Metal matrix composite structural panel construction
Patent 4411380 Issued on October 25, 1983. Estimated Expiration Date: 
June 30, 2001. 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 30, 2001. 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 3020946 3084770 3388522 3401025 InventorsAssigneeApplicationNo. 06/280155 filed on 06/30/1981US Classes:228/181, Honeycomb structure228/157, Spreading or expanding work between bond joints (e.g., honeycomb or heat exchanger making, etc.)228/190, Of concurrently bonded stacked laminae228/212, With clamping or holding244/119, Fuselage and body construction244/123.13, Honeycomb in skin panels428/116, Honeycomb-like428/593, Honeycomb, or with grain orientation or elongated elements in defined angular relationship in respective components (e.g., parallel, inter- secting, etc.)52/793.1Multicellular coreExaminersPrimary: Hunt, Brooks H.Assistant: Okamoto, Joel P. Attorney, Agent or FirmInternational ClassB32B 3/12 (20060101)AbstractLightweight capped honeycomb stiffeners 18 for use in fabricating metal or metal/matrix exterior structural panels 14 on aerospace type vehicles 10 and the process for fabricating same are disclosed. The stiffener stringers are formed in sheets (FIG. 6), cut to the desired width and length and brazed in spaced relationship to a skin 16 (FIG. 2) with the honeycomb material serving directly as the required lightweight stiffeners and not requiring separate metal encasement for the exposed honeycomb cells.Other References
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