Sandwich panel core

Details Sandwich panel core Sandwich panel core

1975-03-03

1977-07-12

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Honeycomb-like

29455LM, 52630, 52675, 244119, 404 35, 404 36, 428178, 428180, 428116, 428593, B32B 312

Patent

active

040355365

ABSTRACT:
A core having a repetitive pattern for ribbing comprising triangles and hexagons where each side of any given hexagon is extended pinwheel fashion toward the appropriate side extensions of each of the six adjoining hexagons, all of the hexagons having sides extending to form pinwheels having the same sense, i.e., clockwise or counterclockwise. The triangles are defined by the extensions and are located between the hexagons. Panels using this core are stiff about all axes and do not have an angle of inherent weakness. The core may be stamped, rolled or vacuum-formed out of many materials including paper, cardboard, sheets of various metals and reinforced or thermosetting plastic.

REFERENCES:
patent: 420656 (1890-02-01), Hayes
patent: 1984653 (1934-12-01), Palmer et al.
patent: 2275575 (1942-03-01), Vrooman
patent: 2572470 (1951-10-01), Gordon
patent: 3011602 (1961-12-01), Ensrud et al.
patent: 3086899 (1963-04-01), Smith et al.
patent: 3137602 (1964-06-01), Lincoln
patent: 3231454 (1966-01-01), Williams
patent: 3419457 (1968-12-01), Bleasdale
patent: 3561177 (1971-02-01), Agro et al.
patent: 3832267 (1974-08-01), Liu
patent: 3834487 (1974-09-01), Hale
Space Grid Structures by John Borrego, The MIT Press, (1968), Cambridge, Mass., p. 182.

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