Patents by Inventor Lu Chieh-Tsung

Lu Chieh-Tsung 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).

  • Pillow and backrest of chair
    Patent number: 5873632
    Abstract: A chair is composed of a seat, a backrest, a headrest, and a swiveling device located between the backrest and the headrest so as to cause the backrest and the headrest to swivel relative to each other in response to the sitting posture of a person who is seated on the seat of the chair. The swiveling device has a tubular member, two volute elastic plate members, a connection rod, and a plurality of elastic members.
    Type: Grant
    Filed: April 6, 1998
    Date of Patent: February 23, 1999
    Assignee: Aur Hann Co., Ltd.
    Inventor: Lu Chieh-Tsung