Patents by Inventor Charles A. Lewis
Charles A. Lewis 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: 10675427Abstract: A nasal cannula including a base portion defining a gas passageway and one or more nozzles defining a second gas passageway in gaseous communication with the first gas passageway for directing a therapeutic flow of gas to a user's nares, that may further include one or more sensors for measuring the properties of gas within a user's nares. The one or more nozzles may be a nasal insert that includes recesses or grooves that prevent sealing of the nozzle with the nare. The nozzle may be shaped to avoid insertion into the user's nares, thus preventing sealing with the nares. A stop may be positioned between two nozzles to engage a user's columella and prevent the nozzles from inserting into the user's nares. Elongate extensions are provided for inserting into the user's nares and supporting sensors for measuring gas properties therein.Type: GrantFiled: April 30, 2014Date of Patent: June 9, 2020Inventors: Robert M. Landis, Charles A. Lewis, Louis Javier Collazo
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Publication number: 20200127672Abstract: An example frequency converter includes a drift canceling loop with a balanced delay and a linear signal path (e.g., linear with respect to frequency scaling, amplitude modulation, and/or phase modulation). One side of the drift canceling loop includes a fixed delay, and the opposite side includes an adjustable, complementary delay. The adjustable, complementary delay facilitates precision matching of the signal delays on each side of the loop over a range of frequencies, which results in a significant improvement in noise cancelation, particularly at large offsets to the carrier, while permitting the use of a higher noise, but very fast tuning course scale oscillator. The linear signal path from the signal generator to an RF output facilitates modulation of the signal by the signal generator. A modular format is an advantageous embodiment of the invention that includes the removal of the frequency synthesizer's low phase noise reference into a separate module.Type: ApplicationFiled: December 23, 2019Publication date: April 23, 2020Applicant: Giga-tronics IncorporatedInventors: John R. Regazzi, Charles Lewis, Carlos Fuentes
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Publication number: 20200103114Abstract: A combustor cap assembly includes a cap plate and a cover panel. The cap plate defines an outer perimeter and fuel nozzle openings disposed through the cap plate. The cap plate has a hot side, and the cover panel has a cold side, which is attached to the hot side of the cap plate. The hot side of the cap plate and/or the cold side of the cover panel define a plurality of cooling microchannels extending in a transverse direction relative to a centerline of the combustor cap assembly. A first microchannel has a first channel outlet disposed along the outer perimeter of the cap plate, and/or a second microchannel has a second channel outlet disposed within one of the plurality of fuel nozzle openings. The cover panel may be coated with a bond coat and a thermal barrier coating.Type: ApplicationFiled: September 28, 2018Publication date: April 2, 2020Applicant: General Electric CompanyInventors: Scott Robert Simmons, Charles Lewis Davis, III
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Patent number: 10577957Abstract: An aft frame assembly for a gas turbine transition piece has a main body with an upstream facing surface and downstream facing surface. Feed hole inlets are located on the upstream facing surface, and each feed hole inlet is coupled to a cooling channel that passes through the main body towards the downstream facing surface. Plenums are located in or near the downstream facing surface. Each cooling channel is connected to and terminates in a plenum. Microchannels are formed in or near the downstream facing surface, and each microchannel is connected to a plenum. The cooling channels are configured as inputs and the microchannels are configured as outputs of the plenums. Two or more of the cooling channels and two or more of the microchannels are connected to one plenum. Exit channels are connected to the microchannels, and exhaust flow out of an upstream facing surface of a seal slot.Type: GrantFiled: October 13, 2017Date of Patent: March 3, 2020Assignee: General Electric CompanyInventors: Charles Lewis Davis, III, David Kenton Felling
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Patent number: 10560110Abstract: An example frequency converter includes a drift canceling loop with a balanced delay and a linear signal path (e.g., linear with respect to frequency scaling, amplitude modulation, and/or phase modulation). One side of the drift canceling loop includes a fixed delay, and the opposite side includes an adjustable, complementary delay. The adjustable, complementary delay facilitates precision matching of the signal delays on each side of the loop over a range of frequencies, which results in a significant improvement in noise cancelation, particularly at large offsets to the carrier, while permitting the use of a higher noise, but very fast tuning course scale oscillator. The linear signal path from the signal generator to an RF output facilitates modulation of the signal by the signal generator. A modular format is an advantageous embodiment of the invention that includes the removal of the frequency synthesizer's low phase noise reference into a separate module.Type: GrantFiled: June 28, 2017Date of Patent: February 11, 2020Assignee: Giga-tronics IncorporatedInventors: John R. Regazzi, Charles Lewis, Carlos Fuentes
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Patent number: 10525221Abstract: Embodiments of the present invention provide a device, system and method for providing high flow therapy interfaces for use in the treatment of respiratory conditions and in assisted respirations. A nasal cannula for delivery of respiratory gases includes at least one nasal insert and at least one flange coupled to the at least one nasal insert where the at least one flange extends in a radial direction from the at least one nasal insert is provided. In another aspect of the embodiment, the at least one flange is adapted to fit within the nostril of a patient. In another aspect of the embodiment, the at least one flange is a lobulated flange.Type: GrantFiled: June 17, 2016Date of Patent: January 7, 2020Inventors: Robert M Landis, Charles A Lewis, Louis Javier Collazo
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Patent number: 10429073Abstract: A combustor cap module is provided with a retention system to facilitate assembly and disassembly. The combustor cap module further includes a cap face assembly having a cooling plate; a cylindrical sleeve including a connecting surface for attaching the cap face assembly to the retention assembly; and a coupling member mounted in a downstream fuel nozzle opening in the cooling plate. The retention system includes a support plate having an inner panel that defines an upstream fuel nozzle opening. The coupling member extends through the upstream fuel nozzle opening, such that its upstream end extends upstream of the support plate. A retaining ring at least partially encircles the upstream end of the coupling member and is engaged by a spring plate that is removably secured to the support plate at multiple locations. A method for assembling a combustor cap module is also provided.Type: GrantFiled: November 22, 2016Date of Patent: October 1, 2019Assignee: General Electric CompanyInventors: Charles Lewis Davis, III, Scott Robert Simmons, David Kenton Felling
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Publication number: 20190112936Abstract: An aft frame assembly has a main body with an upstream facing surface, a downstream facing surface, a radially outer facing surface and a radially inner facing surface. Feed hole inlets are located on the upstream facing surface and radially outward of the outer sleeve so that the feed hole inlets are located to receive input from a high pressure plenum. The feed hole inlets are coupled to cooling channels that pass through the main body. Microchannels are formed in or near the radially inner facing surface and the downstream facing surface. The cooling channels are connected to and terminate in the microchannels. Exit holes are connected to the plurality of microchannels, and the exit holes are located radially outward of the transition piece and radially inward of the outer sleeve. The exit holes are located to exhaust into the cooling annulus.Type: ApplicationFiled: October 13, 2017Publication date: April 18, 2019Applicant: General Electric CompanyInventors: Charles Lewis Davis, III, Kevin Weston McMahan, Wei Chen, Scott Robert Simmons
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Publication number: 20190113230Abstract: An aft frame assembly for a gas turbine transition piece has a main body with an upstream facing surface, a downstream facing surface, a radially outer facing surface and a radially inner facing surface. A plurality of feed hole inlets are located on the upstream facing surface. Each of the feed hole inlets are coupled to one of a plurality of cooling channels passing through the main body towards the radially inner facing surface. A plurality of microchannels are formed near the radially inner facing surface and extend at least partially along the downstream facing surface. The cooling channels are connected to and terminate in the microchannels. A pre-sintered preform is located on the radially inner facing surface of the main body.Type: ApplicationFiled: October 13, 2017Publication date: April 18, 2019Applicant: General Electric CompanyInventors: Scott Robert Simmons, Ronald James Chila, Kevin Weston McMahan, Wei Chen, Charles Lewis Davis, III
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Publication number: 20190112937Abstract: An aft frame assembly for a gas turbine transition piece has a main body with an upstream facing surface and downstream facing surface. Feed hole inlets are located on the upstream facing surface, and each feed hole inlet is coupled to a cooling channel that passes through the main body towards the downstream facing surface. Plenums are located in or near the downstream facing surface. Each cooling channel is connected to and terminates in a plenum. Microchannels are formed in or near the downstream facing surface, and each microchannel is connected to a plenum. The cooling channels are configured as inputs and the microchannels are configured as outputs of the plenums. Two or more of the cooling channels and two or more of the microchannels are connected to one plenum. Exit channels are connected to the microchannels, and exhaust flow out of an upstream facing surface of a seal slot.Type: ApplicationFiled: October 13, 2017Publication date: April 18, 2019Applicant: General Electric CompanyInventors: Charles Lewis Davis, III, David Kenton Felling
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Publication number: 20190112943Abstract: An aft frame assembly for a gas turbine transition piece includes a main body having an upstream facing surface and a downstream facing surface. A plurality of feed hole inlets are located on the upstream facing surface. The feed hole inlets are coupled to a plurality of cooling channels that pass through the main body towards the downstream facing surface. A plurality of plenums are located in or near the downstream facing surface, and each cooling channel is connected to and terminates in one of the plenums. The cooling channels are inputs to the plenums. A plurality of microchannel cooling slots are formed in or near the downstream facing surface, and each microchannel cooling slot is connected to one of the plenums. The microchannel cooling slots are outputs of the plenums. Two or more cooling channels and two or more microchannel cooling slots are connected to one of the plenums.Type: ApplicationFiled: October 13, 2017Publication date: April 18, 2019Applicant: General Electric CompanyInventors: Charles Lewis Davis, III, Kevin Weston McMahan, Wei Chen, Scott Robert Simmons
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Publication number: 20180326254Abstract: An exercise foam roller having a plurality of elongated tube sectors where each sector has first and second longitudinal edges with at least a portion of the outer surface covered with foam and hinges interconnecting the tube sectors along their first longitudinal edges and fasteners detachably interconnecting the tube sectors along their second longitudinal edges.Type: ApplicationFiled: May 15, 2017Publication date: November 15, 2018Inventors: DeLovell Earls, Andrew Smith, Charles Lewis
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Publication number: 20180078723Abstract: An apparatus, system, and method for managing respiratory secretions and fluids in sections of artificial airways. A secretion removal assembly configured to connect to a respiratory secretion retention device, the respiratory secretion retention device adapted to fluidly connect to an artificial airway, the secretion removal assembly including a connector adapted to connect to a port of the respiratory secretion retention device; and a bag in fluid communication with the connector can be provided. In another aspect of this embodiment, the bag is adapted to collect the secretions that emit from the port of the respiratory secretion retention device. In yet another aspect of this embodiment, the secretion removal assembly further can include a tube having a first end and a second end opposite the first end, the first end in fluid communication with the connector and the second end in fluid communication with the bag.Type: ApplicationFiled: November 25, 2013Publication date: March 22, 2018Applicant: Mergenet Medical, Inc.Inventors: Angelo R. Caruso, Charles A. Lewis, Louis Javier Collazo, Robert M. Landis
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Patent number: 9878119Abstract: Embodiments of the present invention provide a device, system and method for providing a connector configured for connecting to an artificial airway for use in the treatment of respiratory conditions and in assisted respirations. In an embodiment of the invention, a connector configured for connecting to an artificial airway is provided. The connector configured for connecting to an artificial airway can include an inlet conduit configured to receive supplied respiratory gas, an outlet conduit configured to allow exhaled gas to exit to ambient during use, an artificial airway side conduit configured to couple to an artificial airway and a restrictor coupled with the outlet conduit. The restrictor coupled with the outlet conduit can be an outflow variable restrictor. The connector further can include a reducer coupled with the outlet conduit.Type: GrantFiled: July 10, 2012Date of Patent: January 30, 2018Assignee: Mergenet Medical, Inc.Inventors: Robert M. Landis, Charles A. Lewis
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Publication number: 20170304570Abstract: A high flow therapy system for delivering heated and humidified respiratory gas to an airway of a patient, the system including a respiratory gas flow pathway for delivering the respiratory gas to the airway of the patient by way of a non-sealing respiratory interface; wherein flow rate of the pressurized respiratory gas is controlled by a microprocessor.Type: ApplicationFiled: April 21, 2016Publication date: October 26, 2017Inventors: Robert M. Landis, Charles A. Lewis, Louis Javier Collazo, Chris Agami
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Patent number: 9696037Abstract: The present application provides a combustor for use with a gas turbine engine. The combustor may include a liner and a flow sleeve surrounding the liner with the liner and the flow sleeve defining a flow path therebetween. A liner retaining feature extends into the flow path to retain the liner within the flow sleeve. The liner retaining feature may include a bolt therein.Type: GrantFiled: October 16, 2014Date of Patent: July 4, 2017Assignee: General Electric CompanyInventors: Kyle Lee Kidder, Charles Lewis Davis, III, Steven Bataille
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Publication number: 20170176016Abstract: A combustor cap module is provided with a retention system to facilitate assembly and disassembly. The combustor cap module further includes a cap face assembly having a cooling plate; a cylindrical sleeve including a connecting surface for attaching the cap face assembly to the retention assembly; and a coupling member mounted in a downstream fuel nozzle opening in the cooling plate. The retention system includes a support plate having an inner panel that defines an upstream fuel nozzle opening. The coupling member extends through the upstream fuel nozzle opening, such that its upstream end extends upstream of the support plate. A retaining ring at least partially encircles the upstream end of the coupling member and is engaged by a spring plate that is removably secured to the support plate at multiple locations. A method for assembling a combustor cap module is also provided.Type: ApplicationFiled: November 22, 2016Publication date: June 22, 2017Applicant: General Electric CompanyInventors: Charles Lewis Davis, III, Scott Robert Simmons, David Kenton Felling
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Publication number: 20160367779Abstract: A high flow therapy system for delivering heated and humidified respiratory gas to an airway of a patient, the system including a respiratory gas flow pathway for delivering the respiratory gas to the airway of the patient by way of a non-sealing respiratory interface; wherein flow rate of the pressurized respiratory gas is controlled by a microprocessor.Type: ApplicationFiled: April 21, 2016Publication date: December 22, 2016Inventors: Robert M Landis, Charles A Lewis, Louis Javier Collazo, Chris Agami
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Publication number: 20160367776Abstract: A high flow therapy system for delivering heated and humidified respiratory gas to an airway of a patient includes a respiratory gas flow pathway for delivering the respiratory gas to the airway of the patient by way of a non-sealing respiratory interface; wherein flow rate of the respiratory gas is controlled by a microprocessor, a mixing area for mixing a first gas and a second gas in the respiratory gas flow pathway, a humidification area downstream of the mixing area and configured for humidifying respiratory gas in the respiratory gas flow pathway, and a heated delivery conduit for minimizing condensation of humidified respiratory gas.Type: ApplicationFiled: August 29, 2016Publication date: December 22, 2016Inventors: Robert M. Landis, Charles A. Lewis, Louis Javier Collazo
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Publication number: 20160312630Abstract: A nozzle assembly includes a first nozzle cavity, a second nozzle cavity, a rib positioned between the nozzle cavities, a rib cap positioned on the rib, a first cavity insert, and a second cavity insert. The rib cap is wider than the rib, such that the rib cap extends outwardly into those portions of the nozzle cavities immediately adjacent the rib. The first cavity insert and the second cavity insert include a longitudinal surface offset from the rib. The offset surfaces include rib cap-interface surfaces that are joined to the rib cap. A method of modifying the nozzle assembly is achieved by installing a rib cap having a width greater than that of the rib and by installing modified cavity inserts having a surface offset from the rib, and by joining rib cap-interface surfaces of the modified cavity inserts to the rib cap.Type: ApplicationFiled: July 6, 2016Publication date: October 27, 2016Applicant: General Electric CompanyInventors: Charles Lewis Davis, III, Frederick James Brunner