Complex-shaped carbon fiber structural member and its method of manufacture
July 3, 2022. 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 ReferencesReinforced ceramic structure Dual and single seat composite bicycle frames and fabrication methods therefore Method of forming a hybrid composite sandwich structure Method making a composite bicycle frame using composite lugs Suspension for a bicycle having a Y shaped frame Honeycomb reinforced composite fiber bicycle frame Composite bicycle frame and methods for its construction Composite member having increased resistance to delamination and method of making same Patent #: 6277463 InventorsAssigneeApplicationNo. 10190172 filed on 07/03/2002US Classes:428/81, PERIMETER OR CORNER STRUCTURE OF SHEET (EXCLUDING MERE RECTANGULAR)428/192, Edge feature428/131, Including aperture428/292.1, Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity428/300.7, Two or more layers428/113, Fibers280/231, Plural occupant propelled264/46.5, Uniting spaced preforms or solidified layers by introducing foamable material therebetween156/245, In configured mold280/283, Yielding280/288.3, Hollow shell frames280/281.1, Frames and running gear428/106Wood grainExaminersPrimary: Cole, Elizabeth M.Attorney, Agent or FirmInternational ClassB32B005/12AbstractA complex-shaped carbon fiber structural member including a multiplicity of carbon epoxy fiber bundles surrounded by a unidirectional carbon fiber rope and its method of manufacture are provided. The fiber bundles are formed from large sheets of unidirectional carbon fiber materials cut into small strips, with the strips then being randomly oriented in the form of a sheet of randomized fiber bundles. The strips, and the fibers in the strips, cross over one another so as to form a layer of material that has a relatively uniform strength in all directions. The sheets of randomized carbon epoxy fiber bundles are cut into preforms for the structural part being made. Several preforms are stacked on top of each other in order to provide material to make the part of a desired thickness. To reinforce the bundles within the part, particularly along its outer periphery, the preforms are wrapped prior to molding with an elongated rope of unidirectional carbon fibers. The preforms and unidirectional rope are assembled together in an appropriate mold, which is then subject to heat and pressure for molding and curving the part.Other References
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