Patents by Inventor Gengxun K. Gurley
Gengxun K. Gurley 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: 10760702Abstract: An electronically switchable, bi-stable two-port valve includes a sleeve, a first pole piece having air flow passages formed therethrough and a first wire-wound coil mounted therein and connected to a source of electrical power, a second pole piece having air flow passages formed therethrough and a second wire-wound coil mounted therein and connected to the source of electrical power, and a permanent magnet defining an armature and movably mounted between the first and second pole pieces. The first pole piece is mounted in a first end of the sleeve and the second pole piece is mounted in a second end of the sleeve.Type: GrantFiled: December 31, 2018Date of Patent: September 1, 2020Assignee: DunAn Microstaq, Inc.Inventors: E. Nelson Fuller, Parthiban Arunasalam, Kevin C. Sinkar, Dhaman K. Besarla, Gengxun K. Gurley, Joe A. Ojeda, Chen Yang
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Patent number: 10760836Abstract: A spool assembly configured for use in a two-stage proportional control valve in a fluid system includes a substantially cylindrical sleeve having an axially extending sleeve bore extending from an open first end to an open second end. A spool includes a spool bore that extends from an open first axial end to a closed second axial end and is slidably mounted within the sleeve bore. The spool further includes a first circumferentially extending groove defining a fluid flow path, a second circumferentially extending groove formed near a first end thereof, a third circumferentially extending groove formed near the second axial end thereof, a circumferentially extending pressure groove formed therein between the second axial end and the third circumferentially extending groove, and first, second, and third transverse fluid passageways formed through a side wall of the spool.Type: GrantFiled: November 8, 2018Date of Patent: September 1, 2020Assignee: Dunan Microstaq, Inc.Inventors: E. Nelson Fuller, Parthiban Arunasalam, Joe A. Ojeda, Gengxun K. Gurley, Chen Yang, Jennifer O'Keefe
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Patent number: 10662057Abstract: A method of attaching a MEMS die to a surface includes centering and rotationally aligning a solder perform on a solder surface of a body, centering and rotationally aligning a MEMS die on the solder preform, and heating the solder perform in a reflow process until the solder is molten and surface tension of the molten solder moves the MEMS die to a position where the surface tensions balance, and the MEMS die is centered on, and rotationally aligned with, the solder surface of the body.Type: GrantFiled: November 29, 2018Date of Patent: May 26, 2020Assignee: DunAn Microstaq, Inc.Inventors: Wayne C. Long, Joe A. Ojeda, Gengxun K. Gurley, Joseph L. Nguyen
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Patent number: 10443712Abstract: A system for controlling fluid pressure to a transmission system through a MEMS microvalve includes a transmission controller configured to receive a target command pressure, a current system command pressure input signal, and a transmission system operating temperature. A power determination module determines a temperature-related power factor from the target command pressure, the current system command pressure input signal, the transmission system operating temperature received in the controller, and a look-up table within the controller. A power signal module adjusts the current system command pressure input signal by the temperature-related power factor and applies the adjusted current system command pressure input signal to the MEMS microvalve via the controller.Type: GrantFiled: October 30, 2017Date of Patent: October 15, 2019Assignee: DunAn Microstaq, Inc.Inventors: E. Nelson Fuller, Parthiban Arunasalam, Wayne C. Long, Arvind P. Rao, Kevin Sinkar, Gengxun K. Gurley
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Publication number: 20190257439Abstract: An electronically switchable, bi-stable two-port valve includes a sleeve, a first pole piece having air flow passages formed therethrough and a first wire-wound coil mounted therein and connected to a source of electrical power, a second pole piece having air flow passages formed therethrough and a second wire-wound coil mounted therein and connected to the source of electrical power, and a permanent magnet defining an armature and movably mounted between the first and second pole pieces. The first pole piece is mounted in a first end of the sleeve and the second pole piece is mounted in a second end of the sleeve.Type: ApplicationFiled: December 31, 2018Publication date: August 22, 2019Applicant: DunAn Microstaq, Inc.Inventors: E. Nelson Fuller, Parthiban Arunasalam, Kevin C. Sinkar, Dhaman K. Besarla, Gengxun K. Gurley, Joe A. Ojeda, Chen Yang
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Publication number: 20190092629Abstract: A method of attaching a MEMS die to a surface includes centering and rotationally aligning a solder perform on a solder surface of a body, centering and rotationally aligning a MEMS die on the solder preform, and heating the solder perform in a reflow process until the solder is molten and surface tension of the molten solder moves the MEMS die to a position where the surface tensions balance, and the MEMS die is centered on, and rotationally aligned with, the solder surface of the body.Type: ApplicationFiled: November 29, 2018Publication date: March 28, 2019Applicant: DunAn Microstaq, Inc.Inventors: Wayne C. Long, Joe A. Ojeda, Gengxun K. Gurley, Joseph L. Nguyen
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Publication number: 20190092630Abstract: A method of attaching a MEMS die to a surface includes centering and rotationally aligning a solder perform on a solder surface of a body, centering and rotationally aligning a MEMS die on the solder preform, and heating the solder perform in a reflow process until the solder is molten and surface tension of the molten solder moves the MEMS die to a position where the surface tensions balance, and the MEMS die is centered on, and rotationally aligned with, the solder surface of the body.Type: ApplicationFiled: November 29, 2018Publication date: March 28, 2019Applicant: DunAn Microstaq, Inc.Inventors: Wayne C. Long, Joe A. Ojeda, Gengxun K. Gurley, Joseph L. Nguyen
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Publication number: 20190078819Abstract: A spool assembly configured for use in a two-stage proportional control valve in a fluid system includes a substantially cylindrical sleeve having an axially extending sleeve bore extending from an open first end to an open second end. A spool includes a spool bore that extends from an open first axial end to a closed second axial end and is slidably mounted within the sleeve bore. The spool further includes a first circumferentially extending groove defining a fluid flow path, a second circumferentially extending groove formed near a first end thereof, a third circumferentially extending groove formed near the second axial end thereof, a circumferentially extending pressure groove formed therein between the second axial end and the third circumferentially extending groove, and first, second, and third transverse fluid passageways formed through a side wall of the spool.Type: ApplicationFiled: November 8, 2018Publication date: March 14, 2019Applicant: DunAn Microstaq, Inc.Inventors: E. Nelson Fuller, Parthiban Arunasalam, Joe A. Ojeda, Gengxun K. Gurley, Chen Yang, Jennifer O'Keefe
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Patent number: 10189706Abstract: A method of attaching a MEMS die to a surface includes centering and rotationally aligning a solder perform on a solder surface of a body, centering and rotationally aligning a MEMS die on the solder preform, and heating the solder perform in a reflow process until the solder is molten and surface tension of the molten solder moves the MEMS die to a position where the surface tensions balance, and the MEMS die is centered on, and rotationally aligned with, the solder surface of the body.Type: GrantFiled: August 25, 2017Date of Patent: January 29, 2019Assignee: DunAn Microstaq, Inc.Inventors: Wayne C. Long, Joe A. Ojeda, Gengxun K. Gurley, Joseph L. Nguyen
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Patent number: 10145594Abstract: A two-stage proportional control valve configured for use in a fluid system includes a valve body having a longitudinally extending valve body bore formed therethrough. A first stage microvalve is mounted within the valve body bore, and a second stage spool assembly is mounted within the valve body bore downstream of the microvalve. The second stage spool assembly includes a sleeve and a spool slidably mounted within the sleeve.Type: GrantFiled: January 6, 2017Date of Patent: December 4, 2018Assignee: DunAn Microstaq, Inc.Inventors: E. Nelson Fuller, Parthiban Arunasalam, Joe A. Ojeda, Gengxun K. Gurley, Chen Yang, Jennifer O'Keefe
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Publication number: 20180127269Abstract: A method of attaching a MEMS die to a surface includes centering and rotationally aligning a solder perform on a solder surface of a body, centering and rotationally aligning a MEMS die on the solder preform, and heating the solder perform in a reflow process until the solder is molten and surface tension of the molten solder moves the MEMS die to a position where the surface tensions balance, and the MEMS die is centered on, and rotationally aligned with, the solder surface of the body.Type: ApplicationFiled: August 25, 2017Publication date: May 10, 2018Applicant: DunAn Microstaq, Inc.Inventors: Wayne C. Long, Joe A. Ojeda, Gengxun K. Gurley, Joseph L. Nguyen
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Publication number: 20180119799Abstract: A system for controlling fluid pressure to a transmission system through a MEMS microvalve includes a transmission controller configured to receive a target command pressure, a current system command pressure input signal, and a transmission system operating temperature. A power determination module determines a temperature-related power factor from the target command pressure, the current system command pressure input signal, the transmission system operating temperature received in the controller, and a look-up table within the controller. A power signal module adjusts the current system command pressure input signal by the temperature-related power factor and applies the adjusted current system command pressure input signal to the MEMS microvalve via the controller.Type: ApplicationFiled: October 30, 2017Publication date: May 3, 2018Applicant: DunAn Microstaq, Inc.Inventors: E. Nelson Fuller, Parthiban Arunasalam, Wayne C. Long, Arvind P. Rao, Kevin Sinkar, Gengxun K. Gurley
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Patent number: 9909671Abstract: A hybrid spool valve includes a body having a longitudinal bore. The bore has a fluid inlet chamber in fluid communication with a fluid inlet port and a fluid outlet chamber in fluid communication with a fluid outlet port. A spool is slidably mounted in the bore and is movable between a fully open position, a fully closed position, and a plurality of partially open positions. A pilot microvalve is mounted within the bore and is configured to control the sliding movement of the spool by varying the flow of fluid therethrough. A seal is disposed in a groove formed in an outside surface of the spool such that when the spool is in the fully closed position the seal engages a wall of the bore, and when the spool is the fully open position or one of the partially open positions the seal does not engage the bore.Type: GrantFiled: June 24, 2016Date of Patent: March 6, 2018Assignee: DUNAN MICROSTAQ, INC.Inventors: E. Nelson Fuller, Gengxun K. Gurley
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Publication number: 20170219259Abstract: A two-stage proportional control valve configured for use in a fluid system includes a valve body having a longitudinally extending valve body bore formed therethrough. A first stage microvalve is mounted within the valve body bore, and a second stage spool assembly is mounted within the valve body bore downstream of the microvalve. The second stage spool assembly includes a sleeve and a spool slidably mounted within the sleeve.Type: ApplicationFiled: January 6, 2017Publication date: August 3, 2017Applicant: DunAn Microstaq, Inc.Inventors: E. Nelson Fuller, Parthiban Arunasalam, Joe A. Ojeda, Gengxun K. Gurley, Chen Yang, Jennifer O'Keefe
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Patent number: 9618140Abstract: A microvalve includes a first plate having a surface defining an actuator cavity. A second plate has a surface that abuts the surface of the first plate and includes a displaceable member that is disposed within the actuator cavity for movement between a closed position, wherein the displaceable member prevents fluid communication through the microvalve, and an opened position, wherein the displaceable member does not prevent fluid communication through the microvalve. An actuator is connected to the displaceable member and has only one or two pairs of actuator ribs.Type: GrantFiled: July 22, 2015Date of Patent: April 11, 2017Assignee: DunAn Microstaq, Inc.Inventors: Parthiban Arunasalam, E. Nelson Fuller, Joe A. Ojeda, Sr., Gengxun K. Gurley, Chen Yang
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Publication number: 20170002932Abstract: A hybrid spool valve includes a body having a longitudinal bore. The bore has a fluid inlet chamber in fluid communication with a fluid inlet port and a fluid outlet chamber in fluid communication with a fluid outlet port. A spool is slidably mounted in the bore and is movable between a fully open position, a fully closed position, and a plurality of partially open positions. A pilot microvalve is mounted within the bore and is configured to control the sliding movement of the spool by varying the flow of fluid therethrough. A seal is disposed in a groove formed in an outside surface of the spool such that when the spool is in the fully closed position the seal engages a wall of the bore, and when the spool is the fully open position or one of the partially open positions the seal does not engage the bore.Type: ApplicationFiled: June 24, 2016Publication date: January 5, 2017Applicant: DunAn Microstaq, Inc.Inventors: E. Nelson Fuller, Gengxun K. Gurley
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Patent number: 9512936Abstract: A microvalve includes a first plate having an inner surface, a recessed region provided within the inner surface, a normally open fluid port and a normally closed fluid port provided within the recessed region. A first sealing structure extends about the normally open fluid port, and a second sealing structure extends about the normally closed fluid port. A second plate defines a non-movable portion and a movable portion. A surface of the non-movable portion abuts the inner surface of the first plate, the non-movable portion having an opening formed therethrough. The movable portion is formed within the opening, has an axis, and defines a displaceable member connected to the non-movable portion by a convoluted spring formed in the opening.Type: GrantFiled: June 18, 2015Date of Patent: December 6, 2016Assignee: DunAn Microstaq, Inc.Inventors: Edward Nelson Fuller, Parthiban Arunasalam, Chen Yang, Joe A. Ojeda, Sr., Gengxun K. Gurley
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Patent number: 9494255Abstract: A microvalve includes a first plate having a surface, a recessed region provided within the surface, a fluid port provided within the recessed region, and a sealing structure extending about the fluid port. A second plate defines a non-movable portion and a movable portion, a surface of the non-movable portion abutting the surface of the first plate, the non-movable portion having first and second openings formed therethrough. The movable portion is formed within the first opening and has an axis, the movable portion defining a displaceable member connected to the non-movable portion by a convoluted spring formed in a second opening.Type: GrantFiled: June 18, 2015Date of Patent: November 15, 2016Assignee: DunAn Microstaq, Inc.Inventors: Edward Nelson Fuller, Parthiban Arunasalam, Chen Yang, Joe A. Ojeda, Sr., Gengxun K. Gurley
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Patent number: 9488293Abstract: A microvalve includes a first plate having a surface, a recessed region provided within the surface, a fluid port provided within the recessed region, and a sealing structure extending about the fluid port. A second plate defines a non-movable portion and a movable portion formed within the first opening and having an axis. A surface of the non-movable portion abuts the surface of the first plate, the non-movable portion having first and second openings formed therethrough. The first opening has a notch formed in each of two longitudinally extending side walls thereof. The movable portion defines a displaceable member connected to the non-movable portion by a convoluted spring formed in a second opening. The displaceable member has a tab extending outwardly from each of two longitudinally extending side walls thereof, each tab positioned within one of the notches.Type: GrantFiled: June 18, 2015Date of Patent: November 8, 2016Assignee: DunAn Microstaq, Inc.Inventors: Edward Nelson Fuller, Parthiban Arunasalam, Chen Yang, Joe A. Ojeda, Sr., Gengxun K. Gurley
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Publication number: 20160138733Abstract: A microvalve includes a first plate having a surface defining an actuator cavity. A second plate has a surface that abuts the surface of the first plate and includes a displaceable member that is disposed within the actuator cavity for movement between a closed position, wherein the displaceable member prevents fluid communication through the microvalve, and an opened position, wherein the displaceable member does not prevent fluid communication through the microvalve. An actuator is connected to the displaceable member and has only one or two pairs of actuator ribs.Type: ApplicationFiled: July 22, 2015Publication date: May 19, 2016Applicant: DUNAN MICROSTAQ, INC.Inventors: Parthiban Arunasalam, E. Nelson Fuller, Joe A. Ojeda, SR., Gengxun K. Gurley, Chen Yang