Patents by Inventor Ahmed Yehia Amin Abdel-Rahman
Ahmed Yehia Amin Abdel-Rahman 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: 8659209Abstract: A multistage flextensional transducer includes at least one inner elongate driver member within and mechanically coupled to an inner shell that is nested within an outer shell; the inner shell comprising a pair of contact portions abutting the driver member and a pair of transmission portions on opposite sides of the inner shell between the contact portions; the outer shell being arranged so that the transmission portions act as bridging driver members between the said inner and outer shells, flexure of the outer shell being driven, on actuation of the transducer, by movement of the bridging driver members. The transducer may act as a push or pull actuator or sensor, may magnify displacement and may employ smart materials as driver members. Also cylindrical modules containing thin flextensional actuators may provide axial displacement in a downhole environment and may move a device axially along a downhole pipe or close a valve opening or inch along the pipe.Type: GrantFiled: March 8, 2012Date of Patent: February 25, 2014Assignee: Qinetiq LimitedInventors: Ahmed Yehia Amin Abdel Rahman, Jonathan Geoffrey Gore, Fiona Louise Lowrie, Richard Carson McBride
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Publication number: 20120217845Abstract: A multistage flextensional transducer includes at least one inner elongate driver member within and mechanically coupled to an inner shell that is nested within an outer shell; the inner shell comprising a pair of contact portions abutting the driver member and a pair of transmission portions on opposite sides of the inner shell between the contact portions; the outer shell being arranged so that the transmission portions act as bridging driver members between the said inner and outer shells, flexure of the outer shell being driven, on actuation of the transducer, by movement of the bridging driver members. The transducer may act as a push or pull actuator or sensor, may magnify displacement and may employ smart materials as driver members. Also cylindrical modules containing thin flextensional actuators may provide axial displacement in a downhole environment and may move a device axially along a downhole pipe or close a valve opening or inch along the pipe.Type: ApplicationFiled: March 8, 2012Publication date: August 30, 2012Applicant: QINETIQ LIMITEDInventors: Ahmed Yehia Amin Abdel RAHMAN, Jonathan Geoffrey GORE, Fiona Louise LOWRIE, Richard Carson MCBRIDE
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Patent number: 8159114Abstract: A multistage flextensional transducer includes at least one inner elongate driver member within and mechanically coupled to an inner shell that is nested within an outer shell; the inner shell comprising a pair of contact portions abutting the driver member and a pair of transmission portions on opposite sides of the inner shell between the contact portions; the outer shell being arranged so that the transmission portions act as bridging driver members between the said inner and outer shells, flexure of the outer shell being driven, on actuation of the transducer, by movement of the bridging driver members. The transducer may act as a push or pull actuator or sensor, may magnify displacement and may employ smart materials as driver members. Also cylindrical modules containing thin flextensional actuators may provide axial displacement in a downhole environment and may move a device axially along a downhole pipe or close a valve opening or inch along the pipe.Type: GrantFiled: October 30, 2008Date of Patent: April 17, 2012Assignee: Qinetiq LimitedInventors: Ahmed Yehia Amin Abdel Rahman, Jonathan Geoffrey Gore, Fiona Louise Lowrie, Richard Carson McBride
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Patent number: 8133041Abstract: A high pressure pump for use in the injection of liquid chemicals into subsea oil or gas wells, and intended to be positioned in the subsea environment adjacent to the wellhead, comprises a piezoelectric actuator (19) for reciprocating a plunger (22) which acts to compress and expand the effective volume of a pumping chamber (29) having a valved inlet (15) connected to a source of the liquid and a valved outlet (16) to lead the liquid to the well. The device has a minimum of moving parts and in particular avoids the need for any rotating parts and attendant high performance bearings and seals.Type: GrantFiled: December 21, 2007Date of Patent: March 13, 2012Assignee: Qinetiq LimitedInventors: Jeremy Leonard Clive Ludlow, Jonathan Geoffrey Gore, Adrian Robert Bowles, Mark Gregory Maylin, Richard Carson McBride, Abdul-Salam Kaddour, Ahmed Yehia Amin Abdel-Rahman
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Publication number: 20100320870Abstract: A flextensional transducer that can be stored at room temperature and activated and operated at an elevated temperature in excess of 200° C.Type: ApplicationFiled: October 30, 2008Publication date: December 23, 2010Applicant: QinetiQ LimitedInventors: Ahmed Yehia Amin Abdel Rahman, Jonathan Geoffrey Gore, Fiona Louise Lowrie
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Publication number: 20100308689Abstract: A multistage flextensional transducer includes at least one inner elongate driver member within and mechanically coupled to an inner shell that is nested within an outer shell; the inner shell comprising a pair of contact portions abutting the driver member and a pair of transmission portions on opposite sides of the inner shell between the contact portions; the outer shell being arranged so that the transmission portions act as bridging driver members between the said inner and outer shells, flexure of the outer shell being driven, on actuation of the transducer, by movement of the bridging driver members. The transducer may act as a push or pull actuator or sensor, may magnify displacement and may employ smart materials as driver members. Also cylindrical modules containing thin flextensional actuators may provide axial displacement in a downhole environment and may move a device axially along a downhole pipe or close a valve opening or inch along the pipe.Type: ApplicationFiled: October 30, 2008Publication date: December 9, 2010Applicant: QINETIQ LIMITEDInventors: Ahmed Yehia Amin Abdel Rahman, Jonathan Geoffrey Gore, Fiona Louise Lowrie, Richard Carson McBride
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Publication number: 20100074776Abstract: A high pressure pump for use in the injection of liquid chemicals into subsea oil or gas wells, and intended to be positioned in the subsea environment adjacent to the wellhead, comprises a piezoelectric actuator (19) for reciprocating a plunger (22) which acts to compress and expand the effective volume of a pumping chamber (29) having a valved inlet (15) connected to a source of the liquid and a valved outlet (16) to lead the liquid to the well. The device has a minimum of moving parts and in particular avoids the need for any rotating parts and attendant high performance bearings and seals.Type: ApplicationFiled: December 21, 2007Publication date: March 25, 2010Applicant: QINETIQ LIMITEDInventors: Jeremy Leonard Clive Ludlow, Jonathan Geoffrey Gore, Adrian Robert Bowles, Mark Gregory Maylin, Richard Carson McBride, Abdul-Salam Kaddour, Ahmed Yehia Amin Abdel-Rahman