Back to results
US 4,356,678 AGranted
Composite structure
AssigneeUnited Technologies Corporation
InventorsMerritt B. Andrews, Edward A. Rothman
Life of this patent
Estimating the term…
Abstract
A structural composite panel comprises a pair of filament-reinforced composite facing sheets and a ruffled, corrugated core secured between the facing sheets. The core has corrugations each with an axis having periodic oscillations in plane of the core and with the axis generally normal to filament direction.
Claims6
A structural composite panel comprising:
- first and second facing sheets, each of said facing sheets comprising a plurality of high modulus, high strength reinforcing filaments embedded in a matrix material;
- and
- a ruffled corrugated core secured between said first and second facing sheets, said core having a plurality of corrugations formed by parallel alternating ridges and grooves, each of said ridges and grooves having a longitudinal axis having periodic oscillations in the plane of said core.
Dependencies are inferred from the claim text.