Patents by Inventor Stephen J. Mills
Stephen J. Mills 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: 10533746Abstract: A gas turbine engine combustion chamber arrangement includes an annular outer wall and annular inner wall including an upstream and a downstream row of tiles. The downstream end of each tile in the upstream row of tiles has a rail extending towards and sealing with the outer wall and a lip extending in a downstream direction towards the tiles in the downstream row of tiles. The outer wall has a row of apertures to direct coolant onto the lips of the tiles in the upstream row of tiles. The downstream end of each tile in the upstream row of tiles has a plurality of fences extending in a downstream direction from the rail and each fence extends from the outer surface of the lip towards the outer wall. The row of apertures in the annular outer wall is arranged to direct coolant onto the lip between two circumferentially adjacent fences.Type: GrantFiled: November 22, 2016Date of Patent: January 14, 2020Assignee: ROLLS-ROYCE plcInventors: John E Rimmer, Michael A Macquisten, Stephen J Mills, Jochen Rupp, Lynn I Steward, Murthy V Ravikanti
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Publication number: 20170176005Abstract: A gas turbine engine combustion chamber arrangement includes an annular outer wall and annular inner wall including an upstream and a downstream row of tiles. The downstream end of each tile in the upstream row of tiles has a rail extending towards and sealing with the outer wall and a lip extending in a downstream direction towards the tiles in the downstream row of tiles. The outer wall has a row of apertures to direct coolant onto the lips of the tiles in the upstream row of tiles. The downstream end of each tile in the upstream row of tiles has a plurality of fences extending in a downstream direction from the rail and each fence extends from the outer surface of the lip towards the outer wall. The row of apertures in the annular outer wall is arranged to direct coolant onto the lip between two circumferentially adjacent fences.Type: ApplicationFiled: November 22, 2016Publication date: June 22, 2017Applicant: ROLLS-ROYCE plcInventors: John E RIMMER, Michael A. MACQUISTEN, Stephen J. MILLS, Jochen RUPP, Lynn I. STEWARD, Murthy V. RAVIKANTI
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Patent number: 8650882Abstract: A wall element of a gas turbine engine having an inner hot surface, and an outer cooler surface, during use. A plurality of projections is provided on the outer surface to facilitate heat transfer to a coolant flow during use. The projections are arranged in a first density pattern and in a second higher density pattern for increased cooling. The second higher density pattern is positioned adjacent a hotter region of the tile than the first density pattern to reduce the thermal gradient throughout the wall element.Type: GrantFiled: January 11, 2007Date of Patent: February 18, 2014Assignee: Rolls-Royce PLCInventors: James R Woolford, Stephen J Mills, Kevin A White
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Patent number: 8024933Abstract: The invention relates to a wall element for a wall structure of a gas turbine engine combustor. The wall element has an inner, in use, hot surface, and an outer, in use, cooler surface. A plurality of projections is provided on the outer surface to facilitate heat transfer to a coolant flow. The wall element comprises a means to direct more coolant flow at a hot-spot on an adjacent tile than the remainder of the adjacent tile and thereby reducing the thermal gradient across the adjacent tile.Type: GrantFiled: January 8, 2007Date of Patent: September 27, 2011Assignee: Rolls-Royce plcInventors: James R Woolford, Stephen J Mills, Kevin A White
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Patent number: 7919543Abstract: Compositions for inkjet inks, methods for applying the ink to a surface of a substrate, and articles that include indicia printed with the ink. The inkjet inks include a cellulose polymer and a liquid carrier. Unlike currently available commercial inks, the inkjet inks of this invention can be formulated with less toxic ingredients, thus reducing the risks of negative impact on environmental quality and the health and safety of workers who use the inks.Type: GrantFiled: February 14, 2006Date of Patent: April 5, 2011Assignee: Electronics for Imaging, Inc.Inventors: Charles L. Beck, Stephen J. Mills
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Patent number: 7886541Abstract: A combustor wall element arrangement for a gas turbine engine comprises an upstream wall element (50A) overlapping a downstream wall element (50B) and defining a gap (37) and an outlet (35) therebetween. In use, a coolant flow exits the outlet (35) to provide a coolant film (D) across at least a part of the downstream wall element (50B). The outlet (35) has a smaller dimension, normal to the downstream wall element (50B), than the gap (37) thereby increasing the velocity of the coolant flow across at the downstream wall element (50B). The resultant film coolant flow is effective further across the downstream wall element.Type: GrantFiled: January 16, 2007Date of Patent: February 15, 2011Assignee: Rolls-Royce plcInventors: James R Woolford, Stephen J Mills, Kevin A White
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Publication number: 20100251722Abstract: A combustor wall element arrangement for a gas turbine engine comprises an upstream wall element (50A) overlapping a downstream wall element (50B) and defining a gap (37) and an outlet (35) therebetween. In use, a coolant flow exits the outlet (35) to provide a coolant film (D) across at least a part of the downstream wall element (50B). The outlet (35) has a smaller dimension, normal to the downstream wall element (50B), than the gap (37) thereby increasing the velocity of the coolant flow across at the downstream wall element (50B). The resultant film coolant flow is effective further across the downstream wall element.Type: ApplicationFiled: January 16, 2007Publication date: October 7, 2010Inventors: James R. Woolford, Stephen J. Mills, Kevin A. White
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Publication number: 20100229563Abstract: The invention relates to a wall element for a wall structure of a gas turbine engine combustor. The wall element has an inner, in use, hot surface, and an outer, in use, cooler surface. A plurality of projections is provided on the outer surface to facilitate heat transfer to a coolant flow. The wall element comprises a means to direct more coolant flow at a hot-spot on an adjacent tile than the remainder of the adjacent tile and thereby reducing the thermal gradient across the adjacent tile.Type: ApplicationFiled: January 8, 2007Publication date: September 16, 2010Inventors: James R. Woolford, Stephen J. Mills, Kevin A. White
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Patent number: 7600867Abstract: A printing system that includes a source which emits UV radiation to polymerize a fluid that is deposited onto a substrate by one or more print heads. The source emits low energy UV radiation sufficient to set the fluid to a quasi-fluid, non-hardened state.Type: GrantFiled: May 11, 2006Date of Patent: October 13, 2009Assignee: Electronics for Imaging, Inc.Inventors: Stephen J. Mills, Michael D. Mills, Adam C. Lahut, Arthur L. Cleary, Joseph A. Lahut
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Patent number: 7073901Abstract: A printing system that includes a source which emits UV radiation to polymerize a fluid that is deposited onto a substrate by one or more print heads. The source emits low energy UV radiation sufficient to set the fluid to a quasi-fluid, non-hardened state.Type: GrantFiled: June 13, 2002Date of Patent: July 11, 2006Assignee: Electronics For Imaging, Inc.Inventors: Stephen J. Mills, Michael D. Mills, Adam C. Lahut, Arthur L. Cleary, Joseph A. Lahut
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Publication number: 20030035037Abstract: A printing system that includes a source which emits UV radiation to polymerize a fluid that is deposited onto a substrate by one or more print heads. The source emits low energy UV radiation sufficient to set the fluid to a quasi-fluid, non-hardened state.Type: ApplicationFiled: June 13, 2002Publication date: February 20, 2003Applicant: Vutek, Inc.Inventors: Stephen J. Mills, Michael D. Mills, Adam C. Lahut, Arthur L. Cleary, Joseph A. Lahut
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Patent number: 6268056Abstract: In a seal assembly having a support member made of either metal or plastic, and an elastomeric sealing material bonded by an adhesive composition to said support member, said composition being an epoxy resin stabilized silane adhesive composition made up from the following materials in parts by volume, (a) 1 to 80 parts organosilane material, which also includes a silane coupling agent, and a hydrolyzing agent for the organosilane, (b) 0.5 to 70 parts epoxy resin material, which includes an amine curing agent for the epoxy resin, (c) 50 to 3000 parts of aqueous fluid carrier medium for the composition, (d) 0.05 to 20 parts of additive material selected from the group consisting of a surfactant material and a rust inhibitor material.Type: GrantFiled: January 25, 1999Date of Patent: July 31, 2001Assignee: Freudenberg-NOK General PartnershipInventor: Stephen J. Mills
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Patent number: 5351732Abstract: A gas turbine engine includes a casing cooling system which operates in one of two conditions, the first being operational at engine cruise, where all of the cooling air is initially directed onto a specific region of the casing; under full power conditions, some of the cooling air is directed onto the specific casing region and the reminder directed onto the reminder of the casing; the cooling system operates to optimize turbine blade/casing radial clearances.Type: GrantFiled: June 22, 1993Date of Patent: October 4, 1994Assignee: Rolls-Royce plcInventors: Stephen J. Mills, Robin D. Monico, Andrew J. Bradley
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Patent number: 5064343Abstract: The problem of excessive clearances being generated by rub occurring between the tips of turbine blades and the linings on shroud segments which surround the blades is addressed by way of providing a valve 42 of a metal of different coefficient of expansion than the shroud control ring 24. On ground running prior to take off of an associated aircraft, the valve diverts a cooling airflow away from the ring 24, thus causing it to run hot and expand radially. The shrouds 22 are thus moved away from the blade tips 40 and on take off, are sufficiently far away from the tips 42 as to avoid deep penetration of the lining 38 thereby. The higher temperature generated by take off affects the valve 40 and makes it expand rapidly, to open the cooling airflow paths to the ring 24 via the holes 46 and 50.Type: GrantFiled: July 13, 1990Date of Patent: November 12, 1991Inventor: Stephen J. Mills