Patents by Inventor Matthew J. Howlett
Matthew J. Howlett 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).
-
Publication number: 20240154612Abstract: The application relates to voltage supply in switched-mode driver integrated circuit (IC). The IC has an output bridge with first and second circuit branches, where each of the circuit branches has an output node (102a, 102b) connected between first and second transistor switches (103a, 104a; 103b, 104b) for selectively connecting the output node to respective first and second voltages (VH, VL). There are discrete first and second IC die contacts (208a, 208b) for receiving the first voltage, and the first and second circuit branches are connected to the first and second IC die contacts respectively. Ancillary circuitry (105) is configured to receive a supply voltage from a voltage supply node voltage which is connected to the first and second IC die contacts via respective first and second respectively matched resistances.Type: ApplicationFiled: October 10, 2023Publication date: May 9, 2024Applicant: Cirrus Logic International Semiconductor Ltd.Inventors: Kapil SHARMA, Andrew J. HOWLETT, Matthew PETHERBRIDGE, John B. BOWLERWELL, Graeme S. ANGUS, Gordon RUSSELL
-
Publication number: 20220316352Abstract: Gas turbine engines are described. The engines include high and low pressure turbine systems, a mid-turbine frame system arranged axially between the high and low pressure turbine systems, and a cooling air conduit fluidly connected to the mid-turbine frame system. A flow diverter assembly is installed between the cooling air conduit and the mid-turbine frame system. The flow diverter assembly includes a mounting plate to mount to the mid-turbine frame system, a manifold defining a manifold cavity on a first side of the mounting plate, a conduit connector for connecting to the cooling air conduit, and a diverter body extending from a second side of the mounting plate opposite the manifold. The diverter body has a solid base and a plurality of apertures arranged about a circumference thereof. The manifold cavity is fluidly connected to an interior of the diverter body through an aperture formed in the mounting plate.Type: ApplicationFiled: March 31, 2021Publication date: October 6, 2022Inventors: Murat Yazici, Matthew J. Howlett
-
Patent number: 10393302Abstract: A flange fitting for attaching to double wall tubes includes a fitting center port, a plurality of fitting mounts, inner and outer seal surfaces, fluid communication ports, and a connections surface. The fitting center port extends through the fitting for passing a primary fluid flow. The fitting mounts are spaced radially away from the center port for receiving fasteners. The inner and outer seal surfaces are predominantly flat. The fluid communication ports for pass a secondary fluid flow and fluid communication ports extend through the fitting from between the inner and outer seal surfaces to the connection surface between the inner sleeve connection and the outer connection. The connection surface is on a side of the fitting opposing the seal surfaces. The connection surface includes an inner sleeve connection and an outer connection.Type: GrantFiled: February 11, 2015Date of Patent: August 27, 2019Assignee: United Technologies CorporationInventors: Steven Dill, David E. Diaz, Matthew J. Howlett
-
Publication number: 20190120140Abstract: A gas turbine engine includes a bearing compartment that has at least one seal, a bearing disposed in the bearing compartment, a deoiler fluidly connected with the bearing compartment, and a vacuum generator fluidly connected with the deoiler.Type: ApplicationFiled: October 24, 2017Publication date: April 25, 2019Inventors: Jorn A. Glahn, Matthew J. Howlett, Myles R. Kelly, Victor M. Pinedo, Gregory E. Reinhardt, Bradley C. Schafer, Ethan K. Stearns
-
Patent number: 10054057Abstract: A drainage assembly (68) includes a first segment (70A) with a first inner tube (76A) defining a first inner tube passage (78A), a first outer tube (72A) concentrically disposed around the first inner tube (76A) and defining a first outer tube passage (74A), and a first fitting (80A) disposed on an end of the first segment (70A). The first fitting (80A) has a first inner passage (82A) in fluid communication with the first inner tube passage (78A) and a first outer passage (84A) in fluid communication with the first outer tube passage (74A). A plate (88) is positioned adjacent the first fitting (80A). The plate (88) has a second inner passage (90) in fluid communication with the first inner passage (82A) on one side, and a second outer passage (92) in fluid communication with the first outer passage (84A) on the one side. Also included is a drainage line (104) in fluid communication with the first outer tube passage (74A).Type: GrantFiled: February 11, 2015Date of Patent: August 21, 2018Assignee: United Technologies CorporationInventors: Brittany Zabinski, Steven Dill, Matthew J. Howlett, Gregory S. Sheiferstein
-
Patent number: 9874147Abstract: A V-band clamp includes a V-band segment that has a V-groove and is configured to generally circumscribe a flange of a first component and a flange of a second component. The V-band segment has a coupling element that is configured to couple the V-band clamp to a third component. The V-band clamp also has a latch disposed on the V-band segment that is configured to tighten the V-band clamp about the flanges.Type: GrantFiled: January 20, 2015Date of Patent: January 23, 2018Assignee: United Technologies CorporationInventors: Nathan Snape, Matthew J. Howlett, Steven Dill
-
Publication number: 20170198639Abstract: A drainage assembly (68) includes a first segment (70A) with a first inner tube (76A) defining a first inner tube passage (78A), a first outer tube (72A) concentrically disposed around the first inner tube (76A) and defining a first outer tube passage (74A), and a first fitting (80A) disposed on an end of the first segment (70A). The first fitting (80A) has a first inner passage (82A) in fluid communication with the first inner tube passage (78A) and a first outer passage (84A) in fluid communication with the first outer tube passage (74A). A plate (88) is positioned adjacent the first fitting (80A). The plate (88) has a second inner passage (90) in fluid communication with the first inner passage (82A) on one side, and a second outer passage (92) in fluid communication with the first outer passage (84A) on the one side. Also included is a drainage line (104) in fluid communication with the first outer tube passage (74A).Type: ApplicationFiled: February 11, 2015Publication date: July 13, 2017Inventors: Brittany Zabinski, Steven Dill, Matthew J. Howlett, Gregory S. Sheiferstein
-
Publication number: 20160208706Abstract: A V-band clamp includes a V-band segment that has a V-groove and is configured to generally circumscribe a flange of a first component and a flange of a second component. The V-band segment has a coupling element that is configured to couple the V-band clamp to a third component. The V-band clamp also has a latch disposed on the V-band segment that is configured to tighten the V-band clamp about the flanges.Type: ApplicationFiled: January 20, 2015Publication date: July 21, 2016Applicant: UNITED TECHNOLOGIES CORPORATIONInventors: Nathan Snape, Matthew J. Howlett, Steven Dill
-
Publication number: 20150369413Abstract: A flange fitting for attaching to double wall tubes includes a fitting center port, a plurality of fitting mounts, inner and outer seal surfaces, fluid communication ports, and a connections surface. The fitting center port extends through the fitting for passing a primary fluid flow. The fitting mounts are spaced radially away from the center port for receiving fasteners. The inner and outer seal surfaces are predominantly flat. The fluid communication ports for pass a secondary fluid flow and fluid communication ports extend through the fitting from between the inner and outer seal surfaces to the connection surface between the inner sleeve connection and the outer connection. The connection surface is on a side of the fitting opposing the seal surfaces. The connection surface includes an inner sleeve connection and an outer connection.Type: ApplicationFiled: February 11, 2015Publication date: December 24, 2015Inventors: Steven Dill, David E. Diaz, Matthew J. Howlett
-
Patent number: 9109464Abstract: A gas turbine engine includes a spool, a gearbox having gearing driven by the spool, and a lubrication system. The lubrication system includes a first heat exchanger positioned in a first air flow path, a second heat exchanger positioned in a second air flow path, and a lubrication pump fluidically connected to both the first heat exchanger and the second heat exchanger. A first air fan is driven by the gearbox for inducing air flow through the first air flow path. A second air fan is driven by an electric motor for inducing air flow through the second air flow path.Type: GrantFiled: August 31, 2011Date of Patent: August 18, 2015Assignee: United Technologies CorporationInventors: Gabriel L. Suciu, Jorn A. Glahn, Brian D. Merry, Christopher M. Dye, Nathan Snape, Matthew J. Howlett, Matthew G. Dixon
-
Publication number: 20140123679Abstract: A flexible heat shield for a gas turbine engine includes a support layer attached to a ceramic fiber layer.Type: ApplicationFiled: November 7, 2012Publication date: May 8, 2014Applicant: UNITED TECHNOLOGIES CORPORATIONInventors: Raphael Lior, Matthew J. Howlett
-
Publication number: 20130047624Abstract: A gas turbine engine includes a spool, a gearbox having gearing driven by the spool, and a lubrication system. The lubrication system includes a first heat exchanger positioned in a first air flow path, a second heat exchanger positioned in a second air flow path, and a lubrication pump fluidically connected to both the first heat exchanger and the second heat exchanger. A first air fan is driven by the gearbox for inducing air flow through the first air flow path. A second air fan is driven by an electric motor for inducing air flow through the second air flow path.Type: ApplicationFiled: August 31, 2011Publication date: February 28, 2013Applicant: UNITED TECHNOLOGIES CORPORATIONInventors: Gabriel L. Suciu, Jorn A. Glahn, Brian D. Merry, Christopher M. Dye, Nathan Snape, Matthew J. Howlett, Matthew G. Dixon
-
Patent number: 7434384Abstract: A fluid mixer for mixing two fluid streams 40, 42 includes a set of main lobes 26 defining alternating primary and secondary main chutes 30, 32, one or more auxiliary lobes 28 intermediate two of the main lobes, and an auxiliary fluid capture duct 62. The auxiliary lobes are defined, at least in part, by the discharge end of the duct. In operation, the duct conveys secondary fluid to secondary chutes 36 defined by the lobes thereby improving the performance of the mixer despite the presence of an obstruction 18 that would otherwise impede thorough mixing of two fluid streams.Type: GrantFiled: October 25, 2004Date of Patent: October 14, 2008Assignee: United Technologies CorporationInventors: Wesley K. Lord, Steven H. Zysman, Matthew J. Howlett
-
Publication number: 20080190096Abstract: A fluid mixer for mixing two fluid streams 40, 42 includes a set of main lobes 26 defining alternating primary and secondary main chutes 30, 32, one or more auxiliary lobes 28 intermediate two of the main lobes, and an auxiliary fluid capture duct 62. The auxiliary lobes are defined, at least in part, by the discharge end of the duct. In operation, the duct conveys secondary fluid to secondary chutes 36 defined by the lobes thereby improving the performance of the mixer despite the presence of an obstruction 18 that would otherwise impede thorough mixing of two fluid streams.Type: ApplicationFiled: October 25, 2004Publication date: August 14, 2008Inventors: Wesley K. Lord, Steven H. Zysman, Matthew J. Howlett