Patents by Inventor Liyun Zheng

Liyun Zheng 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: 20200225562
    Abstract: A device for processing images are provided. The device a support bar, a mounting housing mounted with a camera lens, and a connector configured to connect the support bar to the mounting housing. The mounting housing is integrally rotatable with the connector with respect to the support bar. The mounting housing may further be mounted with an ultrasonic probe and a lightening device. The ultrasonic probe is configured to monitor a predefined change, such as a change in an occupation state of a parking space, and the camera lens and the lightening device is controlled at least by the monitored change. When the ultrasonic probe monitors that a car is leaving or entering a parking space, the camera lens and the lightening may be switched on.
    Type: Application
    Filed: March 27, 2020
    Publication date: July 16, 2020
    Applicant: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.
    Inventors: Liyun ZHENG, Hui ZHAN, Wenji LI, Dong YE, Qilin CHEN
  • Patent number: 10619273
    Abstract: A needle member for use as a knitting needle and methods of making the same are disclosed. An example needle member may be formed of a metallic material and include a solid tip end and a connecting end opposite the tip end. The connecting end may have a threaded portion configured to be selectively secured to a flexible cable by rotating the needle member relative to the cable, and a solid body extending longitudinally from the solid tip end to the connecting end which defines a needle grip aperture. The needle grip aperture may be fixed within the solid body relative to the threaded portion of the connecting end. An interchangeable knitting needle set may be provided, which includes a plurality of needle members and different length cables for selectively connecting two of the needle members to create different knitting needles having different lengths or needle diameters.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: April 14, 2020
    Assignee: Westing Bridge LLC
    Inventors: Liyun Zheng, Aimee Zheng
  • Publication number: 20200040494
    Abstract: A knitting needle or knitting needle assembly may include a braided metal cable having opposite ends, with first and second cylindrical members coupled to the opposite ends, respectively. Each of the cylindrical members may have a respective longitudinal axis extending along a cylindrical body thereof. At least one of the first and second cylindrical members may be coupled to its respective end of the cable such that the cylindrical member swivels about its longitudinal axis with respect to the cable to permit relative rotation between the respective cylindrical member and the cable. Additionally, the cylindrical member may define a first radially extending surface that prevents axial translation of the cable with respect to the cylindrical member while permitting relative rotation of the cylindrical member about the cable.
    Type: Application
    Filed: October 14, 2019
    Publication date: February 6, 2020
    Inventor: Liyun Zheng
  • Patent number: 10443164
    Abstract: A knitting needle is disclosed, which may include at least one needle member having a tip end and a connector end opposite the tip end, with the needle member having a longitudinal axis extending between the tip end and the connector end. The knitting needle may further include a cable having opposite ends, and a selectively lockable swivel connector joining one of the opposite ends of the cable to the connector end of the needle member. The selectively lockable swivel connector may include a first connector member defining a bore, a second connector member received in the bore, and a radially resilient locking member disposed about the second connector member and received in the bore. The radially resilient locking member may define first and second annular faces at opposite ends of the locking member, respectively.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: October 15, 2019
    Inventors: Liyun Zheng, Aimee Zheng
  • Publication number: 20190284736
    Abstract: A needle member for use as a knitting needle and methods of making the same are disclosed. An example needle member may be formed of a metallic material and include a solid tip end and a connecting end opposite the tip end. The connecting end may have a threaded portion configured to be selectively secured to a flexible cable by rotating the needle member relative to the cable, and a solid body extending longitudinally from the solid tip end to the connecting end which defines a needle grip aperture. The needle grip aperture may be fixed within the solid body relative to the threaded portion of the connecting end. An interchangeable knitting needle set may be provided, which includes a plurality of needle members and different length cables for selectively connecting two of the needle members to create different knitting needles having different lengths or needle diameters.
    Type: Application
    Filed: March 16, 2018
    Publication date: September 19, 2019
    Inventors: Liyun Zheng, Aimee Zheng
  • Patent number: 9080516
    Abstract: A system according to the principles of the present disclosure includes a timing control module and a diagnostic module. The timing control module controls engine valve timing by sending fluid to an advancing chamber of a cam phaser to adjust the cam phaser to an advanced position and by sending fluid to a retarding chamber of the cam phaser to adjust the cam phaser to a retarded position. The diagnostic module identifies a fault in a variable valve lift (VVL) mechanism based on a first difference between an advancing pressure of the advancing chamber and a retarding pressure of the retarding chamber.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: July 14, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Liyun Zheng, Andrew P. Bagnasco, Gregory J. York
  • Patent number: 8720409
    Abstract: An oil squirter for an engine includes a piston-type valve having a damping vent configured to damp oscillations of the valve piston during opening and closing. The valve piston may be spring biased and the valve may opened by oil pressure exerted on the piston at or above a cracking pressure. The damping vent controls displacement of the valve piston by creating delta pressure in oil contained in a piston chamber in opposition to axial piston movement during opening and closing of the valve, to stabilize the axial movement of the piston thereby damping valve oscillation during valve opening and closing. The damping vent operates to increase cracking stability and eliminate cyclic contact of the valve piston and valve seat to prevent noise, wear, binding, and oil system pressure fluctuations due to squirter valve instability.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: May 13, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Liyun Zheng, Neil G. Klueber, Karl R. Gilgenbach
  • Publication number: 20130233271
    Abstract: An oil squirter for an engine includes a piston-type valve having a damping vent configured to damp oscillations of the valve piston during opening and closing. The valve piston may be spring biased and the valve may opened by oil pressure exerted on the piston at or above a cracking pressure. The damping vent controls displacement of the valve piston by creating delta pressure in oil contained in a piston chamber in opposition to axial piston movement during opening and closing of the valve, to stabilize the axial movement of the piston thereby damping valve oscillation during valve opening and closing. The damping vent operates to increase cracking stability and eliminate cyclic contact of the valve piston and valve seat to prevent noise, wear, binding, and oil system pressure fluctuations due to squirter valve instability.
    Type: Application
    Filed: March 8, 2012
    Publication date: September 12, 2013
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Liyun Zheng, Neil G. Klueber, Karl R. Gilgenbach
  • Publication number: 20130073178
    Abstract: A system according to the principles of the present disclosure includes a timing control module and a diagnostic module. The timing control module controls engine valve timing by sending fluid to an advancing chamber of a cam phaser to adjust the cam phaser to an advanced position and by sending fluid to a retarding chamber of the cam phaser to adjust the cam phaser to a retarded position. The diagnostic module identifies a fault in a variable valve lift (VVL) mechanism based on a first difference between an advancing pressure of the advancing chamber and a retarding pressure of the retarding chamber.
    Type: Application
    Filed: September 20, 2011
    Publication date: March 21, 2013
    Applicant: GM Global Technology Operations LLC
    Inventors: Liyun Zheng, Andrew P. Bagnasco, Gregory J. York
  • Patent number: 8210003
    Abstract: A yarn needle assembly may include a first needle member, a second needle member and a cable. The cable may have a first end coupled to an end of the first needle member and a second end coupled to an end of the second needle member. The cable may include a metal cable formed from a plurality of braided metal strands with a nylon coating surrounding the metal cable. The relationship between an overall diameter (D1) of the metal cable, a diameter (D2) of each of the individual metal strands and a total number (N) of braided metal strands may be defined by: (N)(D2)/D1<0.5.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: July 3, 2012
    Inventor: Liyun Zheng
  • Publication number: 20120118021
    Abstract: A yarn needle assembly may include a first needle member, a second needle member and a cable. The cable may have a first end coupled to an end of the first needle member and a second end coupled to an end of the second needle member. The cable may include a metal cable formed from a plurality of braided metal strands with a nylon coating surrounding the metal cable. The relationship between an overall diameter (D1) of the metal cable, a diameter (D2) of each of the individual metal strands and a total number (N) of braided metal strands may be defined by: (N)(D2)/D1<0.5.
    Type: Application
    Filed: November 11, 2011
    Publication date: May 17, 2012
    Inventor: Liyun Zheng
  • Patent number: 8109138
    Abstract: A method and control module for indicating engine oil life includes a viscosity determination module determining a viscosity of the engine oil based on an engine oil pressure and engine oil temperature. The control system further includes a comparison module comparing the viscosity of the engine oil to a threshold and generating a warning signal in response to comparing the viscosity.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: February 7, 2012
    Inventors: Taeyoung Han, Liyun Zheng
  • Publication number: 20100122571
    Abstract: A method and control module for indicating engine oil life includes a viscosity determination module determining a viscosity of the engine oil based on an engine oil pressure and engine oil temperature. The control system further includes a comparison module comparing the viscosity of the engine oil to a threshold and generating a warning signal in response to comparing the viscosity.
    Type: Application
    Filed: November 19, 2008
    Publication date: May 20, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Taeyoung Han, Liyun Zheng
  • Patent number: 7712441
    Abstract: A control module may include a cam phaser control module, a cam phaser oil pressure determination module, and a system oil pressure prediction module. The cam phaser control module may control an oil control valve (OCV) to control an oil flow to a cam phaser. The cam phaser oil pressure determination module may be in communication with the cam phaser control module and may determine a first engine oil pressure at a location between the OCV and the cam phaser when the OCV is in a open position. The system oil pressure prediction module may determine a second engine oil pressure at a location between the OCV and an oil pump outlet based on the first engine oil pressure.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: May 11, 2010
    Inventors: Kenneth J. Cinpinski, Byungho Lee, Liyun Zheng
  • Publication number: 20090164087
    Abstract: A control module may include a cam phaser control module, a cam phaser oil pressure determination module, and a system oil pressure prediction module. The cam phaser control module may control an oil control valve (OCV) to control an oil flow to a cam phaser. The cam phaser oil pressure determination module may be in communication with the cam phaser control module and may determine a first engine oil pressure at a location between the OCV and the cam phaser when the OCV is in a open position. The system oil pressure prediction module may determine a second engine oil pressure at a location between the OCV and an oil pump outlet based on the first engine oil pressure.
    Type: Application
    Filed: July 28, 2008
    Publication date: June 25, 2009
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Kenneth J. Cinpinski, Byungho Lee, Liyun Zheng
  • Patent number: 7004131
    Abstract: A rotary shaft pump for increasing supplied oil pressure to a pressure responsive device in an internal combustion engine. The pump includes a housing adapted to carry a plurality of axially spaced journals of a rotatable shaft. The shaft also includes at least one pumping element having a larger diameter than the other journals of the shaft. A cam phaser carried on one end of the shaft receives pressurized oil from the engine through oil passages extending through the housing and the shaft. As the oil is pumped through the oil passages of the shaft, the oil is centrifugally pumped through a radially extending pumping passage extending though the pumping element to boost oil pressure supplied to the cam phaser.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: February 28, 2006
    Assignee: General Motors Corporation
    Inventors: Jeremy M. Plenzler, Liyun Zheng
  • Publication number: 20060027198
    Abstract: A rotary shaft pump for increasing supplied oil pressure to a pressure responsive device in an internal combustion engine. The pump includes a housing adapted to carry a plurality of axially spaced journals of a rotatable shaft. The shaft also includes at least one pumping element having a larger diameter than the other journals of the shaft. A cam phaser carried on one end of the shaft receives pressurized oil from the engine through oil passages extending through the housing and the shaft. As the oil is pumped through the oil passages of the shaft, the oil is centrifugally pumped through a radially extending pumping passage extending though the pumping element to boost oil pressure supplied to the cam phaser.
    Type: Application
    Filed: August 5, 2004
    Publication date: February 9, 2006
    Inventors: Jeremy M. Plenzler, Liyun Zheng
  • Patent number: 6920850
    Abstract: A lubrication system for an internal combustion engine having a pressure increasing valve and a pressure regulator valve to optimize oil flow through an engine to increase engine efficiency. The lubrication system includes an engine driven oil pump connected to supply pressurized oil through a main oil feed to a main bearing gallery, a cam gallery, a cam phaser and switching valve lifters. The pressure increasing valve connected between the main bearing gallery and the cam gallery restricts oil flow to the cam gallery to raise oil pressure supplied to the cam phaser. The pressure regulator valve connected between the pressure increasing valve and the cam gallery to control oil pressure supplied to the switching lifters for cylinder deactivation or stepping valve train operation. The optimization of oil flow allows the engine to use a smaller oil pump and thereby increase engine efficiency while providing for actuation of the cam phaser or the switching lifters over the full engine speed range.
    Type: Grant
    Filed: September 18, 2003
    Date of Patent: July 26, 2005
    Assignee: General Motors Corporation
    Inventors: Jeremy M. Plenzler, Liyun Zheng
  • Publication number: 20050061289
    Abstract: A lubrication system for an internal combustion engine having a pressure regulator to optimize oil flow through an engine to increase engine efficiency. The lubrication system includes an engine driven oil pump connected to supply pressurized oil through a main oil feed to a main bearing gallery, a cam gallery and a hydraulically actuated device such as a cam phaser or switching valve lifters. A pressure regulator connected between the main oil feed and the galleries selectively restricts oil flow to the galleries to raise oil pressure supplied to the hydraulically actuated device. The increased oil pressure to the cam phaser allows the engine to use a smaller oil pump and thereby increase engine efficiency while providing for actuation of the cam phaser over the full engine speed range. The increased oil pressure to the switching lifters allows the engine to reduce valve lift or disable cylinders over the full engine speed range.
    Type: Application
    Filed: September 18, 2003
    Publication date: March 24, 2005
    Inventors: Jeremy Plenzler, Liyun Zheng
  • Publication number: 20050061279
    Abstract: A lubrication system for an internal combustion engine having a pressure increasing valve and a pressure regulator valve to optimize oil flow through an engine to increase engine efficiency. The lubrication system includes an engine driven oil pump connected to supply pressurized oil through a main oil feed to a main bearing gallery, a cam gallery, a cam phaser and switching valve lifters. The pressure increasing valve connected between the main bearing gallery and the cam gallery restricts oil flow to the cam gallery to raise oil pressure supplied to the cam phaser. The pressure regulator valve connected between the pressure increasing valve and the cam gallery to control oil pressure supplied to the switching lifters for cylinder deactivation or stepping valve train operation. The optimization of oil flow allows the engine to use a smaller oil pump and thereby increase engine efficiency while providing for actuation of the cam phaser or the switching lifters over the full engine speed range.
    Type: Application
    Filed: September 18, 2003
    Publication date: March 24, 2005
    Inventors: Jeremy Plenzler, Liyun Zheng