Composite member having increased resistance to delamination and method of making same
August 28, 2018. 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 References 3768760 Composite structure Hybrid composite structures Cross reinforcement in a graphite-epoxy laminate Exact involute ply patterns Composite tape placement apparatus with natural path generation means Method for the design and construction of composite parts Automated design of structures using a finite element database Method and apparatus for the design and construction of composite parts Method for alignment of a representative surface to an actual surface for a tape laying machine InventorsApplicationNo. 143638 filed on 08/28/1998US Classes:428/106, Wood grain244/117R, AIRCRAFT STRUCTURE244/119, Fuselage and body construction244/131, Joints and connections244/133, Materials of construction428/76, Complete cover or casing428/109, With additional layer(s)428/110, On each side of strands or strand-portions428/113, Fibers428/122, Channel-shaped edge component (e.g., binding, etc.)428/192, Edge feature428/193, Including layer embodying mechanically interengaged strands, strand portions or strand-like strips (e.g., weave, knit, etc.)428/911PENETRATION RESISTANT LAYERExaminersPrimary: Ahmad, NasserAttorney, Agent or FirmInternational ClassB32B 005/12AbstractA composite member having increased resistance to delamination includes a reinforcing wrap of fiber-matrix composite material which is encircled about the member so that the edge surfaces of the member are covered by the wrap. The wrap includes fibers which are oriented from about -60° to about +60° relative to the direction along which the reinforcing wrap is wrapped about the member. The fibers of the reinforcing wrap impart increased third-axis or Z-direction strength at the edges of the member where interlaminar tensile stresses are greatest.Field of SearchComplete cover or casingWith additional layer(s) Fibers Wood grain Wound or wrapped core or coating (i.e., spiral or helical) Fiber or fibers wound around each other or into a self-sustaining shape (e.g., yarn, braid, fibers shaped around a core, etc.) On each side of strands or strand-portions Edge feature Including layer embodying mechanically interengaged strands, strand portions or strand-like strips (e.g., weave, knit, etc.) Noninterengaged fibered material encased (e.g., mat, batt, etc.) Channel-shaped edge component (e.g., binding, etc.) PENETRATION RESISTANT LAYER Fold at edge SHEETS OR WEBS EDGE SPLICED OR JOINED Propeller making Utilizing hollow tube blank Composite blade Laminated, embedded member or encased material AIRCRAFT STRUCTURE Fuselage and body construction Joints and connections Materials of construction | |
