Patents by Inventor Ruey-Chang Chuang

Ruey-Chang Chuang 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: 5356196
    Abstract: The present disclosure relates to a walking chair, more particularly to a walking chair including two sets of movable joints and a set of extensible support. The walking chair of the present invention mainly comprises an H-shaped support frame in which two parallel sliding columns are movably inserted, a lower protective ring which is provided with universal casters and is attached at its rear portion to the H-shaped support frame with a movable joint which allows the lower protective ring to be folded down toward the H-shaped support frame, and an upper protective ring which is attached at its rear portion to top ends of the two sliding columns with a movable joint which allows the upper protective ring to be folded upward toward the H-shaped support frame. The upper protective ring may have different seat accessories attached thereto to meet different requirements or conditions.
    Type: Grant
    Filed: June 8, 1993
    Date of Patent: October 18, 1994
    Inventor: Ruey-Chang Chuang
  • Patent number: D338274
    Type: Grant
    Filed: February 1, 1991
    Date of Patent: August 10, 1993
    Inventor: Ruey-Chang Chuang
  • Patent number: D341109
    Type: Grant
    Filed: January 2, 1992
    Date of Patent: November 9, 1993
    Inventor: Ruey-Chang Chuang
  • Patent number: D344640
    Type: Grant
    Filed: January 2, 1992
    Date of Patent: March 1, 1994
    Inventor: Ruey-Chang Chuang
  • Patent number: D367422
    Type: Grant
    Filed: August 24, 1994
    Date of Patent: February 27, 1996
    Assignee: Taiwan Us Baby Articles Co., Ltd.
    Inventor: Ruey-Chang Chuang