Patents by Inventor Wei C. Ling

Wei C. Ling 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).

  • Arrangement for height adjustment
    Patent number: 5046781
    Abstract: The applications of the arrangement of the present invention includes chairs, tables and shelves. Disclosed is a chair having a seat of adjustable height. The arrangement includes a first member or seat having a contact surface for abutting a second member or pair of uprights and means for pivoting the first member with respect to the second member, whereby pivoting first member disjoins the contact surface of the first member from the second member enabling the first member to move longitudinal position with respect to the second member.
    Type: Grant
    Filed: December 7, 1989
    Date of Patent: September 10, 1991
    Inventor: Wei C. Ling