Method of forming a hybrid composite sandwich structure
Patent 5271879 Issued on December 21, 1993. Estimated Expiration Date: 
February 19, 2012. 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.
February 19, 2012. 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 ReferencesComposite panel Structural materials and components Elastic core composite structure and method of making same Patent #: 4413822 InventorsAssigneeApplicationNo. 839121 filed on 02/19/1992US Classes:264/46.5, Uniting spaced preforms or solidified layers by introducing foamable material therebetween156/79, Subsequent to assembly of laminae156/309.6, Involving defined plastic flow or melting of entire lamina264/54, Chemical blowing264/257, One component is a fibrous or textile sheet, web, or batt264/258Joining a plurality of superposed fibrous or textile layersExaminersPrimary: Kuhns, Allan R.Attorney, Agent or FirmInternational ClassB29C 067/22AbstractCurrent processes for the formation of hybrid composite sandwich structures are expensive, often result in weak unsound products, require time and labor intensive secondary operations and are not readily adaptable for custom design work. These and other problems are solved by a relatively simple and inexpensive process producing hybrid composite sandwiched structures which includes placing core materials 24 sandwiched by multiples layers including at least one ceramic layer 46 or metallic layer 38 and having polymeric films 32, 34, 40, 42 positioned between substantially all the layers in a mold cavity 18. When the contents of the mold cavity 18 are heated to consolidate this structure, the polymeric films 32, 34, 40, 42 melt and act as an adhesive between the layers of the structure formed.Field of SearchJoining a plurality of superposed fibrous or textile layersOne component is a fibrous or textile sheet, web, or batt Composite article making Uniting spaced preforms or solidified layers by introducing foamable material therebetween Chemical blowing Subsequent to assembly of laminae Involving defined plastic flow or melting of entire lamina | |
