Title:
NIGHT VISION AND AUDIO SIGNAL REDUCTION SYSTEM
Document Type and Number:
WIPO Patent Application WO2005012825
Kind Code:
A3
Abstract:
A surface configuration obscures an object from detection by night vision devices, ultraviolet devices and infrared devices. The surface configuration is three dimensional, having spaced inner and outer surfaces. A wall defines a plurality of enclosed cells, and projections extend from the inner surface within the cells. The cells can be hexagonal, round or otherwise shaped. The projections can be flat sided or curved. The shapes of the cells and materials used provide sound muffling.
Inventors:
TRACY RICHARD J
Application Number:
PCT/US2004/022987
Publication Date:
June 09, 2005
Filing Date:
July 16, 2004
Export Citation:
Assignee:
ILLINOIS TOOL WORKS (US)
International Classes:
F41H3/00; F41H3/02; G02B5/02; (IPC1-7): G02B23/00; G02B13/20
Foreign References:
| US5763049A | 1998-06-09 | |||
| US5861990A | 1999-01-19 |
Other References:
See also references of EP 1649315A4
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