Patents by Inventor Jin Chao

Jin Chao 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).

  • Publication number: 20190077138
    Abstract: A surfacing material includes a substrate having a top side and a bottom side. A matte surface is formed on the bottom side thereof, wherein the matte surface of the surfacing material is a coating of an electron beam radiation curable material applied to the bottom side of the substrate. The coating is an epoxy acrylic or urethane acrylic laid upon the substrate. The epoxy acrylic or urethane acrylic is irradiated with UV-radiation to produce a UV-radiation layer wherein the epoxy acrylic or urethane acrylic is neither hardened nor is an entire layer of the epoxy acrylic or urethane acrylic crosslinked but rather the epoxy acrylic or urethane acrylic is only crosslinked on the surface thereof, which produces a matting surface through the effects of a micro-convolution.
    Type: Application
    Filed: October 9, 2018
    Publication date: March 14, 2019
    Inventors: Muyuan M. Ma, Rajesh Ramamurthy, Jin Chao
  • Publication number: 20170191297
    Abstract: A hydraulic door closer capable of reducing oil-pressure therein at high temperature, comprises a housing with an oil chamber, an oil storage cavity, and a piston in the housing of the hydraulic door closer. The oil storage cavity is in communication with the oil chamber; when the oil temperature increases, hydraulic oil in the oil chamber and oil storage cavity generates an increased oil pressure move the piston, whereby volume of the oil storage cavity is enlarged, such that oil from the chamber will flow into the cavity, to reduce the oil pressure of the chamber and cavity. When the oil temperature decreases, the oil pressure in the chamber and cavity is reduced, whereby the storage piston restores its original position, whereby volume of the cavity will be reduced, and the oil in the cavity flows back into the chamber. The pressure in the oil chamber is reduced when the hydraulic oil expands due to increased temperature to prevent failure of the seal and to avoid hydraulic oil leakage.
    Type: Application
    Filed: July 15, 2016
    Publication date: July 6, 2017
    Inventor: Wei Jin Chao
  • Patent number: 9151100
    Abstract: A door closer is provided to automatically pull a storm or screen door to a fully closed position without user action. The door closer includes a bracket housing with a cam switch movable along a track as the door opens and closes. The closer cylinder rod is engaged with the cam switch until the door is fully opened. The cam switch biases the closer cylinder and rod as the door approaches the closed position.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: October 6, 2015
    Assignee: Cmech (Guangzhou) Ltd.
    Inventor: Wei Jin Chao
  • Publication number: 20150135478
    Abstract: A door closer is provided to automatically pull a storm or screen door to a fully closed position without user action. The door closer includes a bracket housing with a cam switch movable along a track as the door opens and closes. The closer cylinder rod is engaged with the cam switch until the door is fully opened. The cam switch biases the closer cylinder and rod as the door approaches the closed position.
    Type: Application
    Filed: January 27, 2015
    Publication date: May 21, 2015
    Inventor: Wei Jin Chao
  • Patent number: 9009917
    Abstract: A door closer is provided to automatically pull a storm or screen door to a fully closed position without user action. The door closer includes a bracket housing with a cam switch movable along a track as the door opens and closes. The closer cylinder rod is engaged with the cam switch until the door is fully opened. The cam switch biases the closer cylinder and rod as the door approaches the closed position.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: April 21, 2015
    Assignee: Cmech (Guangzhou), Ltd.
    Inventor: Wei Jin Chao
  • Publication number: 20150026922
    Abstract: A door closer is provided to automatically pull a storm or screen door to a fully closed position without user action. The door closer includes a bracket housing with a cam switch movable along a track as the door opens and closes. The closer cylinder rod is engaged with the cam switch until the door is fully opened. The cam switch biases the closer cylinder and rod as the door approaches the closed position.
    Type: Application
    Filed: July 25, 2013
    Publication date: January 29, 2015
    Applicant: Cmech (Guangzhou), Ltd.
    Inventor: Wei Jin Chao