Patents by Inventor Timothy Stephens
Timothy Stephens 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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Publication number: 20180016952Abstract: A valve stem sealing unit (65) for forming a seal round a valve stem (41, 43) of a poppet valve (19, 21) in an engine (1) having a body (5, 7, 13) and operated by a working fluid, the valve stem sealing unit (65) including: a housing (67) defining a through passage (79) running from a first end to a second end, the through passage (69) being arranged to receive a portion of the valve stem (41, 43); a first seal (85) arranged to form a seal between the valve stem (41, 43) and the housing (69) to prevent egress of the working fluid from the first end of the housing (69); and a second seal (89) arranged to form a seal between the housing (69) and a body (5, 7, 13) of the engine (1) to prevent egress of the working fluid from the second end of the housing (69).Type: ApplicationFiled: February 3, 2016Publication date: January 18, 2018Inventors: Graham Stuart Lucking, Timothy Stephen Hordley, Harry Martin Buffery, Don Charles Palmer
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Patent number: 9755420Abstract: An electrical transmission system is described herein. The electrical transmission system can include at least one first phase high-voltage conductor. The electrical transmission system can also include an arrester coupled to the at least one first phase high-voltage conductor, where the arrester includes an arrester body and an isolator, where the arrester body includes a top end and a bottom end, where the top end of the arrester is coupled to the at least one first phase high-voltage conductor, and where the bottom end of the arrester body is coupled to the isolator. The electrical transmission system can further include a ground conductor coupled to a bottom end of the isolator of the arrester. The electrical transmission system can also include a tether coupled to the ground conductor, where the tether comprises a distal end, where the distal end of the tether is coupled to the arrester above the isolator.Type: GrantFiled: June 2, 2015Date of Patent: September 5, 2017Assignee: COOPER TECHNOLOGIES COMPANYInventor: Timothy Stephen Smith
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Patent number: 9721751Abstract: A method for preparing plan-view transmission electron microscopy specimens is disclosed. The method employs isotropic vapor-phase etching in conjunction with one or more integrated etch-stop layers that give rise to a support membrane having a well-controlled, substantially uniform thickness. In some embodiments, the support membrane comprises an etch-stop layer that is formed using a high-precision formation process, such as atomic-layer deposition, oxidation, and the like. As a result, formation of the support membrane does not require additional processes, such as mechanical polishing or ion milling, to achieve its desired thickness. The method enables reduced specimen-preparation time, as well as simultaneous preparation of multiple specimens having large, uniformly thick areas for imaging.Type: GrantFiled: August 21, 2015Date of Patent: August 1, 2017Assignee: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITYInventor: Timothy Stephen English
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Patent number: 9604169Abstract: A discrete bypass particle concentrator can significantly reduce surface fouling and manufacturing cost by including bypass stages after each of concentration stages.Type: GrantFiled: March 20, 2015Date of Patent: March 28, 2017Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGYInventors: Thomas Sebastian, Timothy Stephens
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Publication number: 20170069457Abstract: A method for preparing plan-view transmission electron microscopy specimens is disclosed. The method employs isotropic vapor-phase etching in conjunction with one or more integrated etch-stop layers that give rise to a support membrane having a well-controlled, substantially uniform thickness. In some embodiments, the support membrane comprises an etch-stop layer that is formed using a high-precision formation process, such as atomic-layer deposition, oxidation, and the like. As a result, formation of the support membrane does not require additional processes, such as mechanical polishing or ion milling, to achieve its desired thickness. The method enables reduced specimen-preparation time, as well as simultaneous preparation of multiple specimens having large, uniformly thick areas for imaging.Type: ApplicationFiled: August 21, 2015Publication date: March 9, 2017Inventor: Timothy Stephen English
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Publication number: 20160326986Abstract: The jet engine comprising a ramjet air path extending from an intake, into a combustion chamber, and out an exhaust nozzle, a fuel inlet leading into the combustion chamber, an oxidizer inlet leading into the combustion chamber and a partition being operable to selectively close the ramjet air path upstream of the combustion chamber to allow operation of the jet engine in rocket mode and open the ramjet air path to allow operation of the jet engine in ramjet mode.Type: ApplicationFiled: December 10, 2015Publication date: November 10, 2016Inventors: LUC LAFOREST, Timothy Stephen Rupcich
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Patent number: 9472327Abstract: The disclosed concept relates to hollow core arrester membranes generally and, in particular, to membranes that include a pultruded tube composed of fibers and resin, and one or more wrap layers composed of fibers and resin in the form of a mat or fabric. The one or more wrap layers are applied to the pultruded tube to form a wrapped, pultruded tube, which is over molded with a polymer enclosure.Type: GrantFiled: December 21, 2015Date of Patent: October 18, 2016Assignee: COOPER TECHNOLOGIES COMPANYInventors: Michael M. Ramarge, Timothy Stephen Smith, Jeremy Lane Martin
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Patent number: 9438024Abstract: An isolator protection device can include a housing having at least one wall and a first coupling feature, where the at least one all forms a cavity, where the first coupling feature is configured to couple to an arrester, and where the at least one wall is configured to house an isolator body of an isolator within the cavity. The isolator protection device can also include a securing device disposed within the cavity, where the securing device is configured to secure a stud of the isolator to the isolator body during normal operating conditions.Type: GrantFiled: September 29, 2015Date of Patent: September 6, 2016Assignee: COOPER TECHNOLOGIES COMPANYInventors: Michael M. Ramarge, Timothy Stephen Smith
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Publication number: 20160161479Abstract: The invention relates to optoelectronic systems for detecting one or more target particles. The system includes a reaction chamber, a specimen collector, an optical detector, and a reservoir containing cells, each of the cells having receptors which are present on the surface of each cell and are specific for the target particle to be detected, where binding of the target particle to the receptors directly or indirectly activates a reporter molecule, thereby producing a measurable optical signal.Type: ApplicationFiled: November 11, 2014Publication date: June 9, 2016Inventors: James Douglas Harper, Richard Hart Mathews, Bernadette Johnson, Martha Susan Petrovick, Ann Rundell, Frances Ellen Nargi, Timothy Stephens, Linda Marie Mendenhall, Mark Alexander Hollis, Albert M. Young, Todd H. Rider, Eric David Schwoebel, Trina Rae Vian
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Patent number: 9316107Abstract: An axial flow turbine is described having a casing defining a flow path for a working fluid therein, a rotor co-axial to the casing, a plurality of stages, each including a stationary row of vanes circumferentially mounted on the casing a rotating row blades, circumferentially mounted on the rotor, with within a stage n vanes have an extension such that at least a part of the trailing edge of each of the n vanes reaches into the annular space defined by the trailing edges of the remaining N-n vanes and the leading edges of rotating blades of the same stage.Type: GrantFiled: July 9, 2013Date of Patent: April 19, 2016Assignee: ALSTOM Technology LtdInventors: Benjamin Megerle, Ivan William McBean, Timothy Stephen Rice, Said Havakechian
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Publication number: 20160094021Abstract: An isolator protection device can include a housing flaying at least one wall and a first coupling feature, where the at least one all forms a cavity, where the first coupling feature is configured to couple to an arrester, and where the at least one wall is configured to house an isolator body of an isolator within the cavity. The isolator protection device can also include a securing device disposed within the cavity, where the securing device is configured to secure a stud of the isolator to the isolator body during normal operating conditions.Type: ApplicationFiled: September 29, 2015Publication date: March 31, 2016Applicant: COOPER TECHNOLOGIES COMPANYInventors: Michael M. Ramarge, Timothy Stephen Smith
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Patent number: 9278242Abstract: A pommel horse device for gymnastic training does not require younger users to be constantly supervised with a spotter when using them. The pommel horse device has a height lower than conventional pommel horse devices, typically at about 15 inches as compared to about 63 inches for conventional pommel horse devices. The pommel horse device has three holes in the top for the optional attachment of pommel handles.Type: GrantFiled: July 8, 2013Date of Patent: March 8, 2016Inventor: Timothy Stephen Winn
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Publication number: 20150349515Abstract: An electrical transmission system is described herein. The electrical transmission system can include at least one first phase high-voltage conductor. The electrical transmission system can also include an arrester coupled to the at least one first phase high-voltage conductor, where the arrester includes an arrester body and an isolator, where the arrester body includes a top end and a bottom end, where the top end of the arrester is coupled to the at least one first phase high-voltage conductor, and where the bottom end of the arrester body is coupled to the isolator. The electrical transmission system can further include a ground conductor coupled to a bottom end of the isolator of the arrester. The electrical transmission system can also include a tether coupled to the ground conductor, where the tether comprises a distal end, where the distal end of the tether is coupled to the arrester above the isolator.Type: ApplicationFiled: June 2, 2015Publication date: December 3, 2015Applicant: Cooper Technologies CompanyInventor: Timothy Stephen Smith
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Publication number: 20150265956Abstract: A discrete bypass particle concentrator can significantly reduce surface fouling and manufacturing cost by including bypass stages after each of concentration stages.Type: ApplicationFiled: March 20, 2015Publication date: September 24, 2015Applicant: Massachusetts Institute of TechnologyInventors: Thomas Sebastian, Timothy Stephens
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Publication number: 20150267538Abstract: A steam turbine with a resonance chamber in the outer annulus opposite a rotating blade row. The resonance chamber provides passive resonance to place the excitation at a frequency away from the natural frequency of the blades.Type: ApplicationFiled: March 19, 2015Publication date: September 24, 2015Inventor: Timothy Stephen RICE
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Patent number: 9005989Abstract: The invention relates to optoelectronic systems for detecting one or more target particles. The system includes a reaction chamber, a specimen collector, an optical detector, and a reservoir containing cells, each of the cells having receptors which are present on the surface of each cell and are specific for the target particle to be detected, where binding of the target particle to the receptors directly or indirectly activates a reporter molecule, thereby producing a measurable optical signal.Type: GrantFiled: March 3, 2011Date of Patent: April 14, 2015Assignee: Massachusetts Institute of TechnologyInventors: James Douglas Harper, Richard Hart Mathews, Bernadette Johnson, Martha Susan Petrovick, Ann Rundell, Frances Ellen Nargi, Timothy Stephens, Linda Marie Mendenhall, Mark Alexander Hollis, Albert M. Young, Todd H. Rider, Eric David Schwoebel, Trina Rae Vian
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Publication number: 20150093745Abstract: The invention relates to optoelectronic systems for detecting one or more target particles. The system includes a reaction chamber, a specimen collector, an optical detector, and a reservoir containing cells, each of the cells having receptors which are present on the surface of each cell and are specific for the target particle to be detected, where binding of the target particle to the receptors directly or indirectly activates a reporter molecule, thereby producing a measurable optical signal.Type: ApplicationFiled: November 13, 2014Publication date: April 2, 2015Inventors: James Douglas Harper, Richard Hart Mathews, Bernadette Johnson, Martha Susan Petrovick, Ann Rundell, Frances Ellen Nargi, Timothy Stephens, Linda Marie Mendenhall, Mark Alexander Hollis, Albert M. Young, Todd H. Rider, Eric David Schwoebel, Trina Rae Vian
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Publication number: 20140369815Abstract: Configuration of the last stage of a steam turbine where rotor blades rotate encircled by a vane carrier, such that a plurality of passages are located in the vane carrier, such that a fluid is blown through these passages forming a flow that impinges onto the rotor blades, the number of passages, the location of the passages in the vane carrier and the velocity of the flow impinging onto the rotor blades, being calculated in such a way that rotating flow instabilities in the rotor blades when the steam turbine operates at low volumetric flow conditions are avoided.Type: ApplicationFiled: June 16, 2014Publication date: December 18, 2014Inventors: Brian Robert HALLER, Timothy Stephen Rice
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Publication number: 20140017071Abstract: An axial flow turbine is described having a casing defining a flow path for a working fluid therein, a rotor co-axial to the casing, a plurality of stages, each including a stationary row of vanes circumferentially mounted on the casing a rotating row blades, circumferentially mounted on the rotor, with within a stage n vanes have an extension such that at least a part of the trailing edge of each of the n vanes reaches into the annular space defined by the trailing edges of the remaining N-n vanes and the leading edges of rotating blades of the same stage.Type: ApplicationFiled: July 9, 2013Publication date: January 16, 2014Inventors: Benjamin MEGERLE, Ivan William MCBEAN, Timothy Stephen RICE, Said HAVAKECHIAN
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Publication number: 20140011641Abstract: A pommel horse device for gymnastic training does not require younger users to be constantly supervised with a spotter when using them. The pommel horse device has a height lower than conventional pommel horse devices, typically at about 15 inches as compared to about 63 inches for conventional pommel horse devices. The pommel horse device has three holes in the top for the optional attachment of pommel handles.Type: ApplicationFiled: July 8, 2013Publication date: January 9, 2014Inventor: Timothy Stephen Winn