Patents by Inventor David L. Trumper
David L. Trumper 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: 20190125946Abstract: A highly portable advanced adult and pediatric compact ECLS system is based around an integrated pump-oxygenator. The system includes a central a blood inlet and flow path extending along a general longitudinal axis of the system; a pump housing defining a pump inlet in fluid communication with the central blood flow path; an impeller rotationally received within the area of the pump inlet, wherein the impeller is magnetically supported and magnetically driven; an array of hollow fiber membranes configured for gas transfer within the system for oxygenation of blood flowing across the hollow fiber membranes, wherein the membranes include a covalently-bonded heparin-based bioactive surface, and wherein the blood flow path extends from the impeller to a position to flow perpendicular over the array of hollow fiber membranes; and a blood outlet configured to receive blood flowing past the array of hollow fiber membranes.Type: ApplicationFiled: December 14, 2018Publication date: May 2, 2019Inventors: Mark Gartner, Minkyun Noh, David L. Trumper
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Patent number: 10177627Abstract: Described is a bearingless motor based upon a homopolar flux-biased magnetic bearing for force generation and a hysteresis motor for torque generation. The bearingless slice motor levitates and rotates a ring-shaped rotor made of a semi-hard magnetic material. The rotor is biased with a homopolar permanent-magnetic flux, on which 2-pole flux can be superimposed to generate suspension forces. Torque is generated by a hysteretic coupling between the rotor and a rotating multi-pole stator field.Type: GrantFiled: August 3, 2016Date of Patent: January 8, 2019Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGYInventors: Minkyun Noh, David L. Trumper
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Publication number: 20170306278Abstract: A device for controlling apical flow to a cell culture includes an apical insert that defines at least one inlet channel extending from an inlet port to an apical feed port and at least one outlet channel extending from an apical effluent port to an outlet port. The apical insert includes a projecting portion configured to extend into a cell culture insert to a depth that is less than a depth of the cell culture insert, and a contact surface configured to maintain a spatial relationship between the projecting portion and the cell culture insert.Type: ApplicationFiled: January 5, 2017Publication date: October 26, 2017Inventors: Transon V. Nguyen, Collin D.J. Edington, Emily C. Suter, Rebecca Lyn Carrier, David L. Trumper, Linda G. Griffith
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Publication number: 20170040868Abstract: Described is a bearingless motor based upon a homopolar flux-biased magnetic bearing for force generation and a hysteresis motor for torque generation. The bearingless slice motor levitates and rotates a ring-shaped rotor made of a semi-hard magnetic material. The rotor is biased with a homopolar permanent-magnetic flux, on which 2-pole flux can be superimposed to generate suspension forces. Torque is generated by a hysteretic coupling between the rotor and a rotating multi-pole stator field.Type: ApplicationFiled: August 3, 2016Publication date: February 9, 2017Inventors: Minkyun Noh, David L. Trumper
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Patent number: 9395317Abstract: A system and method for providing electromagnetic imaging through electroquasistatic sensing contains an electromagnetic sensor for imaging a sample. The electromagnetic sensor contains drive/sense electronics and a pixelated sensor array having an array of capacitive sensor electrodes that source electric fields that interact with the sample, and wherein the electrodes are individually drivable by the drive/sense electronics in a coordinated manner to establish a desired temporal and spatial pattern in which electrical properties of the electrodes are used to generate an image. Other components of the system include a precision motion controller, sensor head and associated electronics, and a computer for performing data acquisition and signal inversion.Type: GrantFiled: February 14, 2014Date of Patent: July 19, 2016Assignee: Massachusetts Institute of TechnologyInventors: Benjamin Louis Cannon, David L. Trumper, Jeffrey H. Lang, Markus Zahn
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Patent number: 8860260Abstract: A system contains a first actuator half containing a first pair of actuator coils and a second pair of actuator coils located above the first pair of actuator coils, wherein the first pair of actuator coils is connected to a first metallic backing. A second actuator half is also providing within the system, which contains a first pair of actuator coils and a second pair of actuator coils located above the first pair of actuator coils, wherein the first pair of actuator coils is connected to a second metallic backing. The system also contains a mechanical flexure suspension having at least one flexure supporting a permanent magnet that is capable of moving, wherein the mechanical flexure suspension is located between the first actuator half and the second actuator half.Type: GrantFiled: December 17, 2012Date of Patent: October 14, 2014Assignee: Massachusetts Institute of TechnologyInventors: David L. Trumper, Ian MacKenzie
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Publication number: 20140159748Abstract: A system and method for providing electromagnetic imaging through electroquasistatic sensing contains an electromagnetic sensor for imaging a sample. The electromagnetic sensor contains drive/sense electronics and a pixelated sensor array having an array of capacitive sensor electrodes that source electric fields that interact with the sample, and wherein the electrodes are individually drivable by the drive/sense electronics in a coordinated manner to establish a desired temporal and spatial pattern in which electrical properties of the electrodes are used to generate an image. Other components of the system include a precision motion controller, sensor head and associated electronics, and a computer for performing data acquisition and signal inversion.Type: ApplicationFiled: February 14, 2014Publication date: June 12, 2014Applicant: Massachusetts lnstitute of TechnologyInventors: Benjamin Louis Cannon, David L. Trumper, Jeffrey H. Lang, Markus Zahn
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Patent number: 8742770Abstract: A system for providing electromagnetic imaging through magnetoquasistatic sensing contains an electromagnetic sensor for imaging a sample. The electromagnetic sensor contains drive/sense electronics and a pixelated sensor array having an array of inductive loops that source magnetic fields that interact with the sample, wherein the inductive loops are individually drivable by the drive/sense electronics in a coordinated manner to establish a desired temporal and spatial pattern in which electrical properties of the inductive loops are used to generate an image. Other components of the system include a precision motion controller, sensor head and associated electronics, and a computer for performing data acquisition and signal inversion.Type: GrantFiled: June 7, 2013Date of Patent: June 3, 2014Assignee: Massachusetts Institute of TechnologyInventors: David L. Trumper, Benjamin Louis Cannon, Jeffrey H. Lang, Markus Zahn
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Patent number: 8669771Abstract: A system and method for providing electromagnetic imaging through electroquasistatic sensing contains an electromagnetic sensor for imaging a sample. The electromagnetic sensor contains drive/sense electronics and a pixelated sensor array having an array of capacitive sensor electrodes that source electric fields that interact with the sample, and wherein the electrodes are individually drivable by the drive/sense electronics in a coordinated manner to establish a desired temporal and spatial pattern in which electrical properties of the electrodes are used to generate an image. Other components of the system include a precision motion controller, sensor head and associated electronics, and a computer for performing data acquisition and signal inversion.Type: GrantFiled: January 28, 2010Date of Patent: March 11, 2014Assignee: Massachusetts Institute of TechnologyInventors: David L. Trumper, Jeffrey H. Lang, Benjamin L. Cannon, Markus Zahn
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Publication number: 20130271123Abstract: A system for providing electromagnetic imaging through magnetoquasistatic sensing contains an electromagnetic sensor for imaging a sample. The electromagnetic sensor contains drive/sense electronics and a pixelated sensor array having an array of inductive loops that source magnetic fields that interact with the sample, wherein the inductive loops are individually drivable by the drive/sense electronics in a coordinated manner to establish a desired temporal and spatial pattern in which electrical properties of the inductive loops are used to generate an image. Other components of the system include a precision motion controller, sensor head and associated electronics, and a computer for performing data acquisition and signal inversion.Type: ApplicationFiled: June 7, 2013Publication date: October 17, 2013Inventors: David L. Trumper, Benjamin Louis Cannon, Jeffrey H. Lang, Markus Zahn
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Patent number: 8482300Abstract: A system for providing electromagnetic imaging through magnetoquasistatic sensing contains an electromagnetic sensor for imaging a sample. The electromagnetic sensor contains drive/sense electronics and a pixelated sensor array having an array of inductive loops that source magnetic fields that interact with the sample, wherein the inductive loops are individually drivable by the drive/sense electronics in a coordinated manner to establish a desired temporal and spatial pattern in which electrical properties of the inductive loops are used to generate an image. Other components of the system include a precision motion controller, sensor head and associated electronics, and a computer for performing data acquisition and signal inversion.Type: GrantFiled: January 28, 2010Date of Patent: July 9, 2013Assignee: Massachusetts Institute of TechnologyInventors: David L. Trumper, Jeffrey H. Lang, Benjamin L. Cannon, Markus Zahn
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Patent number: 8358039Abstract: A system contains a first actuator half containing a first pair of actuator coils and a second pair of actuator coils located above the first pair of actuator coils, wherein the first pair of actuator coils is connected to a first metallic backing. A second actuator half is also providing within the system, which contains a first pair of actuator coils and a second pair of actuator coils located above the first pair of actuator coils, wherein the first pair of actuator coils is connected to a second metallic backing. The system also contains a mechanical flexure suspension having at least one flexure supporting a permanent magnet that is capable of moving, wherein the mechanical flexure suspension is located between the first actuator half and the second actuator half.Type: GrantFiled: October 17, 2009Date of Patent: January 22, 2013Assignee: Massachusetts Institute of TechnologyInventors: David L. Trumper, Ian MacKenzie
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Publication number: 20100253332Abstract: A system for providing electromagnetic imaging through magnetoquasistatic sensing contains an electromagnetic sensor for imaging a sample. The electromagnetic sensor contains drive/sense electronics and a pixelated sensor array having an array of inductive loops that source magnetic fields that interact with the sample, wherein the inductive loops are individually drivable by the drive/sense electronics in a coordinated manner to establish a desired temporal and spatial pattern in which electrical properties of the inductive loops are used to generate an image. Other components of the system include a precision motion controller, sensor head and associated electronics, and a computer for performing data acquisition and signal inversion.Type: ApplicationFiled: January 28, 2010Publication date: October 7, 2010Applicant: Massachusetts Institute of TechnologyInventors: David L. Trumper, Jeffrey H. Lang, Benjamin L. Cannon, Markus Zahn
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Publication number: 20100194374Abstract: A system and method for providing electromagnetic imaging through electroquasistatic sensing contains an electromagnetic sensor for imaging a sample. The electromagnetic sensor contains drive/sense electronics and a pixelated sensor array having an array of capacitive sensor electrodes that source electric fields that interact with the sample, and wherein the electrodes are individually drivable by the drive/sense electronics in a coordinated manner to establish a desired temporal and spatial pattern in which electrical properties of the electrodes are used to generate an image. Other components of the system include a precision motion controller, sensor head and associated electronics, and a computer for performing data acquisition and signal inversion.Type: ApplicationFiled: January 28, 2010Publication date: August 5, 2010Applicant: Massachusetts Institute of TechnologyInventors: David L. Trumper, Jeffrey H. Lang, Benjamin L. Cannon, Markus Zahn
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Publication number: 20100100990Abstract: A system contains a first actuator half containing a first pair of actuator coils and a second pair of actuator coils located above the first pair of actuator coils, wherein the first pair of actuator coils is connected to a first metallic backing. A second actuator half is also providing within the system, which contains a first pair of actuator coils and a second pair of actuator coils located above the first pair of actuator coils, wherein the first pair of actuator coils is connected to a second metallic backing. The system also contains a mechanical flexure suspension having at least one flexure supporting a permanent magnet that is capable of moving, wherein the mechanical flexure suspension is located between the first actuator half and the second actuator half.Type: ApplicationFiled: October 17, 2009Publication date: April 22, 2010Applicant: Massachusetts Institute of TechnologyInventors: David L. Trumper, Ian MacKenzie
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Patent number: 7665983Abstract: A microcontact printing tool having a print unit including a stamp head with a stamp and a wafer chuck for retaining a substrate. The stamp contained by the stamped head movable relative to the substrate by an actuator and a stage. A plurality of sensors detect the position of the stamp relative to substrate. A method of using the printing tool that includes a real-time feedback for consistent and accurate application of force during the printing of the substrate. The stamp head includes a pressure chamber carrying the stamp. The stamp backing is deflected prior to contact of the stamp with the substrate to form a minimum point and the stamp backing and the stamp is returned to a plane to create a printing propagation contact. An apparatus has a master backing and a stamping backing in close proximity and the stamp material drawn in through a vacuum. The stamp is separated from the master by use of a parting fluid.Type: GrantFiled: August 17, 2006Date of Patent: February 23, 2010Assignee: Massachusetts Institute of TechnologyInventors: Amar Maruti Kendale, David L. Trumper
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Patent number: 7616084Abstract: The preferred embodiments of the present invention are directed to high bandwidth positioning systems such as fast tool servos (FTS). The applications of this invention include, for example, diamond turning of mold with structured surface for mass production of films for brightness enhancement and controlled reflectivity, diamond turning of molds for contact lens and micro-optical positioning devices. Preferred embodiments of the fast tool servo can have a closed-loop bandwidth of approximately 20±5 kHz, with acceleration of up to approximately 1000 G or more. The resolution or position error is approximately 1 nm root mean square (RMS). In a preferred embodiment, the full stroke of 50 ?m can be achieved up to 1 kHz operation.Type: GrantFiled: October 29, 2004Date of Patent: November 10, 2009Assignee: Massachusetts Institute of TechnologyInventors: Xiaodong Lu, David L. Trumper
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Patent number: 7574947Abstract: A high bandwidth rotary fast tool servo provides tool motion in a direction nominally parallel to the surface-normal of a workpiece at the point of contact between the cutting tool and workpiece. Three or more flexure blades having all ends fixed are used to form an axis of rotation for a swing arm that carries a cutting tool at a set radius from the axis of rotation. An actuator rotates a swing arm assembly such that a cutting tool is moved in and away from the lathe-mounted, rotating workpiece in a rapid and controlled manner in order to machine the workpiece. One or more position sensors provides rotation and position information for a swing arm to a control system. A control system commands and coordinates motion of the fast tool servo with the motion of a spindle, rotating table, cross-feed slide, and in-feed slide of a precision lathe.Type: GrantFiled: September 14, 2004Date of Patent: August 18, 2009Assignee: Massachusetts Institute of TechnologyInventors: Richard C. Montesanti, David L. Trumper, James L. Kirtley, Jr.
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Patent number: 7492117Abstract: The present invention provides a variable reluctance actuator system and method that can be adapted for simultaneous rotation and translation of a moving element by applying a normal-direction magnetic flux on the moving element. In a beneficial example arrangement, the moving element includes a swing arm that carries a cutting tool at a set radius from an axis of rotation so as to produce a rotary fast tool servo that provides a tool motion in a direction substantially parallel to the surface-normal of a workpiece at the point of contact between the cutting tool and workpiece. An actuator rotates a swing arm such that a cutting tool moves toward and away from a mounted rotating workpiece in a controlled manner in order to machine the workpiece. Position sensors provide rotation and displacement information for a swing arm to a control system.Type: GrantFiled: July 20, 2006Date of Patent: February 17, 2009Assignee: Lawrence Livermore National Security, LLCInventors: Richard C. Montesanti, David L. Trumper, James L. Kirtley, Jr.
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Patent number: 7437980Abstract: A high bandwidth rotary fast tool servo provides tool motion in a direction nominally parallel to the surface-normal of a workpiece at the point of contact between the cutting tool and workpiece. Three or more flexure blades having all ends fixed are used to form an axis of rotation for a swing arm that carries a cutting tool at a set radius from the axis of rotation. An actuator rotates a swing arm assembly such that a cutting tool is moved in and away from the lathe-mounted, rotating workpiece in a rapid and controlled manner in order to machine the workpiece. A pair of position sensors provides rotation and position information for a swing arm to a control system. A control system commands and coordinates motion of the fast tool servo with the motion of a spindle, rotating table, cross-feed slide, and in-feed slide of a precision lathe.Type: GrantFiled: June 1, 2004Date of Patent: October 21, 2008Assignee: Massachusetts Institute of TechnologyInventor: David L. Trumper