Patents by Inventor Xiaoyuan Chang

Xiaoyuan Chang 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: 11713211
    Abstract: A belt of an elevator system includes one or more tension elements extending longitudinally along a length of the belt, and an elastomeric jacket at least partially enveloping the one or more tension elements. The jacket defines a traction side configured to be interactive with a traction sheave of the elevator system and a back side opposite the traction side. A protective tape is applied to the elastomeric jacket at the back side. A method of assembling an elevator system includes forming a belt, and installing the belt in a hoistway of the elevator system. One or more additional components of the elevator system are installed in the hoistway. A protective tape is removed from a jacket of the belt after installation of the one or more additional components is completed.
    Type: Grant
    Filed: July 21, 2022
    Date of Patent: August 1, 2023
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Hong Yang, Xiaoyuan Chang
  • Patent number: 11511970
    Abstract: An illustrative example embodiment of an elevator sheave liner includes a liner body having an inner surface configured to be received against a sheave and an outer surface configured to engage an elevator tension member. The liner body comprises a polymer material and a plurality of wear resistance particles in the composite material. The wear resistance particles are nanoparticles or microparticles. At least some of the wear resistance particles establish a traction characteristic of the outer surface of the sheave liner.
    Type: Grant
    Filed: August 1, 2020
    Date of Patent: November 29, 2022
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Xiaoyuan Chang, Hong Yang
  • Publication number: 20220356045
    Abstract: A belt of an elevator system includes one or more tension elements extending longitudinally along a length of the belt, and an elastomeric jacket at least partially enveloping the one or more tension elements. The jacket defines a traction side configured to be interactive with a traction sheave of the elevator system and a back side opposite the traction side. A protective tape is applied to the elastomeric jacket at the back side. A method of assembling an elevator system includes forming a belt, and installing the belt in a hoistway of the elevator system. One or more additional components of the elevator system are installed in the hoistway. A protective tape is removed from a jacket of the belt after installation of the one or more additional components is completed.
    Type: Application
    Filed: July 21, 2022
    Publication date: November 10, 2022
    Inventors: Hong Yang, Xiaoyuan Chang
  • Patent number: 11407616
    Abstract: A belt of an elevator system includes one or more tension elements extending longitudinally along a length of the belt, and an elastomeric jacket at least partially enveloping the one or more tension elements. The jacket defines a traction side configured to be interactive with a traction sheave of the elevator system and a back side opposite the traction side. A protective tape is applied to the elastomeric jacket at the back side. A method of assembling an elevator system includes forming a belt, and installing the belt in a hoistway of the elevator system. One or more additional components of the elevator system are installed in the hoistway. A protective tape is removed from a jacket of the belt after installation of the one or more additional components is completed.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: August 9, 2022
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Hong Yang, Xiaoyuan Chang
  • Publication number: 20220033228
    Abstract: An illustrative example embodiment of an elevator sheave liner includes a liner body having an inner surface configured to be received against a sheave and an outer surface configured to engage an elevator tension member. The liner body comprises a polymer material and a plurality of wear resistance particles in the composite material. The wear resistance particles are nanoparticles or microparticles. At least some of the wear resistance particles establish a traction characteristic of the outer surface of the sheave liner.
    Type: Application
    Filed: August 1, 2020
    Publication date: February 3, 2022
    Inventors: Xiaoyuan CHANG, Hong YANG
  • Publication number: 20210362981
    Abstract: An elevator sheave includes a sheave body and a coating on a surface of the sheave body. The coating includes microcracks and a filler in the microcracks. A method of making a sheave for an elevator system is also disclosed.
    Type: Application
    Filed: August 6, 2021
    Publication date: November 25, 2021
    Inventors: Xiaoyuan CHANG, David R. Torlai
  • Patent number: 11111108
    Abstract: An elevator sheave includes a sheave body and a coating on a surface of the sheave body. The coating includes microcracks and a filler in the microcracks. A method of making a sheave for an elevator system is also disclosed.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: September 7, 2021
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Xiaoyuan Chang, David R. Torlai
  • Publication number: 20210229955
    Abstract: A belt of an elevator system includes one or more tension elements extending longitudinally along a length of the belt, and an elastomeric jacket at least partially enveloping the one or more tension elements. The jacket defines a traction side configured to be interactive with a traction sheave of the elevator system and a back side opposite the traction side. A protective tape is applied to the elastomeric jacket at the back side. A method of assembling an elevator system includes forming a belt, and installing the belt in a hoistway of the elevator system. One or more additional components of the elevator system are installed in the hoistway. A protective tape is removed from a jacket of the belt after installation of the one or more additional components is completed.
    Type: Application
    Filed: January 24, 2020
    Publication date: July 29, 2021
    Inventors: Hong Yang, Xiaoyuan Chang
  • Patent number: 10647547
    Abstract: An elevator maintenance kit is provided for surfacing an elevator sheave that engages with an elevator tension member. The kit includes a substrate with an adhesive backing, and a substrate applicator that is operable to apply the substrate to the sheave as the sheave is rotated. The adhesive backing is operable to attach the substrate to the sheave during the sheave rotation.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: May 12, 2020
    Assignee: Otis Elevator Company
    Inventors: Xiaoyuan Chang, David R. Torlai, Peter Keyo, Lance L. Lavender, Hong Yang
  • Publication number: 20200055706
    Abstract: A traction sheave for an elevator includes a composite coating applied directly to a surface of the traction sheave to at least partially define a traction surface arranged to engage a tension member. The composite coating including a coating having surface roughening particles arranged to provide a predetermined surface roughness of the traction surface within a range of 1-5 ?m.
    Type: Application
    Filed: August 17, 2018
    Publication date: February 20, 2020
    Inventor: Xiaoyuan Chang
  • Publication number: 20190337770
    Abstract: An elevator sheave includes a sheave body and a coating on a surface of the sheave body. The coating includes microcracks and a filler in the microcracks. A method of making a sheave for an elevator system is also disclosed.
    Type: Application
    Filed: May 4, 2018
    Publication date: November 7, 2019
    Inventors: Xiaoyuan Chang, David R. Torlai
  • Patent number: 10023432
    Abstract: A method of making a guide rail for an elevator system includes providing a metallic guide rail having a base portion and a blade portion extending from the base portion The blade portion includes one or more guide surfaces interactive with a safety brake of the elevator system. A protective layer is applied to the guide rail for corrosion protection and a perimeter of the protective layer is adhered to the guide rail to seal the guide surfaces from corrosive elements, while not adhering the protective layer to the guide surfaces.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: July 17, 2018
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Xiaoyuan Chang, David R. Torlai
  • Publication number: 20170305721
    Abstract: An elevator maintenance kit is provided for surfacing an elevator sheave that engages with an elevator tension member. The kit includes a substrate with an adhesive backing, and a substrate applicator that is operable to apply the substrate to the sheave as the sheave is rotated. The adhesive backing is operable to attach the substrate to the sheave during the sheave rotation.
    Type: Application
    Filed: July 10, 2017
    Publication date: October 26, 2017
    Inventors: Xiaoyuan Chang, David R. Torlai, Peter Keyo, Lance L. Lavender, Hong Yang
  • Patent number: 9701517
    Abstract: An elevator maintenance kit is provided for surfacing an elevator sheave that engages with an elevator tension member. The kit includes a substrate with an adhesive backing, and a substrate applicator that is operable to apply the substrate to the sheave as the sheave is rotated. The adhesive backing is operable to attach the substrate to the sheave during the sheave rotation.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: July 11, 2017
    Assignee: Otis Elevator Company
    Inventors: Xiaoyuan Chang, David R. Torlai, Peter Keyo, Lance L. Lavender, Hong Yang
  • Publication number: 20160280512
    Abstract: A method of making a guide rail for an elevator system includes providing a metallic guide rail having a base portion and a blade portion extending from the base portion The blade portion includes one or more guide surfaces interactive with a safety brake of the elevator system. A protective layer is applied to the guide rail for corrosion protection and a perimeter of the protective layer is adhered to the guide rail to seal the guide surfaces from corrosive elements, while not adhering the protective layer to the guide surfaces.
    Type: Application
    Filed: November 8, 2013
    Publication date: September 29, 2016
    Inventors: Xiaoyuan CHANG, David R. TORLAI
  • Publication number: 20150210510
    Abstract: An elevator maintenance kit is provided for surfacing an elevator sheave that engages with an elevator tension member. The kit includes a substrate with an adhesive backing, and a substrate applicator that is operable to apply the substrate to the sheave as the sheave is rotated. The adhesive backing is operable to attach the substrate to the sheave during the sheave rotation.
    Type: Application
    Filed: May 4, 2012
    Publication date: July 30, 2015
    Applicant: OTIS ELEVATOR COMPANY
    Inventors: Xiaoyuan Chang, David R. Torlai, Peter Keyo, Lance L. Lavender, Hong Yang
  • Publication number: 20130171463
    Abstract: A load bearing member includes at least one elongated tension member having at least one wire and a protective coating on the elongated tension member. The protective coating includes a first corrosion inhibitor having an oxide-forming metal, a second corrosion inhibitor having a rare earth metal, and a third corrosion inhibitor having an organic material.
    Type: Application
    Filed: August 13, 2010
    Publication date: July 4, 2013
    Applicant: OTIS ELEVATOR COMPANY
    Inventors: Xiaoyuan Chang, Hong Yang
  • Patent number: 8091620
    Abstract: A heat exchanger includes a plurality of flattened, multi-channel heat exchange tubes of generally J-shape extending between an inlet header and an outlet header. Each heat exchange tube has a base bend that extends horizontally between the vertically extending relatively shorter leg, which is in fluid flow communication with the fluid chamber of the inlet header, and the vertically extending relatively longer leg, which is in fluid flow communication with the fluid chamber of the outlet header.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: January 10, 2012
    Assignee: Carrier Corporation
    Inventors: Mikhail B. Gorbounov, Igor B. Vaisman, Parmesh Verma, Lisa P. Sylvia, Xiaoyuan Chang, Gary D. Winch
  • Patent number: 7341677
    Abstract: A non-carcinogenic corrosion inhibiting additive includes an anodic corrosion inhibitor and/or a cathodic corrosion inhibitor and a solubility enhancer for the inhibitors in the form of a metal complexing agent.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: March 11, 2008
    Assignee: United Technologies Corporation
    Inventors: Xiaomei Yu, Weilong Zhang, Thomas Garosshen, Promila Bhatia, Mark Jaworowski, Foster Lamm, Xia Tang, Amy Besing, Mike A. Kryzman, Xiaoyuan Chang
  • Publication number: 20080041092
    Abstract: A heat exchanger includes a plurality of flattened, multi-channel heat exchange tubes of generally J-shape extending between an inlet header and an outlet header. Each heat exchange tube has a base bend that extends horizontally between the vertically extending relatively shorter leg, which is in fluid flow communication with the fluid chamber of the inlet header, and the vertically extending relatively longer leg, which is in fluid flow communication with the fluid chamber of the outlet header.
    Type: Application
    Filed: December 28, 2005
    Publication date: February 21, 2008
    Inventors: Mikhail Gorbounov, Igor Vaisman, Parmesh Verma, Lisa Sylvia, Xiaoyuan Chang, Gary Winch