Patents by Inventor John W. Gillespie
John W. Gillespie 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: 11047078Abstract: A process for aligning discontinuous fibers, and composite products and mats comprised of highly aligned discontinuous fibers, including products of the process. Aligned discontinuous fiber composite products include a matrix of fibers, each fiber having a longitudinal fiber axis, the composite comprising a free, uncut edge extending along an edge axis. The longitudinal fiber axis of a majority of the fibers in the composite product are aligned within a predetermined alignment tolerance of an alignment axis non-parallel to the edge axis. Aligned discontinuous fiber mats may have a first areal density of fibers in a first region of the composite located inward relative to the free, uncut edge, and a second area density at or adjacent to the free, uncut edge.Type: GrantFiled: April 8, 2020Date of Patent: June 29, 2021Assignee: University of DelawareInventors: John Tierney, Alex Vanarelli, Dirk Heider, Shridhar Yarlagadda, John W. Gillespie, Jr.
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Publication number: 20200240060Abstract: A process for aligning discontinuous fibers, and composite products and mats comprised of highly aligned discontinuous fibers, including products of the process. Aligned discontinuous fiber composite products include a matrix of fibers, each fiber having a longitudinal fiber axis, the composite comprising a free, uncut edge extending along an edge axis. The longitudinal fiber axis of a majority of the fibers in the composite product are aligned within a predetermined alignment tolerance of an alignment axis non-parallel to the edge axis. Aligned discontinuous fiber mats may have a first areal density of fibers in a first region of the composite located inward relative to the free, uncut edge, and a second area density at or adjacent to the free, uncut edge.Type: ApplicationFiled: April 8, 2020Publication date: July 30, 2020Applicant: University of DelawareInventors: John Tierney, Alex Vanarelli, Dirk Heider, Shridhar Yarlagadda, John W. Gillespie, JR.
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Patent number: 10669659Abstract: A system and method for aligning discontinuous fibers, manufacturing tailored preforms, and composite materials comprised of highly aligned discontinuous fibers.Type: GrantFiled: August 3, 2018Date of Patent: June 2, 2020Assignee: University of DelawareInventors: John Tierney, Alex Vanarelli, Dirk Heider, Shridhar Yarlagadda, John W. Gillespie, Jr.
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Publication number: 20190048500Abstract: A system and method for aligning discontinuous fibers, manufacturing tailored preforms, and composite materials comprised of highly aligned discontinuous fibers.Type: ApplicationFiled: August 3, 2018Publication date: February 14, 2019Applicant: University of DelawareInventors: John Tierney, Alex Vanarelli, Dirk Heider, Shridhar Yarlagadda, John W. Gillespie, JR.
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Patent number: 10098414Abstract: The improved footwear system of the present application uses composite materials in the design of an advanced modular in-shoe foot orthosis and a new container assembly which includes a high performance energy storage and return element orthosis. The footwear system uses a method of manufacture incorporating a new last model. The advantages of the footwear system over standard issue combat boots include lower weight, improved treatment of lower extremity overuse injuries and reduction of the occurrence of such overuse injuries by protecting at-risk feet with advanced footwear which can be customized to meet the biomechanical needs as well as the specific activities of the wearer.Type: GrantFiled: March 6, 2014Date of Patent: October 16, 2018Assignees: DIAPEDIA, LLC, UNIVERSITY OF DELAWAREInventors: Peter R. Cavanagh, Timothy B. Hurley, John J. Tierney, John W. Gillespie, Jr.
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Patent number: 9329021Abstract: A system for use in monitoring a structure is provided. The system includes a strip of piezoresistive material including nano-elements, electrodes coupled to the strip, and a resistance detector configured to measure a resistance of the strip.Type: GrantFiled: May 6, 2013Date of Patent: May 3, 2016Assignees: The Boeing Company, University of DelawareInventors: Michael J. DeLuca, Christopher J. Felker, Dirk Heider, Gaurav Pandey, Ahmad Abu-Obaid, Erik T. Thostenson, John W. Gillespie, Jr.
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Publication number: 20140298682Abstract: The improved footwear system of the present application uses composite materials in the design of an advanced modular in-shoe foot orthosis and a new container assembly which includes a high performance energy storage and return element orthosis. The footwear system uses a method of manufacture incorporating a new last model. The advantages of the footwear system over standard issue combat boots include lower weight, improved treatment of lower extremity overuse injuries and reduction of the occurrence of such overuse injuries by protecting at-risk feet with advanced footwear which can be customized to meet the biomechanical needs as well as the specific activities of the wearer.Type: ApplicationFiled: March 6, 2014Publication date: October 9, 2014Applicants: UNIVERSITY OF DELAWARE, DIAPEDIA, LLCInventors: Peter R. Cavanagh, Timothy B. Hurley, John J. Tierney, John W. Gillespie, JR.
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Publication number: 20100154621Abstract: A woven ballistic resistant fabric armor system comprising at least one ply having a yarn-yarn angle between the warp and fill yarns of less than 90°, with each ply oriented relative to an axis along the thickness of the plies such that adjacent plies have a different yarn-yarn angle, a different orientation, or both. The armor system may feature materials of different stiffness, strength, and strain-to-failure in each ply or a filler between selected plies, including a filler comprising discrete pieces of fabric ply that fit within the cell periphery of a stitching pattern.Type: ApplicationFiled: October 15, 2009Publication date: June 24, 2010Applicant: University of DelawareInventors: Gaurav Nilakantan, John W. Gillespie, JR., Michael Keefe
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Publication number: 20080237922Abstract: Methods and compositions for fabricating composite parts including at least one structural material and at least one protective material that are integrally bonded without the use of secondary bonding operations. One or more of the materials forming the layers of the composite parts may be a ceramic composition with or without porosity and one or more of the materials may be a polymer composition. Methods including co-injection processes also are provided for fabricating multi-layered structures in which each layer serves a desired function while still being integrated into the overall structure.Type: ApplicationFiled: July 15, 2005Publication date: October 2, 2008Applicant: Advanced Ceramics Research, Inc.Inventors: K. Ranji Vaidyanathan, Catherine Green, John W. Gillespie, Shridhar Yarlagadda, Gregory J. Artz
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Patent number: 7419373Abstract: A method and apparatus for forming laminate composite structures. At least two laminae, each containing electrically conductive reinforcing fibers, are placed upon each other in contacting relationship to form a generally layered structure. The layered structure may be subjected to heat to conductively transfer heat through the layered structure and thereby improve the surface contact between the two laminae. The layered structure is volumetrically heated by inductively transferring energy to the electrically conductive reinforcing fibers. The heated, layered structure is consolidated, such as by applying pressure and reducing the temperature of the layered structure. The consolidated structure is then quenched by rapidly cooling the consolidated structure in a directionally controlled manner about a midplane thereof.Type: GrantFiled: April 19, 2005Date of Patent: September 2, 2008Assignee: Alliant Techsystems Inc.Inventors: Jack K. Gerhard, Eric J. Lynam, Mark R. Shaffer, Shridhar Yariagadda, Nicholas B. Shevchenko, Bruce K. Fink, Dirk Heider, John J. Tierney, John W. Gillespie, Jr.
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Patent number: 7016261Abstract: Disclosed herein is a single point seismic system comprising an array of air guns disposed within a frame. The array includes a cluster of air guns on one of its ends and a reduction in chamber size of the air guns along the length of the array. On the end of the array opposite the cluster the array can comprise a series of air guns whose chamber size is an order of magnitude less than the chamber size of the guns comprising the cluster. The middle of the array can comprise a series of air guns whose respective chamber volumes differ by an order of magnitude. The frame of the present invention is generally wholly submerged during operation and does not interfere with the seismic signal produced by the firing of the air guns.Type: GrantFiled: December 9, 2002Date of Patent: March 21, 2006Assignee: Baker Hughes, IncorporatedInventors: Daniel J. Quinn, John W. Gillespie
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Patent number: 6935594Abstract: Methods and compositions for fabricating composite parts including at least one structural material and at least one protective material that are integrally bonded without the use of secondary bonding operations. One or more of the materials forming the layers of the composite parts may be a ceramic composition with or without porosity and one or more of the materials may be a polymer composition. Methods including co-injection processes also are provided for fabricating multi-layered structures in which each layer serves a desired function while still being integrated into the overall structure.Type: GrantFiled: November 12, 2002Date of Patent: August 30, 2005Assignee: Advanced Ceramics Research, Inc.Inventors: K. Ranji Vaidyanathan, Catherine Green, John W. Gillespie, Shridhar Yarlagadda, Gregory J. Artz
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Patent number: 6899777Abstract: A process for continuous composite coextrusion comprising: (a) forming first a material-laden composition comprising a thermoplastic polymer and at least about 40 volume % of a ceramic or metallic particulate in a manner such that the composition has a substantially cylindrical geometry and thus can be used as a substantially cylindrical feed rod; (b) forming a hole down the symmetrical axis of the feed rod; (c) inserting the start of a continuous spool of ceramic fiber, metal fiber or carbon fiber through the hole in the feed rod; (d) extruding the feed rod and spool simultaneously to form a continuous filament consisting of a green matrix material completely surrounding a dense fiber reinforcement and said filament having an average diameter that is less than the average diameter of the feed rod; and (e) depositing the continuous filament into a desired architecture which preferably is determined from specific loading conditions of the desired object and CAD design of the object to provide a green fiber reiType: GrantFiled: January 2, 2002Date of Patent: May 31, 2005Assignee: Advanced Ceramics Research, Inc.Inventors: K. Ranji Vaidyanathan, Joseph Walish, Mark Fox, John W. Gillespie, Jr., Shridhar Yarlagadda, Michael R. Effinger, Anthony C. Mulligan, Mark J. Rigali
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Patent number: 6881374Abstract: A method and apparatus for forming laminate composite structures. At least two laminae, each containing electrically conductive reinforcing fibers, are placed upon each other in contacting relationship to form a generally layered structure. The layered structure may be subjected to heat to conductively transfer heat through the layered structure and thereby improve the surface contact between two laminae. The layered structure is volumetrically heated by inductively transferring energy to the electrically conductive reinforcing fibers. The heated, layered structure is consolidated, such as by applying pressure and reducing the temperature of the layered structure. The consolidated structure is then quenched by rapidly cooling the consolidated structure in a directionally controlled manner about a midplane thereof.Type: GrantFiled: September 24, 2002Date of Patent: April 19, 2005Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Jack K. Gerhard, Eric J. Lynam, Mark R. Shaffer, Shridhar Yariagadda, Nicholas B. Shevchenko, Bruce K. Fink, Dirk Heider, John J. Tierney, John W. Gillespie, Jr.
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Patent number: 6778914Abstract: The present invention comprises a dynamic interphase-loading apparatus and method for testing the interfacial shear strength, stress-strain response, energy absorbing capability and durability of an interphase region of a fiber/matrix composite under quasi-static to high strain rates. The apparatus provides a load to the fiber/matrix interphase under high loading rates. The apparatus includes means for continuously monitoring the load applied to the fiber/matrix composite and providing a signal representative thereof, and means for monitoring the displacement of the interphase and providing a signal representative thereof. The apparatus further includes a computer that receives the load signal and the displacement signal, and generates chemical properties of the interphase of the fiber/matrix composite.Type: GrantFiled: March 17, 2000Date of Patent: August 17, 2004Assignee: University of DelawareInventors: John W. Gillespie, Jr., Metin Tanoglu
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Publication number: 20040109389Abstract: Disclosed herein is a single point seismic system comprising an array of air guns disposed within a frame. The array includes a cluster of air guns on one of its ends and a reduction in chamber size of the air guns along the length of the array. On the end of the array opposite the cluster the array can comprise a series of air guns whose chamber size is an order of magnitude less than the chamber size of the guns comprising the cluster. The middle of the array can comprise a series of air guns whose respective chamber volumes differ by an order of magnitude. The frame of the present invention is generally wholly submerged during operation and does not interfere with the seismic signal produced by the firing of the air guns.Type: ApplicationFiled: December 9, 2002Publication date: June 10, 2004Applicant: BAKER HUGHES, INCORPORATEDInventors: Daniel J. Quinn, John W. Gillespie
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Publication number: 20030062118Abstract: A method and apparatus for forming laminate composite structures. At least two laminae, each containing electrically conductive reinforcing fibers, are placed upon each other in contacting relationship to form a generally layered structure. The layered structure may be subjected to heat to conductively transfer heat through the layered structure and thereby improve the surface contact between the two laminae. The layered structure is volumetrically heated by inductively transferring energy to the electrically conductive reinforcing fibers. The heated, layered structure is consolidated, such as by applying pressure and reducing the temperature of the layered structure. The consolidated structure is then quenched by rapidly cooling the consolidated structure in a directionally controlled manner about a midplane thereof.Type: ApplicationFiled: September 24, 2002Publication date: April 3, 2003Inventors: Jack K. Gerhard, Eric J. Lynam, Mark R. Shaffer, Shridhar Yariagadda, Nicholas B. Shevchenko, Bruce K. Fink, Dirk Heider, John J. Tierney, John W. Gillespie
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Publication number: 20030044593Abstract: A process for continuous composite coextrusion comprising: (a) forming first a material-laden composition comprising a thermoplastic polymer and at least about 40 volume % of a ceramic or metallic particulate in a manner such that the composition has a substantially cylindrical geometry and thus can be used as a substantially cylindrical feed rod; (b) forming a hole down the symmetrical axis of the feed rod; (c) inserting the start of a continuous spool of ceramic fiber, metal fiber or carbon fiber through the hole in the feed rod; (d) extruding the feed rod and spool simultaneously to form a continuous filament consisting of a green matrix material completely surrounding a dense fiber reinforcement and said filament having an average diameter that is less than the average diameter of the feed rod; and (e) depositing the continuous filament into a desired architecture which preferably is determined from specific loading conditions of the desired object and CAD design of the object to provide a green fiber reiType: ApplicationFiled: January 2, 2002Publication date: March 6, 2003Inventors: K. Ranji Vaidyanathan, Joseph Walish, Mark Fox, John W. Gillespie, Shridhar Yarlagadda, Michael R. Effinger, Anthony C. Mulligan, Mark J. Rigali
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Patent number: 6043469Abstract: Mesh susceptors for use in induction heating and bonding processes are tailored to obtain more uniform heating across the susceptor and hence, the bondline, when bonding composite parts. The susceptors are tailored by cutting and removing segments from the mesh areas where the induced current and hence, heat generation, is highest. An algorithm is employed to predict the induced current patterns throughout the mesh so that areas of high heat generation can be identified and then cut and removed. In this way, essentially uniform temperatures in metal mesh susceptors may be achieved by specifically designed cut patterns within the mesh even though the mesh susceptor is subject to non-uniform magnetic fields.Type: GrantFiled: January 25, 1999Date of Patent: March 28, 2000Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Bruce K. Fink, John W. Gillespie, Jr., Shridhar Yarlagadda
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Patent number: D814161Type: GrantFiled: March 6, 2014Date of Patent: April 3, 2018Assignees: DIAPEDIA, LLC, UNIVERSITY OF DELAWAREInventors: Peter R. Cavanagh, Timothy B. Hurley, John J. Tierney, John W. Gillespie, Jr.