Patents by Inventor Siu B. Wut

Siu B. Wut 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: 5408764
    Abstract: Motion activated illuminating footwear includes a heel having a transparent portion; and a light module positioned within the heel, the light module including two light emitting diodes (LEDs) for providing illumination, the LEDs being located so as to be visible exteriorly of the heel through the transparent portion thereof and the LEDs having positive and negative terminals, a printed circuit board supporting the LEDs, a battery for supplying power to the LEDs, leads connecting the positive terminals of the LEDs to the battery, a switch which alternately provides contact between the battery and the negative terminal of the LEDs upon movement of the footwear, the switch including a coil extension spring electrically connected with the negative terminals of the LEDs, for intermittently contacting the battery as a result of movement of the footwear, the spring having a first end supported by the printed circuit board and being electrically connected by the printed circuit board to the negative terminals of the
    Type: Grant
    Filed: February 1, 1994
    Date of Patent: April 25, 1995
    Assignee: East Asia Services Ltd.
    Inventor: Siu B. Wut