Patents by Inventor Kok-Meng Lee

Kok-Meng Lee 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: 11251689
    Abstract: A magnetically reconfigurable robot joint motor includes a coil stator, a permanent magnet rotor and a magnetic reconfiguration unit. The magnetic reconfiguration unit is arranged around an outer periphery of the permanent magnet rotor, and a coil connected to a control circuit is wound on an outer layer of the magnetic reconfiguration unit. When it is necessary to execute low rotation speed or zero rotation speed operating conditions, the control circuit inputs current pulses of different strengths, so that the magnetic reconfiguration unit obtains permanent magnetization of corresponding degree, and generates a magnetic field which acts together with a magnetic field of the permanent magnet rotor, so as to maintain a torque required for output.
    Type: Grant
    Filed: April 28, 2019
    Date of Patent: February 15, 2022
    Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Kun Bai, Lang Zhu, Mi Yuan, Kok-Meng Lee
  • Publication number: 20200343799
    Abstract: A magnetically reconfigurable robot joint motor includes a coil stator, a permanent magnet rotor and a magnetic reconfiguration unit. The magnetic reconfiguration unit is arranged around an outer periphery of the permanent magnet rotor, and a coil connected to a control circuit is wound on an outer layer of the magnetic reconfiguration unit. When it is necessary to execute low rotation speed or zero rotation speed operating conditions, the control circuit inputs current pulses of different strengths, so that the magnetic reconfiguration unit obtains permanent magnetization of corresponding degree, and generates a magnetic field which acts together with a magnetic field of the permanent magnet rotor, so as to maintain a torque required for output.
    Type: Application
    Filed: April 28, 2019
    Publication date: October 29, 2020
    Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Kun BAI, Lang ZHU, Mi YUAN, Kok-Meng LEE
  • Patent number: 10688653
    Abstract: A wearable intelligent exoskeleton seat apparatus includes a thigh mechanism, a knee joint mechanism and a shank mechanism, the knee joint mechanism is fixedly coupled to the shank mechanism and the thigh mechanism respectively; the knee joint mechanism includes a knee joint support rod, a motor frame, a motor, a movable base, a flexible spring piece, ratchet teeth, a ratchet tooth shaft, a ratchet wheel, a ratchet wheel shaft and a shank connecting base; the knee joint support rod is fixedly connected with the thigh mechanism; the motor is mounted on the upper end of the knee joint support rod through the motor frame; the ratchet teeth is rotatably mounted to the knee joint support rod via the ratchet tooth shaft; the ratchet wheel is rotabaly mounted to the knee joint support rod via the ratchet wheel shaft; the ratchet teeth and the ratchet wheel are mounted directly opposite to each other.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: June 23, 2020
    Inventors: Donghai Wang, Kok-Meng Lee
  • Publication number: 20200061803
    Abstract: A wearable intelligent exoskeleton seat apparatus includes a thigh mechanism, a knee joint mechanism and a shank mechanism, the knee joint mechanism is fixedly coupled to the shank mechanism and the thigh mechanism respectively; the knee joint mechanism includes a knee joint support rod, a motor frame, a motor, a movable base, a flexible spring piece, ratchet teeth, a ratchet tooth shaft, a ratchet wheel, a ratchet wheel shaft and a shank connecting base; the knee joint support rod is fixedly connected with the thigh mechanism; the motor is mounted on the upper end of the knee joint support rod through the motor frame; the ratchet teeth is rotatably mounted to the knee joint support rod via the ratchet tooth shaft; the ratchet wheel is rotabaly mounted to the knee joint support rod via the ratchet wheel shaft; the ratchet teeth and the ratchet wheel are mounted directly opposite to each other.
    Type: Application
    Filed: January 14, 2019
    Publication date: February 27, 2020
    Inventors: Donghai WANG, Kok-Meng LEE
  • Publication number: 20100264756
    Abstract: A multi-DOF system including a bearing for centering a first body relative a second body, and a work piece surface tiltable via the first body, wherein the bearing comprises a magnetically levitated bearing.
    Type: Application
    Filed: October 29, 2009
    Publication date: October 21, 2010
    Applicant: Georgia Tech Research Corporation
    Inventors: Kok-Meng Lee, Hungsun Son, Jong Kweon Park, Kun Bai
  • Publication number: 20100190426
    Abstract: This document relates to live bird shackle transfer. In one embodiment, a live bird transfer system includes a perch conveyor, configured to transport a live bird on a perch mechanism from a distal end to a proximal end of the perch conveyor, and a shackle line, including a pallet assembly including a trolley supporting a pallet and a star-wheel mechanism configured to position the trolley such that the pallet is aligned with the proximal end of the perch conveyor during transfer of the live bird from the perch mechanism to the pallet. In another embodiment, a live bird transfer system includes a perch conveyor configured to transport a live bird from a distal end to a proximal end of the perch conveyor; a body-grasper at the proximal end of the perch conveyor; and virtual exit lighting positioned at the proximal end of the perch conveyor and above the body-grasper.
    Type: Application
    Filed: January 26, 2010
    Publication date: July 29, 2010
    Inventors: Kok-Meng Lee, Billy Poindexter, II, A. Bruce Webster, Shaohui Foong, Chih-Hsing Liu
  • Patent number: 7134956
    Abstract: A system and method for transferring live objects, such as chickens, to a shackle line are presented. The system and method include introducing a plurality of live objects to a singulator. The singulator isolates the individual live objects and places them in a pallet on a conveyor. The system may detect and remove cadavers from amongst the live objects. The conveyor leads the live objects to a grasper. The grasper positions the legs of the live objects so that a shackler can secure the legs of the live objects with a shackle. The live objects and the shackle are then inverted and passed on to a shackle line. The shackle line may be a kill line buffer or a kill line.
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: November 14, 2006
    Assignee: Georgia Tech Research Corporation
    Inventor: Kok-Meng Lee
  • Publication number: 20040067725
    Abstract: A system and method for transferring live objects, such as chickens, to a shackle line are presented. The system and method include introducing a plurality of live objects to a singulator. The singulator isolates the individual live objects and places them in a pallet on a conveyor. The system may detect and remove cadavers from amongst the live objects. The conveyor leads the live objects to a grasper. The grasper positions the legs of the live objects so that a shackler can secure the legs of the live objects with a shackle. The live objects and the shackle are then inverted and passed on to a shackle line. The shackle line may be a kill line buffer or a kill line.
    Type: Application
    Filed: July 11, 2003
    Publication date: April 8, 2004
    Inventor: Kok-Meng Lee
  • Patent number: 6623346
    Abstract: A system and method for transferring live objects, such as chickens, to a shackle line are presented. The system and method include introducing a plurality of live objects to a singulator. The singulator isolates the individual live objects and places them in a pallet on a conveyor. The system may detect and remove cadavers from amongst the live objects. The conveyor leads the live objects to a grasper. The grasper positions the legs of the live objects so that a shackler can secure the legs of the live objects with a shackle. The live objects and the shackle are then inverted and passed on to a shackle line. The shackle line may be a kill line buffer or a kill line.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: September 23, 2003
    Assignee: Georgia Tech Research Corporation
    Inventor: Kok-Meng Lee
  • Publication number: 20020062793
    Abstract: A system and method for transferring live objects, such as chickens, to a shackle line are presented. The system and method include introducing a plurality of live objects to a singulator. The singulator isolates the individual live objects and places them in a pallet on a conveyor. The system may detect and remove cadavers from amongst the live objects. The conveyor leads the live objects to a grasper. The grasper positions the legs of the live objects so that a shackler can secure the legs of the live objects with a shackle. The live objects and the shackle are then inverted and passed on to a shackle line. The shackle line may be a kill line buffer or a kill line.
    Type: Application
    Filed: December 22, 2000
    Publication date: May 30, 2002
    Inventor: Kok-Meng Lee
  • Patent number: 6188484
    Abstract: An apparatus for directly measuring an angular displacement of an actuator arm relative to a reference position is disclosed, wherein the actuator arm is rotatable about a fixed axis. The apparatus includes a reflection-type diffraction grating, a light source, a transmission-type diffraction grating and a detector. The reflection-type diffraction grating is mounted on the actuator arm. The light source emits a generally rectangularly-shaped laser beam that is aligned to strike the reflection-type diffraction grating to produce reflected beams. The transmission-type diffraction grating, through which the reflected beams pass, causes the reflected beams to converge and form an interference pattern. The detector is positioned to detect the interference pattern and generate a signal representative of the angular displacement of the actuator arm relative to the reference position.
    Type: Grant
    Filed: October 29, 1998
    Date of Patent: February 13, 2001
    Assignee: Maxtor Corporation
    Inventors: Kok-Meng Lee, Harry Douglas Garner, Jr., Lin Guo
  • Patent number: 5416392
    Abstract: A spherical motor (10) provides smooth isotropic motion. The spherical motor (10) has a spherical stator (12) surrounding a spherical rotor (18) . A motor shaft (24) is mounted to the rotor (18), or alternatively, to the stator (12) for performing work in isotropic motion. A grid pattern is situated to move substantially concentrically with the rotor (18) and in conjunction with the motor shaft (24). A vision system (80) monitors the grid pattern (42) and determines in real time the position of the motor shaft (24). The vision system (80) has at least one image sensor (44) positioned on the stator (12) and a computer system (82) for processing data independent of a remote host computer (122). Further, a motor controller (191) using a motor control algorithm (200) my be interfaced with the vision system (80) to thereby derive a motor control system (190) for controlling the spherical motor (10) based upon the rotor orientation information retrieved by the vision system (80).
    Type: Grant
    Filed: September 10, 1993
    Date of Patent: May 16, 1995
    Assignee: Georgia Tech Research Corporation
    Inventors: Kok-Meng Lee, Robert S. Blenis, Tsang-Long Pao
  • Patent number: 5410232
    Abstract: A spherical motor (10) provides smooth isotropic motion. The spherical motor (10) has a spherical stator (12) surrounding a spherical rotor (18). A motor shaft (24) is mounted to the rotor (18), or alternatively, to the stator (12) for performing work in isotropic motion. A grid pattern is situated to move substantially concentrically with the rotor (18) and in conjunction with the motor shaft (24). A vision system (80) monitors the grid pattern (42) and determines in real time the position of the motor shaft (24). The vision system (80) has at least one image sensor (44) positioned on the stator (12) and a computer system (82) for processing data independent of a remote host computer (122). Further, a motor controller (191) using a motor control algorithm (200) may be interfaced with the vision system (80) to thereby derive a motor control system (190) for controlling the spherical motor (10) based upon the rotor orientation information retrieved by the vision system (80).
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: April 25, 1995
    Assignee: Georgia Tech Research Corporation
    Inventor: Kok-Meng Lee
  • Patent number: 5402049
    Abstract: A spherical motor (10) provides smooth isotropic motion. The spherical motor (10) has a spherical stator (12) surrounding a spherical rotor (18). A motor shaft (24) is mounted to the rotor (18), or alternatively, to the stator (12) for performing work in isotropic motion. A grid pattern is situated to move substantially concentrically with the rotor (18) and in conjunction with the motor shaft (24). A vision system (80) monitors the grid pattern (42) and determines in real time the position of the motor shaft (24). The vision system (80) has at least one image sensor (44) positioned on the stator (12) and a computer system (82) for processing data independent of a remote host computer (122). Further, a motor controller (191) using a motor control algorithm (200) may be interfaced with the vision system (80) to thereby derive a motor control system (190) for controlling the spherical motor (10) based upon the rotor orientation information retrieved by the vision system (80).
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: March 28, 1995
    Assignee: Georgia Tech Research Corporation
    Inventors: Kok-Meng Lee, Robert S. Blenis, Tsang-Long Pao
  • Patent number: 5319577
    Abstract: A spherical motor (10) provides smooth isotropic motion. The spherical motor (10) has a spherical stator (12) surrounding a spherical rotor (18). A motor shaft (24) is mounted to the rotor (18), or alternatively, to the stator (12) for performing work in isotropic motion. A grid pattern is situated to move substantially concentrically with the rotor (18) and in conjunction with the motor shaft (24). A vision system (80) monitors the grid pattern (42) and determines in real time the position of the motor shaft (24). The vision system (80) has at least one image sensor (44) positioned on the stator (12) and a computer system (82) for processing data independent of a remote host computer (122). Further, a motor controller (191) using a motor control algorithm (200) may be interfaced with the vision system (80) to thereby derive a motor control system (190) for controlling the spherical motor (10) based upon the rotor orientation information retrieved by the vision system (80).
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: June 7, 1994
    Assignee: Georgia Tech Research Corporation
    Inventor: Kok-Meng Lee
  • Patent number: 5146340
    Abstract: An image reading system observes a field of view and forms electrical signals indicating the presence of objects within the field as to location and movement. After ascertaining the area of the field in which an object is located, the system is speeded up by reading signals outside the area at a high rate of speed and those inside the area at a normal rate of speed.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: September 8, 1992
    Assignee: Georgia Tech Research Corporation
    Inventors: Stephen L. Dickerson, Kok-Meng Lee