Patents by Inventor Wu H. Chi

Wu H. Chi 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: 5437687
    Abstract: A wet process with no heating for continuous transfer pattern printing of a cellulose fabric web or its blends by using a corona-treated plastic film as a pattern carrier web and a dye admixed with a thickening agent containing water-soluble and alcohol-soluble hydroxypropyl cellulose or polyvinyl pyrrolidone as ink.
    Type: Grant
    Filed: September 19, 1994
    Date of Patent: August 1, 1995
    Assignee: Tofo Enterprise Co., Ltd.
    Inventors: Wu H. Chi, Jen-Wei Lin, Rudolf Lee
  • Patent number: 5433678
    Abstract: This invention relates to a device that uses the linear relationship between the electric current and the torque of the D.C. motor to simulate the effect of a weight stack of exercise machines. The motor produces a stable clockwise torque through the output shaft when a constant current is passing through it. When the user exerts a counterclockwise force which causes the motor to turn in a counterclockwise direction so that the electric current to the motor is controlled and maintained to deliver a stable torque from the motor against the counterclockwise force. Thus, the invention can replace conventional weight stacks used in exercise machines. The improvements and modifications made to the design have been focused on the problems of the system's inertia and friction during the cable rewinding on light loads.
    Type: Grant
    Filed: December 20, 1994
    Date of Patent: July 18, 1995
    Inventor: Wu H. Chi
  • Patent number: 5304104
    Abstract: A dynamic resistance device for an exerciser, comprises a bracket; an actuating device which is mounted within said bracket, which includes a motor and an output shaft; a winch which includes a winding drum and a cable, the winding drum is extended coaxially with a first rotating shaft and a second rotating shaft, as the winding drum rotates, the first and second rotating shaft will rotate consequently, one end of the cable is fixed on the winding drum, and the cable is wound within a spiral slot of the winding drum; a reduction device includes a first timing wheel and a second timing wheel, the first and second timing wheel are connected with a timing belt, the timing wheel is fixed on the output shaft of the motor, and the second timing wheel is fixed on the first rotating shaft which is connected to winding drum; a fairleader includes a stopping plate and a rubber ball, stopping plate is bridged on the top of bracket and has a slot thereof, the cable can pass through the slot freely, the diameter of the ru
    Type: Grant
    Filed: June 10, 1993
    Date of Patent: April 19, 1994
    Inventor: Wu H. Chi
  • Patent number: 5299996
    Abstract: A skiing simulator is provided which includes a load adjusting mechanism controlled by a control console for adjusting the resistance exerted by the load adjusting mechanism on a belt drive system disposed about a pair of guide tracks. A pair of foot pedals slidably mounted on the guide tracks, and a tension adjusting mechanism for adjusting the slack in the belt drive system is further provided. The control console is positioned on the skiing simulator to allow the user to change the resistance of the load adjusting mechanism without interrupting an exercise routine being performed.
    Type: Grant
    Filed: January 8, 1993
    Date of Patent: April 5, 1994
    Inventor: Wu H. Chi
  • Patent number: 5230677
    Abstract: A load adjusting device for the ski stimulator, particularly to the magnetic load adjusting device which is mounted in the rear housing of the ski stimulator, commprises two guiding rollers installed on the front housing in front of the guiding track respectively, three timing wheels mounted in the same plane interconnected with a timing belt, a magnetic braking mechanism, a spindle, a hub member, a bearing and a one-way bearing. Wherein the guiding roller can rotate clockwise and counterclockwise, and the timing wheels can only rotate one-way. The strap has at least one winding on the guiding roller to prevent any skip thereof.
    Type: Grant
    Filed: January 8, 1993
    Date of Patent: July 27, 1993
    Inventor: Wu H. Chi