Patents by Inventor David Tai Wai CHAN

David Tai Wai CHAN 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).

  • Wearable power assistive device for helping a user to move their hand
    Patent number: 8574178
    Abstract: A rehabilitation system for training hand movement of a user, the system comprising: a platform to be attached to the hand of the user; a plurality of finger assemblies operatively connected to the platform, each finger assembly having: a motor, a proximal follower assembly for a metacarpophalangeal (MCP) joint having a proximal rail guide operatively connected to the motor, and an intermediate follower assembly for a proximal interphalangeal (PIP) joint having an intermediate rail guide operatively connected to the proximal follower assembly; wherein a knuckle joint indicator of the proximal rail guide corresponds to a first virtual center and knuckle joint indicator of the intermediate rail guide corresponds to a second virtual center, the alignment of the knuckle joint indicators to the virtual centers enable motion of the finger to be controlled and maintain rotational axes of the finger about each virtual center when the proximal and intermediate follower assemblies are actuated by the motor.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: November 5, 2013
    Assignee: The Hong Kong Polytechnic University
    Inventors: Kai Yu Tong, Peter Man Kit Pang, Mo Chen, Sze Kit Ho, Hongfu Zhou, David Tai Wai Chan
  • WEARABLE POWER ASSISTIVE DEVICE FOR HELPING A USER TO MOVE THEIR HAND
    Publication number: 20100305717
    Abstract: A rehabilitation system (10) for training hand movement of a user, the system comprising: a platform (24) to be attached to the hand of the user; a plurality of finger assemblies (71) operatively connected to the platform (24), each finger assembly (71) having: a motor (12), a proximal follower assembly (13) for a metacarpophalangeal (MCP) joint having a proximal rail guide (14) operatively connected to the motor (12), and an intermediate follower assembly (16) for a proximal interphalangeal (PIP) joint having an intermediate rail guide (17) operatively connected to the proximal follower assembly (13); wherein a knuckle joint indicator (22) of the proximal rail guide (14) corresponds to a first virtual center (30) and knuckle joint indicator (25) of the intermediate rail guide (17) corresponds to a second virtual center (31), the alignment of the knuckle joint indicators (22, 25) to the virtual centers (30, 31) enable motion of the finger to be controlled and maintain rotational axes of the finger about each
    Type: Application
    Filed: May 26, 2009
    Publication date: December 2, 2010
    Inventors: Kai Yu TONG, Peter Man Kit PANG, Mo CHEN, Sze Kit HO, Hongfu ZHOU, David Tai Wai CHAN