Patents by Inventor Rick T. K. Choy

Rick T. K. Choy 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).

  • Treadmill with optical position sensing
    Patent number: 6135924
    Abstract: An exercise treadmill machine is provided in which an optical sensor monitors the position of a user on the treadmill and automatically varies the speed of the treadmill to keep the user near a predetermined position on the treadmill's endless belt. The optical sensor preferably includes an infrared (IR) emitter and an IR detector which are located in or near the treadmill control panel that also houses a preprogrammed microprocessor. The microprocessor controls the speed of the belt as required to adjust for variations in the position of the user.
    Type: Grant
    Filed: April 7, 1998
    Date of Patent: October 24, 2000
    Assignee: Unisen, Inc.
    Inventors: Duane Carol Gibbs, Craig I. Garza, Rick T. K. Choy, Edwin J. Yagerlener