Patents by Inventor Xiaomei Yu

Xiaomei Yu 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).

  • Patent number: 8778163
    Abstract: A method for electroplating aluminum metal on a magnesium alloy includes providing an Lewis acidic ionic liquid having dissolved species of an aluminum metal salt; pre-treating a surface of the magnesium alloy including subjecting the surface of the magnesium alloy to a reverse current etching in the ionic liquid; electroplating the aluminum metal on the surface using the ionic liquid as the electrolyte; and subjecting the surface of the magnesium alloy to a post-treatment including neutralization rinsing in a rinsing solvent solution.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: July 15, 2014
    Assignee: Sikorsky Aircraft Corporation
    Inventors: Xiaomei Yu, Mark R. Jaworowski, Daniel V. Viens, Joseph J. Sangiovanni
  • Publication number: 20140178710
    Abstract: An aluminum alloy component is protected by an electrodeposited aluminum coating. An electrodeposited intermediate aluminum-transition metal alloy and/or rare earth metal alloy layer between the aluminum alloy substrate and the protective coating enhances coating adhesion and corrosion resistance. The intermediate layer is formed by room temperature electrodeposition in ionic liquids.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 26, 2014
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Lei Chen, Mark R. Jaworowski, Curtis H. Riewe, Xiaomei Yu
  • Patent number: 8721949
    Abstract: A method of making a passenger conveyor handrail includes forming a drive member having a plurality of longitudinally spaced drive surfaces. The drive member has a longitudinal stiffness for maintaining a desired spacing between the drive surfaces. The drive member is inserted into a molding device. A gripping surface portion of the handrail is formed using the molding device such that the gripping surface portion and the drive member are secured together. Another method includes forming a belt drive member having a plurality of teeth that establish a plurality of longitudinally spaced drive surfaces. The belt has a longitudinal stiffness for maintaining a desired spacing between the drive surfaces. Each of the teeth extends across an entire width of the belt. The belt is secured to a gripping surface portion of the handrail.
    Type: Grant
    Filed: May 9, 2007
    Date of Patent: May 13, 2014
    Assignee: Otis Elevator Company
    Inventors: John P. Wesson, John M. Milton-Benoit, Changsheng Guo, James R. Irish, Gopalakrishna Rajagopalan, Xiaomei Yu, Jun Ma, Foster P. Lamm, Justin R. Hawkes
  • Patent number: 8640426
    Abstract: A roller assembly includes a frame (16) defining a doorway (14). A rail (32), which includes at least one supporting surface along at least one side of the rail, is secured to the frame (16). At least one roller (38), which is adapted to roll along the supporting surface of the rail (32), has a tire material (68) that contacts the rail (32). A thermal barrier (62, 70, 72, 76, 80) is positioned to inhibit heat transfer from the rail (32) to the tire material (68).
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: February 4, 2014
    Assignee: Otis Elevator Company
    Inventors: Jinliang Wang, Xiaomei Yu, Mikhail B. Gorbounov, John M. Milton-Benoit, Zlatko Strbuncelj
  • Publication number: 20140015168
    Abstract: An exemplary assembly includes at least one elongated tension member. A jacket covers at least some of the tension member. The polymer jacket comprises a polymer material including a melamine based geometry stabilizer that facilitates maintaining the jacket material near the tension member if the assembly is subjected to a high temperature condition.
    Type: Application
    Filed: September 13, 2013
    Publication date: January 16, 2014
    Applicant: OTIS ELEVATOR COMPANY
    Inventors: Gopal R. Krishnan, Xiaomei Yu, John P. Wesson, John M. Milton-Benoit
  • Publication number: 20130302641
    Abstract: A metal article comprises an alloy substrate having a surface and a non-diffused metal monolayer disposed thereon. The surface has a first surface work function value ?s. The non-diffused monolayer deposited on the surface has a second surface work function value ?s that is less negative than the first surface work function value. A method for depositing the monolayer via underpotential deposition (UPD) is also disclosed.
    Type: Application
    Filed: May 14, 2012
    Publication date: November 14, 2013
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Weilong Zhang, Xiaomei Yu, Lei Chen, Mark R. Jaworowski, Joseph J. Sangiovanni
  • Publication number: 20130299355
    Abstract: A surface preparation solution comprises an ionic liquid solvent and a water and oxygen scavenging species. Methods for making the solution, and methods for using the solution to prepare and activate a substrate surface for bulk electrodeposition are also disclosed.
    Type: Application
    Filed: May 14, 2012
    Publication date: November 14, 2013
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Xiaomei Yu, Lei Chen, Mark R. Jaworowski, Weilong Zhang, Joseph J. Sangiovanni
  • Publication number: 20130274388
    Abstract: An illustrative method of making an elevator load bearing member having at least one elongated tension member at least partially covered by a jacket includes mixing a flame retardant with a polymer material. The flame retardant is selected from a group consisting of (i) a halogen-free melamine based intumescent comprising melamine cyanurate, melamine-phosphate, melamine pyrophosphate or melamine polyphosphate in an amount up to about 20% by weight of the thermoplastic polymer or (ii) a filled polymer having a nanoscale filler chemically bonded to a matrix phase. Applying the mixed flame retardant and polymer material to the tension member forms a jacket of a desired shape.
    Type: Application
    Filed: June 10, 2013
    Publication date: October 17, 2013
    Inventors: Xiaomei YU, Gopal R. KRISHNAN, John P. WESSON, John M. Milton-Benoit, Wayne R. Schmidt
  • Patent number: 8513577
    Abstract: A control device for a thermo-electric device having a heat source side and a heat sink side. The control device has a detector for detecting a temperature difference between the heat source side and the heat sink side. The detector modulates a current for providing an optimal current to the thermo-electric device.
    Type: Grant
    Filed: June 24, 2005
    Date of Patent: August 20, 2013
    Assignee: Carrier Corporation
    Inventors: Lei Chen, Xiaomei Yu
  • Patent number: 8479887
    Abstract: An exemplary assembly includes at least one elongated tension member. A jacket covers at least some of the tension member. The jacket comprises a polymer material. The assembly includes a flame retardant selected from a group consisting of a halogen-free melamine based intumescent or a filled polymer having a nanoscale filler chemically bonded to a matrix phase.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: July 9, 2013
    Assignee: Otis Elevator Company
    Inventors: Xiaomei Yu, Gopal R. Krishnan, John P. Wesson, John M. Milton-Benoit, Wayde R. Schmidt
  • Patent number: 8443574
    Abstract: A door assembly has a door header mounted on a frame defining a doorway, a door movably supported on the frame, and a track including at least one supporting surface along at least one side of the track. The track is secured to the door header. The assembly has at least one roller that is adapted to roll along the track. The roller has a rim portion adjacent a hub portion, and a tire material surrounding the rim portion that contacts the track. The roller is at least partially covered with a thermal barrier between the tire material and at least one of the rim portion and the hub portion to prevent heat transfer to the tire material.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: May 21, 2013
    Assignee: Otis Elevator Company
    Inventors: Xiaomei Yu, Jinliang Wang, John M. Milton-Benoit
  • Publication number: 20130075271
    Abstract: A method for electroplating aluminum metal on a magnesium alloy includes providing an Lewis acidic ionic liquid having dissolved species of an aluminum metal salt; pre-treating a surface of the magnesium alloy including subjecting the surface of the magnesium alloy to a reverse current etching in the ionic liquid; electroplating the aluminum metal on the surface using the ionic liquid as the electrolyte; and subjecting the surface of the magnesium alloy to a post-treatment including neutralization rinsing in a rinsing solvent solution.
    Type: Application
    Filed: September 22, 2011
    Publication date: March 28, 2013
    Applicant: SIKORSKY AIRCRAFT CORPORATION
    Inventors: Xiaomei Yu, Mark R. Jaworowski, Daniel V. Viens, Joseph J. Sangiovanni
  • Patent number: 8387780
    Abstract: An exemplary assembly includes at least one elongated tension member (32). A jacket covers at least some of the tension member (32). The jacket comprises a polymer material (68,64) including an adhesion enhancer (62) that facilitates adhesion between the tension member and the jacket.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: March 5, 2013
    Assignee: Otis Elevator Company
    Inventors: Xiaomei Yu, Gopal R. Krishnan, John P. Wesson, John M. Milton-Benoit
  • Patent number: 8360234
    Abstract: An exemplary assembly includes at least one elongated tension member (32). A jacket covers at least some of the tension member (32). The jacket comprises a polymer material (68,64) including an adhesion enhancer (62) that facilitates adhesion between the tension member and the jacket.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: January 29, 2013
    Assignee: Otis Elevator Company
    Inventors: Xiaomei Yu, Gopal R. Krishnan, John P. Wesson, John M. Milton-Benoit
  • Publication number: 20120189778
    Abstract: A coating method includes depositing a coating material onto a turbine engine component using an ionic liquid that is a melt of the salt. The coating material includes aluminum. The turbine engine component is then heat treated to react with at least one element of the coating material with at least one other element to form a protective coating on the component.
    Type: Application
    Filed: January 26, 2011
    Publication date: July 26, 2012
    Inventors: Curtis H. Riewe, Benjamin Joseph Zimmerman, Mark R. Jaworowski, Xiaomei Yu
  • Publication number: 20110180479
    Abstract: A treatment system includes a feed source, a first treatment unit for separating a feed into a first product and a concentrated feed containing less than about 7% total dissolved solids, and a membrane distillation unit for separating the concentrated feed into a second product and a superconcentrated feed containing at least about 14% total dissolved solids. The membrane distillation unit includes hollow fiber membranes having inner bores for receiving the concentrated feed and membrane walls for allowing vapor transmission of distillate. A method includes delivering feed to a first treatment unit where it is separated into first product and concentrated feed streams; delivering the concentrated feed to internal bores of hollow fiber membranes where it is separated into second product and superconcentrated feed streams as vapor passes across the hollow fiber membranes; delivering the superconcentrated feed to a liquid removal unit; and collecting the first and second product streams.
    Type: Application
    Filed: January 27, 2010
    Publication date: July 28, 2011
    Applicant: MILTON ROY COMPANY
    Inventors: Haralambos Cordatos, James R. Irish, Zidu Ma, Timothy N. Sundel, Xiaomei Yu
  • Publication number: 20110147131
    Abstract: A roller assembly includes a frame (16) defining a doorway (14). A rail (32), which includes at least one supporting surface along at least one side of the rail, is secured to the frame (16). At least one roller (38), which is adapted to roll along the supporting surface of the rail (32), has a tire material (68) that contacts the rail (32). A thermal barrier (62, 70, 72, 76, 80) is positioned to inhibit heat transfer from the rail (32) to the tire material (68).
    Type: Application
    Filed: October 6, 2008
    Publication date: June 23, 2011
    Applicant: OTIS ELEVATOR COMPANY
    Inventors: Jinliang Wang, Xiaomei Yu, Mikhail B. Gorbounov, John M. Milton-Benoit, Zlatko Strbuncelj
  • Publication number: 20110135926
    Abstract: An exemplary assembly includes at least one elongated tension member (32). A jacket covers at least some of the tension member (32). The jacket comprises a polymer material (64, 68) including a friction stabilizer (62) that facilitates maintaining a desired friction characteristic of at least an exterior surface on the jacket.
    Type: Application
    Filed: August 15, 2008
    Publication date: June 9, 2011
    Inventors: Xiaomei Yu, Gopal R. Krishnan, John P. Wesson, John M. Milton-Benoit
  • Publication number: 20110132698
    Abstract: A door assembly has a door header mounted on a frame defining a doorway, a door movably supported on the frame, and a track including at least one supporting surface along at least one side of the track. The track is secured to the door header. The assembly has at least one roller that is adapted to roll along the track. The roller has a rim portion adjacent a hub portion, and a tire material surrounding the rim portion that contacts the track. The roller is at least partially covered with a thermal barrier between the tire material and at least one of the rim portion and the hub portion to prevent heat transfer to the tire material.
    Type: Application
    Filed: October 6, 2008
    Publication date: June 9, 2011
    Applicant: OTIS ELEVATOR COMPANY
    Inventors: Xiaomei Yu, Jinliang Wang, John M. Milton-Benoit
  • Publication number: 20110108372
    Abstract: An exemplary assembly includes at least one elongated tension member (26). A jacket (34) covers at least some of the tension member (32). The polymer jacket (34) comprises a polymer material including a melamine based geometry stabilizer that facilitates maintaining the jacket material near the tension member if the assembly is subjected to a high temperature condition.
    Type: Application
    Filed: August 15, 2008
    Publication date: May 12, 2011
    Inventors: Gopal R. Krishnan, Xiaomei Yu, John P. Wesson, John M. Milton-Benoit