Patents by Inventor Carl Lawrence
Carl Lawrence 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).
-
Patent number: 11162428Abstract: A method of starting a gas turbine engine is generally provided. The engine includes a rotor assembly including a compressor rotor and a turbine rotor each coupled to a shaft. The rotor assembly is coupled to a bearing assembly within a casing enabling rotation of the rotor assembly. The method includes determining, based on a lubricant parameter, a period of time within which a rotational speed of the rotor assembly is maintained within a bowed rotor mitigation speed range; rotating the rotor assembly for the period of time within the bowed rotor mitigation speed range; and accelerating the rotor assembly to the combustion speed to ignite a fuel-oxidizer mixture for combustion.Type: GrantFiled: December 18, 2017Date of Patent: November 2, 2021Assignee: General Electric CompanyInventors: Praveen Sharma, Shuvajyoti Ghosh, Narayanan Payyoor, Tod Robert Steen, Carl Lawrence MacMahon
-
Patent number: 10968794Abstract: An apparatus for transporting a turbine engine with a transportation fixture including a turbine engine jig having mounts for securing the turbine engine, a rotor with a drive shaft rotationally supported by a bearing, the method includes supplying a lubricant to the bearing and rotating the drive shaft while the turbine engine is in transport.Type: GrantFiled: December 12, 2019Date of Patent: April 6, 2021Assignee: GENERAL ELECTRIC COMPANYInventors: Carl Lawrence MacMahon, James Eugene Dingle
-
Patent number: 10947993Abstract: Embodiments are generally provided of a gas turbine engine including a rotor assembly comprising a shaft extended along a longitudinal direction, in which a compressor rotor and a turbine rotor are each coupled to the shaft; a casing surrounding the rotor assembly, in which the casing defines a first opening radially outward of the compressor rotor, the turbine rotor, or both, and a second opening radially outward of the compressor rotor, the turbine rotor, or both; a first manifold assembly coupled to the casing at the first opening; a second manifold assembly coupled to the casing at the second opening, in which the first manifold, the casing, and the second manifold together define a thermal circuit in thermal communication with the rotor assembly; and a fluid flow device in fluid communication with the first manifold assembly, in which the fluid flow device provides a flow of fluid to the first manifold assembly and through the thermal circuit, and further wherein the flow of fluid egresses the thermal ciType: GrantFiled: November 27, 2017Date of Patent: March 16, 2021Assignee: General Electric CompanyInventors: Kudum Shinde, Praveen Sharma, Shashank Suresh Puranik, Shivam Mittal, Charles Stanley Orkiszewski, Carl Lawrence MacMahon, Anthony Michael Metz, Brian Drummond
-
Publication number: 20200116054Abstract: An apparatus for transporting a turbine engine with a transportation fixture including a turbine engine jig having mounts for securing the turbine engine, a rotor with a drive shaft rotationally supported by a bearing, the method includes supplying a lubricant to the bearing and rotating the drive shaft while the turbine engine is in transport.Type: ApplicationFiled: December 12, 2019Publication date: April 16, 2020Inventors: Carl Lawrence MacMahon, James Eugene Dingle
-
Publication number: 20200072062Abstract: A system for airfoil vibration control is generally provided. The system includes an airfoil including a ferromagnetic material, and a static structure including an electromagnet adjacent to the ferromagnetic material of the airfoil. A method for controlling vibration at an airfoil of a turbo machine is further provided. The method includes placing a ferromagnetic material at the airfoil, placing an electromagnet at a static structure adjacent to the ferromagnetic material at the airfoil, and applying an electromagnetic force to the ferromagnetic material at the airfoil via the electromagnet at the static structure.Type: ApplicationFiled: August 31, 2018Publication date: March 5, 2020Inventors: Carl Lawrence MacMahon, Douglas Loren Washburn
-
Patent number: 10539053Abstract: An apparatus and method of transporting a turbine engine with a transportation fixture including a turbine engine jig having mounts for securing the turbine engine, a rotor with a drive shaft rotationally supported by a bearing, the method includes supplying a lubricant to the bearing and rotating the drive shaft while the turbine engine is in transport.Type: GrantFiled: July 6, 2017Date of Patent: January 21, 2020Assignee: General Electric CompanyInventors: Carl Lawrence MacMahon, James Eugene Dingle
-
Publication number: 20190186368Abstract: A method of starting a gas turbine engine is generally provided. The engine includes a rotor assembly including a compressor rotor and a turbine rotor each coupled to a shaft. The rotor assembly is coupled to a bearing assembly within a casing enabling rotation of the rotor assembly. The method includes determining, based on a lubricant parameter, a period of time within which a rotational speed of the rotor assembly is maintained within a bowed rotor mitigation speed range; rotating the rotor assembly for the period of time within the bowed rotor mitigation speed range; and accelerating the rotor assembly to the combustion speed to ignite a fuel-oxidizer mixture for combustion.Type: ApplicationFiled: December 18, 2017Publication date: June 20, 2019Inventors: Praveen Sharma, Shuvajyoti Ghosh, Narayanan Payyoor, Tod Robert Steen, Carl Lawrence MacMahon
-
Publication number: 20190162203Abstract: Embodiments are generally provided of a gas turbine engine including a rotor assembly comprising a shaft extended along a longitudinal direction, in which a compressor rotor and a turbine rotor are each coupled to the shaft; a casing surrounding the rotor assembly, in which the casing defines a first opening radially outward of the compressor rotor, the turbine rotor, or both, and a second opening radially outward of the compressor rotor, the turbine rotor, or both; a first manifold assembly coupled to the casing at the first opening; a second manifold assembly coupled to the casing at the second opening, in which the first manifold, the casing, and the second manifold together define a thermal circuit in thermal communication with the rotor assembly; and a fluid flow device in fluid communication with the first manifold assembly, in which the fluid flow device provides a flow of fluid to the first manifold assembly and through the thermal circuit, and further wherein the flow of fluid egresses the thermal ciType: ApplicationFiled: November 27, 2017Publication date: May 30, 2019Inventors: Kudum Shinde, Praveen Sharma, Shashank Suresh Puranik, Shivam Mittal, Charles Stanley Orkiszewski, Carl Lawrence MacMahon, Anthony Michael Metz, Brian Drummond
-
Publication number: 20190010841Abstract: An apparatus and method of transporting a turbine engine with a transportation fixture including a turbine engine jig having mounts for securing the turbine engine, a rotor with a drive shaft rotationally supported by a bearing, the method includes supplying a lubricant to the bearing and rotating the drive shaft while the turbine engine is in transport.Type: ApplicationFiled: July 6, 2017Publication date: January 10, 2019Inventors: Carl Lawrence MacMahon, James Eugene Dingle
-
Patent number: 7648789Abstract: A fuel cell gas separator (212) for use between two solid oxide fuel cells (210) and having a separator body with an anode-facing side and a cathode-facing side and with paths (234) of electrically conductive material therethrough in an electrode-contacting zone (236). In a first aspect, the electrically conductive material comprises a silver-glass composite, preferably containing 15 to 30 wt % glass. In this aspect the material of the separator body is preferably zirconia and the silver is commercially pure, a silver mixture or a silver alloy. In another aspect, the material of the separator body is zirconia, the electrically conductive material comprises silver or a silver-based material, a coating of nickel is formed on the electrode-contacting zone (236) on the anode-facing side preferably with an undercoating of Ag, and a coating of Ag—Sn alloy is formed on the electrode-contacting zone (236) on the cathode side.Type: GrantFiled: July 13, 2002Date of Patent: January 19, 2010Assignee: Ceremic Fuel Cells LimitedInventors: Pulahinga Don Dayananda Rodrigo, Sathia K Aruliah, Sudath Amarasighe, Robert Randolph Hughan, Jeremy Carl Lawrence, Jarrod David Barker
-
Patent number: 7396384Abstract: A fuel cell gas separator (14) between two planar solid oxide fuel cells (12) comprises a first layer (22) which is formed of a material that is impermeable to gases, a second layer (24) which is formed of a material that is impermeable to gases. The first and second layers have perforations (28) through their thickness which are closed by electrically conductive plug material (30). A third intermediate layer (26) between the first and second layers is electrically conductive and is in electrical contact with the plug material in the perforations through the first and second layers. The perforations in the first layer may be offset relative to the perforations in the second layer. The electrically conductive plug material in the perforations of the first and second layers may be the same, and may also be the same as the material of the third intermediate layer. The electrically conductive material may be silver or a silver-based material such as a silver-glass composite.Type: GrantFiled: February 26, 2003Date of Patent: July 8, 2008Assignee: Ceramic Fuel Cells LimitedInventors: Jarrod David Barker, Jeremy Carl Lawrence
-
Patent number: 7172828Abstract: A fuel cell system which has a high temperature fuel cell stack (1) with current diverters (5) and a reformer and/or an afterburner (6), the current diverters (5) being connected with low temperature connecting elements (10) for current delivery. The current diverters (5) are in thermal contact with the reformer and/or afterburner (6) between the high temperature fuel cell stack (1) and the low temperature connecting elements (10). The thermal contact prevents cooling of the HTFC stack 1 on its ends in the vicinity of the connecting points of the current diverters (5) and ensures effective conversion and uniform transport of the fuel.Type: GrantFiled: May 27, 2005Date of Patent: February 6, 2007Inventor: Jeremy Carl Lawrence
-
Publication number: 20060186159Abstract: A cargo carrier for use on bicycles, which affords greater security and weather protection without a loss of useful interior space. The cargo carrier is comprised of a rigid exterior having an upper shell and a lower shell, which mate in a clamshell fashion. The invention is effectively permanently mounted to a rear rack of a standard bicycle and opens toward the rear. The forward end of the cargo carrier has a hinge/pivot system which is offset rearwardly. The upper and lower shells are configured in such manner that allows the upper shell to pivot around the forward end of the lower shell as the cargo carrier is opened. The configuration reduces the room required to open the invention and allows it to operate under a portion of the bicycle seat. The invention locks to secure the cargo and has low aerodynamic drag.Type: ApplicationFiled: February 22, 2005Publication date: August 24, 2006Inventor: Carl Lawrence
-
Patent number: 6789427Abstract: A method for inspecting a component includes exciting a number of transducers forming an array to produce an ultrasonic transmission beam (beam) focused into the component. The array and the component are separated by a standoff. A number of echo signals are generated using the transducers, and the echo signals are processed in a number of channels. The processing includes both dynamical focus and providing a dynamic aperture on receive, both of which compensate for refraction of the beam at the component/standoff interface. A single-turn inspection method includes: (a) positioning the array facing the component, (b) exciting the transducers, (c) generating a number of echo signals, (d) changing the relative angular orientation of the array and the component around an axis and repeating steps (b) and (c), and (e) processing the echo signals to form at least one processed echo signal.Type: GrantFiled: September 16, 2002Date of Patent: September 14, 2004Assignee: General Electric CompanyInventors: Thomas James Batzinger, Wei Li, Robert Snee Gilmore, Edward James Nieters, William Thomas Hatfield, Richard Eugene Klaassen, James Norman Barshinger, Bruno Hans Haider, Carl Lawrence Chalek, Robert John McElligott, David Charles Franklin
-
Publication number: 20040050166Abstract: A method for inspecting a component includes exciting a number of transducers forming an array to produce an ultrasonic transmission beam (beam) focused into the component. The array and the component are separated by a standoff. A number of echo signals are generated using the transducers, and the echo signals are processed in a number of channels. The processing includes both dynamical focus and providing a dynamic aperture on receive, both of which compensate for refraction of the beam at the component/standoff interface. A single-turn inspection method includes: (a) positioning the array facing the component, (b) exciting the transducers, (c) generating a number of echo signals, (d) changing the relative angular orientation of the array and the component around an axis and repeating steps (b) and (c), and (e) processing the echo signals to form at least one processed echo signal.Type: ApplicationFiled: September 16, 2002Publication date: March 18, 2004Inventors: Thomas James Batzinger, Wei Li, Robert Snee Gilmore, Edward James Nieters, William Thomas Hatfield, Richard Eugene Klaassen, James Norman Barshinger, Bruno Hans Haider, Carl Lawrence Chalek, Robert John McElligott, David Charles Franklin
-
Patent number: 5853367Abstract: Complex equipment operated by a plurality of computerized task functions is coupled to a host processor which controls operation of a plurality of task functions performed by the equipment. Included in the equipment are a plurality of client processors, a communications network coupling the host processor to the client processors, and a plurality of programs providing respective task interfaces for running selected task functions of the equipment on any of the client processors as remote processes. Each task interface program includes a library of communications handlers and a designated task interface. When the complex equipment comprises an ultrasound imager system, the task functions of shaping a transmit waveform and shading the transducer reception parameters are performed through preferred embodiments of such task interfaces. A voice input task function may also be run as a remote process coupled to the imager host through the network interface.Type: GrantFiled: March 17, 1997Date of Patent: December 29, 1998Assignee: General Electric CompanyInventors: Carl Lawrence Chalek, William Macomber Leue, William Thomas Hatfield
-
Patent number: 5701015Abstract: An infrared illumination system for a digital camera having a taking lens, includes: a plurality of infrared emitting diodes arranged around the taking lens, each diode being contained in a can having an infrared transparent window; a first diffuser located over the windows of the cans; and a second diffuser spaced apart from the first diffusers. The first diffuser is a new type of diffuser called a Fourier transform holographic diffuser.Type: GrantFiled: August 19, 1996Date of Patent: December 23, 1997Assignee: Eastman Kodak CompanyInventors: Arnold Lungershausen, Carl Lawrence Holden
-
Patent number: 5497609Abstract: A method and apparatus for spinning fibres into yarn including providing a supply of fibres, providing a yarn-building region, opening fibres from the supply into the region, landing opened fibres in said region, removing energy from landing fibres, building and twisting the fibres landed in the region into a yarn and withdrawing the yarn from the region. The fibres may be landed leading-end first in said region. The fibre trailing-end may be flicked to remove energy from the landing fibre.Type: GrantFiled: May 16, 1995Date of Patent: March 12, 1996Assignee: British Technology Group Ltd.Inventors: Carl A. Lawrence, Rong K. Jiang
-
Patent number: 4704853Abstract: Fibres are spun into yarn by being opened close to a surface (S, SD) and directed to the surface, conveniently by suction (AS) through the surface. A yarn or yarn end (Y) is twisted over the surface to have opened fibres built onto it to be spun into a twisted yarn. The surface can be a groove (GD) of included angle less than 90.degree.. The close spacing (WS) of a means to open the fibres and the surface can be such that fibres being opened are within reach of the surface. The yarn is twisted by a twister such as a parallel-belt twister (TB1/TB2) close to but not part of the surface. Tension (T) is applied through the twister to draw off yarn.Type: GrantFiled: May 20, 1986Date of Patent: November 10, 1987Assignee: National Research Development CorporationInventor: Carl A. Lawrence
-
Patent number: 4676073Abstract: Apparatus using outdoor air as a cooling medium for an enclosed space, including a single thermostat controlling a conventional mechanical refrigeration system and electric fan means, and a temperature sensor responsive to outdoor air temperature which is adapted to energize the thermostat, rendering it operative to deactivate the refrigeration system and to activate the fan means, thereby drawing outdoor air into the enclosed space when the outdoor air temperature is below a predetermined level.Type: GrantFiled: June 5, 1986Date of Patent: June 30, 1987Inventor: Carl Lawrence