Patents by Inventor Niraj Kumar Mishra
Niraj Kumar Mishra 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: 10408072Abstract: The present application provides a turbine nozzle including an airfoil shape. The airfoil shape may have a nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in Table I. The Cartesian coordinate values of X, Y and Z are non-dimensional values from 0% to 100% convertible to dimensional distances in inches by multiplying the Cartesian coordinate values of X, Y and Z by a height of the airfoil in inches. The X and Y values, when connected by smooth continuing arcs, define airfoil profile sections at each distance Z. The airfoil profile sections at Z distances may be joined smoothly with one another to form a complete airfoil shape.Type: GrantFiled: May 8, 2017Date of Patent: September 10, 2019Assignee: General Electric CompanyInventors: Craig Allen Bielek, Niraj Kumar Mishra
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Publication number: 20180320538Abstract: The present application provides a turbine nozzle including an airfoil shape. The airfoil shape may have a nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in Table I. The Cartesian coordinate values of X, Y and Z are non-dimensional values from 0% to 100% convertible to dimensional distances in inches by multiplying the Cartesian coordinate values of X, Y and Z by a height of the airfoil in inches. The X and Y values, when connected by smooth continuing arcs, define airfoil profile sections at each distance Z. The airfoil profile sections at Z distances may be joined smoothly with one another to form a complete airfoil shape.Type: ApplicationFiled: May 8, 2017Publication date: November 8, 2018Inventors: Craig Allen Bielek, Niraj Kumar Mishra
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Patent number: 9470096Abstract: A turbine bucket having an airfoil is disclosed. The airfoil may include a pressure side and a suction side extending between a leading edge and a trailing edge. In addition, the airfoil may include a tip. The tip may include a tip floor and a tip wall extending outwardly from the tip floor. The tip wall may include an inner surface defining an inner perimeter of the tip wall. Moreover, a plurality of notches may be defined by the inner surface around at least a portion of the inner perimeter.Type: GrantFiled: July 26, 2012Date of Patent: October 18, 2016Assignee: General Electric CompanyInventors: Niraj Kumar Mishra, Xiuzhang James Zhang, Murugesan Seerangan, Sachin Kumar Rai
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Patent number: 9464610Abstract: According to various embodiments, a system includes a gasification fuel injector. The gasification fuel injector includes a tip portion, an annular coolant chamber disposed in the tip portion, and a first structural support extending through the annular coolant chamber. The first structural support divides the annular coolant chamber into a first passage and a second passage.Type: GrantFiled: January 22, 2013Date of Patent: October 11, 2016Assignee: General Electric CompanyInventor: Niraj Kumar Mishra
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Patent number: 9458398Abstract: Biomass gasification systems including a reactor configured to gasify a dried biomass fuel in the presence of air to generate producer gas are provided. The biomass gasification systems also may include a heat exchanger adapted to transfer heat from the producer gas to a biomass feedstock to produce the dried biomass fuel and cooled producer gas.Type: GrantFiled: August 22, 2011Date of Patent: October 4, 2016Assignee: General Electric CompanyInventor: Niraj Kumar Mishra
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Patent number: 9079199Abstract: According to various embodiments, a system includes a gasification fuel injector. The gasification fuel injector includes a fuel conduit configured to inject the fuel, the first oxygen conduit configured to inject oxygen, a second oxygen conduit configured to inject oxygen, and a cooling gas conduit configured to flow a cooling gas. The cooling gas is flame resistant.Type: GrantFiled: June 14, 2010Date of Patent: July 14, 2015Assignee: General Electric CompanyInventor: Niraj Kumar Mishra
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Patent number: 9045988Abstract: A turbine bucket having an airfoil is disclosed. The airfoil may include a pressure side wall and a suction side wall extending between a leading edge and a trailing edge. In addition, the airfoil may include a base and a tip disposed opposite the base. The tip may include a tip floor and pressure and suction side tip walls extending outwardly from the tip floor. Moreover, the tip may include an intermediate tip wall extending outwardly from the tip floor between the pressure and suction side tip walls. The intermediate tip wall may define a height that is less than a height of the pressure and/or suction side tip walls.Type: GrantFiled: July 26, 2012Date of Patent: June 2, 2015Assignee: General Electric CompanyInventors: Niraj Kumar Mishra, Xiuzhang James Zhang
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Publication number: 20140361499Abstract: A high-temperature seal for use in sealing gaps between adjacent turbine components includes a seal body constructed of a shape-memory alloy having inoperative size and shape that, in use, expands to an operative size and shape where it is in sealing engagement with the adjacent turbine component upon reaching a predetermined transition temperature. Upon subsequent cooling to a temperature below the predetermined temperature, the seal body reverts to the first inoperative shape or to another inoperative size and shape.Type: ApplicationFiled: June 11, 2013Publication date: December 11, 2014Inventors: Sukriti GUPTA, Niraj Kumar MISHRA
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Publication number: 20140030102Abstract: A turbine bucket having an airfoil is disclosed. The airfoil may include a pressure side and a suction side extending between a leading edge and a trailing edge. In addition, the airfoil may include a tip. The tip may include a tip floor and a tip wall extending outwardly from the tip floor. The tip wall may include an inner surface defining an inner perimeter of the tip wall. Moreover, a plurality of notches may be defined by the inner surface around at least a portion of the inner perimeter.Type: ApplicationFiled: July 26, 2012Publication date: January 30, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Niraj Kumar Mishra, Xiuzhang James Zhang, Murugesan Seerangan, Sachin Kumar Rai
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Publication number: 20140030101Abstract: A turbine bucket having an airfoil is disclosed. The airfoil may include a pressure side wall and a suction side wall extending between a leading edge and a trailing edge. In addition, the airfoil may include a base and a tip disposed opposite the base. The tip may include a tip floor and pressure and suction side tip walls extending outwardly from the tip floor. Moreover, the tip may include an intermediate tip wall extending outwardly from the tip floor between the pressure and suction side tip walls. The intermediate tip wall may define a height that is less than a height of the pressure and/or suction side tip walls.Type: ApplicationFiled: July 26, 2012Publication date: January 30, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Niraj Kumar Mishra, Xiuzhang James Zhang
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Publication number: 20130047573Abstract: Biomass gasification systems including a reactor configured to gasify a dried biomass fuel in the presence of air to generate producer gas are provided. The biomass gasification systems also may include a heat exchanger adapted to transfer heat from the producer gas to a biomass feedstock to produce the dried biomass fuel and cooled producer gas.Type: ApplicationFiled: August 22, 2011Publication date: February 28, 2013Applicant: General Electric CompanyInventor: Niraj Kumar Mishra
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Patent number: 8360342Abstract: According to various embodiments, a system includes a gasification fuel injector. The gasification fuel injector includes a tip portion, an annular coolant chamber disposed in the tip portion, and a first structural support extending through the annular coolant chamber. The first structural support divides the annular coolant chamber into a first passage and a second passage.Type: GrantFiled: April 30, 2010Date of Patent: January 29, 2013Assignee: General Electric CompanyInventor: Niraj Kumar Mishra
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Publication number: 20110303758Abstract: According to various embodiments, a system includes a gasification fuel injector. The gasification fuel injector includes a fuel conduit configured to inject the fuel, the first oxygen conduit configured to inject oxygen, a second oxygen conduit configured to inject oxygen, and a cooling gas conduit configured to flow a cooling gas. The cooling gas is flame resistant.Type: ApplicationFiled: June 14, 2010Publication date: December 15, 2011Applicant: GENERAL ELECTRIC COMPANYInventor: Niraj Kumar Mishra
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Publication number: 20110266364Abstract: According to various embodiments, a system includes a gasification fuel injector. The gasification fuel injector includes a tip portion, an annular coolant chamber disposed in the tip portion, and a first structural support extending through the annular coolant chamber. The first structural support divides the annular coolant chamber into a first passage and a second passage.Type: ApplicationFiled: April 30, 2010Publication date: November 3, 2011Applicant: GENERAL ELECTRIC COMPANYInventor: Niraj Kumar Mishra