Patents by Inventor Alexander E H Fitzhugh
Alexander E H Fitzhugh 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: 8757508Abstract: A fluid flow control device has an annular fixed body with at least one aperture in an annular surface thereof. When in use, fluid is arranged to flow through the at least one aperture. A thermally responsive annular valve element is mounted concentrically with respect to the fixed body. The configuration of the annular valve element is changeable with temperature so as to control the flow of fluid through the at least one aperture.Type: GrantFiled: April 8, 2010Date of Patent: June 24, 2014Assignee: Rolls-Royce PLCInventors: Andras D Haasz, Alexander E H Fitzhugh, Christopher J Burden, Jonathan Wilson, Samuel M Sampson, Derek Clarke
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Patent number: 8667848Abstract: A pressure indicator for indicating pressure of a pressure source. The indicator comprises a first reservoir which defines a first enclosed volume having a first inlet pipe for communication between the first enclosed volume and a first source of pressurized fluid. A passage which provides a flow path for the pressurized fluid.Type: GrantFiled: September 6, 2011Date of Patent: March 11, 2014Assignee: Rolls-Royce PLCInventors: Douglas J. Angus, Alexander E. H. Fitzhugh
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Patent number: 8650962Abstract: A pressure indicator for indicating pressure of a pressure source. The indicator comprises a first reservoir which defines a first enclosed volume having a first inlet pipe for communication between the first enclosed volume and a first source of pressurised fluid. The first inlet pipe defines a nominal communication path length between the first enclosed volume and a first source of pressurised fluid. A member is provided in the first inlet pipe which defines one or more communication paths of greater length to that of the nominal communication path length.Type: GrantFiled: September 6, 2011Date of Patent: February 18, 2014Assignee: Rolls-Royce PLCInventors: Douglas J. Angus, Alexander E. H. Fitzhugh
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Patent number: 8573061Abstract: A pressure indicator for indicating pressure of a pressure source. The indicator comprises a first reservoir which defines a first enclosed volume having a first inlet pipe for communication between the first enclosed volume and a first source of pressurised fluid. A damping passage is provided in fluid communication with the first enclosed volume. A pressure oscillation damping means is provided in the damping passage. The damping means comprises a moveable body constrained within a limited range of motion along the damping passage.Type: GrantFiled: September 6, 2011Date of Patent: November 5, 2013Assignee: Rolls-Royce PLCInventors: Douglas J. Angus, Alexander E. H. Fitzhugh
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Patent number: 8376680Abstract: An assembly comprises first and second components provided with holes receiving a retaining element in the form of a pin, in order to retain the components together. The pin is made from a shape memory effect material, and is inserted into the holes in a straight configuration, following which a change in temperature causes a retaining portion of the pin to deform into a second configuration, in which withdrawal of the pin is prevented.Type: GrantFiled: January 22, 2010Date of Patent: February 19, 2013Assignee: Rolls-Royce PLCInventors: Andras D Haasz, Christopher J Burden, Jonathan Wilson, Alexander E H Fitzhugh, Samuel M Sampson
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Publication number: 20120090530Abstract: A pressure indicator for indicating pressure of a pressure source. The indicator comprises a first reservoir which defines a first enclosed volume having a first inlet pipe for communication between the first enclosed volume and a first source of pressurised fluid. The first inlet pipe defines a nominal communication path length between the first enclosed volume and a first source of pressurised fluid. A member is provided in the first inlet pipe which defines one or more communication paths of greater length to that of the nominal communication path length.Type: ApplicationFiled: September 6, 2011Publication date: April 19, 2012Applicant: ROLLS-ROYCE PLCInventors: Douglas J. ANGUS, Alexander E.H. FITZHUGH, Michael T. TURNER
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Publication number: 20120090531Abstract: A pressure indicator for indicating pressure of a pressure source. The indicator comprises a first reservoir which defines a first enclosed volume having a first inlet pipe for communication between the first enclosed volume and a first source of pressurised fluid. A damping passage is provided in fluid communication with the first enclosed volume. A pressure oscillation damping means is provided in the damping passage. The damping means comprises a moveable body constrained within a limited range of motion along the damping passage.Type: ApplicationFiled: September 6, 2011Publication date: April 19, 2012Applicant: ROLLS-ROYCE PLCInventors: Douglas J. ANGUS, Alexander E. H. FITZHUGH
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Publication number: 20120090397Abstract: A pressure indicator for indicating pressure of a pressure source. The indicator comprises a first reservoir which defines a first enclosed volume having a first inlet pipe for communication between the first enclosed volume and a first source of pressurised fluid. A passage which provides a flow path for the pressurised fluid.Type: ApplicationFiled: September 6, 2011Publication date: April 19, 2012Applicant: ROLLS-ROYCE PLCInventors: Douglas J. ANGUS, Alexander E.H. FITZHUGH
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Publication number: 20100288376Abstract: A fluid flow control device for regulating the flow of fluid in a passage comprises an annular fixed body having at least one aperture in an annular surface thereof, through which fluid is arranged to flow in use, and a thermally responsive annular valve element mounted concentrically with respect to the fixed body and whose configuration is changeable with temperature so as to control the flow of fluid through the at least one aperture.Type: ApplicationFiled: April 8, 2010Publication date: November 18, 2010Applicant: ROLLS-ROYCE PLCInventors: Andras D. Haasz, Alexander E. H. Fitzhugh, Christopher J. Burden, Jonathan Wilson, Samuel M. Sampson, Derek Clarke
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Publication number: 20100202855Abstract: An assembly comprises first and second components provided with holes receiving a retaining element in the form of a pin, in order to retain the components together. The pin is made from a shape memory effect material, and is inserted into the holes in a straight configuration, following which a change in temperature causes a retaining portion of the pin to deform into a second configuration, in which withdrawal of the pin is prevented.Type: ApplicationFiled: January 22, 2010Publication date: August 12, 2010Applicant: ROLLS-ROYCE PLCInventors: Andras D. HAASZ, Christopher J. BURDEN, Jonathan WILSON, Alexander E. H. FITZHUGH, Samuel M. SAMPSON