Patents by Inventor Rajnikumar Nandalal Suthar
Rajnikumar Nandalal Suthar 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: 8721289Abstract: A cover of an airfoil having opposing pressure and suction sides of a rotatable turbine stage to prevent fluid from crossover-flowing from a pressure side of a leading airfoil to a suction side of a trailing airfoil is provided. The cover includes pressure and suction side edge portions, one of which having a shape that is discontinuous relative to that of a complementary one of suction and pressure side edge portions of an aft cover of a corresponding one of a trailing and a leading airfoil, respectively.Type: GrantFiled: October 30, 2009Date of Patent: May 13, 2014Assignee: General Electric CompanyInventors: Joshy John, Rajnikumar Nandalal Suthar, Rajaguru Nathan Krishnasamy
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Patent number: 8608424Abstract: A turbomachine includes a housing having an inner surface, a compressor, a turbine and a rotary member including a plurality of blade members configured as part of one of the compressor and the turbine. Each of the plurality of blade members includes a base portion and a tip portion. The turbomachine also includes a honeycomb seal member mounted to the inner surface of the housing adjacent the rotary member. The honeycomb seal member includes a contoured surface having formed therein a deformation zone. The deformation zone includes an inlet zone and an outlet zone. The inlet zone is spaced a first distance from the tip portion of each of the plurality of blade members and the outlet zone is spaced a second distance from the tip portion of each of the plurality of blade members. The second distance being substantially equal to or less than the first distance.Type: GrantFiled: October 9, 2009Date of Patent: December 17, 2013Assignee: General Electric CompanyInventors: Sanjeev Kumar Jain, Joshy John, Sachin Kumar Rai, Rajnikumar Nandalal Suthar
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Patent number: 8444372Abstract: A turbomachine includes a housing having an outer surface and an inner surface that defines an interior portion. The housing includes a fluid plenum. A rotating member is arranged within the housing. The rotating member includes at least one bucket having a base portion and a tip portion. A stationary member is mounted to the inner surface of the housing adjacent the tip portion of the at least one bucket. At least one fluid passage passes through at least a portion of the stationary member. The at least one fluid passage includes a fluid inlet fluidly coupled to the fluid plenum and a fluid outlet exposed to the interior portion. The fluid outlet being configured and disposed to direct a flow of fluid toward the tip portion of the at least one bucket.Type: GrantFiled: February 7, 2011Date of Patent: May 21, 2013Assignee: General Electric CompanyInventors: Rajnikumar Nandalal Suthar, Sanjeev Kumar Jain, Joshy John
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Patent number: 8444371Abstract: A seal system between a row of buckets supported on a machine rotor and a surrounding stationary casing or stator includes a tip shroud secured at radially outer tips of each of the buckets, the tip shroud formed with a radially-projecting rail. A cellular seal structure is supported in the stationary stator in radial opposition to the tip shroud and the rail. The seal structure has an annular array of individual cells formed to provide continuous, substantially horizontal flow passages devoid of any radial obstruction along substantially an entire axial length dimension of the cellular seal structure to prevent flow about the tip shroud from turning radially inwardly.Type: GrantFiled: April 9, 2010Date of Patent: May 21, 2013Assignee: General Electric CompanyInventors: Joshy John, Sanjeev Kumar Jain, Rajnikumar Nandalal Suthar
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Publication number: 20120201650Abstract: A turbomachine includes a housing having an outer surface and an inner surface that defines an interior portion. The housing includes a fluid plenum. A rotating member is arranged within the housing. The rotating member includes at least one bucket having a base portion and a tip portion. A stationary member is mounted to the inner surface of the housing adjacent the tip portion of the at least one bucket. At least one fluid passage passes through at least a portion of the stationary member. The at least one fluid passage includes a fluid inlet fluidly coupled to the fluid plenum and a fluid outlet exposed to the interior portion. The fluid outlet being configured and disposed to direct a flow of fluid toward the tip portion of the at least one bucket.Type: ApplicationFiled: February 7, 2011Publication date: August 9, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Rajnikumar Nandalal Suthar, Sanjeev Kumar Jain, Joshy John
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Publication number: 20120195742Abstract: A turbine bucket for use with a turbine engine. The turbine bucket includes a dovetail that is coupled to a rotor assembly that is positioned within a turbine casing. A platform extends from the dovetail. An airfoil extends from the platform. The airfoil includes a root end and a tip end. The tip end extends outwardly from the root end towards the turbine casing. A tip shroud extends from the tip end. The tip shroud includes a shroud plate. A first shroud rail extending a first radial distance from the shroud plate towards the turbine casing. A second shroud rail extends a second radial distance from the shroud plate towards the turbine casing that is different than the first radial distance.Type: ApplicationFiled: January 28, 2011Publication date: August 2, 2012Inventors: Sanjeev Kumar Jain, Rajnikumar Nandalal Suthar, Matthew Durham Collier
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Publication number: 20110248452Abstract: A seal system between a row of buckets supported on a machine rotor and a surrounding stationary casing or stator includes a tip shroud secured at radially outer tips of each of the buckets, the tip shroud formed with a radially-projecting rail. A cellular seal structure is supported in the stationary stator in radial opposition to the tip shroud and the rail. The seal structure has an annular array of individual cells formed to provide continuous, substantially horizontal flow passages devoid of any radial obstruction along substantially an entire axial length dimension of the cellular seal structure to prevent flow about the tip shroud from turning radially inwardly.Type: ApplicationFiled: April 9, 2010Publication date: October 13, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Joshy JOHN, Sanjeev Kumar JAIN, Rajnikumar Nandalal SUTHAR
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Publication number: 20110103966Abstract: A cover of an airfoil having opposing pressure and suction sides of a rotatable turbine stage to prevent fluid from crossover-flowing from a pressure side of a leading airfoil to a suction side of a trailing airfoil is provided. The cover includes pressure and suction side edge portions, one of which having a shape that is discontinuous relative to that of a complementary one of suction and pressure side edge portions of an aft cover of a corresponding one of a trailing and a leading airfoil, respectively.Type: ApplicationFiled: October 30, 2009Publication date: May 5, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Joshy John, Rajnikumar Nandalal Suthar, Rajaguru Nathan Krishnasamy
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Publication number: 20110085893Abstract: A turbomachine includes a housing having an inner surface, a compressor, a turbine and a rotary member including a plurality of blade members configured as part of one of the compressor and the turbine. Each of the plurality of blade members includes a base portion and a tip portion. The turbomachine also includes a honeycomb seal member mounted to the inner surface of the housing adjacent the rotary member. The honeycomb seal member includes a contoured surface having formed therein a deformation zone. The deformation zone includes an inlet zone and an outlet zone. The inlet zone is spaced a first distance from the tip portion of each of the plurality of blade members and the outlet zone is spaced a second distance from the tip portion of each of the plurality of blade members. The second distance being substantially equal to or less than the first distance.Type: ApplicationFiled: October 9, 2009Publication date: April 14, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Sanjeev Kumar Jain, Joshy John, Sachin Kumar Rai, Rajnikumar Nandalal Suthar