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US 4,772,760 AGranted
Nonorthogonal EMP shielding elements
AssigneePPG Industries, Inc.
InventorCharles R. Graham
Life of this patent
Estimating the term…
Abstract
Nonorthogonal grid patterns and curved transparencies having nonorthogonal grid patterns comprising a matrix of interconnected circles and arcs are described for use as electromagnetic pulse shielding elements which diminish "starburst" light interference distortions and readily conform to compound curvatures and complex shapes.
Claims20
A transparent article comprising:
- (a) a transparent substrate;
- and
- (b) a nonorthogonal grid pattern on a surface of said substrate wherein said pattern comprises a series of closed loops, equally spaced and interconnected by arcs.
A transparent article comprising:
- (a) a curved transparent substrate;
- and
- (b) a nonorthogonal grid patern on a surface of said substrate, wherein said pattern comprises a series of closed loops, equally spaced and interconnected by arcs.
Dependencies are inferred from the claim text.