Patents by Inventor Cherng-Yuh Sheng

Cherng-Yuh Sheng 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).

  • Link lifting gear for a baby-walker
    Patent number: 6224077
    Abstract: A baby walker having a chassis, a bracket table, and a lifting gear for elevating the bracket table relative to the chassis. The lifting gear includes two pairs of parallel links, each having one end pivotally attached by a shaft bin to the chassis and an opposite end pivotally attached by a shaft bin to the bracket table. Each of the pair of parallel links includes a first link, a second link, a secured wedge piece fixed onto the first link, a slide having a rod slot slidably affixed to the second link and a locking gear positioned between the first and second links so as to control a distance between the first and second links so as to control a height of the bracket table with respect to the chassis.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: May 1, 2001
    Inventor: Cherng-Yuh Sheng