Patents by Inventor Chandra Sekher Yerramalli
Chandra Sekher Yerramalli 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).
-
Patent number: 9577297Abstract: An electrochemical cell is presented. The cell includes a housing having an interior surface defining a volume, and an elongated separator disposed in the housing volume. The elongated separator defines an axis of the cell. The separator has an inner surface and an outer surface. The inner surface of the separator defines a first compartment. The outer surface of the separator and the interior surface of the housing define a second compartment having a volume. The cell further includes a conductive matrix disposed in at least a portion of the second compartment volume such that the conductive matrix occupies a gap between the outer surface of the separator and the interior surface of the housing. The gap in the second compartment extends in a direction substantially perpendicular to the axis of the cell.Type: GrantFiled: July 13, 2015Date of Patent: February 21, 2017Assignee: General Electric CompanyInventors: Mohamed Rahmane, Badri Narayan Ramamurthi, Andrey Meshkov, Richard Louis Hart, Michael Alan Vallance, David Charles Bogdan, Jr., Chandra Sekher Yerramalli
-
Patent number: 9534580Abstract: A fluid turbine blade and method of fabrication are provided. The fluid turbine blade includes a centrally disposed longitudinal spar having a substantially circumferential cross section. The fluid turbine blade also includes at least one chord stiffener coupled to the longitudinal spar. The fluid turbine blade further includes a torsionally compliant segmented skin coupled to the at least one chord stiffener. The centrally disposed longitudinal spar and the torsionally compliant segmented skin are functionally decoupled to relieve the torsionally compliant segmented skin of one or more of a flapwise load condition, an edgewise load condition and a torsional load condition.Type: GrantFiled: February 27, 2013Date of Patent: January 3, 2017Assignee: General Electric CompanyInventors: Chandra Sekher Yerramalli, Peggy Lynn Baehmann, Ken Ivcar Salas, Mohammad Salah Attia, Haifeng Zhao
-
Publication number: 20150318586Abstract: An electrochemical cell is presented. The cell includes a housing having an interior surface defining a volume, and an elongated separator disposed in the housing volume. The elongated separator defines an axis of the cell. The separator has an inner surface and an outer surface. The inner surface of the separator defines a first compartment. The outer surface of the separator and the interior surface of the housing define a second compartment having a volume. The cell further includes a conductive matrix disposed in at least a portion of the second compartment volume such that the conductive matrix occupies a gap between the outer surface of the separator and the interior surface of the housing. The gap in the second compartment extends in a direction substantially perpendicular to the axis of the cell.Type: ApplicationFiled: July 13, 2015Publication date: November 5, 2015Inventors: Mohamed Rahmane, Badri Narayan Ramamurthi, Andrey Meshkov, Richard Louis Hart, Michael Alan Vallance, David Charles Bogdan, JR., Chandra Sekher Yerramalli
-
Patent number: 9083024Abstract: A battery stack includes a plurality of curved base layers, at least one curved bipolar layer, at least one anode layer disposed between a first curved base layer of the plurality of curved base layers and the at least one curved bipolar layer, at least one cathode layer disposed between the at least one bipolar layer, a second base layer and a plurality of seals. The first base layer and the at least one bipolar layer are provided with one or more seals that seal the first base layer to the at least one bipolar layer without contacting the anode and/or the cathode layer.Type: GrantFiled: October 27, 2011Date of Patent: July 14, 2015Assignee: General Electric CompanyInventors: Shu Ching Quek, Chandra Sekher Yerramalli, Curtis Alan Johnson, Reza Sarrafi-Nour
-
Patent number: 8971990Abstract: Nonlinear elastography systems and methods are provided. The elastography system includes a data acquisition module, such as an imaging device, and associated system control circuitry. The data acquisition module is configured to acquire various data, such as displacement and/or force data, from a material. A nonlinear transfer function is applied to the acquired data to generate information about the material's stiffness. In one implementation, a map representative of the material's stiffness is generated.Type: GrantFiled: December 21, 2012Date of Patent: March 3, 2015Assignee: General Electric CompanyInventors: K. M. K. Genghis Khan, Chandra Sekher Yerramalli
-
Publication number: 20140241895Abstract: A fluid turbine blade and method of fabrication are provided. The fluid turbine blade includes a centrally disposed longitudinal spar having a substantially circumferential cross section. The fluid turbine blade also includes at least one chord stiffener coupled to the longitudinal spar. The fluid turbine blade further includes a torsionally compliant segmented skin coupled to the at least one chord stiffener. The centrally disposed longitudinal spar and the torsionally compliant segmented skin are functionally decoupled to relieve the torsionally compliant segmented skin of one or more of a flapwise load condition, an edgewise load condition and a torsional load condition.Type: ApplicationFiled: February 27, 2013Publication date: August 28, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Chandra Sekher Yerramalli, Peggy Lynn Baehmann, Ken Ivcar Salas, Mohammad Salah Attia, Haifeng Zhao
-
Patent number: 8816635Abstract: An electrochemical cell includes an anode connectable to a current tap and a charging medium in electrical contact with the anode. A switching device is configured to stop a charging operation of the electrochemical cell upon activation by the charging medium.Type: GrantFiled: September 30, 2011Date of Patent: August 26, 2014Assignee: General Electric CompanyInventors: Chandra Sekher Yerramalli, Badri Narayan Ramamurthi, Reza Sarrafi-Nour, Andrew Philip Shapiro, Anil Raj Duggal
-
Publication number: 20140180058Abstract: Nonlinear elastography systems and methods are provided. The elastography system includes a data acquisition module, such as an imaging device, and associated system control circuitry. The data acquisition module is configured to acquire various data, such as displacement and/or force data, from a material. A nonlinear transfer function is applied to the acquired data to generate information about the material's stiffness. In one implementation, a map representative of the material's stiffness is generated.Type: ApplicationFiled: December 21, 2012Publication date: June 26, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: K.M.K. Genghis Khan, Chandra Sekher Yerramalli
-
Patent number: 8652689Abstract: An energy storage device includes a housing having an interior surface defining a volume and a plurality of solid electrolyte elements disposed in the volume. Each solid electrolyte element has a first surface that defines at least a portion of a first, cathodic chamber, and a second surface that defines a second, anodic chamber. A plurality of individual anodic chambers are thus provided, at least one of which is evacuated below atmospheric pressure. A majority of anodic chambers can be spaced from one another in a manner that provides a substantially uniform reaction rate throughout the cathodic chamber.Type: GrantFiled: February 24, 2010Date of Patent: February 18, 2014Assignee: General Electric CompanyInventors: Chandra Sekher Yerramalli, Anil Raj Duggal, Andrew Philip Shapiro, Mohamed Rahmane, Reza Sarrafi-Nour, Gregory John Parker, Alireza Namazifard, Badri Narayan Ramamurthi
-
Patent number: 8647767Abstract: An energy storage device includes a housing having an interior surface defining a volume and a plurality of solid electrolyte elements disposed in the volume. Each solid electrolyte element has a first surface that defines at least a portion of a first, cathodic chamber, and a second surface that defines a second, anodic chamber. A plurality of individual anode chambers are thus provided, a majority of which are in ionic communication with the cathode chamber through a majority of the solid electrolyte elements and which are also provided with a sodium level control mechanism.Type: GrantFiled: March 23, 2010Date of Patent: February 11, 2014Assignee: General Electric CompanyInventors: Reza Sarrafi-Nour, Andrew Shapiro, Chandra Sekher Yerramalli, Badri Narayan Ramamurthi
-
Patent number: 8617762Abstract: A method of processing a ceramic electrolyte suitable for use in a fuel cell is provided. The method comprises situating a ceramic electrolyte layer over an anode layer; and subjecting the ceramic electrolyte layer to a stress prior to operation of the fuel cell, by: exposing the top surface of the electrolyte layer to an oxidizing atmosphere and the bottom surface of the electrolyte layer to a reducing atmosphere; and heating the electrolyte layer. The stress causes a substantial increase in the number of microcracks, or in the average size of the microcracks, or in both the number of the microcracks and their average size. A solid oxide fuel cell comprising a ceramic electrolyte layer processed by the disclosed method is also provided.Type: GrantFiled: September 28, 2007Date of Patent: December 31, 2013Assignee: General Electric CompanyInventors: Shu Ching Quek, Chandra Sekher Yerramalli, Todd-Michael Striker, Badri Narayan Ramamurthi, Sylvia Marie DeCarr, Venkat Subramaniam Venkataramani
-
Publication number: 20130108912Abstract: A battery stack includes a plurality of curved base layers, at least one curved bipolar layer, at least one anode layer disposed between a first curved base layer of the plurality of curved base layers and the at least one curved bipolar layer, at least one cathode layer disposed between the at least one bipolar layer, a second base layer and a plurality of seals. The first base layer and the at least one bipolar layer are provided with one or more seals that seal the first base layer to the at least one bipolar layer without contacting the anode and/or the cathode layer.Type: ApplicationFiled: October 27, 2011Publication date: May 2, 2013Inventors: Shu Ching Quek, Chandra Sekher Yerramalli, Curtis Alan Johnson, Reza Sarrafi-Nour
-
Patent number: 8418560Abstract: A system for inspecting a wind turbine blade having a pair of shells surrounding a shear web. The system includes a scanning machine for taking images of an interior portion of the shells of the wind turbine blade, a measuring apparatus for taking numerous measurements of a defect imaged within the shells of the wind turbine blade, and a look-up table for ascertaining the theoretical strength of the wind turbine blade.Type: GrantFiled: July 28, 2011Date of Patent: April 16, 2013Assignee: General Electric CompanyInventors: Waseem Ibrahim Faidi, Del Charles Davenport, Chandra Sekher Yerramalli, Shu Ching Quek
-
Publication number: 20130084486Abstract: An electrochemical cell includes an outer housing, a separator for separating an anode material from a cathode material, wherein the separator is disposed in the outer housing. The electrochemical cell also includes a conductive thin sheet disposed around an outer circumference of the separator, wherein the conductive thin sheet is disposed such that it allows passage of the anode material between the separator and the conductive thin sheet. The electrochemical cell further includes a conductive matrix disposed between, and in contact with, the conductive thin sheet and the outer housing.Type: ApplicationFiled: September 30, 2011Publication date: April 4, 2013Inventors: Mohamed Rahmane, Chandra Sekher Yerramalli, Badri Narayan Ramamurthi, Andrey Meshkov, Richard Louis Hart, Michael Alan Vallance, David Charles Bogdan, JR.
-
Publication number: 20130082642Abstract: An electrochemical cell includes an anode connectable to a current tap and a charging medium in electrical contact with the anode. A switching device is configured to stop a charging operation of the electrochemical cell upon activation by the charging medium.Type: ApplicationFiled: September 30, 2011Publication date: April 4, 2013Inventors: Chandra Sekher Yerramalli, Badri Narayan Ramamurthi, Reza Sarrafi-Nour, Andrew Philip Shapiro, Anil Raj Duggal
-
Patent number: 8268504Abstract: A planar fuel cell stack is provided. The planar fuel cell stack comprises an anode interconnect structure comprising a corrugated first internal manifold connected to a first anode flowfield; a cathode interconnect structure comprising a corrugated second internal manifold connected to a first cathode flowfield; and a thermally active, surface insulated metallic seal disposed between the corrugated parts of the anode and cathode interconnects, such that the thermally active metallic seal responds upon the application of heat to provide sealing between the anode interconnect structure and the cathode interconnect structure.Type: GrantFiled: December 22, 2008Date of Patent: September 18, 2012Assignee: General Electric CompanyInventors: Shu Ching Quek, Andrew Philip Shapiro, Chandra Sekher Yerramalli, Michael Cheadle
-
Publication number: 20120178015Abstract: A method of processing a ceramic electrolyte suitable for use in a fuel cell is provided. The method comprises situating a ceramic electrolyte layer over an anode layer; and subjecting the ceramic electrolyte layer to a stress prior to operation of the fuel cell, by: exposing the top surface of the electrolyte layer to an oxidizing atmosphere and the bottom surface of the electrolyte layer to a reducing atmosphere; and heating the electrolyte layer. The stress causes a substantial increase in the number of microcracks, or in the average size of the microcracks, or in both the number of the microcracks and their average size. A solid oxide fuel cell comprising a ceramic electrolyte layer processed by the disclosed method is also provided.Type: ApplicationFiled: September 28, 2007Publication date: July 12, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Shu Ching Quek, Chandra Sekher Yerramalli, Todd-Michael Striker, Badri Narayan Ramamurthi, Sylvia Marie DeCarr, Venkat Subramaniam Venkataramani
-
Patent number: 8167570Abstract: A fluid turbine blade is provided. The fluid turbine blade includes a centrally disposed longitudinal spar having a substantially circumferential cross section. The fluid turbine blade also includes at least one rib assembly affixed to said longitudinal spar. The fluid turbine blade further includes a skin attached to the at least one rib.Type: GrantFiled: November 30, 2010Date of Patent: May 1, 2012Assignee: General Electric CompanyInventors: Chandra Sekher Yerramalli, Shu Ching Quek
-
Publication number: 20120033207Abstract: A system for inspecting a wind turbine blade having a pair of shells surrounding a shear web. The system includes a scanning machine for taking images of an interior portion of the shells of the wind turbine blade, a measuring apparatus for taking numerous measurements of a defect imaged within the shells of the wind turbine blade, and a look-up table for ascertaining the theoretical strength of the wind turbine blade.Type: ApplicationFiled: July 28, 2011Publication date: February 9, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Waseem Ibrahim Faidi, Del Charles Davenport, Chandra Sekher Yerramalli, Shu Ching Quek
-
Publication number: 20110236749Abstract: An energy storage device includes a housing having an interior surface defining a volume and a plurality of solid electrolyte elements disposed in the volume. Each solid electrolyte element has a first surface that defines at least a portion of a first, cathodic chamber, and a second surface that defines a second, anodic chamber. A plurality of individual anode chambers are thus provided, a majority of which are in ionic communication with the cathode chamber through a majority of the solid electrolyte elements and which are also provided with a sodium level control mechanism.Type: ApplicationFiled: March 23, 2010Publication date: September 29, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Reza Sarrafi-Nour, Andrew Shapiro, Chandra Sekher Yerramalli, Badri Narayan Ramamurthi