Patents by Inventor Ray F. Bowman
Ray F. Bowman 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: 9297304Abstract: One embodiment of the present invention is a unique gas turbine engine with a bleed air powered auxiliary engine. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for bleed air powered auxiliary engines. Further embodiments, forms, features, aspects, benefits, and advantages of the present application shall become apparent from the description and figures provided herewith.Type: GrantFiled: December 30, 2010Date of Patent: March 29, 2016Assignee: Rolls-Royce North American Technologies, Inc.Inventors: Carl David Nordstrom, Ray F. Bowman
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Patent number: 9175605Abstract: The present invention provides in one embodiment of the present invention a surge margin power recuperation system. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for recuperating power from surge margin bleed air. Further embodiments, forms, features, aspects, benefits, and advantages of the present application shall become apparent from the description and figures provided herewith.Type: GrantFiled: November 22, 2010Date of Patent: November 3, 2015Assignee: Rolls-Royce CorporationInventors: Ray F. Bowman, Stanford Clemens
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Patent number: 9021780Abstract: A gas turbine engine is provided having a variety of forms and features. The gas turbine engine can include a compressor having movable vanes. In one form of operation the compressor can close down the vanes to a relatively low flow capacity position and the compressor can be operated at a higher speed, whereupon the vanes can be repositioned and the gas turbine engine operated at a different condition. The gas turbine engine can include a turbine having movable vanes. In one form of operation the turbine can change the vane positions to a relatively low torque position and the engine operated at a higher fuel flow condition, whereupon the vanes can be repositioned and the gas turbine engine operated at a different condition. The gas turbine engine can have a heater that adds heat to a flow stream, a motor that provides energy to a shaft, and an external load.Type: GrantFiled: December 23, 2009Date of Patent: May 5, 2015Assignee: Rolls-Royce CorporationInventors: Ray F. Bowman, Philip Ray Owen
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Patent number: 8752393Abstract: One embodiment according to the present invention is a unique system for gas turbine engine control. Other embodiments include unique apparatuses, systems, devices, and methods relating to gas turbine engines. Further embodiments, forms, objects, features, advantages, aspects, and benefits of the present invention shall become apparent from the following description and drawings.Type: GrantFiled: December 22, 2009Date of Patent: June 17, 2014Assignee: Rolls-Royce CorporationInventor: Ray F. Bowman
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Patent number: 8079221Abstract: One embodiment of the present application is a gas turbine engine with a compressor that includes a variable geometry mechanism to vary working fluid flow area. A desired state of this mechanism is selected different than a current state to change the amount of flow area. The mechanism has a hysteresis band corresponding to a difference between increasing the flow area to reach the desired state and decreasing the flow area to reach the desired state. To control operation of the mechanism within this hysteresis band, a determination is made whether the desired state corresponds to a greater flow area or a lesser flow area relative to the current state.Type: GrantFiled: January 11, 2011Date of Patent: December 20, 2011Assignee: Rolls-Royce CorporationInventors: Ray F. Bowman, Joseph A. Jaeger, Phillip J. Steffen, Robert G. Kiser
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Publication number: 20110271687Abstract: One embodiment of the present invention is a unique gas turbine engine with a bleed air powered auxiliary engine. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for bleed air powered auxiliary engines. Further embodiments, forms, features, aspects, benefits, and advantages of the present application shall become apparent from the description and figures provided herewith.Type: ApplicationFiled: December 30, 2010Publication date: November 10, 2011Inventors: Carl David Nordstrom, Ray F. Bowman
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Publication number: 20110167780Abstract: One embodiment of the present application is a gas turbine engine with a compressor that includes a variable geometry mechanism to vary working fluid flow area. A desired state of this mechanism is selected different than a current state to change the amount of flow area. The mechanism has a hysteresis band corresponding to a difference between increasing the flow area to reach the desired state and decreasing the flow area to reach the desired state. To control operation of the mechanism within this hysteresis band, a determination is made whether the desired state corresponds to a greater flow area or a lesser flow area relative to the current state.Type: ApplicationFiled: January 11, 2011Publication date: July 14, 2011Inventors: Ray F. Bowman, Joseph A. Jaeger, Phillip J. Steffen, Robert G. Kiser
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Publication number: 20110154830Abstract: The present invention provides in one embodiment of the present invention a surge margin power recuperation system. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for recuperating power from surge margin bleed air. Further embodiments, forms, features, aspects, benefits, and advantages of the present application shall become apparent from the description and figures provided herewith.Type: ApplicationFiled: November 22, 2010Publication date: June 30, 2011Inventors: Ray F. Bowman, Stanford Clemens
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Patent number: 7866159Abstract: One embodiment of the present application is a gas turbine engine with a compressor that includes a variable geometry mechanism to vary working fluid flow area. A desired state of this mechanism is selected different than a current state to change the amount of flow area. The mechanism has a hysteresis band corresponding to a difference between increasing the flow area to reach the desired state and decreasing the flow area to reach the desired state. To control operation of the mechanism within this hysteresis band, a determination is made whether the desired state corresponds to a greater flow area or a lesser flow area relative to the current state.Type: GrantFiled: October 18, 2005Date of Patent: January 11, 2011Assignee: Rolls-Royce CorporationInventors: Ray F. Bowman, Joseph A. Jaeger, Phillip J. Steffen, Robert G. Kiser
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Publication number: 20100162719Abstract: A gas turbine engine is provided having a variety of forms and features. The gas turbine engine can include a compressor having movable vanes. In one form of operation the compressor can close down the vanes to a relatively low flow capacity position and the compressor can be operated at a higher speed, whereupon the vanes can be repositioned and the gas turbine engine operated at a different condition. The gas turbine engine can include a turbine having movable vanes. In one form of operation the turbine can change the vane positions to a relatively low torque position and the engine operated at a higher fuel flow condition, whereupon the vanes can be repositioned and the gas turbine engine operated at a different condition. The gas turbine engine can have a heater that adds heat to a flow stream, a motor that provides energy to a shaft, and an external load.Type: ApplicationFiled: December 23, 2009Publication date: July 1, 2010Inventors: Ray F. Bowman, Philip Ray Owen
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Publication number: 20100162718Abstract: One embodiment according to the present invention is a unique system for gas turbine engine control. Other embodiments include unique apparatuses, systems, devices, and methods relating to gas turbine engines. Further embodiments, forms, objects, features, advantages, aspects, and benefits of the present invention shall become apparent from the following description and drawings.Type: ApplicationFiled: December 22, 2009Publication date: July 1, 2010Inventor: Ray F. Bowman
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Publication number: 20100164234Abstract: A gas turbine engine is provided having a variety of forms and features. The gas turbine engine can include a compressor having movable vanes. In one form of operation the compressor can close down the vanes to a relatively low flow capacity position and the compressor can be operated at a higher speed, whereupon the vanes can be repositioned and the gas turbine engine operated at a different condition. The gas turbine engine can include a turbine having movable vanes. In one form of operation the turbine can change the vane positions to a relatively low torque position and the engine operated at a higher fuel flow condition, whereupon the vanes can be repositioned and the gas turbine engine operated at a different condition. The gas turbine engine can have a heater that adds heat to a flow stream, a motor that provides energy to a shaft, and an external load.Type: ApplicationFiled: December 23, 2009Publication date: July 1, 2010Inventors: Ray F. Bowman, Philip Ray Owen
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Publication number: 20100162720Abstract: A gas turbine engine is provided having a variety of forms and features. The gas turbine engine can include a compressor having movable vanes. In one form of operation the compressor can close down the vanes to a relatively low flow capacity position and the compressor can be operated at a higher speed, whereupon the vanes can be repositioned and the gas turbine engine operated at a different condition. The gas turbine engine can include a turbine having movable vanes. In one form of operation the turbine can change the vane positions to a relatively low torque position and the engine operated at a higher fuel flow condition, whereupon the vanes can be repositioned and the gas turbine engine operated at a different condition. The gas turbine engine can have a heater that adds heat to a flow stream, a motor that provides energy to a shaft, and an external load.Type: ApplicationFiled: December 23, 2009Publication date: July 1, 2010Inventors: Ray F. Bowman, Philip Ray Owen