Patents by Inventor Tung K. Nguyen
Tung K. Nguyen 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: 9212753Abstract: A slam-shut safety device includes a valve body, a valve disc, a reset pin, and a guide collar. The valve disc is disposed within the valve body and shiftable along a slam-shut axis between an open position and a closed second position. The reset pin is operatively coupled to the valve disc and shiftable along the slam-shut axis relative to the valve body between an untripped position placing the valve disc in the open position and a tripped position placing the valve disc in the closed position. The guide collar includes a hollow cylindrical portion extending away from the valve disc at least partly over the reset pin and being slidably disposed in a guide bore of a slam shut body that is connected to the valve body and supporting the reset pin, thereby providing added structural integrity to the rest pin and valve disc.Type: GrantFiled: September 27, 2013Date of Patent: December 15, 2015Assignee: EMERSON PROCESS MANAGEMENT REGULATOR TECHNOLOGIES, INC.Inventors: Cristian-Tiberiu Moldovan, Michel Bouvry, Roman Alexandru-Vlad, Stanley D. Hall, David E. Woollums, Tung K. Nguyen
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Patent number: 9133946Abstract: A slam-shut device includes an inlet, an outlet, a valve seat, and defines a flow path. A valve disc is shiftable between an open position and a closed position, and reset pin responsive to an actuator is coupled to the valve disc and shifts between an untripped position and a tripped position. A cylindrical cage is mounted within the valve body and is disposed in the flow path, and includes a plurality of flow apertures slidably receives the valve disc. The cage includes a first end adjacent the valve seat and a second end away from the valve seat, and the cage forms a cylindrical recess disposed adjacent the second end of the cage and spaced from the flow apertures.Type: GrantFiled: November 29, 2012Date of Patent: September 15, 2015Assignee: EMERSON PROCESS MANAGEMENT REGULATOR TECHNOLOGIES, INC.Inventors: Tung K. Nguyen, Guillaume Fournel, Roman Alexandru-Vlad
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Publication number: 20150234395Abstract: A balanced pressure regulator includes a valve body having a fluid inlet and a fluid outlet connected by a fluid passageway. A valve seat is disposed within the fluid passageway. A balanced plug assembly is disposed within the fluid passageway, the balanced plug assembly including a valve plug that cooperates with the valve seat to selectively open or close the fluid passageway, a retainer operatively connecting the valve plug to a valve stem, a diaphragm separating a chamber from the fluid passageway, a central balancing passage that fluidly connects the fluid passageway with the chamber, and a peripheral balancing passage that fluidly connects the fluid passageway with the chamber, the peripheral balancing passage being located between the retainer and the valve plug.Type: ApplicationFiled: February 18, 2015Publication date: August 20, 2015Inventors: Guolei Fan, Biao Zhou, Nian Chun Liu, Jing Zhang, Yang He, Tung K. Nguyen
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Patent number: 9086158Abstract: A slam-shut safety device having a disc arrestor includes a valve body, a valve seat between an inlet and an outlet, and a reset pin shiftable between untripped and tripped positions. A valve disc support includes has a threaded stem and is operatively coupled to the reset pin. A valve disc fits on the stem of the support and shifts in response to movement of the valve disc support between an open position and a closed second position in which the valve disc is seated against the valve seat. A threaded nut is securable to the threaded portion of the stem of the valve disc support, and an arrestor spring is positioned on the stem of the valve disc support and is secured by the threaded nut. The arrestor spring is arranged to apply a biasing force to valve disc.Type: GrantFiled: September 26, 2013Date of Patent: July 21, 2015Assignee: EMERSON PROCESS MANGEMENT REGULATOR TECHNOLOGIES INC.Inventors: Jeffrey M. Sanders, Tung K. Nguyen, Cristian-Tiberiu Moldovan, Roman Alexandru-Vlad
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Patent number: 8944089Abstract: A balanced port control assembly includes a control element with a valve plug coupled to a valve stem and a pressure sensing labyrinth defined at least partly by the valve plug. The pressure sensing labyrinth provides for fluid communication between a sealing surface of the valve plug and a balancing diaphragm carried internally of the control element. The pressure sensing labyrinth includes at least one pressure sensing passage extending from the sealing surface and into the valve plug along a central longitudinal axis of the control element. So configured, fluid pressure resident on the sealing surface of the valve plug is also resident on the balancing diaphragm such that equal and opposite forces are applied to the control element.Type: GrantFiled: October 24, 2012Date of Patent: February 3, 2015Assignee: Emerson Process Management Regulator Technologies, Inc.Inventors: Tung K. Nguyen, Jason Scott Mevius, Biao Zhou
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Patent number: 8739819Abstract: A fluid regulating device includes a valve body having an inlet, an outlet, a valve port, and a control element shiftable within the valve body. A control assembly includes an actuator coupled to the control element and includes a diaphragm disposed adjacent a diaphragm chamber. A sense tube has a first end, a second end, and an intermediate portion, the first end positioned to communicate with the diaphragm chamber, the second end disposed adjacent the outlet, and the intermediate portion disposed adjacent an intermediate portion of the outlet. The sense tube includes a shoulder and a flared portion, with the flared portion disposed adjacent the second end.Type: GrantFiled: January 13, 2011Date of Patent: June 3, 2014Assignee: Emerson Process Management Regulator Technologies, Inc.Inventors: Gregory L. Foust, Jared B. Chizek, Mark A. Michnevitz, Tung K. Nguyen
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Publication number: 20140130884Abstract: A slam-shut safety device having a disc arrestor includes a valve body, a valve seat between an inlet and an outlet, and a reset pin shiftable between untripped and tripped positions. A valve disc support includes has a threaded stem and is operatively coupled to the reset pin. A valve disc fits on the stem of the support and shifts in response to movement of the valve disc support between an open position and a closed second position in which the valve disc is seated against the valve seat. A threaded nut is securable to the threaded portion of the stem of the valve disc support, and an arrestor spring is positioned on the stem of the valve disc support and is secured by the threaded nut. The arrestor spring is arranged to apply a biasing force to valve disc.Type: ApplicationFiled: September 26, 2013Publication date: May 15, 2014Applicant: EMERSON PROCESS MANAGEMENT REGULATOR TECHNOLOGIES, INC.Inventors: Jeffrey M. Sanders, Tung K. Nguyen, Cristian-Tiberiu Michael Moldovan, Roman Alexandru-Vlad
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Publication number: 20140090727Abstract: A balanced port control assembly includes a control element with a valve plug coupled to a valve stem and a pressure sensing labyrinth defined at least partly by the valve plug. The pressure sensing labyrinth provides for fluid communication between a sealing surface of the valve plug and a balancing diaphragm carried internally of the control element. The pressure sensing labyrinth includes at least one pressure sensing passage extending from the sealing surface and into the valve plug along a central longitudinal axis of the control element. So configured, fluid pressure resident on the sealing surface of the valve plug is also resident on the balancing diaphragm such that equal and opposite forces are applied to the control element.Type: ApplicationFiled: October 24, 2012Publication date: April 3, 2014Applicant: Emerson Process Management Regulator Technologies, IncInventors: Tung K. Nguyen, Jason Scott Mevius, Biao Zhou
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Publication number: 20140083526Abstract: A slam-shut safety device includes a valve body, a valve disc, a reset pin, and a guide collar. The valve disc is disposed within the valve body and shiftable along a slam-shut axis between an open position and a closed second position. The reset pin is operatively coupled to the valve disc and shiftable along the slam-shut axis relative to the valve body between an untripped position placing the valve disc in the open position and a tripped position placing the valve disc in the closed position. The guide collar includes a hollow cylindrical portion extending away from the valve disc at least partly over the reset pin and being slidably disposed in a guide bore of a slam shut body that is connected to the valve body and supporting the reset pin, thereby providing added structural integrity to the rest pin and valve disc.Type: ApplicationFiled: September 27, 2013Publication date: March 27, 2014Applicant: EMERSON PROCESS MANAGEMENT REGULATOR TECHNOLOGIES INC.Inventors: Cristian-Tiberiu Moldovan, Michel Bouvry, Roman Alexandru-Vlad, Stanley D. Hall, David E. Woollums, Tung K. Nguyen
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Publication number: 20140083515Abstract: A slam-shut safety device includes a valve body and defining a flow path, a valve disc mounted on a valve disc support is movable between an open first position spaced away from the valve seat and a closed second position seated against the valve seat. A reset pin is operatively coupled to the valve disc support and is shiftable between an untripped position placing the valve disc in the open position and a tripped position placing the valve disc in the closed position. An anti-rotation assembly is carried by cooperating portions of the valve disc and the valve disc support, with the anti-rotation assembly comprising at least one protrusion and at least one receiving area sized to receive the protrusion, the anti-rotation assembly arranged to stop rotation of the valve disc relative to the valve disc support.Type: ApplicationFiled: September 26, 2013Publication date: March 27, 2014Applicant: Emerson Process Management Regulator Technologies, Inc.Inventors: Jeffrey M. Sanders, Tung K. Nguyen, Cristian-Tiberiu Moldovan, Roman Alexandru-VIad, Tiberiu Moldovan
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Publication number: 20110174381Abstract: A fluid regulating device includes a valve body having an inlet, an outlet, a valve port, and a control element shiftable within the valve body. A control assembly includes an actuator coupled to the control element and includes a diaphragm disposed adjacent a diaphragm chamber. A sense tube has a first end, a second end, and an intermediate portion, the first end positioned to communicate with the diaphragm chamber, the second end disposed adjacent the outlet, and the intermediate portion disposed adjacent an intermediate portion of the outlet. The sense tube includes a shoulder and a flared portion, with the flared portion disposed adjacent the second end.Type: ApplicationFiled: January 13, 2011Publication date: July 21, 2011Applicant: EMERSON PROCESS MANAGEMENT REGULATOR TECHNOLOGIES, INCInventors: Gregory L. Foust, Jared B. Chizek, Mark A. Michnevitz, Tung K. Nguyen