Patents by Inventor Shorya Awtar
Shorya Awtar 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: 7909335Abstract: A seal arrangement for sealing the space between a rotating element and a stationary element, the sealing arrangement comprising a compliant plate seal housing supported adjustably in the stationary element, the compliant plate seal housing supporting a compliant plate seal; and a spring system provided between the compliant plate seal housing and the stationary element to bias the compliant plate seal housing in a direction away from a surface of the rotating element. Alternatively, or additionally, one or more actuators may be provided to move the compliant plate seal housing in a direction away from a surface of the rotating element.Type: GrantFiled: February 4, 2008Date of Patent: March 22, 2011Assignee: General Electric CompanyInventors: Norman A. Turnquist, Frederick G. Baily, Bernard A. Couture, Jr., Jason P. Mortzheim, Sean D. Feeny, William E. Adis, Shorya Awtar, Nikhil K. Verma
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Publication number: 20100126296Abstract: A multiple degrees of freedom motion system comprising an arrangement of rigid stages, flexure constraint modules, actuators, and sensors. These components of the motion system are arranged and connected in a systematic fashion to provide a high degree of decoupling between the motion axes, suitable placement of ground-mounted actuators to actuate each motion axis, and suitable placement of sensors to allow end-point measurement along each motion axis. This arrangement of rigid stages, flexure constraint modules, actuators and sensors enables large motion range and high motion quality in the motion system, while using standard and commonly available components.Type: ApplicationFiled: November 26, 2008Publication date: May 27, 2010Inventor: Shorya Awtar
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Patent number: 7703774Abstract: A shaft seal reduces leakage between a rotating shaft such as a rotor and a stator. The shaft seal or shingle seal includes a plurality of compliant-plate members attached to the stator in facing relation. The compliant-plate members define a sealing ring between the stator and the rotating shaft. Each of the compliant-plate members includes a plurality of shingles, where adjacent compliant-plate members are disposed relative to each other such that the shingles are at least partially staggered in a direction of axial leakage.Type: GrantFiled: September 12, 2006Date of Patent: April 27, 2010Assignee: General Electric CompanyInventors: Shorya Awtar, William Edward Adis, Mark William Kowalczyk, Norman Arnold Turnquist
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Publication number: 20100078893Abstract: An active retractable seal assembly is configured for use between a rotating component and a stationary component of turbo machinery is disclosed. The seal assembly includes a seal mounted to the stationary component. The seal is movable towards and away from the rotating component between a respective closed position and an open position as a function of pressure drop across the seal. The seal includes an active seal segment, a non-active seal segment, and a fluid by-pass circuit. The fluid by-pass circuit is configured for directing fluid around the active seal segment to reduce pressure drop across the active seal segment thereby resulting in the active seal segment moving towards an open position under the action of one or more biasing devices while maintaining the non-active seal segment in a closed position.Type: ApplicationFiled: September 30, 2008Publication date: April 1, 2010Applicant: GENERAL ELECTRIC COMPANYInventors: Norman Arnold Turnquist, Shorya Awtar
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Patent number: 7651101Abstract: A shaft seal serves to reduce leakage between a rotating shaft and a static shell. The shaft seal includes a plurality of compliant plate members, each having a root and a tip. The compliant plate members are secured to the static shell at their root in facing relation. The tips of the compliant plate members define a sealing ring between the static shell and the rotating shaft. An axial flow resistance member is disposed within the compliant plate members and serves as a barrier to axial leakage flow between the compliant plate members.Type: GrantFiled: October 12, 2007Date of Patent: January 26, 2010Assignee: General Electric CompanyInventors: Shorya Awtar, Norman Arnold Turnquist
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Publication number: 20090309311Abstract: A method and seal assembly for a rotary machine including a rotary component and a stationary component is provided. The method includes providing a seal housing including a front plate and a back plate that is spaced from the front plate such that a cavity is defined between the front plate and the back plate. The method also includes coupling a plurality of flexible compliant plates to at least one of the seal housing and the stationary component such that the compliant plates are spaced from the front plate and the back plate within the cavity, and coupling at least one projection to at least one of the seal housing and the compliant plates such that the at least one projection facilitates reducing flow through at least one of a first axial gap and a second axial gap that are defined between the seal housing and the compliant plates.Type: ApplicationFiled: April 30, 2007Publication date: December 17, 2009Inventors: Nikhil Kumar Verma, Imdad Imam, Vineet Ghate, Sean Douglas Feeny, William Edward Adis, Shorya Awtar, Jason Paul Mortzheim
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Publication number: 20090304493Abstract: An axial seal arrangement is provided between a rotor and a stator. The rotor is provided with a first disk having a substantially flat sealing face surface. The stator is provided with a second annular disk surrounding the rotor, supporting proximate ends of a plurality of axially extending, flexible, compliant seal elements arranged in an annular array of plural, circumferentially-overlapping radial layers to thereby provide a tortuous path for radially outward leakage flow.Type: ApplicationFiled: June 9, 2008Publication date: December 10, 2009Applicant: General Electric CompanyInventor: Shorya Awtar
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Publication number: 20090196742Abstract: A seal arrangement for sealing the space between a rotating element and a stationary element, the sealing arrangement comprising a compliant plate seal housing supported adjustably in the stationary element, the compliant plate seal housing supporting a compliant plate seal; and a spring system provided between the compliant plate seal housing and the stationary element to bias the compliant plate seal housing in a direction away from a surface of the rotating element. Alternatively, or additionally, one or more actuators may be provided to move the compliant plate seal housing in a direction away from a surface of the rotating element.Type: ApplicationFiled: February 4, 2008Publication date: August 6, 2009Inventors: Norman A. Turnquist, Frederick G. Baily, Bernard A. Couture, JR., Jason P. Mortzheim, Sean D. Feeny, William E. Adis, Shorya Awtar, Nikhil K. Verma
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Patent number: 7549834Abstract: An actuation pressure control system effects actuation of adjustable seal segments between stationary and rotating turbomachinery members. At least one actuator is coupled with each of the adjustable seal segments and controls a position of the seal segments, respectively. A pressure system is disposed within the turbomachinery that measures or estimates ambient pressure representing an actuator back pressure acting against the actuator. A pressure regulator via a controller pressurizes the actuator to a level sufficient for a desired seal operation and controls actuator pressure based on the actuator back pressure.Type: GrantFiled: June 19, 2006Date of Patent: June 23, 2009Assignee: General Electric CompanyInventors: Darrin Glen Kirchhof, William Charles Below, Mark Edward Burnett, Frederick George Baily, Shorya Awtar, Norman Arnold Turnquist
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Publication number: 20080272553Abstract: A shaft seal serves to reduce leakage between a rotating shaft and a static shell. The shaft seal includes a plurality of compliant plate members, each having a root and a tip. The compliant plate members are secured to one of the static shell and the rotating shaft at their root in facing relation. The tips of the compliant plate members define a sealing ring between the static shell and the rotating shaft. An axial flow resistance member is disposed within the compliant plate members and serves as a harrier to axial leakage flow between the compliant plate members.Type: ApplicationFiled: June 17, 2008Publication date: November 6, 2008Applicant: General Electric CompanyInventors: Shorya Awtar, Nikhil Kumar Verma
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Patent number: 7419164Abstract: A shaft seal serves to reduce leakage between a rotating shaft and a static shell. The shaft seal includes a plurality of compliant plate members, each having a root and a tip. The compliant plate members are secured to the static shell at their root in facing relation. The tips of the compliant plate members define a sealing ring between the static shell and the rotating shaft. An axial flow resistance member is disposed within the compliant plate members and serves as a barrier to axial leakage flow between the compliant plate members.Type: GrantFiled: August 15, 2006Date of Patent: September 2, 2008Assignee: General Electric CompanyInventors: Shorya Awtar, Norman Arnold Turnquist
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Publication number: 20080169616Abstract: An active retractable seal assembly for use between rotating and non-rotating turbo machinery components including: a plurality of seal rings mounted to the non-rotating component, the seal rings movable toward and away from the rotating component between respective closed and open positions as a function of pressure drop across the seal rings, wherein the seal rings are normally in the open position; and a fluid bypass circuit for directing fluid around one or more of the plurality of seal rings to reduce the pressure drop across the one or more of the seal rings, thereby causing the one or more seal rings to move towards the open position under the action of spring(s) or actuator(s).Type: ApplicationFiled: January 11, 2007Publication date: July 17, 2008Applicant: General Electric CompanyInventors: Shorya Awtar, Timothy R. Kemp, Kurt N. Laurer, Frederick G. Baily
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Publication number: 20080169614Abstract: A shaft seal assembly between a rotating shaft and a static shell is disclosed. The shaft seal assembly includes a seal housing in mechanical contact with the static shell, at least two rigid members of the seal housing, and a plurality of compliant plate members defining a sealing ring between the static shell and the rotating shaft. The plurality of compliant plate members is disposed between the at least two rigid members and retained within the seal housing by a compressive force between the at least two rigid members.Type: ApplicationFiled: January 12, 2007Publication date: July 17, 2008Inventors: Shorya Awtar, Norman Arnold Turnquist, Jason Paul Mortzheim
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Publication number: 20080131269Abstract: A method of assembling a turbomachine that includes a rotor and a stationary component is provided. The method includes coupling a housing to the stationary component using at least one biasing member, wherein the housing extending circumferentially about the rotor. The method also includes coupling at least one annular ring to the housing, and coupling a plurality of plate members to the housing such that the at least one annular ring extends from the housing towards the rotor and partially through the plurality of plate members.Type: ApplicationFiled: February 18, 2008Publication date: June 5, 2008Inventors: Hrishikesh Vishvas Deo, Norman Arnold Turnquist, Frederick George Baily, Bernard Arthur Couture, Sean Douglas Feeny, William Edward Adis, Shorya Awtar
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Publication number: 20080107525Abstract: A shaft seal reduces leakage between a rotating shaft and a stator. The shaft seal includes a plurality of plate members attached to the stator in facing relation. The plate members define a sealing ring between the stator shell and the rotating shaft. A thickness of the plate members tapers from thick to thin from a stator end to a rotating shaft end. In this manner, with the more tightly packed tips of the plate members, axial leakage is reduced by tapering the plate members so that the plate roots are thicker than the plate tips.Type: ApplicationFiled: November 2, 2006Publication date: May 8, 2008Applicant: General Electric CompanyInventors: William Edward Adis, Norman Arnold Turnquist, Sean Douglas Feeny, Shorya Awtar, Jason P. Mortzheim
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Publication number: 20080098884Abstract: Disclosed is an actuator that includes a cylinder having an input port, a piston disposed at least partially inside of the cylinder, and one or more piston rings disposed in a circumferential piston ring groove or grooves. The actuator also includes at least one spring, inserted into the circumferential piston ring groove adjacent to the one or more piston rings and a high pressure side of said piston ring. The spring preloads the one or more piston rings to seal between a low pressure face of the one or more piston rings and a low pressure face of the circumferential piston ring groove. The invention also includes a method for moving an adjustable seal in a radial direction using the piston-ring sealed actuator. The method includes moving the adjustable seal in an axial direction, breaking a primary axial contact between the adjustable seal and a primary sealing face.Type: ApplicationFiled: October 27, 2006Publication date: May 1, 2008Inventors: Kripa Kiran Varanasi, Shorya Awtar, Frederick George Baily, Mark Edward Burnett, Farshad Ghasripoor, Imdad Imam, Norman Arnold Turnquist
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Publication number: 20080061513Abstract: A shaft seal reduces leakage between a rotating shaft such as a rotor and a stator. The shaft seal or shingle seal includes a plurality of compliant-plate members attached to the stator in facing relation. The compliant-plate members define a sealing ring between the stator and the rotating shaft. Each of the compliant-plate members includes a plurality of shingles, where adjacent compliant-plate members are disposed relative to each other such that the shingles are at least partially staggered in a direction of axial leakage.Type: ApplicationFiled: September 12, 2006Publication date: March 13, 2008Applicant: General Electric Company,Inventors: Shorya Awtar, William Edward Adis, Mark William Kowalczyk, Norman Arnold Turnquist
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Publication number: 20080042366Abstract: A shaft seal serves to reduce leakage between a rotating shaft and a static shell. The shaft seal includes a plurality of compliant plate members, each having a root and a tip. The compliant plate members are secured to the static shell at their root in facing relation. The tips of the compliant plate members define a sealing ring between the static shell and the rotating shaft. An axial flow resistance member is disposed within the compliant plate members and serves as a barrier to axial leakage flow between the compliant plate members.Type: ApplicationFiled: October 12, 2007Publication date: February 21, 2008Applicant: General Electric CompanyInventors: Shorya Awtar, Norman Turnquist
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Publication number: 20080042365Abstract: A shaft seal serves to reduce leakage between a rotating shaft and a static shell. The shaft seal includes a plurality of compliant plate members, each having a root and a tip. The compliant plate members are secured to the static shell at their root in facing relation. The tips of the compliant plate members define a sealing ring between the static shell and the rotating shaft. An axial flow resistance member is disposed within the compliant plate members and serves as a barrier to axial leakage flow between the compliant plate members.Type: ApplicationFiled: August 15, 2006Publication date: February 21, 2008Applicant: General Electric CompanyInventors: Shorya Awtar, Norman Arnold Turnquist
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Publication number: 20070295402Abstract: A gas supply and pressure control system delivers controlled pressurized gas according to an electrical command. The system includes a gas supply sub-system outputting a continuous high-pressure gas supply. A pressure control sub-system is provided in fluid communication with the gas supply sub-system and receives the continuous high-pressure gas supply. The pressure control sub-system provides a modulated pressure to a downstream volume, such as actuators for active seals in a turbomachinery environment, based on the electrical command.Type: ApplicationFiled: June 21, 2006Publication date: December 27, 2007Applicant: General Electric CompanyInventors: Shorya Awtar, David Stephen Bielawa, Mark Edward Burnett, Frederick George Baily, Norman Arnold Turnquist, Kripa Kiran Varanasi