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公开(公告)号：US20240081032A1
公开(公告)日：2024-03-07
申请号：US18241689
申请日：2023-09-01
发明人： DAN SCHEFFER , KATE REDMOND , TRENTICE BOLAR
IPC分类号： H05K9/00
CPC分类号： H05K9/0007 , H05K9/0081
摘要： The instant disclosure relates to EMI shielding structures. A conductive composition is formed that includes a polymer and graphene present as a 3D-matrix therein. Rectangular EMI shielding panels are formed using the composition. Rectangular EMI shielding panels are affixed orthogonal to each other. The EMI shielding panels are successively overlapped to form a plurality of interconnected EMI shielding planes. The EMI shielding panels are affixed to each other to form a helical EMI shielding structure that folds and unfolds along its center axis. The EMI shielding planes are angularly offset from each other about the center axis to form a helical structure when in the unfolded state. The EMI shielding panels include an encapsulating layer and/or metallic layer. The EMI shielding planes rotate about the center axis when the HES structure transitions between the folded and unfolded states.
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公开(公告)号：US20230335912A1
公开(公告)日：2023-10-19
申请号：US18077684
申请日：2022-12-08
发明人： Larry Hurzon
CPC分类号： H01Q15/145 , F41J2/00 , F42B12/70 , G01S7/38
摘要： A chaff electronic countermeasure device that includes an antenna element positioned on a substrate and in electrical communication with an integrated circuit. The conductive antenna element includes a conductive composition of a conductive polymer and graphene sheets. The device absorbs from a radar source a first radio frequency having a first amplitude. In response to absorbing the first radio frequency, the device reradiates at least a portion of a second radio frequency having a second amplitude toward the radar source, which results in an increased radar cross section of the device as perceived by the radar source. The second amplitude is higher than the first amplitude. The device is configured to be dispersed from a mobile platform. The device is configured to reradiate at least a second radio frequency toward the radar source, thereby resulting in an increased radar cross section of the device as perceived by the radar source
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公开(公告)号：US11722592B2
公开(公告)日：2023-08-08
申请号：US17591559
申请日：2022-02-02
发明人： Jennifer Pinkos , Keren Espina , James A Turney , Sriram Manivannan , Sandy Spence , Dan Scheffer , John Lettow
CPC分类号： H04M1/05 , A41D1/002 , A41D31/08 , H01Q1/273 , H01Q1/368 , H04B1/385 , H04B2001/3855 , H04W84/04 , H04W84/18
摘要： Wearable antenna systems in the form of suspenders are disclosed. Such communications suspenders employ antenna elements having a reduced visual signature while maintaining the load bearing functionality of traditional suspenders. The antenna system communicatively couples to portable radios that operate on different RF frequencies via a communications hub. Some of the antennas elements are dynamically positionable (i.e., swappable, switchable, etc.) on the communications suspenders. A plurality of straps are pivotably coupled to an intermediate portion at one end and a demountable fastener at the other end. The demountable fasteners couple to the user's garment item (e.g., trousers, shorts, skirts, and similar articles). The straps include RF shielding material positioned to reflect RF radiation that emanates from the antenna elements away from the user. The antenna elements are formed using a conductive composition of fully exfoliated graphene sheets present as a percolated network in a polymer matrix.
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公开(公告)号：US20230236281A1
公开(公告)日：2023-07-27
申请号：US17894903
申请日：2022-08-24
发明人： BRIAN LOSEY , SRIRAM MANIVANNAN , Samarpita Chowdhury , JOHN LETTOW , JAMES A TURNEY , JOSIAH HENRY , DAN SCHEFFER , KENNETH FRITSCH , TRENTICE V BOLAR
摘要： Embodiments relate to a sensor node communication system that determines the presence of an object. The system includes man-portable nodes that communicate via a self-organizing LAN. Each node includes a control circuit that has multiple cores, multithreading, and/or parallel processing. The control circuit establishes the LAN, captures an image, determines a presence of a predetermined object in the image using a machine learning algorithm, generates a first notification when presence of the predetermined object is determined, and generates a second notification when the presence is not determined. The control circuit detects an electromagnetic environment, determines unused frequency bands, and adapts a radio working parameter to broadcast in the unused frequency band. Determining the unused frequency bands includes the use of a spectrum sensing method. The control circuit detects an electromagnetic environment, determines unused frequency bands, and adapts a radio working parameter to broadcast in unused frequency bands.
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公开(公告)号：US20230076377A1
公开(公告)日：2023-03-09
申请号：US17929732
申请日：2022-09-05
摘要： Embodiments of the present instant disclosure relate to a puncture resistant sole for a footwear article. The puncture resistant sole includes an insole and outsole. The outsole includes a formation of cleat protrusions and first polymer composition. The cleat protrusions includes a second polymer composition and are removable. The first polymer composition and the second polymer composition each includes graphene sheets dispersed therein. The graphene sheets includes an X-ray diffraction pattern displaying no signature corresponding to graphite or graphite oxide. The insole includes a third polymer composition that includes the graphene sheets dispersed therein. The graphene sheets include an oxygen-containing functional group. The first polymer composition, second polymer composition, and/or third polymer composition includes a tensile strength of 50 lbs. per square inch or greater. The first polymer composition, second polymer composition, and/or third polymer composition comprises a thermal insulation value of at least 0.12 clo.
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公开(公告)号：US10379576B1
公开(公告)日：2019-08-13
申请号：US16107658
申请日：2018-08-21
发明人： John S Lettow
摘要： Embodiments of the present invention relate to flexible wearable electronic devices and associate methods of fabrication. In one embodiment, a general flexible wearable electronic device comprises a flexible article of apparel. A first plurality of components are in communication with the flexible article of apparel and each configured to comprise a radius of curvature of no more than 5 cm when folded. The first plurality of components comprises a display(s) and an input device(s). The first plurality of components are printed on to the flexible apparel using an electrically conductive ink that comprises a polymeric binder and single sheets of graphene comprising a thickness of up to 1 nm. A second plurality of components are in communication with the flexible article of apparel and communicatively coupled to the first plurality of components. The second plurality of components comprises a microprocessor(s) and an electronic device(s) configured for wireless communication.
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公开(公告)号：US20190245261A1
公开(公告)日：2019-08-08
申请号：US16288045
申请日：2019-02-27
CPC分类号： H01Q1/2208 , H01Q1/368 , H01Q1/38 , H01Q7/00 , H01Q9/28
摘要： Embodiments of the present invention relate to a symmetrical RFID antenna and method of formation. In one embodiment, the radio frequency identification antenna comprises a loop element having sides. A first and second conductive elements are in electrical communication with and extend opposite from a middle portion of a side. A third and fourth conductive elements are in electrical communication with and oppositely extend from a second side. A fifth conductive element extends from a vertex of the second conductive element to a vertex of the forth conductive element. The second and/or forth conductive elements comprise a quadrilateral portion. The second and/or forth conductive elements comprise a width that is at least about the length of a side included in the plurality of sides.
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公开(公告)号：US10349178B2
公开(公告)日：2019-07-09
申请号：US14995286
申请日：2016-01-14
发明人： John S Lettow , Dan F Scheffer , Kenneth E Fritsch
摘要： Embodiments of the present invention relate to microphones diaphragms. In one embodiment, a sensor comprising a diaphragm comprised of a composition having a plurality of individual graphene sheets. An emitter formed in a manner to transmit lights towards a surface of the diaphragm. A collector that captures at least a portion of light that is reflected by the diaphragm. A converter is in communication with the detector that converts a signal that is generated by the sensor to a digital signal for processing. The graphene-based composition includes graphene sheets.
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公开(公告)号：US10321593B1
公开(公告)日：2019-06-11
申请号：US15487429
申请日：2017-04-13
摘要： Generally speaking, pursuant to various embodiments, interconnect apparatuses are provided herein to couple flexible circuits to control circuits. In some embodiments, the apparatus can include a first portion housing one or more control circuits and a second portion conductively coupled to a flexible circuit. In some embodiments, the first portion may be configured to be coupled to the second portion such that the control circuit can be conductively coupled to the flexible circuit when the first portion is coupled to the second portion. In some embodiments, the control circuit can be configured to capture temperature readings. In some embodiments, the control circuit can be configured to capture proximity readings. In some embodiments, the control circuit can be configured to include one or more communications devices.
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公开(公告)号：US20190096225A1
公开(公告)日：2019-03-28
申请号：US16202029
申请日：2018-11-27
摘要： Embodiments of the present invention relate to wearable computing devices. In some embodiments, a wearable computing devices (“WCD”) for monitoring occupational hazards are disclosed. The WCD may include an apparel item having one or more control circuits affixed thereto. One or more sensors may be communicatively coupled to the computing device and configured to detect or monitor at least one of an aspect of a user of the WCD and an ambient environment of the user. The control circuits can be configured to generate one or more notifications when sensor data comprises a value above a threshold amount.
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