Patents by Inventor David Trumper
David 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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Patent number: 11732229Abstract: Fluidic multiwell bioreactors are provided as a microphysiological platform for in vitro investigation of multi-organ crosstalks for an extended period of time of at least weeks and months. The disclosed platform is featured with one or more improvements over existing bioreactors, including on-board pumping for pneumatically driven fluid flow, a redesigned spillway for self-leveling from source to sink, a non-contact built-in fluid level sensing device, precise control on fluid flow profile and partitioning, and facile reconfigurations such as daisy chaining and multilayer stacking. The platform supports the culture of multiple organs in a microphysiological, interacted systems, suitable for a wide range of biomedical applications including systemic toxicity studies and physiology-based pharmacokinetic and pharmacodynamic predictions. A process to fabricate the disclosed bioreactors is also provided.Type: GrantFiled: November 20, 2020Date of Patent: August 22, 2023Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGYInventors: Linda Griffith, David Trumper, Collin Edington, Gaurav Rohatgi, Duncan Freake, Luis Soenksen, Brij Mohan Bhushan
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Publication number: 20220105510Abstract: Materials and methods of making have been developed for mass production of thermoplastic microfluidic chips. An elastomer diaphragm with a stress relieving feature can be used in microfluidic valves, pump diaphragms, and diaphragm micropumps. An optimized pump chamber design for complete fluid displacement and chamber geometry are provided. Microfluidic pressure regulators use a pneumatically actuated elastic membrane in a back-pressure regulator configuration. Microfluidic accumulators store pressurized fluid in a microfluidic chip. Removable caps for cell culture and a quick release top are described. Methods to incorporate hydrogels and ECM scaffolds have been developed. Electro pneumatic manifolds connect and control of multiple microfluidic devices vertically or on a rotary mechanism.Type: ApplicationFiled: October 6, 2021Publication date: April 7, 2022Inventors: Duncan A. O'Boyle, Linda Griffith, David Trumper
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Publication number: 20210139829Abstract: Fluidic multiwell bioreactors are provided as a microphysiological platform for in vitro investigation of multi-organ crosstalks for an extended period of time of at least weeks and months. The disclosed platform is featured with one or more improvements over existing bioreactors, including on-board pumping for pneumatically driven fluid flow, a redesigned spillway for self-leveling from source to sink, a non-contact built-in fluid level sensing device, precise control on fluid flow profile and partitioning, and facile reconfigurations such as daisy chaining and multilayer stacking. The platform supports the culture of multiple organs in a microphysiological, interacted systems, suitable for a wide range of biomedical applications including systemic toxicity studies and physiology-based pharmacokinetic and pharmacodynamic predictions. A process to fabricate the disclosed bioreactors is also provided.Type: ApplicationFiled: November 20, 2020Publication date: May 13, 2021Inventors: Linda Griffith, David Trumper, Collin Edington, Gaurav Rohatgi, Duncan Freake, Luis Soenksen, Brij Mohan Bhushan
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Patent number: 10876088Abstract: Fluidic multiwell bioreactors are provided as a microphysiological platform for in vitro investigation of multi-organ crosstalks for an extended period of time of at least weeks and months. The disclosed platform is featured with one or more improvements over existing bioreactors, including on-board pumping for pneumatically driven fluid flow, a redesigned spillway for self-leveling from source to sink, a non-contact built-in fluid level sensing device, precise control on fluid flow profile and partitioning, and facile reconfigurations such as daisy chaining and multilayer stacking. The platform supports the culture of multiple organs in a microphysiological, interacted systems, suitable for a wide range of biomedical applications including systemic toxicity studies and physiology-based pharmacokinetic and pharmacodynamic predictions. A process to fabricate the disclosed bioreactors is also provided.Type: GrantFiled: February 6, 2017Date of Patent: December 29, 2020Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGYInventors: Linda Griffith, David Trumper, Collin Edington, Gaurav Rohatgi, Duncan Freake, Luis Soenksen, Mohan Brij Bhushan
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Publication number: 20180272346Abstract: Fluidic multiwell bioreactors are provided as a microphysiological platform for in vitro investigation of multi-organ crosstalks with microbiome for an extended period of time of at least weeks and months. The platform has one or more improvements over existing bioreactors, including on-board pumping for pneumatically driven fluid flow, a redesigned spillway for self-leveling from source to sink, a non-contact built-in fluid level sensing device, precise control on fluid flow profile and partitioning, and facile reconfigurations such as daisy chaining and multilayer stacking. The platform supports the culture of multiple organs together with microbiome in a microphysiological, interacted systems, suitable for a wide range of biomedical applications including systemic toxicity studies and physiology-based pharmacokinetic and pharmacodynamic predictions. A process to fabricate the bioreactors is also provided.Type: ApplicationFiled: March 20, 2018Publication date: September 27, 2018Inventors: Linda G. Griffith, David Trumper, Collin Edington, Gaurav Rohatgi, Duncan Freake, Luis Soenksen, Timothy Kassis, Mohan Brij Bhushan
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Publication number: 20170227525Abstract: Fluidic multiwell bioreactors are provided as a microphysiological platform for in vitro investigation of multi-organ crosstalks for an extended period of time of at least weeks and months. The disclosed platform is featured with one or more improvements over existing bioreactors, including on-board pumping for pneumatically driven fluid flow, a redesigned spillway for self-leveling from source to sink, a non-contact built-in fluid level sensing device, precise control on fluid flow profile and partitioning, and facile reconfigurations such as daisy chaining and multilayer stacking. The platform supports the culture of multiple organs in a microphysiological, interacted systems, suitable for a wide range of biomedical applications including systemic toxicity studies and physiology-based pharmacokinetic and pharmacodynamic predictions. A process to fabricate the disclosed bioreactors is also provided.Type: ApplicationFiled: February 6, 2017Publication date: August 10, 2017Inventors: Linda Griffith, David Trumper, Collin Edington, Gaurav Rohatgi, Duncan Freake, Luis Soenksen, Mohan Brij Bhushan
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Patent number: 7772947Abstract: A system is provided for positioning an article. In this regard, one embodiment of the system, among others, can be broadly summarized as follows. The system contains a frame and a series of actuators connected to the frame, where the series of actuators contains at least one armature therein. The at least one armature is connected to an article and the series of actuators provides a force on the at least one armature to actuate movement of the at least one armature, thereby causing movement of the article. Each actuator further contains at least one winding set capable of providing a coil flux, at least one permanent magnet capable of providing a permanent magnet flux, and a magnetically conductive core having the permanent magnet therein and at least a portion of the at least one winding set therein. The series of actuators provides the at least one armature and the article with more than one degree of freedom.Type: GrantFiled: April 19, 2007Date of Patent: August 10, 2010Assignee: Massachusetts Institute of TechnologyInventors: David Trumper, Daniel J. Kluk
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Patent number: 7765905Abstract: A micropositioner is provided, which contains an outer magnetic pole-piece and an inner magnetic pole-piece located within the outer magnetic pole piece. At least one permanent magnet is located between the inner magnetic pole piece and the outer magnetic pole-piece. At least one coil is located between the inner magnetic pole-piece and the outer magnetic pole-piece, wherein the at least one coil is capable of directing magnetic flux between the inner magnetic pole-piece and the outer magnetic pole-piece. An outer movable shell is also movably connected to the outer magnetic pole-piece.Type: GrantFiled: April 20, 2007Date of Patent: August 3, 2010Assignee: Massachusetts Institute of TechnologyInventors: David Trumper, David Cuff
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Publication number: 20070261574Abstract: 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: ApplicationFiled: August 17, 2006Publication date: November 15, 2007Applicant: Massachusetts Institute of TechnologyInventors: Amar Kendale, David Trumper
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Publication number: 20070247007Abstract: A micropositioner is provided, which contains an outer magnetic pole-piece and an inner magnetic pole-piece located within the outer magnetic pole piece. At least one permanent magnet is located between the inner magnetic pole piece and the outer magnetic pole-piece. At least one coil is located between the inner magnetic pole-piece and the outer magnetic pole-piece, wherein the at least one coil is capable of directing magnetic flux between the inner magnetic pole-piece and the outer magnetic pole-piece. An outer movable shell is also movably connected to the outer magnetic pole-piece.Type: ApplicationFiled: April 20, 2007Publication date: October 25, 2007Applicant: Massachusetts Institute of TechnologyInventors: David Trumper, David Cuff
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Publication number: 20070222401Abstract: A system is provided for positioning an article. In this regard, one embodiment of the system, among others, can be broadly summarized as follows. The system contains a frame and a series of actuators connected to the frame, where the series of actuators contains at least one armature therein. The at least one armature is connected to an article and the series of actuators provides a force on the at least one armature to actuate movement of the at least one armature, thereby causing movement of the article. Each actuator further contains at least one winding set capable of providing a coil flux, at least one permanent magnet capable of providing a permanent magnet flux, and a magnetically conductive core having the permanent magnet therein and at least a portion of the at least one winding set therein. The series of actuators provides the at least one armature and the article with more than one degree of freedom.Type: ApplicationFiled: April 19, 2007Publication date: September 27, 2007Applicant: Massachusetts Institute of TechnologyInventors: David Trumper, Daniel Kluk
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Publication number: 20070018604Abstract: 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: ApplicationFiled: July 20, 2006Publication date: January 25, 2007Inventors: Richard Montesanti, David Trumper, James Kirtley
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Publication number: 20050223858Abstract: 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 tol kHz operation.Type: ApplicationFiled: October 29, 2004Publication date: October 13, 2005Applicant: Massachusetts Institute of TechnologyInventors: Xiaodong Lu, David Trumper
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Publication number: 20050166726Abstract: 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: ApplicationFiled: September 14, 2004Publication date: August 4, 2005Applicants: Massachusetts Institute of Technology, The Regents of the University of CaliforniaInventors: Richard Montesanti, David Trumper
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Publication number: 20050056125Abstract: 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: ApplicationFiled: June 1, 2004Publication date: March 17, 2005Applicant: Massachusetts Institute of TechnologyInventor: David Trumper