Patents by Inventor Yellapu V. Murty
Yellapu V. Murty 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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Publication number: 20220235516Abstract: A new technique for treating non-PAN-based pre-cursor polymeric fibers, tows, yarns, and films has been created for use in making stabilized pre-cursor polymers. By applying stepwise or non-stepwise microwave and/or ultraviolet radiation to the pre-cursor polymeric fibers, tows, yarn, or films prior to the stabilization thereof, a reduction in time for the costly stabilization process is achieved. Application of this technique extends to less-costly production of carbon fibers, for uses in industries such as automotive, aviation, trains, medical, military, sporting goods, orthopedics, and other industries. The pre-cursor polymeric fibers, tows, yarns, or films may be a multi-component polymer composite comprised of a non-PAN-based polymeric fiber, tow, yarn, or film and at least one or more constituent materials. Carbonization of such pre-cursor polymeric fibers, tows, yarns, or films results in less-costly carbon fibers that perform equally, if not better, than traditional costly PAN-based carbon fibers.Type: ApplicationFiled: June 10, 2020Publication date: July 28, 2022Applicant: University of Virginia Patent FoundationInventors: Xiaodong Li, Zan Gao, Jiadeng Zhu, Yellapu V. Murty, Kenneth Brown, Clifton Bumgardner
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Patent number: 9921037Abstract: Structures based upon periodic cellular materials that provide a potential for defeating combinations of both air blast loading and ballistic attack either sequentially or simultaneously, or combination of both. The cellular structures may also be configured to meet the stiffness and strength support requirements of particular vehicle or other applications, systems or structures. The armor is therefore potentially able to support normal service loads and defeat blast and ballistic threats when necessary. The structure provides for using efficient load support capabilities of the material (without a high armor protection level) in low threat conditions, as well as the ability to modify the system to increase its level protection to a desired or required level. This would reduce the weight of the protection system in normal (low threat) conditions which reduces vehicle wear and tear, as well as cost savings in fabrication of applicable structures or systems.Type: GrantFiled: July 31, 2008Date of Patent: March 20, 2018Assignee: University of Virginia Patent FoundationInventors: Haydn N. G. Wadley, Yellapu V. Murty, Tyrone Jones, Rahul Gupta, Matthew Burkins
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Patent number: 8650756Abstract: Methods and systems to manufacture bonded corrugation truss-based structures. This allows the ability to change the dimensions of the individual structural features of the corrugations, i.e. thickness of the core, face sheet thickness, relative density of the core, and the alloys. The nodal design which provides ideal stress/strain distribution for in-plane and out-off plane loading. The node has a curved/smooth triple point intersection which in turn can provide best load transfer interface with high integrity/toughness. The bonded corrugation truss based structure can be continuous to any length only limited by the volume of the extrusion billet and the press capacity. An aspect of the bonded corrugation structures may include friction stir welding of the face sheets or any fusion welding of panels with edge members for strengthening allows fabrication of panels of any width and length. Bonding panels enables the fabrication of structures of any width.Type: GrantFiled: June 5, 2009Date of Patent: February 18, 2014Assignee: University of Virginia Patent FoundationInventors: Haydn N. G. Wadley, John J. Wetzel, Yellapu V. Murty
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Patent number: 8360361Abstract: Methods and apparatuses for passive jet blast deflection or the like. Use of the passive jet blast deflector permits the efficient dispersal of a fast moving local heat source into the environment through passive means while providing a high strength structure. The jet blast deflector system may include a first plate, a second plate, and a cellular core disposed between them adapted to allow cooling ambient air to flow through the cellular core, wherein the first plate, second plate, and core are all seamlessly coupled heat pipes that form a single vapor core to facilitate the spreading and even storing of thermal energy. An ejector plate may be attached to the top of the second plate to create a low pressure zone as the heat source passes over it, thereby pulling the ambient air through the cellular core, facilitating the removal the thermal energy from the system.Type: GrantFiled: May 23, 2007Date of Patent: January 29, 2013Assignee: University of Virginia Patent FoundationInventors: Haydn N. G. Wadley, Douglas T. Queheillalt, Hossein Haj-Hariri, Anthony G. Evans, George P. Peterson, Robert Kurtz, G. Douglas Long, Yellapu V. Murty
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Publication number: 20110283873Abstract: Structures based upon periodic cellular materials that provide a potential for defeating combinations of both air blast loading and ballistic attack either sequentially or simultaneously, or combination of both. The cellular structures may also be configured to meet the stiffness and strength support requirements of particular vehicle or other applications, systems or structures. The armor is therefore potentially able to support normal service loads and defeat blast and ballistic threats when necessary. The structure provides for using efficient load support capabilities of the material (without a high armor protection level) in low threat conditions, as well as the ability to modify the system to increase its level protection to a desired or required level. This would reduce the weight of the protection system in normal (low threat) conditions which reduces vehicle wear and tear, as well as cost savings in fabrication of applicable structures or systems.Type: ApplicationFiled: July 31, 2008Publication date: November 24, 2011Applicants: UNIVERSITY OF VIRGINIA PATENT FOUNDATION, DEPARTMENT OF THE ARMY, CELLULAR MATERIALS INTERNATIONAL, INC.Inventors: Haydn N.G. Wadley, Yellapu V. Murty, Tyrone Jones, Rahul Gupta, Matthew Burkins
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Publication number: 20110042512Abstract: Methods and apparatuses for passive jet blast deflection or the like. Use of the passive jet blast deflector permits the efficient dispersal of a fast moving local heat source into the environment through passive means while providing a high strength structure. The jet blast deflector system may include a first plate, a second plate, and a cellular core disposed between them adapted to allow cooling ambient air to flow through the cellular core, wherein the first plate, second plate, and core are all seamlessly coupled heat pipes that form a single vapor core to facilitate the spreading and even storing of thermal energy. An ejector plate may be attached to the top of the second plate to create a low pressure zone as the heat source passes over it, thereby pulling the ambient air through the cellular core, facilitating the removal the thermal energy from the system.Type: ApplicationFiled: May 23, 2007Publication date: February 24, 2011Applicant: UNIVERSITY OF VIRGINIA PATENT FOUNDATIONInventors: Haydn N.G. Wadley, Douglas T. Queheillalt, Hossein Haj-Hariri, Anthony G. Evans, George P. Peterson, Robert Kurtz, G. Douglas Long, Yellapu V. Murty
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Publication number: 20090286100Abstract: Methods and systems to manufacture bonded corrugation truss-based structures. This allows the ability to change the dimensions of the individual structural features of the corrugations, i.e. thickness of the core, face sheet thickness, relative density of the core, and the alloys. The nodal design which provides ideal stress/strain distribution for in-plane and out-off plane loading. The node has a curved/smooth triple point intersection which in turn can provide best load transfer interface with high integrity/toughness. The bonded corrugation truss based structure can be continuous to any length only limited by the volume of the extrusion billet and the press capacity. An aspect of the bonded corrugation structures may include friction stir welding of the face sheets or any fusion welding of panels with edge members for strengthening allows fabrication of panels of any width and length. Bonding panels enables the fabrication of structures of any width.Type: ApplicationFiled: June 5, 2009Publication date: November 19, 2009Applicant: UNIVERSITY OF VIRGINIA PATENT FOUNDATIONInventors: Haydn N.G. Wadley, John J. Wetzel, Yellapu V. Murty
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Patent number: 4380262Abstract: An apparatus useful for the production of wide amorphous or polycrystalline metal foils of substantially uniform thickness by the double roller chill quenching method comprises a fixed roller member and a spring-loaded movable roller member mounted on a set of mounting rails. The movable roller member is maintained at a selectably adjustable minimum spacing from the fixed roller member and is free to move away from this position of minimum spacing to accommodate forces tending to displace the rollers from one another. A spring urges the movable roller toward the fixed roller and provides for selectable adjustment of the restoring force urging the rollers together.Type: GrantFiled: October 27, 1980Date of Patent: April 19, 1983Assignee: GTE Laboratories IncorporatedInventors: Ralph P. I. Adler, Thomas J. Gorsuch, Yellapu V. Murty, Alexander R. Woronicki