of a mold by an internal pressing member, such as an inflatable bladder routed to the outside through a passageway passing through a modified bottom bracket sleeve or a modified head tube sleeve. The shell is then cured while under compression in the mold.Other References
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