Patents by Inventor Sridhar Kota

Sridhar Kota 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).

  • Publication number: 20220233380
    Abstract: A negative-pressure dome includes a transparent domed shield, a flexible skirt attached to the perimeter of the domed shield, a hose attachment port formed on the domed shield; and access openings in at least one of the domed shield and the flexible skirt. The transparent domed shield consists of a clear rigid plastic. The access openings may be at least partially occluded by flexible flaps that are deflectable to increase an open cross-section of the access openings. In a first configuration, the access openings are disposed in the domed shield sized to cover a face and are sized to have a cross-section between 3 cm2 and 200 cm2. In a second configuration, the access openings are disposed in the flexible skirt and are sized to have a cross-section between 30 cm2 and 200 cm2, while the domed shield is sized to cover head and chest of a subject.
    Type: Application
    Filed: January 21, 2022
    Publication date: July 28, 2022
    Inventors: Sridhar Kota, Shalini Sarala Kota
  • Publication number: 20220184427
    Abstract: A personal respiratory isolation assembly includes a manifold-filter assembly configured to be attached to a suction port of a respiratory pump. The manifold-filter assembly has a bowl-shaped manifold housing with an inlet adapter configured for connecting a hose, and a filter releasably attachable to the manifold housing. The isolation assembly further comprises an exhaust baffle with a plurality of openings. The exhaust baffle fits a pressure port of the respiratory pump. A method of operating a personal respiratory isolation assembly involves attaching an exhaust baffle to an outlet adapter of a respiratory pump; connecting a manifold housing to a suction port of the respiratory pump with a filter disposed between the manifold housing and the suction port; connecting a hose to an inlet adapter of the manifold housing; attaching the hose to a hose port of a hood; and starting to operate the respiratory pump.
    Type: Application
    Filed: December 8, 2021
    Publication date: June 16, 2022
    Inventors: Shalini Sarala Kota, Sridhar Kota, Kevin Ward, David C. Hornick, Robert Schartow, James D. Ervin, Gregory F. Ervin
  • Patent number: 11255356
    Abstract: An actuator system is provided having a fluidic body member having a surface configured to be deformable in response to a pressure differential. One or more auxetic elements are disposed on and engage the surface of the fluidic body member in the form of a network of beam elements. The auxetic element has a negative Poisson's ratio resulting in kinematics such that upon application of the internal fluid pressure, the surface of the fluidic body member is caused to have specific kinematics enabling planar and 3D motions. In some embodiments, the plurality of non-auxetic elements cooperate with a plurality of auxetic elements.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: February 22, 2022
    Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Audrey Sedal, Joshua Bishop-Moser, Sridhar Kota, Michael Fisher, Margaret Kohler, Alan Wineman
  • Patent number: 11174002
    Abstract: An edge-morphing arrangement for an airfoil includes a compliant upper surface and a compliant lower surface that are joined together. An actuator is coupled to a driven surface and actuated to move the driven surface and change the shape thereof, with the non-driven surface changing its shape in response to actuation of the driven surface. The upper and lower surfaces can be part of a sub-flap mounted to a traditional flap of the fixed wing of an airplane. The upper and lower surfaces can be mounted to existing structure in the flap, or the flap components can be mounted to the sub-flap. The upper and lower surfaces can alternatively replace the traditional flap in the fixed wing of an aircraft. The upper and lower surfaces are continuous and can be deflected upward, downward, or twisted in a span-wise direction relative to the flap or wing.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: November 16, 2021
    Assignee: FlexSys, Inc.
    Inventors: Sridhar Kota, Gregory F. Ervin, Jia-Hsuan Lo, Kerr-Jia Lu, Dragan Maric, Mark R. Trost, Ruey-Khan K. Tsang
  • Publication number: 20210317679
    Abstract: A collapsible isolation tent assembly includes a collapsible frame assembly, a flexible skin of impermeable material, and an air exchange arrangement, and further an air pump configured for being connected to the air exchange arrangement to effect a unidirectional air flow through the air exchange arrangement. The air pump has a pump capacity within the range of 85 per minute through 20,000 liters per minute. Openings in the flexible skin or around edges of the collapsible tent allow for an air flow compensating for the unidirectional air flow created by the air pump, and the collapsible isolation tent has a footprint dimensioned to be placed on a support surface for an individual patient, for example a hospital bed. A method for preventing air containing airborne pathogens from contaminating a surrounding space or the interior of the isolation tent involves operating an air pump in fluid communication with the collapsible tent.
    Type: Application
    Filed: November 10, 2020
    Publication date: October 14, 2021
    Inventors: David Hornick, Sridhar Kota, Benjamin S. Bassin, Kevin R. Ward
  • Publication number: 20210281886
    Abstract: A visible wearable device to be worn by a user having one or more housings configured to be worn by the user, one or more cameras disposed in the housing and configured to record one or more visual scenes and output one or more visual data files, one or more power sources for powering the one or more cameras, and one or more transmitters transmitting the one or more visual data files to a location remote from the user. The stored data to be released only in response to an order of a court of competent jurisdiction.
    Type: Application
    Filed: June 27, 2019
    Publication date: September 9, 2021
    Inventors: Sridhar KOTA, Kiran Mohan KOTA, Alexander R. W. MCMILLAN, Paul W. KEBERLY, Lakshmi Venkatesh KAKUMANI, Bargav NARAPAREDDY
  • Publication number: 20210095700
    Abstract: An actuator system is provided having a fluidic body member having a surface configured to be deformable in response to a pressure differential. One or more auxetic elements are disposed on and engage the surface of the fluidic body member in the form of a network of beam elements. The auxetic element has a negative Poisson's ratio resulting in kinematics such that upon application of the internal fluid pressure, the surface of the fluidic body member is caused to have specific kinematics enabling planar and 3D motions. In some embodiments, the plurality of non-auxetic elements cooperate with a plurality of auxetic elements.
    Type: Application
    Filed: August 31, 2020
    Publication date: April 1, 2021
    Inventors: Audrey SEDAL, Joshua BISHOP-MOSER, Sridhar KOTA, Michael FISHER, Margaret KOHLER, Alan WINEMAN
  • Patent number: 10767675
    Abstract: A mechanism is hereby disclosed that, when activated in the linear direction of its axis, will expand and contract radially. The novel nature of the device is that of compliant methods and materials used in its design. Compliant members, referred to as dyads, translate the motion and imply resistance in a single structure. Thus eliminating the need for separate members, hinges, pins, springs and the associated assembly. When these compliant dyads are combined in the novel configurations hereby disclosed, a device is created that expands (or contracts) in multiple directions from its primary axis of actuation. Furthermore, one or more actuation dyad sets could be arranged at various angles relative to the global vertical axis. The radial expansion/contraction can be 2D or 3D by adding more primary activation dyad sets. Such a device can be applied to many applications and industries. One such application is for gripping the inside of a tube or object for moving manually or in automation.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: September 8, 2020
    Assignee: FLEXSYS, INC.
    Inventors: Sridhar Kota, Robert Schartow
  • Publication number: 20190061910
    Abstract: An edge-morphing arrangement for an airfoil includes a compliant upper surface and a compliant lower surface that are joined together. An actuator is coupled to a driven surface and actuated to move the driven surface and change the shape thereof, with the non-driven surface changing its shape in response to actuation of the driven surface. The upper and lower surfaces can be part of a sub-flap mounted to a traditional flap of the fixed wing of an airplane. The upper and lower surfaces can be mounted to existing structure in the flap, or the flap components can be mounted to the sub-flap. The upper and lower surfaces can alternatively replace the traditional flap in the fixed wing of an aircraft. The upper and lower surfaces are continuous and can be deflected upward, downward, or twisted in a span-wise direction relative to the flap or wing.
    Type: Application
    Filed: February 28, 2017
    Publication date: February 28, 2019
    Inventors: Sridhar Kota, Gregory F. Ervin, Jia-Hsuan Lo, Kerr-Jia Lu, Dragan Maric, Mark R. Trost, Ruey-Khan K. Tsang
  • Patent number: 9835184
    Abstract: A fiber reinforced actuator includes first and second sets of fibers coupled with and arranged along a control volume to controllably constrain mobility of an actuator body. Fibers of the first set can be arranged with respect to fibers of the second set and with respect to a central axis to impart the actuator with various combinations of torsional and axial force responses. A third fiber may be included to form a helical actuator. A plurality of actuators can be coupled together for coordinated movement, thereby providing additional mobility directions, such as trans-actuator bending. The fiber-reinforced actuators and actuator assemblies are potential low cost, low energy consumption, lightweight, and simple replacements for existing motion devices such as servo-motor driven robots.
    Type: Grant
    Filed: August 11, 2014
    Date of Patent: December 5, 2017
    Assignee: The Regents of the University of Michigan
    Inventors: Joshua Bishop-Moser, Girish Krishnan, Sridhar Kota
  • Publication number: 20170314588
    Abstract: A mechanism is hereby disclosed that, when activated in the linear direction of its axis, will expand and contract radially. The novel nature of the device is that of compliant methods and materials used in its design. Compliant members, referred to as dyads, translate the motion and imply resistance in a single structure. Thus eliminating the need for separate members, hinges, pins, springs and the associated assembly. When these compliant dyads are combined in the novel configurations hereby disclosed, a device is created that expands (or contracts) in multiple directions from its primary axis of actuation. Furthermore, one or more actuation dyad sets could be arranged at various angles relative to the global vertical axis. The radial expansion/contraction can be 2D or 3D by adding more primary activation dyad sets. Such a device can be applied to many applications and industries. One such application is for gripping the inside of a tube or object for moving manually or in automation.
    Type: Application
    Filed: May 2, 2017
    Publication date: November 2, 2017
    Applicant: FLEXSYS, INC.
    Inventors: SRIDHAR KOTA, ROBERT SCHARTOW
  • Publication number: 20170274976
    Abstract: An edge morphing arrangement for an airfoil having upper and lower control surfaces is provided with an elongated edge portion that overlies the edge of the airfoil, the edge portion having a surface element having first and second edges that communicate with, and form extensions of, respective ones of the upper and lower control surfaces of the elongated airfoil. The surface elements are formed of deformable compliant material that extends cross-sectionally from the first surface element edge to an apex of the edge portion, and to the second surface element edge. There is additionally provided a driving link having first and second driving link ends, the first driving link end being coupled to the interior of one of the first and second rib portions. The second end is arranged to receive a morphing force, and the rib element is deformed in response to the morphing force.
    Type: Application
    Filed: June 13, 2017
    Publication date: September 28, 2017
    Applicant: FLEXSYS, INC.
    Inventors: Joel A. Hetrick, Sridhar Kota, Gregory F. Ervin
  • Patent number: 9676471
    Abstract: An edge morphing arrangement for an airfoil having upper and lower control surfaces is provided with an elongated edge portion that overlies the edge of the airfoil, the edge portion having a surface element having first and second edges that communicate with, and form extensions of, respective ones of the upper and lower control surfaces of the elongated airfoil. The surface elements are formed of deformable compliant material that extends cross-sectionally from the first surface element edge to an apex of the edge portion, and to the second surface element edge. There is additionally provided a driving link having first and second driving link ends, the first driving link end being coupled to the interior of one of the first and second rib portions. The second end is arranged to receive a morphing force, and the rib element is deformed in response to the morphing force.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: June 13, 2017
    Assignee: FLEXSYS, INC.
    Inventors: Joel A. Hetrick, Sridhar Kota, Gregory F. Ervin
  • Publication number: 20150210376
    Abstract: An edge morphing arrangement for an airfoil having upper and lower control surfaces is provided with an elongated edge portion that overlies the edge of the airfoil, the edge portion having a surface element having first and second edges that communicate with, and form extensions of, respective ones of the upper and lower control surfaces of the elongated airfoil. The surface elements are formed of deformable compliant material that extends cross-sectionally from the first surface element edge to an apex of the edge portion, and to the second surface element edge. There is additionally provided a driving link having first and second driving link ends, the first driving link end being coupled to the interior of one of the first and second rib portions. The second end is arranged to receive a morphing force, and the rib element is deformed in response to the morphing force.
    Type: Application
    Filed: August 26, 2014
    Publication date: July 30, 2015
    Applicant: FlexSys, Inc.
    Inventors: Joel A. Hetrick, Sridhar Kota, Gregory F. Ervin
  • Publication number: 20150040753
    Abstract: A fiber reinforced actuator includes first and second sets of fibers coupled with and arranged along a control volume to controllably constrain mobility of an actuator body. Fibers of the first set can be arranged with respect to fibers of the second set and with respect to a central axis to impart the actuator with various combinations of torsional and axial force responses. A third fiber may be included to form a helical actuator. A plurality of actuators can be coupled together for coordinated movement, thereby providing additional mobility directions, such as trans-actuator bending. The fiber-reinforced actuators and actuator assemblies are potential low cost, low energy consumption, lightweight, and simple replacements for existing motion devices such as servo-motor driven robots.
    Type: Application
    Filed: August 11, 2014
    Publication date: February 12, 2015
    Inventors: Joshua Bishop-Moser, Girish Krishnan, Sridhar Kota
  • Publication number: 20140306576
    Abstract: A displacement amplifier receives an actuation displacement signal from a piezoelectric actuator. The displacement signal is amplified by one or more stages of compliant elements, and a corresponding force is applied to a load. Wide frequency response is achieved in response to the resilience characteristics of the compliant elements that are formed from any of several materials, illustratively aluminum, steel, titanium, plastics, composites, etc., and are produced by any of several manufacturing techniques, illustratively extrusion, die casting, forging, etc. The compliant elements can be configured as plural compliant mechanical displacement amplifier stages. In bilateral arrangements displacement signals from distal ends of the motive source are applied to symmetrical, or mirror image, arrangements of compliant elements. The motive source, which may be a piezoelectric actuator, delivers its displacement signal at one end thereof to one or more compliant elements.
    Type: Application
    Filed: December 19, 2013
    Publication date: October 16, 2014
    Applicant: FlexSys, Inc.
    Inventors: James D. Ervin, Dragan Maric, Gregory F. Ervin, Sridhar Kota, Joel A. Hetrick
  • Publication number: 20140289988
    Abstract: A wiper has a wiper arm having first and second ends. A leaf spring urges the wiper arm and a compliant force distribution arrangement toward the surface, and a mounting arrangement couples the first end of the wiper arm and the leaf spring element to a source of motion. The wiper arm has a first end coupling the first end of the wiper arm member to a source of motion, and a compliant force distributor is coupled to the second end, having plural resilient beam members integrally formed with each other and adapted to engage a wiper blade. A wiper mount has a mounting element having a mounting portion coupled to a source of motion and a drive portion for engaging the wiper arm. The leaf spring element also has a mounting portion coupled to the source of motion, and has a drive portion for engaging the wiper arm.
    Type: Application
    Filed: December 13, 2012
    Publication date: October 2, 2014
    Applicant: FlexSys, Inc.
    Inventors: Gregory F. Ervin, Sridhar Kota
  • Patent number: 8814101
    Abstract: An edge morphing arrangement for an airfoil having upper and lower control surfaces is provided with an elongated edge portion that overlies the edge of the airfoil, the edge portion having a surface element having first and second edges that communicate with, and form extensions of, respective ones of the upper and lower control surfaces of the elongated airfoil. The surface elements are formed of deformable compliant material that extends cross-sectionally from the first surface element edge to an apex of the edge portion, and to the second surface element edge. There is additionally provided a driving link having first and second driving link ends, the first driving link end being coupled to the interior of one of the first and second rib portions. The second end is arranged to receive a morphing force, and the rib element is deformed in response to the morphing force.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: August 26, 2014
    Assignee: FlexSys, Inc.
    Inventors: Joel A. Hetrick, Gregory F. Ervin, Sridhar Kota
  • Publication number: 20130264427
    Abstract: An edge morphing arrangement for an airfoil having upper and lower control surfaces is provided with an elongated edge portion that overlies the edge of the airfoil, the edge portion having a surface element having first and second edges that communicate with, and form extensions of, respective ones of the upper and lower control surfaces of the elongated airfoil. The surface elements are formed of deformable compliant material that extends cross-sectionally from the first surface element edge to an apex of the edge portion, and to the second surface element edge. There is additionally provided a driving link having first and second driving link ends, the first driving link end being coupled to the interior of one of the first and second rib portions. The second end is arranged to receive a morphing force, and the rib element is deformed in response to the morphing force.
    Type: Application
    Filed: March 15, 2013
    Publication date: October 10, 2013
    Applicant: FlexSys, Inc.
    Inventors: Joel A. Hetrick, Gregory F. Ervin, Sridhar Kota
  • Patent number: 8418966
    Abstract: An edge mo?hing arrangement for an airfoil having upper and lower control surfaces is provided with a rib element arranged to overlie the edge of the airfoil. The rib element has first and second rib portions arranged to communicate with respectively associated ones of the upper and lower control surfaces of the airfoil. A first compliant linkage element has first and second ends and is disposed between the first and second rib portions of the rib element, the first and second ends are each coupled to the interior of a respectively associated one of the first and second rib portions. There is additionally provided a driving link having first and second driving link ends, the first driving link end being coupled to the interior of a selectable one of the first and second rib portions.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: April 16, 2013
    Assignee: FlexSys, Inc.
    Inventors: Joel A. Hetrick, Sridhar Kota, Gregory F. Ervin