Independent temperature and apparent color control...

Details Independent temperature and apparent color control... Independent temperature and apparent color control...

2007-05-08

2007-05-08

Gregory, Bernarr E. (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Radio wave absorber

For camouflage

C342S001000, C342S002000, C342S004000, C342S013000, C342S014000, C114S015000

Reexamination Certificate

active

11000034

ABSTRACT:
An apparatus for adaptive camouflage with independent control of both temperature and apparent color. The apparatus has cells or individual pixels behind a transparent outer layer. The temperature of the outer layer is controlled by a heat transfer fluid flowing in a closed circuit in each cell, the fluid being cooled or heated by Pelletier elements located behind the assembly. Color changes can be activated separately at the back of the transparent layer by the rotation of metallic triangles whose sides are covered with various color paints, the triangles being located behind the transparent layer. Radar absorption is obtained by the transparent layer and heat transfer fluid and by the selective orientation of the metallic triangles in various directions. The apparent signature of the assembly can then be varied by adapting the signature of the various cells to current environmental conditions when background conditions alter.

REFERENCES:
patent: 1463108 (1923-07-01), Willison et al.
patent: 1466776 (1923-09-01), White
patent: 1551541 (1925-09-01), Collins
patent: 1603938 (1926-10-01), Dobbins
patent: 2388646 (1945-11-01), Ryan
patent: 3304638 (1967-02-01), Grandell et al.
patent: 3367049 (1968-02-01), Noreen
patent: 6927724 (2005-08-01), Snaper

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