For Camouflage Patents (Class 342/3)
  • Patent number: 10519583
    Abstract: Disclosed is a camouflage fabric which simplifies a preparation process of warps and wefts so as to assure convenience in warp and weft preparation and acquires combinations of various patterns and colors using a three-ply fabric structure so as to satisfy aesthetics, i.e., one of functions of clothing, and to have an excellent camouflaging effect. Dyed yarns of a dark color and dyed yarns of a light color are alternately arranged as the warps, dyed yarns of three colors differing from the colors of the warps are used as the wefts, the warps and the wefts are woven into the camouflage fabric of a three-ply jacquard texture using a jacquard loom and, thus, the camouflage fabric may have combinations of various patterns and colors.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: December 31, 2019
    Assignee: DONG-A TOL CO., LTD.
    Inventor: Jae Hyuk Moon
  • Patent number: 10164326
    Abstract: A frequency-selective composite structure includes a laminate panel, and a frequency-selective filter including a plurality of frequency-selective surface elements coupled to an exterior surface of the laminate panel and arranged in a frequency-selective surface pattern, wherein each one of the frequency-selective surface elements includes a nanomaterial composite.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: December 25, 2018
    Assignee: The Boeing Company
    Inventors: Manny S. Urcia, Daniel J. Braley, Ronald O. Lavin
  • Patent number: 9961812
    Abstract: A method and apparatus for producing a radio frequency absorber (RFA) or perfect microwave absorber (PMA) skin is described herein. A metamaterial layer may be applied to a low dielectric substrate. Resistive and capacitive components may then be added to the metamaterial layer. The metamaterial layer may then be formed into an RFA or PMA skin, which may then be applied to a multi-layered assembly for absorption of electromagnetic radiation in a frequency range such as the microwave frequency spectrum in a final product including but limited to cell phones, communication devices, or other electronic devices.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: May 1, 2018
    Assignee: FLEXTRONICS AP, LLC
    Inventor: Peter Suorsa
  • Patent number: 9208913
    Abstract: The present invention relates to a wave-absorbing metamaterial, comprising a substrate which is provided with two opposite lateral surfaces, wherein a plurality of periodically arranged artificial metal microstructures are attached on at least one of the two opposite lateral surfaces; when an electromagnetic wave having an incident direction vertical to the two opposite lateral surfaces of the substrate is transmitted to the wave-absorbing metamaterial, a relative permittivity of the metamaterial is substantially equal to a relative magnetic conductivity of the metamaterial.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: December 8, 2015
    Assignee: KUANG-CHI INNOVATIVE TECHNOLOGY LTD.
    Inventors: Ruopeng Liu, Lin Luan, Zhiya Zhao, Wenjian Wang
  • Patent number: 9134465
    Abstract: Systems according to the present disclosure provide one or more surfaces or structures that function as power transferring surfaces or structures (deflective shields) for which at least a portion of which includes or is composed of “fractal cells” placed sufficiently closed close together to one another so that a surface (plasmonic) wave causes near or similar replication of current present in one fractal cell in an adjacent fractal cell. A fractal of such a fractal cell can be of any suitable fractal shape and may have two or more iterations. The fractal cells may lie on a flat or curved sheet or layer and be composed in layers for wide bandwidth or multibandwidth transmission. The surfaces and/or structures can also provide cloaking of objects inside the shields.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: September 15, 2015
    Assignee: Fractal Antenna Systems, Inc.
    Inventor: Nathan Cohen
  • Patent number: 9108388
    Abstract: Disclosed is an electromagnetic wave absorbent which exhibits high electromagnetic wave absorption performance over a wide band. The electromagnetic wave absorbent contains a conductive fiber sheet which is obtained by coating a fiber sheet base with a conductive polymer and has a surface resistivity within a specific range. The conductive fiber sheet is formed by impregnating a fiber sheet base such as a nonwoven fabric with an aqueous oxidant solution that contains a dopant, and then bringing the resulting fiber sheet base into contact with a gaseous monomer for a conductive polymer, so that the monomer is oxidatively polymerized thereon.
    Type: Grant
    Filed: December 28, 2009
    Date of Patent: August 18, 2015
    Assignee: TAYCA CORPORATION
    Inventors: Yoshihiro Egami, Kunio Suzuki, Takao Tsuduki
  • Patent number: 8890101
    Abstract: An electromagnetic wave absorbing device includes a ground layer formed of a metal conductor layer, a dielectric layer formed on the ground layer, and a unit cell pattern layer which is formed on the dielectric layer and made of resistive materials, wherein at least two electromagnetic bandgap-based unit cell patterns are periodically arranged on the unit cell pattern layer.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: November 18, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventor: Dong-Uk Sim
  • Patent number: 8836569
    Abstract: A synthetic aperture radar's surveillance is defeated by electronic camouflage that employs a protective shield to cover an intended target. The shield intercepts and modifies the interrogating radar pulses by modulating incident radar pulses to produce radar echoes shifted in Doppler frequency, whereby the returned echoes give a false depiction of the target, even to smearing the radar display. New structures are presented that exhibit variable reflectivity and variable dielectric characteristics of particular use in the foregoing and other electronic systems.
    Type: Grant
    Filed: July 11, 1994
    Date of Patent: September 16, 2014
    Assignee: McDonnell Douglas Corporation
    Inventor: Jesse Clopton James
  • Patent number: 8779964
    Abstract: A selectively reflective construct, and a method for making the construct, are described. In one embodiment reflectance, transmission and absorption properties may be controlled in multiple electromagnetic bands. A construct is described comprising a) a thermally transparent, visually opaque substrate comprising a polymeric material and a colorant, and b) a thermally reflective layer comprising a low emissivity component which is optionally transparent to radar signal.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: July 15, 2014
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: William D. Kelsey, Gregory D. Culler, Emmanuel Gustav Van-Dyck, John D. Holcombe, Edward C. Gunzel
  • Publication number: 20140125506
    Abstract: The invention pertains to a device for signature adaptation, comprising at least one surface element (100; 300; 500) arranged to assume a determined thermal distribution, wherein said surface element comprises at least one temperature generating element (150; 450a, 450b, 450c) arranged to generate at least one predetermined temperature gradient to a portion of said at least one surface element. Said at least one surface element (100; 300; 500) comprises at least one radar suppressing element (190), wherein said at least one radar suppressing element (190) is arranged to suppress reflections of incident radio waves. The invention also concerns an object provided with a device for signature adaptation.
    Type: Application
    Filed: June 5, 2012
    Publication date: May 8, 2014
    Applicant: BAE Systems Hägglunds Aktiebolag
    Inventor: Peder Sjölund
  • Publication number: 20140111364
    Abstract: The invention pertains to a device for signature adaptation, comprising at least one surface element (100; 300; 500) arranged to assume a determined thermal distribution, wherein said surface element comprises at least one temperature generating element (150; 450a, 450b, 450c) arranged to generate at least one predetermined temperature gradient to a portion of said at least one surface element. Said surface element (100; 300; 500) comprising at least one display surface (50), wherein said display surface (50) is arranged to radiate at least one predetermined spectrum. The invention also pertains to a method for signature adaptation and an object such as a craft provided with the device according to the invention.
    Type: Application
    Filed: June 4, 2012
    Publication date: April 24, 2014
    Applicant: BAE Systems Hägglunds Aktiebolag
    Inventor: Peder Sjölund
  • Patent number: 8646373
    Abstract: A system for reducing the effects of a blast wave includes armor plating configured to face a supersonic blast wave. The armor plating has a surface consisting of alternating tall and short peaks with valleys between the peaks. The peaks and valleys are positioned such that the supersonic blast wave reflects from the side surfaces of the tall peaks as a regular reflection that at least partially suppresses Mach reflection of the supersonic wave caused by the short peaks and the valleys. The surface may also be designed to not trap reflected waves. The valleys can be parabolic shaped to deflect and/or dissipate transonic flow that follows the blast wave front.
    Type: Grant
    Filed: May 4, 2009
    Date of Patent: February 11, 2014
    Assignee: Nova Research, Inc.
    Inventors: Yan R. Kucherov, Graham K. Hubler
  • Publication number: 20130335254
    Abstract: Structures and methods for cloaking an object to electromagnetic radiation at the microwave and terahertz frequencies include disposing a plurality of graphene sheets about the object. Intermediate layers of a transparent dielectric material can be disposed between graphene sheets to optimize the performance. In other embodiments, the graphene can be formulated into a paint formulation or a fabric and applied to the object. The structures and methods absorb at least a portion of the electromagnetic radiation at the microwave and terabyte frequencies.
    Type: Application
    Filed: June 22, 2012
    Publication date: December 19, 2013
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: PHAEDON AVOURIS, ALBERTO V. GARCIA, CHUN-YUNG SUNG, FENGNIAN XIA, HUGEN YAN
  • Patent number: 8610617
    Abstract: Structures and methods for cloaking an object to electromagnetic radiation at the microwave and terahertz frequencies include disposing a plurality of graphene sheets about the object. Intermediate layers of a transparent dielectric material can be disposed between graphene sheets to optimize the performance. In other embodiments, the graphene can be formulated into a paint formulation or a fabric and applied to the object. The structures and methods absorb at least a portion of the electromagnetic radiation at the microwave and terabyte frequencies.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: December 17, 2013
    Assignee: International Business Machines Corporation
    Inventors: Phaedon Avouris, Alberto V. Garcia, Chun-Yung Sung, Fengnian Xia, Hugen Yan
  • Patent number: 8564472
    Abstract: In one embodiment of the present invention, a conductive pattern portion formed in a pattern layer functions as an antenna, and, when electromagnetic waves at a predetermined frequency arrive, resonance occurs, and an electromagnetic wave of a specific frequency is introduced into a sheet member. As to the sheet member having the pattern layer, even in a small and thin sheet member, the phase of reflected waves from the reflection area can be adjusted, and thus an area having high electric field intensity due to interference between reflected waves from the reflection area and arriving electromagnetic waves can be set in the vicinity of the antenna element. When the sheet member is disposed between an antenna element and a communication jamming member, an electromagnetic field is generated around the conductive pattern portion, and an electromagnetic energy is supplied from the conductive pattern portion to the antenna element, and therefore receiving power of the antenna element can be increased.
    Type: Grant
    Filed: October 23, 2006
    Date of Patent: October 22, 2013
    Assignee: Nitta Corporation
    Inventors: Haruhide Okamura, Takahiko Yoshida, Masato Matsushita, Yoshiharu Kiyohara, Shinichi Sato, Ryota Yoshihara, Kazuhisa Morita, Hiroaki Kogure
  • Patent number: 8340358
    Abstract: A visual camouflage system that provides at least one of thermal or radar suppression is described. The system includes a vinyl layer having a camouflage pattern on a front surface of the vinyl layer. The camouflage pattern includes a site-specific camouflage pattern. A laminate layer is secured over the front surface of the vinyl layer coating the camouflage pattern to provide protection to the camouflage pattern and strengthen the vinyl layer. One or more nanomaterials are disposed on at least one of the vinyl layer, camouflage pattern, or the laminate to provide at least one of thermal or radar suppression.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: December 25, 2012
    Assignee: Military Wraps Research and Development, Inc.
    Inventors: K. Dominic Cincotti, Trevor J. Kracker
  • Publication number: 20120154196
    Abstract: Systems and assemblies for simultaneous adaptive camouflage, concealment and deception are provided. The assemblies that can be used in the systems include a vinyl substrate layer and a miniaturized thermoelectric device array secured to the vinyl substrate layer. The miniaturized thermoelectric device array is configured to provide an adaptive thermal signature to a side of the miniaturized thermoelectric device array that faces outward from the vinyl substrate layer. A flexible image display matrix can be secured on the vinyl substrate layer. The flexible image display matrix can be configured to display visual images. A laminate layer can be secured over the vinyl substrate layer covering the flexible image display matrix and the miniaturized thermoelectric device array to provide protection and strengthen the assemblies. One or more nanomaterials can be disposed on the vinyl substrate layer or the laminate layer to provide thermal or radar suppression.
    Type: Application
    Filed: December 12, 2011
    Publication date: June 21, 2012
    Applicant: MILITARY WRAPS RESEARCH AND DEVELOPMENT, INC.
    Inventors: K. Dominic Cincotti, Trevor J. Kracker
  • Patent number: 8077071
    Abstract: Systems and assemblies for simultaneous adaptive camouflage, concealment and deception are provided. The assemblies that can be used in the systems include a vinyl substrate layer and a miniaturized thermoelectric device array secured to the vinyl substrate layer. The miniaturized thermoelectric device array is configured to provide an adaptive thermal signature to a side of the miniaturized thermoelectric device array that faces outward from the vinyl substrate layer. A flexible image display matrix can be secured on the vinyl substrate layer. The flexible image display matrix can be configured to display visual images. A laminate layer can be secured over the vinyl substrate layer covering the flexible image display matrix and the miniaturized thermoelectric device array to provide protection and strengthen the assemblies. One or more nanomaterials can be disposed on the vinyl substrate layer or the laminate layer to provide thermal or radar suppression.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: December 13, 2011
    Assignee: Military Wraps Research and Development, Inc.
    Inventors: K. Dominic Cincotti, Trevor J. Kracker
  • Patent number: 8030228
    Abstract: A cover for camouflage against electromagnetic radiation. According to the invention, the cover includes a random set of puckered features in relief, these being formed by a camouflage net associated with a flexible dielectric mesh.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: October 4, 2011
    Assignee: MBDA France
    Inventor: Edouard Flavin
  • Patent number: 8031104
    Abstract: A microwave absorber, especially for high temperature applications, has at least one resistive sheet and at least one dielectric layer. The resistive sheet has a material of construction that is a MAX phase material.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: October 4, 2011
    Assignee: Totalförsvarets Forskningsinstitut
    Inventor: Anna Jänis
  • Patent number: 8017217
    Abstract: A material of variable emissivity includes a first metallic layer having a first aperture, a second metallic layer having a second aperture, and a variable dielectric layer interposed between the first metallic layer and the second metallic layer.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: September 13, 2011
    Assignee: HRL Laboratories, LLC
    Inventors: Daniel J. Gregoire, Deborah J. Kirby
  • Patent number: 8013776
    Abstract: A radar camouflage fabric comprising a base fabric layer and a conductive garnish fabric layer attached to the base fabric layer. The conductive garnish fabric layer comprises a conductive polymer coating and a plurality of holes. The radar camouflage fabric has an average microwave transmission of less than 50% at 6-8 GHz and the conductive garnish fabric layer has an electrical surface resistance less than the electrical surface resistance of the base fabric layer.
    Type: Grant
    Filed: May 7, 2007
    Date of Patent: September 6, 2011
    Assignee: Milliken & Company
    Inventor: Andrew D. Child
  • Patent number: 7999720
    Abstract: One aspect relates to camouflaging an object by affecting a presentation at least partially using at least one positional element based at least in part on a position of the at least one positional element. Another aspect relates to configuring at least a first camouflage positional element and at least a second camouflage positional element to act as a decoy presentation, an active chaff, and/or a smart chaff. Another aspect relates to providing at least one positional element that can deceive, confuse, defeat, or lead one or more sensors towards or away from a target, such as to act as chaff, one or more flares, fog, one or more decoys, or a combination thereof. Another aspect relates to determining a suitable camouflage for at least one camouflage positional element at least partially considering a background for the at least one camouflage positional element, and affecting a presentation using the at least one camouflage positional element at least partially based on the suitable camouflage.
    Type: Grant
    Filed: February 13, 2006
    Date of Patent: August 16, 2011
    Assignee: The Invention Science Fund I, LLC
    Inventors: Edward K. Y. Jung, Royce A. Levien, Robert W. Lord, Mark A. Malamud, John D. Rinaldo, Jr.
  • Publication number: 20110095931
    Abstract: A radar camouflage fabric comprising a base fabric layer and a conductive garnish fabric layer attached to the base fabric layer. The conductive garnish fabric layer comprises a conductive polymer coating and a plurality of holes. The radar camouflage fabric has an average microwave transmission of less than 50% at 6-8 GHz and the conductive garnish fabric layer has an electrical surface resistance less than the electrical surface resistance of the base fabric layer.
    Type: Application
    Filed: May 7, 2007
    Publication date: April 28, 2011
    Inventor: Andrew D. Child
  • Patent number: 7834799
    Abstract: Various embodiments provide systems and methods for fabricating composite laminate structures with co-laminated radar absorbing material. An example embodiment includes providing a component part fabricated from composite laminate and having an inside surface and an outside surface; providing a portion of radar absorbing material (RAM) having an inside surface and an outside surface; positioning the outside surface of the component part against the inside surface of the portion of RAM to form an assembly; and applying pressure to the assembly thereby causing the portion of RAM to bond to the outside surface of the component part.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: November 16, 2010
    Assignee: Composite Engineering, Inc.
    Inventor: Cliff Wells
  • Patent number: 7746264
    Abstract: An infrared camouflage coating system for application to the strategic surfaces of jet engine components comprised of a metal alloy substrate having an oxidized surface and a ferrous sulfide containing silicate glass bonded thereto.
    Type: Grant
    Filed: July 11, 1978
    Date of Patent: June 29, 2010
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Hyman Kirtchik
  • Patent number: 7733263
    Abstract: A camouflage coating system for application to the surfaces of jet engine components in order to reduce their level of emitted energy there by rendering them undetectable by infrared detection systems. The camouflage coating comprises a multilayer system having a first diffusion barrier of nickel aluminide applied to the substrate surface. A second silver reflective layer superimposed on the diffusion barrier layer and a glass-ceramic protective overlay superimposed on the silver reflective layer.
    Type: Grant
    Filed: July 11, 1978
    Date of Patent: June 8, 2010
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Hyman Kirtchik
  • Patent number: 7642948
    Abstract: A reflective layer for attenuating electromagnetic radiation, the layer comprising at least one reflective component, the latter being selected from the group containing the following substances: carbon particles or fibers, in particular carbon black and/or graphite and/or an electrically conductive graphite compound, metal particles and/or fibers, in particular copper, aluminum, steel, titanium and/or iron particles of fiber and metal alloy particles. The reflective layer is characterized in that it attenuates electromagnetic radiation in a 200Hz to 10 Ghz range by more than 10Db, that it is watertight and permeable to water vapor, in addition to being resistant to the elements and designed to produce a potential compensation. The invention also relates to a method for assembling the reflective layer.
    Type: Grant
    Filed: August 12, 2004
    Date of Patent: January 5, 2010
    Assignee: Ewald Dorken AG
    Inventors: Gilles Schwaab, Jörn Schröer, Björn Lunau
  • Patent number: 7551117
    Abstract: The present invention provides an all-weather radio wave absorber having reflector capable of smoothly attenuating harmful microwave or millimeter wave from 400 MHz to 100 GHz generated from various electronic devices so that bad effects on human body or electronic device can be eliminated. The all-weather radio wave absorber having reflector comprises a laminated radio wave absorbing composite comprising a foamed upper radio wave absorber 1 with a rugged surface or a flat surface including conductive particles such as carbon particles, ferrite particles or the like in continuous foams 2 formed therein, one or more foamed intermediate planar radio wave absorbers 3 including conductive particles such as carbon particles 7, ferrite particles or the like in continuous foams 2 formed therein, a thin radio wave reflector 4 at the bottom, and a flexible cover for wrapping the laminated absorbers and reflector together.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: June 23, 2009
    Assignee: Ubiquitous Environment Company
    Inventor: Takahito Asaba
  • Patent number: 7511653
    Abstract: A radar wave camouflage structure is disclosed. The radar wave camouflage structure comprises a substrate; a first layer on the substrate, comprising a first polymer matrix; magnetic nanoparticles dispersed in the first polymer matrix, wherein the magnetic nanoparticles comprise a mixture of Fe3O4, Fe3O4-4C carbide, Fe3O4—Ni composite and Fe2O3; a second layer on the first layer, comprising a second polymer matrix; and carbon black dispersed in the second polymer matrix.
    Type: Grant
    Filed: July 20, 2007
    Date of Patent: March 31, 2009
    Inventors: Fu-Sheng Yu, Wen-Lie Chang
  • Publication number: 20090021415
    Abstract: A radar wave camouflage structure is disclosed. The radar wave camouflage structure comprises a substrate; a first layer on the substrate, comprising a first polymer matrix; magnetic nanoparticles dispersed in the first polymer matrix, wherein the magnetic nanoparticles comprise a mixture of Fe3O4, Fe3O4—4C carbide, Fe3O4—Ni composite and Fe2O3; a second layer on the first layer, comprising a second polymer matrix; and carbon black dispersed in the second polymer matrix.
    Type: Application
    Filed: July 20, 2007
    Publication date: January 22, 2009
    Inventors: Fu-Sheng Yu, Wen-Lie Chang
  • Patent number: 7403152
    Abstract: An antenna structure including an antenna 10 with an outer main surface 11, where said antenna 10 is integrated in a surface of a surrounding material 20. Further comprising a transition zone 30 arranged along the perimeter of the main surface 11 and overlapping the main surface, where the transition zone 30 comprises a layer of a resistive material with a resistivity that varies with the distance from an outer perimeter of the transition zone 30 to enable a smooth transition of the scattering properties between the antenna 10 and the surrounding material 20.
    Type: Grant
    Filed: February 24, 2006
    Date of Patent: July 22, 2008
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Mats Gustafsson
  • Patent number: 7345616
    Abstract: A radar-absorbing panel (9) includes a honeycomb core (11) and a lower skin (13), where the lower skin (13) is attached to the bottom of the honeycomb core (11). The honeycomb core (11) is made up of individual cells (15), which may be filled with aerogel. The individual cells (15) are approximately ½ of an inch in size with polygonal shape.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: March 18, 2008
    Assignee: Bell Helicopter Textron Inc.
    Inventor: Randy B. Williams
  • Patent number: 7310059
    Abstract: The panes (1) of a naval vessel or military vehicle are often coated with a radar-reflecting layer (20) for reduction of the radar signature of the vessel/vehicle. At the same time this layer increases an enemy's possibility of recognizing the vessel in passive IR reconnaissance since the layer increases the reflectance also for IR radiation to a considerable extent. As a result, the intensity of IR radiation that an enemy receives from the panes is much lower than that from the rest of the vessel, which with signal processing can be used to increase the possibility of recognizing the vessel. According to the invention, it is suggested that the panes (1) on the outer face (8) also have a second layer (21, 22) to increase emittance especially within the IR range 2-20 ?m which is normally used for reconnaissance and the like. This second layer (21, 22) comprises especially two coatings, one of which is active in the IR range 3-5 ?m and the second in the IR range 7-14 ?m.
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: December 18, 2007
    Assignee: Totalforsvarets Forskningsinstitut
    Inventors: Mikael Georgson, Örjan Staaf
  • Patent number: 7301493
    Abstract: A one-way reflective sensor shield with an increased bandwidth meta-materials coating is provided which substantially reduces or eliminates deleterious electronic signatures and backscattering. The one-way reflective sensor shield with meta-materials coating operates according to surface plasmonic coupling phenomena and achieves a mirror-like one-way reflection of electromagnetic signals. In this arrangement, the meta-materials coating is composed of a dielectric material, and the corrugated metal strips are composed of a metallic conductive material with a negative dielectric constant, to allow surface plasmonic coupling between the plasma in the metal and the incident electromagnetic field. Surface plasmons occur at the interface of a material with a positive dielectric constant, such as dielectric surface, with that of a negative dielectric constant, usually a metal or doped dielectric, such as the metal strips. Sensor devices and sensor shielding systems are also provided.
    Type: Grant
    Filed: November 21, 2005
    Date of Patent: November 27, 2007
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Peter R. Canales, Hong-Liang Cui, Alexander Raspopin
  • Patent number: 7271759
    Abstract: A camouflage device for camouflaging specularly reflecting surfaces of an object is formed with function elements for influencing the reflection of radiation from an assumed radiation source. Each function element forms a part of an outer layer and has a pair of individual surfaces on its side facing the radiation source. The individual surfaces extend longitudinally side-by-side, and their surfaces are arranged at an angle to one another. The camouflaging device is arrangeable on the object by means of a mechanism such that it is disposed in front of the reflecting surface; and the angular arrangement of the respectively assigned individual surfaces extends such that the surface normal of a first individual surface is sloped downward, and the surface normal of a second individual surface points more steeply than 80° to the horizontal plane, and their surface courses form an angle of <90° with respect to one another.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: September 18, 2007
    Assignee: EADS Deutschland GmbH
    Inventors: Ralph Bofinger, Alexander Hoffmann
  • Patent number: 7236364
    Abstract: A case for a portable terminal using a color liquid crystal uses a Peltier device to vary the color of the case by means of electrical heating and cooling the interior of the case. The case includes a temperature control apparatus for emitting electrical heat, when an electrical current is applied thereto, and simultaneously cooling the opposite side; a liquid crystal application agent positioned on the upper portion of the temperature control apparatus and adapted to vary the color by means of the electrical heat; and a cooling unit positioned opposite to an upper portion of the temperature control apparatus to cool heat-generating devices inside the terminal.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: June 26, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Sang-Min Lee
  • Patent number: 7215275
    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.
    Type: Grant
    Filed: December 1, 2004
    Date of Patent: May 8, 2007
    Assignee: Her Majesty the Queen as represented by the Minister of National Defence of Her Majesty's Canadian Government
    Inventor: Jean Dumas
  • Patent number: 7035308
    Abstract: Described herein is a method and system for providing a countermeasure against laser detection systems using nanocomponent material that is tailored to cloak or obscure a target from detection by transmitted laser radiation. The nanodot material absorbs and/or down-converts the transmitted laser radiation. Similarly, described herein is a method and system for providing a countermeasure against laser systems intended to blind a target through the use of a specifically engineered nanocomponent material for absorbing and/or down-converting the radiation from the laser system.
    Type: Grant
    Filed: April 11, 2003
    Date of Patent: April 25, 2006
    Assignee: Science Applications International Corporation
    Inventors: Scott Earl McNeil, Martin Joseph Fritts, Roy Reed Heddleston, Martin B. Mark
  • Patent number: 6992314
    Abstract: Disclosed is a device for eliminating electromagnetic waves which consists essentially of an electromagnetic-wave trapping means comprising mainly a coil, and a discharge means made on the opposite end to the basement of the trapping means, wherein the coil having a diameter which gradually decreases from the basement to the opposite end of the trapping means.
    Type: Grant
    Filed: September 4, 2003
    Date of Patent: January 31, 2006
    Assignee: Kabushiki Kaisha Shunkosha
    Inventors: Kazuya Masaki, Ken Hayashibara
  • Patent number: 6927724
    Abstract: Adaptive modification of surface properties such as color, temperature and reflective properties by adjustably varying the temperature of a surface perceived by an observer, utilizing Peltier devices at the surface for temperature adjustment.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: August 9, 2005
    Inventor: Alvin A. Snaper
  • Patent number: 6885332
    Abstract: The present invention is a multi-piece barrel shroud which provides IR signature and radar backscatter reduction over the entire length of the barrel by utilization of special radar absorbing materials and shaped in accordance with commonly known radar signature reduction techniques. The interior of the shroud includes cooling passages for the circulation of ambient air by way of a forced air circulation system which provides IR reduction. To facilitate barrel movement while minimizing weight, the majority of the shroud is stationary and is independent of the gun barrel. At least one other piece of the shroud is attached to the barrel near the muzzle end and designed to move in unison with the muzzle during recoil. The recoiling portion of the shroud is sized to mate with an annular recess within the distal end of the stationary portion so as to provide continuous shielding of the barrel throughout the entire range of recoil displacement.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: April 26, 2005
    Assignee: United Defense, L.P.
    Inventors: Alan W. Panek, John P. Hinsverk
  • Patent number: 6873283
    Abstract: A rapidly deployable camouflage device for concealing recognizable signatures of military objects, comprising a camouflage balloon (1) and a deployment and undeployment device, the latter being equipped with a housing (2) and a fan (3) for inflating the balloon (1) arranged on an opening (4) in the housing. According to the invention, the balloon can be pulled into the housing by means of pull lines (7) secured at one end to the inside of the balloon opposite the opening (4), and at the other end to a motor-driven winding device inside the housing (2). The balloon is thus pulled in in such a way that it is reversed inside the housing, from which state if can then be blown out unreversed as rapidly deployable camouflage.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: March 29, 2005
    Assignee: SAAB Barracuda AB
    Inventor: Johan Zaar
  • Patent number: 6867725
    Abstract: The invention is a protective cover assembly having at least one part for a surface of a structure. In detail, the invention includes a first flexible layer of heat resistant material bonded to the structure having an outer surface with a radar cross-section reducing shape. A second layer of radar signature reducing material is bonded to outer surface of the first flexible layer and includes 1) a film of conductive material bonded to the first flexible layer; and 2) a film of radar absorbing material bonded to the film of conductive material. A third layer of heat resistant material is bonded to the second layer, the third layer made of a dielectric material having a thickness selected to provide a reduction in the radar cross-section of the cover when combined with the film of radar absorbing material.
    Type: Grant
    Filed: June 3, 2003
    Date of Patent: March 15, 2005
    Assignee: Northrop Grumman Corporation
    Inventors: Cary T. Breeden, Vincent M. Ortiz, William A. Moore
  • Publication number: 20040257260
    Abstract: The invention is a protective cover assembly having at least one part for a surface of a structure. In detail, the invention includes a first flexible layer of heat resistant material bonded to the structure having an outer surface with a radar cross-section reducing shape. A second layer of radar signature reducing material is bonded to outer surface of the first flexible layer and includes 1) a film of conductive material bonded to the first flexible layer; and 2) a film of radar absorbing material bonded to the film of conductive material. A third layer of heat resistant material is bonded to the second layer, the third layer made of a dielectric material having a thickness selected to provide a reduction in the radar cross-section of the cover when combined with the film of radar absorbing material.
    Type: Application
    Filed: June 3, 2003
    Publication date: December 23, 2004
    Inventors: Cary T. Breeden, Vincent M. Ortiz, William A. Moore
  • Publication number: 20040169599
    Abstract: The invention relates to a device for exhausting hot gases with a reduced signature, for instance exhaust gases from an exhaust (7, 8) of a tank. The device is of the type comprising a means for mixing (9, 33) of the hot gases with fresh air from the exterior of the tank. To prevent the exhaust from, for instance, reflecting radar radiation and emit IR radiation, the device is provided with a protecting means (10, 34) which is positioned outside at least parts of said means. The device may comprise a space (12, 32) which accommodates preferably the entire means for mixing. The space is defined on the one hand by a shell (11, 31) towards the other spaces of the tank and, on the other hand, by the protecting means towards the exterior. The protecting means has openings (23, 25) for passing preferably a gas mixture from the means to the exterior and fresh air from the exterior to said means.
    Type: Application
    Filed: April 22, 2004
    Publication date: September 2, 2004
    Inventor: Urban Mathiasson
  • Patent number: 6784419
    Abstract: The present invention provides a flame-retardant electromagnetic wave absorber that exhibits excellent formability and electromagnetic wave-absorbing properties, and can be easily assembled and constructed. The electromagnetic wave absorber comprises a wave-absorbing body and a base plate supporting the bottom thereof, wherein the wave-absorbing body is formed in a pyramid shape by fitting polygonal wave-absorbing plates into each other.
    Type: Grant
    Filed: October 26, 2000
    Date of Patent: August 31, 2004
    Assignee: Kabushiki Kaisha Riken
    Inventors: Toshikatsu Hayashi, Yasushi Sakai
  • Publication number: 20040119629
    Abstract: The present invention is a multi-piece barrel shroud which provides IR signature and radar backscatter reduction over the entire length of the barrel by utilization of special radar absorbing materials and shaped in accordance with commonly known radar signature reduction techniques. The interior of the shroud includes cooling passages for the circulation of ambient air by way of a forced air circulation system which provides IR reduction. To facilitate barrel movement while minimizing weight, the majority of the shroud is stationary and is independent of the gun barrel. At least one other piece of the shroud is attached to the barrel near the muzzle end and designed to move in unison with the muzzle during recoil. The recoiling portion of the shroud is sized to mate with an annular recess within the distal end of the stationary portion so as to provide continuous shielding of the barrel throughout the entire range of recoil displacement.
    Type: Application
    Filed: December 20, 2002
    Publication date: June 24, 2004
    Inventor: John P. Hinsverk
  • Publication number: 20040108950
    Abstract: A rapidly deployable camouflage device for concealing recognizable signatures of military objects, comprising a camouflage balloon (1) and a deployment and undeployment device, the latter being equipped with a housing (2) and a fan (3) for inflating the balloon (1) arranged on an opening (4) in the housing. According to the invention, the balloon can be pulled into the housing by means of pull lines (7) secured at one end to the inside of the balloon opposite the opening (4), and at the other end to a motor-driven winding device inside the housing (2). The balloon is thus pulled in in such a way that it is reversed inside the housing, from which state if can then be blown out unreversed as rapidly deployable camouflage.
    Type: Application
    Filed: October 9, 2003
    Publication date: June 10, 2004
    Inventor: Johan Zaar
  • Patent number: 6738007
    Abstract: The radar signature of a vessel is reduced by retrofitting it with an array (10) of elements (15) fastened to surfaces (14b) of the vessel. The elements (15) have planar faces (11-12) so oriented that incident radar signal (20) is reflected away from its angle of incidence.
    Type: Grant
    Filed: May 14, 2002
    Date of Patent: May 18, 2004
    Assignee: Tenix Defence Systems PTY LTD
    Inventor: Philip K. Stafford