Patents by Inventor Radhika Nagpal
Radhika Nagpal 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: 10527507Abstract: An elastic strain sensor can be incorporated into an artificial skin that can sense flexing by the underlying support structure of the skin to detect and track motion of the support structure. The unidirectional elastic strain sensor can be formed by filling two or more channels in an elastic substrate material with a conductive liquid. At the ends of the channels, a loop port connects the channels to form a serpentine channel. The channels extend along the direction of strain and the loop portions have sufficiently large cross-sectional area in the direction transverse to the direction of strain that the sensor is unidirectional. The resistance is measured at the ends of the serpentine channel and can be used to determine the strain on the sensor. Additional channels can be added to increase the sensitivity of the sensor. The sensors can be stacked on top of each other to increase the sensitivity of the sensor.Type: GrantFiled: November 27, 2017Date of Patent: January 7, 2020Assignee: President and Fellows of Harvard CollegeInventors: Robert J. Wood, Yong-Lae Park, Carmel S. Majidi, Bor-rong Chen, Leia Stirling, Conor James Walsh, Radhika Nagpal, Diana Young, Yigit Menguc
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Patent number: 10086516Abstract: In a method for interactive marking by a mobile robot on a vertical surface, a mobile robot that includes a sensor and an actuated marker is displaced across a vertical surface. Features on, in or behind the vertical surface are detected with the sensor. Displacement of the mobile robot and actuation of the actuated marker is controlled in response to the detection of these features.Type: GrantFiled: September 30, 2016Date of Patent: October 2, 2018Assignee: President and Fellows of Harvard CollegeInventors: Zivthan A. Dubrovsky, Raphael G. Cherney, Michael Mogenson, Justin Werfel, Kathleen O'Donnell, Radhika Nagpal, Nils Napp, Hani M. Sallum, Julian U. da Silva Gillig
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Publication number: 20180143091Abstract: An elastic strain sensor can be incorporated into an artificial skin that can sense flexing by the underlying support structure of the skin to detect and track motion of the support structure. The unidirectional elastic strain sensor can be formed by filling two or more channels in an elastic substrate material with a conductive liquid. At the ends of the channels, a loop port connects the channels to form a serpentine channel. The channels extend along the direction of strain and the loop portions have sufficiently large cross-sectional area in the direction transverse to the direction of strain that the sensor is unidirectional. The resistance is measured at the ends of the serpentine channel and can be used to determine the strain on the sensor. Additional channels can be added to increase the sensitivity of the sensor. The sensors can be stacked on top of each other to increase the sensitivity of the sensor.Type: ApplicationFiled: November 27, 2017Publication date: May 24, 2018Applicant: President and Fellows of Harvard CollegeInventors: Robert J. Wood, Yong-Lae Park, Carmel S. Majidi, Bor-rong Chen, Leia Stirling, Conor James Walsh, Radhika Nagpal, Diana Young, Yigit Menguc
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Patent number: 9841331Abstract: An elastic strain sensor can be incorporated into an artificial skin that can sense flexing by the underlying support structure of the skin to detect and track motion of the support structure. The uni-directional elastic strain sensor can be formed by filling two or more channels in an elastic substrate material with a conductive liquid. At the ends of the channels, a loop port connects the channels to form a serpentine channel. The channels extend along the direction of strain and the loop portions have sufficiently large cross-sectional area in the direction transverse to the direction of strain that the sensor is unidirectional. The resistance is measured at the ends of the serpentine channel and can be used to determine the strain on the sensor. Additional channels can be added to increase the sensitivity of the sensor. The sensors can be stacked on top of each other to increase the sensitivity of the sensor.Type: GrantFiled: September 24, 2012Date of Patent: December 12, 2017Assignee: President and Fellows of Harvard CollegeInventors: Robert J. Wood, Yong-Lae Park, Carmel S. Majidi, Bor-rong Chen, Leia Stirling, Conor James Walsh, Radhika Nagpal, Diana Young, Yigit Menguc
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Publication number: 20170036349Abstract: In a method for interactive marking by a mobile robot on a vertical surface, a mobile robot that includes a sensor and an actuated marker is displaced across a vertical surface. Features on, in or behind the vertical surface are detected with the sensor. Displacement of the mobile robot and actuation of the actuated marker is controlled in response to the detection of these features.Type: ApplicationFiled: September 30, 2016Publication date: February 9, 2017Applicant: President and Fellows of Harvard CollegeInventors: Zivthan A. Dubrovsky, Raphael G. Cherney, Michael Mogenson, Justin Werfel, Kathleen O'Donnell, Radhika Nagpal, Nils Napp, Hani M. Sallum, Julian U. da Silva Gillig
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Publication number: 20150088043Abstract: A flexible orthotic device includes two or more active components embedded in a sheet material. Each active component can include a controller and one or more actuation elements controlled by the controller. The two or more active components can communicate with each other and cause the active components to contract and dynamically change the structural characteristics of the orthotic device. By coordinating the motion of two or more active components, the flexible orthotic device can be programmed to assist or resist the motion of a subject wearing the device. The orthotic device can be effectively employed to provide locomotion assistance, gait rehabilitation, and gait training. Similarly, the orthotic device may be applied to the wrist, elbow, torso, or any other body part. The active components may be actuated to effectively transmit force to a body part, such as a limb, to assist with movement when desired.Type: ApplicationFiled: September 1, 2012Publication date: March 26, 2015Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGEInventors: Eugene C. Goldfield, Yong-lae Park, Bor-rong Chen, Carmel Majidi, Robert J. Wood, Radhika Nagpal
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Publication number: 20140238153Abstract: An elastic strain sensor can be incorporated into an artificial skin that can sense flexing by the underlying support structure of the skin to detect and track motion of the support structure. The unidirectional elastic strain sensor can be formed by filling two or more channels in an elastic substrate material with a conductive liquid. At the ends of the channels, a loop port connects the channels to form a serpentine channel. The channels extend along the direction of strain and the loop portions have sufficiently large cross-sectional area in the direction transverse to the direction of strain that the sensor is unidirectional. The resistance is measured at the ends of the serpentine channel and can be used to determine the strain on the sensor. Additional channels can be added to increase the sensitivity of the sensor. The sensors can be stacked on top of each other to increase the sensitivity of the sensor.Type: ApplicationFiled: September 24, 2012Publication date: August 28, 2014Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGEInventors: Robert J. Wood, Yong-Lae Park, Carmel S. Majidi, Bor-rong Chen, Leia Stirling, Connor James Walsh, Radhika Nagpal, Diana Young, Yigit Menguc
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Publication number: 20120238914Abstract: An actively controlled orthotic device includes active components that dynamically change the structural characteristics of the orthotic device according to the orientation and locomotion of the corresponding body part, or according to the changing needs of the subject over a period of use. Accordingly, the orthotic device can be effectively employed to provide locomotion assistance, gait rehabilitation, and gait training. Similarly, the orthotic device may be applied to the wrist, elbow, torso, or any other body part. The active components may be actuated to effectively transmit force to a body part, such as a limb, to assist with movement when desired. Additionally or alternatively, the active components may also be actuated to provide support of varying rigidity for the corresponding body part.Type: ApplicationFiled: January 13, 2012Publication date: September 20, 2012Applicants: President and Fellows of Harvard College, Massachusetts Institute of Technology, Trustees of Boston University, Children's Medical Center CorporationInventors: Eugene C. Goldfield, Robert J. Wood, Radhika Nagpal, Chih-Han Yu, Leia A. Stirling, Elliot Saltzman, Dava Newman
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Publication number: 20110077773Abstract: A modular robot having a plurality of agents for performing movements is provided. Each of these agents includes a computation component for performing computations needed in performing selective movements of the modular robot structure. A communication component is coupled to the computation module. The communication component allows each agent to communicate with its immediate physically-connected neighbor. An actuation component performs actuations associated with movements of the modular robot. A sensing component measures positional information that allows the agent to determine its respective environment. Once a defined shape or a desired task has been specified, each of the agents and their respective component coordinate their respective movements until the defined shape is reached.Type: ApplicationFiled: April 28, 2010Publication date: March 31, 2011Inventors: Chih-Han Yu, Radhika Nagpal