Lightweight sandwich panel

Details Lightweight sandwich panel Lightweight sandwich panel

1990-02-02

1993-01-26

Loney, Donald J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Nonplanar uniform thickness material

428 72, 428 76, 428116, 428118, 428120, 428166, 428170, 428172, 428179, 428182, 428218, 428913, 52785, 52792, 52799, 52806, 52808, 52809, B32B 312, E04C 254

Patent

active

051821583

ABSTRACT:
A very lightweight sandwich panel is constructed using as the core layer a very thin plastic sheet that has been preformed with projections having broad bonding areas on their free ends for chemically cementing to one outer layer of the panel and with areas between the projections for bonding to the other outer layer. The projections may be made of different cross-sectional shapes, heights, spacings, tilts, profiles, etc., to produce different characteristics in the panel. Differences may even be made in a given sheet to produce a panel having different characteristics in various portions, including shape and function. These characteristics can be predetermined, and the panels may therefore be computer designed. Special panel applications such as airplane wings and thermal boards are comtemplated.

REFERENCES:
patent: 3013641 (1961-12-01), Compton
patent: 3227598 (1966-01-01), Robb
patent: 3388522 (1968-06-01), Lowes
patent: 3525663 (1970-08-01), Hale
patent: 3589972 (1971-06-01), Grey et al.
patent: 3865679 (1975-02-01), Hal
patent: 3876492 (1975-04-01), Schott
patent: 3935357 (1975-01-01), Padovani
patent: 4348442 (1982-09-01), Figge
patent: 4461665 (1984-07-01), Schertler

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