Patents by Inventor Chengwu An

Chengwu An 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: 10058959
    Abstract: A method for remanufacturing an ultra-large copper nut includes steps of: step (1) coarsening treatment; step (2) purifying treatment; step (3) detecting a material of the ultra-large copper nut; step (4) sleeving a thermal insulation device; step (5) preheating the ultra-large copper nut; step (6) melting-deposition shaping; step (7) post-processing; and step (8) detecting. The method of the present invention simultaneously utilizes water, electricity, gas, fire and machine and performs melting-deposition on materials by simultaneously supplying water, electricity, gas, fire and machine according to the designed requirements. The method of the present invention solves problems of large thickness abrasion and remediation of fracture components. The method of the present invention is capable of preventing the ultra-large copper nut from deformation and collapse and is a feasible remanufacturing for decreasing the huge economic loss caused by damages of expensive ultra-large of nonferrous metals.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: August 28, 2018
    Assignee: Wuhan Kaiming High Tech Co., Ltd.
    Inventors: Kaiming Zhang, Xubing Chen, Jiang Li, Zhigang Fu, Mingxi Li, Hongbo Zhao, Guanglei Chen, Sigu Zhu, Zhitian Liu, Li Lin, Wenbin Luo, Fuquan Liu, Hejiao Xiao, Daoguo Zhou, Yide Liao, Zhenlin Yang, Ganggui Hu, Guilin Zheng, Weiguo Wu, Chengwu Liu
  • Publication number: 20180238420
    Abstract: A number of variations may include a product that may include a linking member that may have links arranged in rows that have multiple pitch lengths. Each of the rows may have at least one link. Each of the multiple pitch lengths may be a discrete length that may be different from others of the multiple pitch lengths. The rows may be arranged along the linking member in a repeating sequence of the multiple pitch lengths.
    Type: Application
    Filed: September 16, 2015
    Publication date: August 23, 2018
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Chengwu Duan, Chi-kuan Kao, Jian Yao
  • Patent number: 10049589
    Abstract: Techniques for providing an object awareness guidance to clear a landing space may be provided. For example, during delivery an unmanned aerial vehicle (UAV) may capture an image of a potential landing zone and identify one or more objects in the image that may impede or obstruct delivery of the item in the potential landing zone. The UAV may be configured to generate and provide instructions to a user device to move or remove the identified one or more objects from the potential landing zone thereby creating a safe and unobstructed landing zone to deliver the item.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: August 14, 2018
    Assignee: Amazon Technologies, Inc.
    Inventors: Scott Patrick Boyd, Chengwu Cui, Sarah Graber, Barry James O'Brien, Joshua John Watson, Scott Michael Wilcox
  • Publication number: 20180215249
    Abstract: A powertrain includes an internal combustion engine, an electric machine including a rotor, a geartrain including a pump drive mechanism, a first clutch and a second clutch and a variator for a continuously variable transmission (CVT). The internal combustion engine is rotatably coupled to the rotor of the electric machine by activation of a second clutch. The internal combustion engine is rotatably coupled to the variator by activation of first and second clutches. The rotor of the electric machine is rotatably coupled to the variator by activation of the first clutch, and the electric machine is operative in either a forward direction or a reverse direction. The geartrain is disposed to operate the pump drive mechanism to drive a fluidic pump in a first direction when the electric machine is operating in the forward direction and when the electric machine is operating in the reverse direction.
    Type: Application
    Filed: February 1, 2017
    Publication date: August 2, 2018
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Chengwu Duan, Jian Yao, Zhen Gao
  • Patent number: 10032384
    Abstract: A location marker that may be used to provide information to a vehicle, such as an unmanned aerial vehicle (UAV). The location marker may include a plurality of retroreflectors that may form a pattern readable by a vehicle or other device. The pattern may be read to extract an identifier of a location, such as an address or an identifier of a person. A global positioning system (GPS) device may transmit a general location of the location marker to the vehicle, while the location marker may provide a unique visual location identifier to a device within visual range of the location marker. In some embodiments, the location marker may also include lights that may be individually sequenced on and off at different times to create a time domain signal sequence that is readable by the vehicle.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: July 24, 2018
    Assignee: Amazon Technologies, Inc.
    Inventors: Scott Patrick Boyd, Chengwu Cui, Sarah Graber, Barry James O'Brien, Joshua John Watson, Scott Michael Wilcox
  • Publication number: 20180170326
    Abstract: Methods and systems for controlling vehicle braking using a steering wheel mounted brake activation mechanism are disclosed herein. In an exemplary embodiment, a method for braking a vehicle includes providing the vehicle with a steering system including a steering wheel having a brake activation mechanism, a braking system, and a controller in electronic communication with the braking system and the brake activation mechanism, receiving a user input from the brake activation mechanism, calculating an amount of vehicle braking to apply based on the user input, and automatically controlling the vehicle braking system based on the calculated amount of vehicle braking.
    Type: Application
    Filed: December 16, 2016
    Publication date: June 21, 2018
    Inventors: Peggy Wang, Chengwu Duan, Jimmy Qi, Xiaowen Dai
  • Patent number: 10001199
    Abstract: A continuously variable transmission (CVT) (14) includes a drive pulley (18), a driven pulley (20), and an endless rotatable device (22) coupled between the drive and driven pulleys (18, 20). The drive pulley (18) and the driven pulley (20) each include pulley teeth (19T, 21T), and the endless rotatable device (22) includes device teeth (22T).
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: June 19, 2018
    Assignee: GM Global Technology Operations LLC
    Inventors: Chengwu Duan, Ying Huang
  • Publication number: 20180094710
    Abstract: A continuously variable transmission (CVT) (14) includes a drive pulley (18), a driven pulley (20), and an endless rotatable device (22) coupled between the drive and driven pulleys (18, 20). The drive pulley (18) and the driven pulley (20) each include pulley teeth (19T, 21T), and the endless rotatable device (22) includes device teeth (22T).
    Type: Application
    Filed: March 18, 2015
    Publication date: April 5, 2018
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Chengwu Duan, Ying Huang
  • Publication number: 20180080529
    Abstract: A powertrain has a continuously variable transmission including a shaft rotatable about an axis. The CVT further comprises a variator assembly that includes a pulley supported on the shaft. The pulley has a movable sheave with a ramp surface. The movable sheave is axially movable on the shaft. The variator assembly also includes an endless rotatable device frictionally engaged with the movable sheave. An actuator mechanism includes a wedge component supported on the shaft. The wedge component has a wedge surface that automatically engages the ramp surface when torque on the shaft is in a first direction. The wedge surface applies a wedge force on the ramp surface. The actuator mechanism further includes an actuator that is operatively connected to the movable sheave and is activatable to apply a force on the movable sheave.
    Type: Application
    Filed: December 1, 2017
    Publication date: March 22, 2018
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jian Yao, Chengwu Duan, Chunhao J. Lee, Derek F. Lahr, Farzad Samie
  • Publication number: 20180080530
    Abstract: The CVT includes a first pulley and a second pulley. Each of the first and second pulleys includes a first sheave, a second sheave, and a pulley axle operatively coupled between the first sheave and the second sheave. The first sheave can move relative to the second sheave along the pulley axle. Each of the first and second sheaves includes a sheave body and a plurality of sheave teeth protruding from the sheave body. The CVT further includes an endless rotatable device operatively coupled between the first and second pulleys. The endless rotatable device includes a plurality of pins interconnecting at least two of the links. The endless rotatable device further includes a plurality of device teeth each coupled to the pins.
    Type: Application
    Filed: November 26, 2014
    Publication date: March 22, 2018
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Chengwu Duan, Ying Huang
  • Publication number: 20180041668
    Abstract: In a portable electronic device having a digital camera function, focusing of an image may be accomplished by moving a movable image sensor assembly relative to a lens assembly that is affixed in a housing. An image sensor drive, such as a voice coil motor to move the movable image sensor assembly, may be positioned between the movable image sensor assembly and the lens assembly concentric with the lens assembly.
    Type: Application
    Filed: August 5, 2016
    Publication date: February 8, 2018
    Inventor: Chengwu Cui
  • Publication number: 20180041689
    Abstract: Focus self-calibration for a digital camera may be performed by moving a lens assembly of the digital camera over its travel range, and detecting travel limits of the lens assembly based on audio signal generated by the lens assembly reaching ends of the travel range. Digital-to-analog converter values corresponding to the lens assembly at the ends of the travel range may be used to create a camera focus profile.
    Type: Application
    Filed: August 5, 2016
    Publication date: February 8, 2018
    Inventor: Chengwu Cui
  • Patent number: 9888164
    Abstract: Focus self-calibration for a digital camera may be performed by moving a lens assembly of the digital camera over its travel range, and detecting travel limits of the lens assembly based on audio signal generated by the lens assembly reaching ends of the travel range. Digital-to-analog converter values corresponding to the lens assembly at the ends of the travel range may be used to create a camera focus profile.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: February 6, 2018
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: Chengwu Cui
  • Publication number: 20170363184
    Abstract: A continuously variable transmission (CVT comprises a shaft rotatable about an axis, and variator assembly, and an actuator mechanism. The variator assembly includes a pulley supported on the shaft and having a ramp surface, and an endless rotatable device frictionally engaged with the pulley. The ramp surface inclines in an axial direction along the axis toward the endless rotatable device. The CVT further comprises an actuator mechanism that includes a wedge component that has a wedge surface interfacing with the ramp surface, and a rotary piston operatively connected to the wedge component. The rotary piston defines a first fluid chamber pressurizable to apply a rotational force that provides relative motion between the ramp surface and the wedge surface resulting in a wedge force on the ramp surface and a clamping force of the endless rotatable device on the pulley.
    Type: Application
    Filed: June 16, 2016
    Publication date: December 21, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jian Yao, Chengwu Duan, Chunhao J. Lee, Derek F. Lahr
  • Publication number: 20170332021
    Abstract: Technologies are provided for IR illumination through background lighting sources. Some examples are directed to as IR light source such as IR LEDs being interspersed with visible light sources (e.g., LEDs) in a light guide of a display. IR LED configuration and/or light extraction features of the light guide may be selected such that a desired IR illumination pattern (e.g., a more centralized or a more uniform pattern) can be achieved. In other examples, an activation (turning on/off) of the IR LEDs may be used to generate the desired IR illumination pattern. The IR LEDs may be driven by the same circuitry as the visible light LEDs or by dedicated drive circuitry. Furthermore, the IR LEDs may be activated in an interlaced form with the visible light LEDs (e.g., selected frames in a stream of frames) to provide the IR illumination while displaying content.
    Type: Application
    Filed: May 13, 2016
    Publication date: November 16, 2017
    Applicant: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Chengwu Cui, Ying Zheng
  • Publication number: 20170314676
    Abstract: A vehicle includes a power plant, continuously variable transmission (CVT), drive wheels, sensors, and controller. The CVT achieves a fixed gear/positive engagement and friction drive modes, and includes an input member that receives input torque from the power plant, an output member, and a variator assembly having drive and driven variator pulleys. The pulleys are connected to each other via an endless rotatable drive element, and to a respective one of the input and output members. Pulley actuators change a CVT speed ratio. The controller calculates a relative slip of the pulleys using measured speeds and displacements from the sensors, reduces the relative slip until the relative slip is below a calibrated speed limit or within a calibrated speed range via actuator control signal to the pulley actuators, and commands the fixed gear/positive engagement mode via positive engagement control signals to the CVT until the relative slip reaches zero.
    Type: Application
    Filed: November 26, 2014
    Publication date: November 2, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Ying Huang, Chengwu Duan
  • Patent number: 9797321
    Abstract: An internal combustion engine includes a cylinder block that defines a cylinder and a cylinder head positioned relative to the cylinder block. A reciprocating piston is arranged inside the cylinder for compressing an air and fuel mixture at a geometric compression ratio of at least 10:1. A crankshaft is arranged in the cylinder block and rotated by the piston. An intake valve is operatively connected to the cylinder head and controls delivery of air to the cylinder for combustion therein. A mechanism provides late intake valve closing via constant peak lift of the intake valve over at least 5 degrees of crankshaft rotation. A multi-stage boosting system, having a turbocharger, a supercharger, and a continuously variable transmission for varying the supercharger's rotating speed, is regulated by a controller to selectively pressurize air being received from the ambient for delivery to the cylinder.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: October 24, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: David Sun, Yongsheng He, Zhimin Liu, Chengwu Duan
  • Publication number: 20170268669
    Abstract: A transmission variator includes a first pulley rotatably attached to an intermediate member of a geartrain, and a second pulley rotatably attached to an output member that is rotatably coupled to the driveline. The geartrain includes an input member, a planetary gear set, a first clutch, a second clutch and an intermediate member. The second clutch is a low drag clutch. The input member rotatably couples to the prime mover. A controller includes an instruction set that is executable to activate only the first clutch in response to a request to operate the driveline in a forward direction, and activate only the second clutch in response to a request to operate the driveline in a reverse direction.
    Type: Application
    Filed: March 18, 2016
    Publication date: September 21, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Chengwu Duan, Farzad Samie, Chunhao J. Lee, Jian Yao
  • Publication number: 20170226940
    Abstract: An internal combustion engine includes a cylinder block that defines a cylinder and a cylinder head positioned relative to the cylinder block. A reciprocating piston is arranged inside the cylinder for compressing an air and fuel mixture at a geometric compression ratio of at least 10:1. A crankshaft is arranged in the cylinder block and rotated by the piston. An intake valve is operatively connected to the cylinder head and controls delivery of air to the cylinder for combustion therein. A mechanism provides late intake valve closing via constant peak lift of the intake valve over at least 5 degrees of crankshaft rotation. A multi-stage boosting system, having a turbocharger, a supercharger, and a continuously variable transmission for varying the supercharger's rotating speed, is regulated by a controller to selectively pressurize air being received from the ambient for delivery to the cylinder.
    Type: Application
    Filed: February 9, 2016
    Publication date: August 10, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: David Sun, Yongsheng He, Zhimin Liu, Chengwu Duan
  • Patent number: 9696470
    Abstract: The description relates to capturing or sensing color images of scenes and information about the type of light (e.g., light source) that illuminated the scene. One example can include an image sensor manifest as an array of pixels. This example can also include a lens configured to focus an image from a scene on the array of pixels. The array of pixels can entail first pixels that are configured to sense the image and second pixels that are configured to capture information about lighting of the scene.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: July 4, 2017
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: Chengwu Cui