Patents by Inventor Yoon Sick Chai

Yoon Sick Chai 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).

  • Baby carriage convertible to a safety car seat
    Patent number: 5360221
    Abstract: A baby carriage serving as a safety seat. The carriage comprises a body assembly including seat, back, foot rest and side plates, a wheel assembly pivotally mounted on the body assembly and adapted to be folded back, a handle assembly pivotally mounted on the body assembly and adapted to be rotated into a horizontal position, and a locking assembly for locking and releasing the wheel assembly. When the carriage is converted into a safety seat, the wheel assembly is released from the locking assembly and folded back, and the handle assembly is rotated into a horizontal position to be used as an arm rest plate.
    Type: Grant
    Filed: December 27, 1993
    Date of Patent: November 1, 1994
    Assignee: Ok J. Kim
    Inventor: Yoon Sick Chai