Patents by Inventor Chen Wen-tsung

Chen Wen-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).

  • Patent number: 4974135
    Abstract: A desk lamp, which includes a lamp shade structure comprised of a lamp shade, a sleeve set in the lamp shade, an adjusting rod having a thread portion on its upper end, and a lamp socket; a lamp bracket being to secure the lamp shade structure to a lamp stand and comprised of two parallel rods and upper, intermediate and lower union swivels; and a pendulum having stepped holes therethrough for the setting therein of screw rod, insulator ring and tubes, and lock nuts. Through the control of the sleeve, the lamp shade is allowed to rotate on the lamp bracket. Through the arrangement of the union swivels, the two parallel rods of the lamp bracket form to separate conductive circuits for conducting electricity. Through the lower union swivel, the lamp bracket is permitted to rotate on the lamp stand.
    Type: Grant
    Filed: April 3, 1990
    Date of Patent: November 27, 1990
    Inventor: Chen Wen-tsung