Patents by Inventor Christopher Jon Potokar
Christopher Jon Potokar 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: 11624290Abstract: An aspirating face seal between high and low pressure regions of a turbomachine at a juncture between rotatable and non-rotatable members of turbomachine includes gas bearing rotatable and non-rotatable face surfaces. Primary and starter seal teeth and optional deflector seal tooth are mounted on seal teeth carrier on rotatable member. Non-rotatable face surface is mounted on an annular slider on the non-rotatable member. A pull-off biasing means urges the annular slider away from the rotatable member and the non-rotatable face surface away from the rotatable surface. A secondary seal is in sealing engagement with the annular slider in the low pressure region and the pull-off biasing means is located radially outwardly of the annular slider in the high pressure region. Biasing means may include coil springs within spring chambers of circumferentially spaced cartridges. Tongues extend inwardly from spring chambers into grooves in slider.Type: GrantFiled: January 6, 2021Date of Patent: April 11, 2023Assignee: General Electric CompanyInventors: Nathan Evan McCurdy Gibson, Christopher Jon Potokar, Hariharan Manickavasagam Sarojini, Arnab Sen, Bikramjit Chatterjee
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Patent number: 11174752Abstract: A ceramic matrix composite (CMC) component and method of fabrication including one or more elongate functional features formed in multiple fiber plies of the CMC component. The CMC component includes a plurality of longitudinally extending ceramic matrix composite plies in a stacked configuration. Each of the one or more elongate functional features includes an inlet and an outlet to provide a flow of fluid from a fluid source to an exterior of the ceramic matrix composite component. The one or more elongate functional features are configured in multiple plies of the plurality of longitudinally extending ceramic matrix composite plies to form a plurality of cooling channels in multiple plies of the ceramic matrix composite component.Type: GrantFiled: December 20, 2019Date of Patent: November 16, 2021Assignee: General Electric CompanyInventors: Thomas Earl Dyson, Daniel Gene Dunn, Changjie Sun, Christopher Jon Potokar, Douglas Glenn Decesare
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Patent number: 11047306Abstract: A turbine engine includes: a core cowl, a core within the core cowl, the core including a compressor having a bleed port; an undercowl space; a cooling duct at least partially in the undercowl space and having an inlet and an outlet, the inlet communicating with a source of cooling air, the outlet communicating with the compressor bleed port; a valve assembly in the cooling duct; and a cooling blower operable to move air flow from the inlet of the cooling duct towards the outlet of the cooling duct and into the compressor bleed port. A method of cooling an engine having a core cowl and a compressor, combustor and turbine includes: operating the engine; shutting the engine down; after or during engine shutdown, operating a cooling blower internal to the engine cowl, to force air through the compressor by way of a compressor bleed port.Type: GrantFiled: February 25, 2020Date of Patent: June 29, 2021Assignee: General Electric CompanyInventors: Michael R. Millhaem, Byron Andrew Pritchard, Hendrik Pieter Jacobus de Bock, John Carl Glessner, Jeffrey Scott Ksander, Craig A. Gonyou, Christopher Jon Potokar
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Publication number: 20210189902Abstract: A ceramic matrix composite (CMC) component and method of fabrication including one or more elongate functional features formed in multiple fiber plies of the CMC component. The CMC component includes a plurality of longitudinally extending ceramic matrix composite plies in a stacked configuration. Each of the one or more elongate functional features includes an inlet and an outlet to provide a flow of fluid from a fluid source to an exterior of the ceramic matrix composite component. The one or more elongate functional features are configured in multiple plies of the plurality of longitudinally extending ceramic matrix composite plies to form a plurality of cooling channels in multiple plies of the ceramic matrix composite component.Type: ApplicationFiled: December 20, 2019Publication date: June 24, 2021Inventors: Thomas Earl Dyson, Daniel Gene Dunn, Changjie Sun, Christopher Jon Potokar, Douglas Glenn Decesare
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Publication number: 20210148243Abstract: An aspirating face seal between high and low pressure regions of a turbomachine at a juncture between rotatable and non-rotatable members of turbomachine includes gas bearing rotatable and non-rotatable face surfaces. Primary and starter seal teeth and optional deflector seal tooth are mounted on seal teeth carrier on rotatable member. Non-rotatable face surface is mounted on an annular slider on the non-rotatable member. A pull-off biasing means urges the annular slider away from the rotatable member and the non-rotatable face surface away from the rotatable surface. A secondary seal is in sealing engagement with the annular slider in the low pressure region and the pull-off biasing means is located radially outwardly of the annular slider in the high pressure region. Biasing means may include coil springs within spring chambers of circumferentially spaced cartridges. Tongues extend inwardly from spring chambers into grooves in slider.Type: ApplicationFiled: January 6, 2021Publication date: May 20, 2021Inventors: Nathan Evan McCurdy Gibson, Christopher Jon Potokar, Hariharan Manickavasagam Sarojini, Arnab Sen, Bikramjit Chatterjee
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Patent number: 10900369Abstract: An aspirating face seal between high and low pressure regions of a turbomachine at a juncture between rotatable and non-rotatable members of turbomachine includes gas bearing rotatable and non-rotatable face surfaces. Primary and starter seal teeth and optional deflector seal tooth are mounted on seal teeth carrier on rotatable member. Non-rotatable face surface is mounted on an annular slider on the non-rotatable member. A pull-off biasing means urges the annular slider away from the rotatable member and the non-rotatable face surface away from the rotatable surface. A secondary seal is in sealing engagement with the annular slider in the low pressure region and the pull-off biasing means is located radially outwardly of the annular slider in the high pressure region. Biasing means may include coil springs within spring chambers of circumferentially spaced cartridges. Tongues extend inwardly from spring chambers into grooves in slider.Type: GrantFiled: September 12, 2018Date of Patent: January 26, 2021Assignee: General Electric CompanyInventors: Nathan Evan McCurdy Gibson, Christopher Jon Potokar, Hariharan Manickavasagam Sarojini, Arnab Sen, Bikramjit Chatterjee
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Publication number: 20200088059Abstract: An aspirating face seal between high and low pressure regions of a turbomachine at a juncture between rotatable and non-rotatable members of turbomachine includes gas bearing rotatable and non-rotatable face surfaces. Primary and starter seal teeth and optional deflector seal tooth are mounted on seal teeth carrier on rotatable member. Non-rotatable face surface is mounted on an annular slider on the non-rotatable member. A pull-off biasing means urges the annular slider away from the rotatable member and the non-rotatable face surface away from the rotatable surface. A secondary seal is in sealing engagement with the annular slider in the low pressure region and the pull-off biasing means is located radially outwardly of the annular slider in the high pressure region. Biasing means may include coil springs within spring chambers of circumferentially spaced cartridges. Tongues extend inwardly from spring chambers into grooves in slider.Type: ApplicationFiled: September 12, 2018Publication date: March 19, 2020Inventors: Nathan Evan McCurdy GIBSON, Christopher Jon POTOKAR, Hariharan Manickavasagam SAROJINI, Arnab SEN, Bikramjit CHATTERJEE
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Patent number: 9976420Abstract: An aspirating seal assembly for use in a turbine engine is provided. The aspirating seal assembly includes a face seal and a rotary component. The face seal includes a first annular seal surface, and the rotary component includes a second annular seal surface positioned adjacent the first annular seal surface and defining a seal interface therebetween. The face seal is configured to discharge a flow of air towards the seal interface. The seal assembly also includes a first seal member extending between the first and second annular seal surfaces such that the flow of air induces a back pressure across the seal interface, and a second seal member positioned radially inward from the first seal member and extending between the first and second annular seal surfaces. A length of the second seal member is selected to increase the back pressure induced across the seal interface.Type: GrantFiled: July 23, 2015Date of Patent: May 22, 2018Assignee: GENERAL ELECTRIC COMPANYInventors: Quang Tue Nguyen Tran, Rodrigo Rodriguez Erdmenger, Christopher Jon Potokar
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Publication number: 20170022837Abstract: An aspirating seal assembly for use in a turbine engine is provided. The aspirating seal assembly includes a face seal and a rotary component. The face seal includes a first annular seal surface, and the rotary component includes a second annular seal surface positioned adjacent the first annular seal surface and defining a seal interface therebetween. The face seal is configured to discharge a flow of air towards the seal interface. The seal assembly also includes a first seal member extending between the first and second annular seal surfaces such that the flow of air induces a back pressure across the seal interface, and a second seal member positioned radially inward from the first seal member and extending between the first and second annular seal surfaces. A length of the second seal member is selected to increase the back pressure induced across the seal interface.Type: ApplicationFiled: July 23, 2015Publication date: January 26, 2017Inventors: Quang Tue Nguyen Tran, Rodrigo Rodriguez Erdmenger, Christopher Jon Potokar
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Publication number: 20130277142Abstract: Some example muffling devices may include an inner flow conditioner shaped as a generally conical frustrum and a generally cylindrical an exhaust can around the inner flow conditioner. A ratio of a downstream end wall area of the inner flow conditioner to a downstream end annular area between the downstream end wall and the exhaust can may be about 0.12 to about 0.97. A ratio of the downstream end annular area to the downstream end wall area may be proportional, by a factor of about 0.8 to about 1.9, to a ratio of an effective area of the inner flow conditioner sidewall holes to an effective area of the inner flow conditioner downstream end wall holes. A ratio of a dissipation distance between the inner flow conditioner downstream end wall and the exhaust screen to the inner flow conditioner downstream end wall hole diameter may be greater than about 10.Type: ApplicationFiled: April 23, 2012Publication date: October 24, 2013Applicant: GENERAL ELECTRIC COMPANYInventor: Christopher Jon POTOKAR
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Patent number: 8550208Abstract: Some example muffling devices may include an inner flow conditioner shaped as a generally conical frustrum and a generally cylindrical an exhaust can around the inner flow conditioner. A ratio of a downstream end wall area of the inner flow conditioner to a downstream end annular area between the downstream end wall and the exhaust can may be about 0.12 to about 0.97. A ratio of the downstream end annular area to the downstream end wall area may be proportional, by a factor of about 0.8 to about 1.9, to a ratio of an effective area of the inner flow conditioner sidewall holes to an effective area of the inner flow conditioner downstream end wall holes. A ratio of a dissipation distance between the inner flow conditioner downstream end wall and the exhaust screen to the inner flow conditioner downstream end wall hole diameter may be greater than about 10.Type: GrantFiled: April 23, 2012Date of Patent: October 8, 2013Assignee: General Electric CompanyInventor: Christopher Jon Potokar
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Patent number: 8511096Abstract: High bleed flow muffling systems are disclosed. Example muffling devices according to at least some aspects of the present disclosure may include a first orifice plate and a second orifice plate at least partially defining a plenum arranged to receive the flow of a compressible fluid. The first orifice plate and the second orifice plate may be arranged to produce cross-impinging flow such that flow through the orifices of the first orifice plate into the plenum is directed at the wall of the second orifice plate and such that flow through the orifices of the second orifice plate is directed at the wall of the first orifice plate. Some example embodiments may include an inlet flow restrictor disposed upstream of the first and second orifice plates.Type: GrantFiled: April 17, 2012Date of Patent: August 20, 2013Assignee: General Electric CompanyInventors: Christina Granger Morrissey Haugen, Kevin Samuel Klasing, Christopher Jon Potokar, Robert Proctor
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Patent number: 8307943Abstract: A system for venting a high-pressure flow stream is disclosed, the system comprising a device having a plurality of orifice plates, each orifice plate having a plurality of orifices, wherein the plurality of orifice plates are oriented relative to each other such that the pressure of the flow stream substantially drops.Type: GrantFiled: July 7, 2011Date of Patent: November 13, 2012Assignee: General Electric CompanyInventors: Kevin Samuel Klasing, Bradley Willis Fintel, John Carl Glessner, Jeffrey Lee Mason, Christopher Jon Potokar, Robert Proctor
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Publication number: 20120006615Abstract: A system for venting a high-pressure flow stream is disclosed, the system comprising a device having a plurality of orifice plates, each orifice plate having a plurality of orifices, wherein the plurality of orifice plates are oriented relative to each other such that the pressure of the flow stream substantially drops.Type: ApplicationFiled: July 7, 2011Publication date: January 12, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Kevin Samuel Klasing, Bradley Willis Fintel, John Carl Glessner, Jeffrey Lee Mason, Christopher Jon Potokar, Robert Proctor