Patents by Inventor Hang Fung Chang

Hang Fung 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).

  • Publication number: 20180320775
    Abstract: An actuator includes a motor and a gearbox connected with the motor. The gearbox has a lower housing, a gear received in the lower housing, and a cover disposed at one end of the lower housing. The lower housing has a support shaft supporting the gear for rotation relative to the lower housing. The support shaft is hollow. A core shaft is inserted into the support shaft. The core shaft is made of a metal material and the support shaft is made of a plastic material.
    Type: Application
    Filed: July 3, 2018
    Publication date: November 8, 2018
    Inventors: Harry Hang Fung CHANG, Wei Xing MAO, Yong Jun YANG, Ming YANG
  • Publication number: 20160369883
    Abstract: An actuator includes a motor and a gearbox connected with the motor. The gearbox has a lower housing, a gear received in the lower housing, and a cover disposed at one end of the lower housing. The lower housing has a support shaft supporting the gear for rotation relative to the lower housing. The support shaft is hollow. A core shaft is inserted into the support shaft. The core shaft is made of a metal material and the support shaft is made of a plastic material.
    Type: Application
    Filed: June 16, 2016
    Publication date: December 22, 2016
    Inventors: Harry Hang Fung CHANG, Wei Xing MAO, Yong Jun YANG, Ming YANG
  • Patent number: 9403505
    Abstract: A seat belt presenter for moving a tongue plate of a seat belt system to a desired position includes a transmission mechanism for moving the tongue plate and an electric motor for driving the transmission mechanism. The motor includes a stator and a rotor rotatably mounted to the stator. The rotor includes a motor shaft, a commutator fixed to the motor shaft, a rotor core fixed to the motor shaft and rotor windings wound about teeth of the rotor core and electrically connected to segments of the commutator, the rotor windings comprises a plurality of winding units. Each winding unit includes at least two coils, the coils of each winding unit being wound about the same teeth and electrically connected to a same pair of segments, in parallel.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: August 2, 2016
    Assignee: JOHNSON ELECTRIC S.A.
    Inventors: Hang Fung Chang, Hang Cheong Ma, Daniel Ming Hong Wong
  • Patent number: 9272686
    Abstract: A buckle assembly for a seat belt system includes a belt buckle, a transmission mechanism arranged to move the belt buckle from a first position to a second position, and an electric motor for driving the transmission mechanism. The motor includes a stator and a rotor rotatably mounted to the stator. The rotor includes a motor shaft, a commutator fixed to the motor shaft, a rotor core fixed to the motor shaft and rotor windings wound about teeth of the rotor core and electrically connected to segments of the commutator. The rotor windings include a plurality of winding units. Each winding unit includes at least two coils, the coils of each winding unit being wound about the same teeth and electrically connected to a same pair of segments, in parallel.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: March 1, 2016
    Assignee: Johnson Electric S.A.
    Inventors: Hang Fung Chang, Hang Cheong Ma, Daniel Ming Hong Wong
  • Patent number: 8783723
    Abstract: A belt winder for a safety belt system includes a belt reel for tightening or loosing the safety belt, and an electric motor for driving the belt reel. The motor includes a stator and a rotor rotatably mounted to the stator. The rotor includes an motor shaft, a commutator fixed to the motor shaft, a rotor core fixed to the motor shaft and rotor windings wound about teeth of the rotor core and electrically connected to segments of the commutator. The rotor windings include a plurality of winding units. Each winding unit includes at least two coils, the coils of each winding unit being wound about the same teeth and electrically connected to a same pair of segments in parallel. A safety belt system incorporating the belt winder is also provided.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: July 22, 2014
    Assignee: Johnson Electric S.A.
    Inventors: Hang Fung Chang, Hang Cheong Ma, Daniel Ming Hong Wong
  • Publication number: 20110031835
    Abstract: An automated manual transmission comprises a hydraulic pump and a motor for driving the hydraulic pump. The motor comprises a stator and a rotor rotatably mounted to the stator, the stator comprising a housing and a motor end cap fixed to the housing, the rotor comprising a rotatable shaft rotatably supported by a bearing which is installed to the end cap. The bearing comprises an inner race, an outer race, rollers disposed between the inner race and the outer race, and roll holder for holding the rollers. A ring-shaped seal member is arranged at one axial end of the bearing to seal the gap between the inner race and outer race. The end cap is molded at outer peripheral surface of the outer race.
    Type: Application
    Filed: August 5, 2010
    Publication date: February 10, 2011
    Inventors: Harry Hang Fung CHANG, Yiu Leung Man, Yao Fei Li