Patents by Inventor William W. Clark
William W. Clark 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: 20160157868Abstract: The present disclosure concerns embodiments of an implantable perfusion device that can be implanted in an injured blood vessel to control bleeding without occluding the vessel. In one specific implementation, the perfusion device can be implanted percutaneously into a patient's descending aorta to control bleeding at the site of a ruptured portion of the aorta (known as torso hemorrhage) while still allowing for the antegrade flow of blood from a location upstream of the ruptured portion of the aorta to a location downstream of the ruptured portion of the aorta. The perfusion device can be left inside the patient as the patient is transported to a medical facility where the injury can be repaired. Following repair of the vessel, the perfusion device can be withdrawn from the patient.Type: ApplicationFiled: July 10, 2014Publication date: June 9, 2016Applicant: University of Pittsburgh - Of the Commonwealth System of Higher EducationInventors: Bryan W. Tillman, William W. Clark, Sung Kwon Cho, Youngjae Chun
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Publication number: 20160076827Abstract: A device for selectively controlling the passage of thermal energy through the device from a first space to a second space by selectively varying an overall thermal conductivity of the device comprises a structure having at least one component movable from a first position to a second position and an actuator mechanically coupled to the component for moving the component from the first position to the second position. When the at least one component is positioned in the first position the device exhibits a first thermal conductivity and when the at least one component is positioned in the second position the device exhibits a second thermal conductivity different from the first thermal conductivity.Type: ApplicationFiled: November 20, 2015Publication date: March 17, 2016Applicant: University of Pittsburgh-Of the Commonwealth System of Higher EducationInventors: WILLIAM W. CLARK, LAURA ATKINSON SCHAEFER, WESLEY A. KNOTTS, CHANGKI MO, MARK KIMBER
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Publication number: 20150105882Abstract: Systems and methods of motion tracking are disclosed that can be used in connection with sports motion. Such a method can include placing one or more inertial measurement units (IMUs) on at least one of a person or one or more pieces of equipment, recording motion data associated with the at least one of the person or the one or more pieces of equipment, and synchronizing the recorded motion data. The method can also include analyzing the synchronized motion data in connection with a motion standard, and generating feedback based at least in part on the analyzed motion data.Type: ApplicationFiled: December 17, 2014Publication date: April 16, 2015Applicant: University of Pittsburgh - Of the Commonwealth System of Higher EducationInventors: William W. Clark, Jeremy R. Romeiko
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Patent number: 8944939Abstract: Systems and methods of motion tracking are disclosed that can be used in connection with sports motion. Such a method can include placing one or more inertial measurement units (IMUs) on at least one of a person or one or more pieces of equipment, recording motion data associated with the at least one of the person or the one or more pieces of equipment, and synchronizing the recorded motion data. The method can also include analyzing the synchronized motion data in connection with a motion standard, and generating feedback based at least in part on the analyzed motion data.Type: GrantFiled: February 6, 2013Date of Patent: February 3, 2015Assignee: University of Pittsburgh—Of the Commonwealth System of Higher EducationInventors: William W. Clark, Jeremy R. Romeiko
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Publication number: 20140001761Abstract: An energy harvester for producing useable energy from fluid motion of a fluid medium, the energy harvester comprising a support structure affixed directly or indirectly to a foundation or mounting; wherein the support structure comprises one or more legs; a morphable moving element movably supported by the support structure for oscillating movement along an axis of the support structure, wherein the axis is substantially perpendicular to a direction of the fluid motion; a biasing element or spring for biasing the morphable moving element in a first direction along the axis; and a converter for converting mechanical energy of the morphable moving element to useable energy.Type: ApplicationFiled: September 19, 2012Publication date: January 2, 2014Inventors: Lisa Mauck Weiland, William W. Clark, Daniel G. Cole
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Patent number: 8540209Abstract: A flow modulation valve has a slidably translating hollow armature with at least one energizable coil wound around and fixably attached to the hollow armature. The energizable coil or coils are influenced by at least one permanent magnet surrounding the hollow armature and supported by an outer casing. Lorentz forces on the energizable coils which are translated to the hollow armature, increase or decrease the flow area to provide flow throttling action. The extent of hollow armature translation depends on the value of current supplied and the direction of translation depends on the direction of current flow. The compact nature of the flow modulation valve combined with the high forces afforded by the actuator design provide a flow modulation valve which is highly responsive to high-rate input control signals.Type: GrantFiled: September 15, 2011Date of Patent: September 24, 2013Assignee: University of Pittsburgh—Of the Commonwealth System of Higher EducationInventors: John Peter Hensel, Nathaniel Black, Jimmy Dean Thorton, Jeffrey Stuart Vipperman, David N. Lambeth, William W. Clark
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Publication number: 20130204411Abstract: Systems and methods of motion tracking are disclosed that can be used in connection with sports motion. Such a method can include placing one or more inertial measurement units (IMUs) on at least one of a person or one or more pieces of equipment, recording motion data associated with the at least one of the person or the one or more pieces of equipment, and synchronizing the recorded motion data. The method can also include analyzing the synchronized motion data in connection with a motion standard, and generating feedback based at least in part on the analyzed motion data.Type: ApplicationFiled: February 6, 2013Publication date: August 8, 2013Applicant: University of Pittsburgh Of the Commonwealth System of Higher EducationInventors: William W. Clark, Jeremy R. Romeiko
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Publication number: 20130146821Abstract: A material having a first non-zero elastic modulus capable of reversibly changing the first non-zero elastic modulus to a second non-zero elastic modulus in response to a redox reaction occurring in the material. A method of producing a material that is reversibly cyclable between a first non-zero elastic modulus and a second non-zero elastic modulus, comprising: preparing a polymer comprising both crosslinks that do not depend on metal binding and functional groups capable of having oxidation-state specific binding constants to a metal ion; and doping the polymer with a solution containing the metal ion.Type: ApplicationFiled: December 10, 2012Publication date: June 13, 2013Inventors: Tara Yvonne Meyer, William W. Clark, David Waldeck, Lisa Mauck Weiland, Percy Calvo-Marzal, Tianqi Pan, Rachel D. Harris, Haitao Liu
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Publication number: 20130081786Abstract: A device for selectively controlling the passage of thermal energy therethrough by selectively varying the overall thermal conductivity of the device comprises a structure having at least one component movable from a first position to a second position. When the at least one component is positioned in the first position the device exhibits a first thermal conductivity and when the at least one component is positioned in the second position the device exhibits a second thermal conductivity different than the first thermal conductivity.Type: ApplicationFiled: June 18, 2012Publication date: April 4, 2013Inventors: WILLIAM W. CLARK, LAURA ATKINSON SCHAEFER, WESLEY A. KNOTTS, CHANGKI MO, MARK KIMBER
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Publication number: 20120061596Abstract: A flow modulation valve has a slidably translating hollow armature with at least one energizable coil wound around and fixably attached to the hollow armature. The energizable coil or coils are influenced by at least one permanent magnet surrounding the hollow armature and supported by an outer casing. Lorentz forces on the energizable coils which are translated to the hollow armature, increase or decrease the flow area to provide flow throttling action. The extent of hollow armature translation depends on the value of current supplied and the direction of translation depends on the direction of current flow. The compact nature of the flow modulation valve combined with the high forces afforded by the actuator design provide a flow modulation valve which is highly responsive to high-rate input control signals.Type: ApplicationFiled: September 15, 2011Publication date: March 15, 2012Inventors: John Peter Hensel, Nathaniel Black, Jimmy Dean Thorton, Jeffrey Stuart Vipperman, David N. Lambeth, William W. Clark
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Publication number: 20090171413Abstract: An implantable device. The implantable device includes a computing device, a microelectromechanical system (MEMS) pH sensor connected to the computing device, and a communication system connected to the computing device.Type: ApplicationFiled: September 2, 2008Publication date: July 2, 2009Inventors: Marco Zenati, William W. Clark, Robert J. Sclabassi, Mingui Sun, Sung Kwon Cho, Hsin-Hua Hu
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Patent number: 7159841Abstract: This invention is directed to a fuel cell operable with a quantity of fuel and a quantity of an oxidizer to produce electrical power, the fuel cell including a fuel cell body including a labyrinth system structured to permit the fuel and the oxidizer to flow therethrough; at least a first catalyst in fluid communication with the labyrinth; and at least a first microvalve operably disposed within at least a portion of the labyrinth. The microvalve utilizes a deflectable member operable upon the application of a voltage from a voltage source.Type: GrantFiled: November 7, 2003Date of Patent: January 9, 2007Assignee: The United States of America as represented by the United States Department of EnergyInventors: Randall Gemmen, Jimmy Thornton, Jeffrey S. Vipperman, William W. Clark
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Patent number: 6943484Abstract: One aspect of the invention relates to a composite member for a resonator having an active piezoelectric element and a passive piezoelectric element. The active piezoelectric element causes the resonator to vibrate and detects the frequency of the vibration. The passive piezoelectric element changes the frequency of the vibration. Another aspect of the invention relates to a method for controlling a resonator with composite member having a substrate carrying a composite piezoelectric element. The composite piezoelectric element includes an actuator element, a sensor element and a passive element. The method comprises inducing a resonance within the composite member with the actuator element, detecting the resonance with the sensor element, and altering the resonance by altering the electromechanical coupling of the passive element. Additional aspects and benefits of the invention are also given.Type: GrantFiled: December 6, 2002Date of Patent: September 13, 2005Assignee: University of PittsburghInventors: William W. Clark, Qing-Ming Wang
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Publication number: 20040137300Abstract: This paper presents the fabrication and preliminary testing of a novel piezoelectric microvalve. Fabrication has three steps, which are the actuator fabrication, valve body fabrication and assembly of the microvalve. Fabricating an actuator involves cutting piezoelectric and brass beams, gluing the brass and piezoceramic beams into a trimorph sandwich structure, and curing them under pressure at elevated temperatures. Actuators are then wired either by using conductive epoxy or soldering. Valve body parts are constructed from single crystal silicon substrates using deep reactive ion etching (DRIE). DRIE is a subtractive process, whereby a mask is created on the surface of the stock, which will shield the parts that are not to be machined. Refinements in the actuator manufacturing process are made to increase the quality and decrease the fabrication time. Using a photonic probe, tip deflections of the actuators have been tested at various temperature and voltage levels.Type: ApplicationFiled: November 7, 2003Publication date: July 15, 2004Inventors: Randall Gemmen, Jimmy Thornton, Jeffrey S. Vipperman, William W. Clark
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Publication number: 20030127944Abstract: One aspect of the invention relates to a composite member for a resonator having an active piezoelectric element and a passive piezoelectric element. The active piezoelectric element causes the resonator to vibrate and detects the frequency of the vibration. The passive piezoelectric element changes the frequency of the vibration. Another aspect of the invention relates to a method for controlling a resonator with composite member having a substrate carrying a composite piezoelectric element. The composite piezoelectric element includes an actuator element, a sensor element and a passive element. The method comprises inducing a resonance within the composite member with the actuator element, detecting the resonance with the sensor element, and altering the resonance by altering the electromechanical coupling of the passive element. Additional aspects and benefits of the invention are also given.Type: ApplicationFiled: December 6, 2002Publication date: July 10, 2003Inventors: William W. Clark, Qing-Ming Wang
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Patent number: 5739950Abstract: A trilaminar semiconductor device is placed at an intermediate focus is an optical instrument having a sensitive photodetector. The layers of the device are successively in the form of a two-photon absorber, a sacrificial layer, and a multiple quantum well. The composition of the semiconductor is varied in the layers to achieve the desired bandgap and function.Type: GrantFiled: September 1, 1989Date of Patent: April 14, 1998Inventors: Gary L. Wood, William W. Clark, III, Byong H. Ahn, Edward J. Sharp
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Patent number: 5449904Abstract: A passive broadband sensor protection and enhancement system and technique. ncident light is focused with a cylindrical lens on the optical axis into an intense light strip onto the input face of a photorefractive crystal on the optical axis. The crystal includes optional anti-reflection coatings proximate to the input and output face. A broadband high reflection coating is proximate to the input face for reflection of all radiation from approximately 0.68 to at least out to 1.5 micrometers wavelength. Light exiting from the output face of the crystal results from a photorefractive process that includes a transmitted beam and beam fan. The beam fan is fanned out of the optical path in a direction determined by the c-axis, dominant electro-optic coefficient, and charge carriers participating in the photorefractive process.Type: GrantFiled: November 30, 1994Date of Patent: September 12, 1995Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Mary J. Miller, Gregory J. Salamo, William W. Clark, III, Gary L. Wood, Edward J. Sharp, Brian D. Monson
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Patent number: 5317442Abstract: A universal IFF technique and system utilizes a real-time communication l established between both parties allowing the approximate immediate transferral of digital information with positive direction and identification of both parties achieved. A pump laser emits a first signal at a first position and a remote laser beacon emits a second signal at a second position, both signals at nominally the same wavelength. A MPPCM receives the first signal which establishes a beam fan. The MPPCM and first signal scans about a region of interest to intercept the second signal. The second signal provides a second input signal into the MPPCM so that a two-way phase conjugation signal builds up and lock-on is established.Type: GrantFiled: July 29, 1993Date of Patent: May 31, 1994Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Edward J. Sharp, Gary L. Wood, William W. Clark, III, Gregory J. Salamo
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Patent number: 5073705Abstract: This is a new use for known photorefractive crystals. If input radiation taining both non-coherent and multiple-line coherent radiation is directed into such a crystal from a predetermined range of directions with respect to the C axis of the crystal, rainbow scattering of the coherent radiation occurs, whereas normal scattering of the non-coherent radiation occurs. A detector toward which input radiation is directed through the crystal is thus protected from high-power, multiple-line coherent radiation such as that provided by a threat laser.Type: GrantFiled: April 6, 1990Date of Patent: December 17, 1991Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Edward J. Sharp, Mary J. Miller, William W. Clark, III, Gary L. Wood, Gregory J. Salamo