Patents by Inventor Robert Alan Lewis
Robert Alan Lewis has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12116210Abstract: Carriers are disclosed for supporting a plurality of agricultural cores on a plurality of core supports for coating by a flexible film. The plurality of core supports may include a pedestal for supporting a respective agricultural core and a core periphery region having a plurality of bridge elements which couple the pedestal to the connecting structure between the plurality of core supports. The carriers may include a vacuum system that independently communicates a partial vacuum to an aperture in each respective pedestal and a plurality of apertures in the core periphery region of a respective core support between the bridge elements.Type: GrantFiled: October 25, 2019Date of Patent: October 15, 2024Assignee: Corteva Agriscience LLCInventors: Scott A Adler, Marios Avgousti, Robert Ray Burch, Rajeev L Gorowara, Robert Alan Lewis, Charles A Sample, Larry D Wierschke, Jihua Zhang
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Publication number: 20210354929Abstract: Carriers are disclosed for supporting a plurality of agricultural cores on a plurality of core supports for coating by a flexible film. The plurality of core supports may include a pedestal for supporting a respective agricultural core and a core periphery region having a plurality of bridge elements which couple the pedestal to the connecting structure between the plurality of core supports. The carriers may include a vacuum system that independently communicates a partial vacuum to an aperture in each respective pedestal and a plurality of apertures in the core periphery region of a respective core support between the bridge elements.Type: ApplicationFiled: October 25, 2019Publication date: November 18, 2021Applicant: E. I. DUPONT DE NEMOURS AND COMPANYInventors: SCOTT A ADLER, MARIOS AVGOUSTI, ROBERT RAY BURCH, RAJEEV L GOROWARA, ROBERT ALAN LEWIS, CHARLES A SAMPLE, LARRY D WIERSCHKE, JIHUA ZHANG
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Patent number: 10431879Abstract: A fabric antenna for telecommunications is disclosed. The fabric antenna comprises a host yarn, which is substantially electrically non-conducting, and an antenna yarn, which is substantially electrically conducting. The host yarn and antenna yarn are knitted together to form a host fabric comprising an antenna grid. The antenna grid comprises a plurality of intersecting antenna tracks formed of antenna yarn. The tracks are separated by regions of the host fabric and are electrically coupled together at the regions where the tracks intersect.Type: GrantFiled: March 11, 2016Date of Patent: October 1, 2019Assignee: BAE SYSTEMS plcInventors: Dean Kitchener, Christopher Bryce Wyllie, Robert Alan Lewis, Ingrida Juraite, Tilak Dias, William Hurley
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Patent number: 10103443Abstract: A method of manufacturing and an antenna having an upper and lower loop. Upper loop comprising a first conductive loop defined by an upper conductor and a first conductive blade tapering outwardly to form a flare portion adjacent a distal end of the upper conductor. Lower loop comprising a second conductive loop defined by a base conductor and a second conductive blade tapering outwardly forming a flare portion adjacent a distal end of the base conductor. First and second conductive blades defining, between their facing edges, a notch opening outwardly from a feed region. Upper loop further comprising an elongate conductive vane extending at an angle from a first location on the upper conductor to a second location on the first conductive blade defining a pair of loops within the upper loop.Type: GrantFiled: December 15, 2016Date of Patent: October 16, 2018Assignee: BAE Systems plcInventors: Robert Alan Lewis, Murray Jerel Niman, Dean Kitchener, Christopher Bryce Wyllie
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Patent number: 10044106Abstract: A wide band antenna comprising a signal generator coupled to a feed region of at least one antenna element comprising upper and lower loops. Upper loop comprising a first conductive loop element defined by an upper conductor and a first conductive blade tapering outwardly forming a flare portion adjacent a distal end of the upper conductor. Lower loop comprising a second loop defined by a base conductor and a second conductive blade tapering outwardly forming a flare portion adjacent a distal end of the base conductor, first and second conductive blades defining, between their facing edges, a notch opening outwardly from feed region. The method comprising matching an antenna element impedance to the transmission line; selecting an antenna element cut-off frequency; selecting an upper conductor length, and subsequently selecting dimensions of the upper loop such that they are substantially equal to a wavelength corresponding to the selected cut-off frequency.Type: GrantFiled: December 15, 2016Date of Patent: August 7, 2018Assignee: BAE Systems plcInventors: Robert Alan Lewis, Murray Jerel Niman, Dean Kitchener, Christopher Bryce Wyllie
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Publication number: 20180076510Abstract: A fabric antenna for telecommunications is disclosed. The fabric antenna comprises a host yarn, which is substantially electrically non-conducting, and an antenna yarn, which is substantially electrically conducting. The host yarn and antenna yarn are knitted together to form a host fabric comprising an antenna grid. The antenna grid comprises a plurality of intersecting antenna tracks formed of antenna yarn. The tracks are separated by regions of the host fabric and are electrically coupled together at the regions where the tracks intersect.Type: ApplicationFiled: March 11, 2016Publication date: March 15, 2018Applicant: BAE SYSTEMS plcInventors: DEAN KITCHENER, CHRISTOPHER BRYCE WYLLIE, ROBERT ALAN LEWIS, INGRIDA JURAITE, TILAK DIAS, WILLIAM HURLEY
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Publication number: 20170179604Abstract: A method of manufacturing and an antenna having an upper and lower loop. Upper loop comprising a first conductive loop defined by an upper conductor and a first conductive blade tapering outwardly to form a flare portion adjacent a distal end of the upper conductor. Lower loop comprising a second conductive loop defined by a base conductor and a second conductive blade tapering outwardly forming a flare portion adjacent a distal end of the base conductor. First and second conductive blades defining, between their facing edges, a notch opening outwardly from a feed region. Upper loop further comprising an elongate conductive vane extending at an angle from a first location on the upper conductor to a second location on the first conductive blade defining a pair of loops within the upper loop.Type: ApplicationFiled: December 15, 2016Publication date: June 22, 2017Inventors: Robert Alan Lewis, Murray Jerel NIMAN, Dean Kitchener, Christopher Bryce Wyllie
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Publication number: 20170179605Abstract: A wide band antenna comprising a signal generator coupled to a feed region of at least one antenna element comprising upper and lower loops. Upper loop comprising a first conductive loop element defined by an upper conductor and a first conductive blade tapering outwardly forming a flare portion adjacent a distal end of the upper conductor. Lower loop comprising a second loop defined by a base conductor and a second conductive blade tapering outwardly forming a flare portion adjacent a distal end of the base conductor, first and second conductive blades defining, between their facing edges, a notch opening outwardly from feed region. The method comprising matching an antenna element impedance to the transmission line; selecting an antenna element cut-off frequency; selecting an upper conductor length, and subsequently selecting dimensions of the upper loop such that they are substantially equal to a wavelength corresponding to the selected cut-off frequency.Type: ApplicationFiled: December 15, 2016Publication date: June 22, 2017Inventors: Robert Alan Lewis, Murray Jerel NIMAN, Dean Kitchener, Christopher Bryce Wyllie
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Patent number: 9190731Abstract: A radar or other microwave antenna comprises at least one antenna element, a feed structure for the element extending to the antenna element substantially normally thereto through a dielectric substrate, and characterized in that the dielectric substrate is anisotropic whereby to reduce unwanted common-mode currents in the feed structure. The anisotropy may be provided by elongate conductive elements distributed through the dielectric substrate and aligned with their longitudinal axes parallel to the feed structure.Type: GrantFiled: November 25, 2010Date of Patent: November 17, 2015Assignee: BAE SYSTEMS plcInventors: Gareth Michael Lewis, Robert Alan Lewis, Larry Brian Tween, Gary David Panaghiston, Ronald Frank Edward Guy
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Patent number: 8941540Abstract: An antenna assembly is disclosed which includes a layered structure having a planar array of antenna elements; and a feed arrangement perpendicular to the antenna elements; the layered structure further having layers over the planar array of antenna elements with holes provided therethrough to allow the feed arrangement to be connected to contacts for the antenna elements. The layered structure may include vias provided such that heat may be applied remotely to the contacts.Type: GrantFiled: November 25, 2010Date of Patent: January 27, 2015Assignee: BAE Systems PLCInventors: Richard John Harper, Gareth Michael Lewis, Robert Alan Lewis, Gary David Panaghiston, Larry Brian Tween, Waseem Mohammed Anees Qureshi, Jonathan Pinto
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Publication number: 20130069840Abstract: A radar or other microwave antenna comprises at least one antenna element, a feed structure for the element extending to the antenna element substantially normally thereto through a dielectric substrate, and characterised in that the dielectric substrate is anisotropic whereby to reduce unwanted common-mode currents in the feed structure. The anisotropy may be provided by elongate conductive elements distributed through the dielectric substrate and aligned with their longitudinal axes parallel to the feed structure.Type: ApplicationFiled: November 25, 2010Publication date: March 21, 2013Applicant: BAE SYSTEMS PLCInventors: Gareth Michael Lewis, Robert Alan Lewis, Larry Brian Tween, Gary David Panaghiston, Ronald Frank Edward Guy
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Publication number: 20120274531Abstract: A dipole array assembly, is disclosed which includes a plurality of poles arranged in a two-dimensional array to provide a plurality of dipoles, each pole being shaped such that adjacent edges of neighbouring poles that are from respective neighbouring dipoles are relatively long and relatively close to each other compared to the dimensions of the poles, thereby increasing coupling between different dipoles. A feed arrangement is provided in a plane that is at an angle to the plane of the dipoles wherein one or more baluns are integrated in the feed arrangement. Dual polarised operation can be performed independently between the two polarisations.Type: ApplicationFiled: November 25, 2010Publication date: November 1, 2012Applicant: BAE SYSTEMS plcInventors: Richard John Harper, Gareth Michael Lewis, Robert Alan Lewis, Gary David Panaghiston, Larry Brian Tween, Waseem Mohammed Anees Qureshi, Jonathan Pinto
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Publication number: 20120235876Abstract: An antenna assembly is disclosed which includes a layered structure having a planar array of antenna elements; and a feed arrangement perpendicular to the antenna elements; the layered structure further having layers over the planar array of antenna elements with holes provided therethrough to allow the feed arrangement to be connected to contacts for the antenna elements. The layered structure may include vias provided such that heat may be applied remotely to the contacts.Type: ApplicationFiled: November 25, 2010Publication date: September 20, 2012Inventors: Richard John Harper, Gareth Michael Lewis, Robert Alan Lewis, Gary David Panaghiston, Larry Brian Tween, Waseem Mohammed Anees Qureshi, Jonathan Pinto
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Patent number: 8063840Abstract: An antenna including a number of antenna units, each having a lens and an array of beam ports. The antenna units are arranged in a stack, and are configured to transmit or receive signals from the same field-of-view. Each unit is configured to operate in a different frequency band, with the lenses being configured such that an approximately constant beam shape is maintained across the entire operating bandwidth of the antenna.Type: GrantFiled: May 8, 2007Date of Patent: November 22, 2011Assignee: BAE Systems plcInventors: James Christopher Gordon Matthews, Robert Alan Lewis, Christian Rieckmann
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Patent number: 7400304Abstract: An antenna is provided comprising a first group of part-spherical dielectric lenses supported on a first portion of a conducting ground place arranged to reflect signals emerging from the lens, each of the lenses having a number of associated switchably selectable antenna feed elements arranged around the periphery of at least one sector of the lens for injecting signals into and/or receiving signals propagated by the lens, wherein each lens and the associated feed elements of the first group has a different orientation and may be operated to provide coverage in respect of a different region. The antenna also comprises a second group of one or more spherical or part-spherical dielectric lenses and associated switchably selectable antenna feed elements, oriented and operable to provide coverage to a region other than that covered by lenses of the first group.Type: GrantFiled: March 29, 2005Date of Patent: July 15, 2008Assignee: BAE Systems plcInventors: Robert Alan Lewis, Christian Rieckmann, James Christopher Gordon Matthews, Peter Edge