Patents by Inventor Hsiang T. Cheng

Hsiang T. Cheng 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: 5136489
    Abstract: A projection lamp capable of being easily assembled to a screw socket and is both extensively and pivotally adjustable. The lamp includes a lamp housing having a conductive threaded cap an two opposite inner guiding rails, and annular member having two opposite wings capable of being slidably positioned along the guiding rails, and a lamp body pivotally connected under the annular member and having a reflective shade and a bulb electrically connected to the threaded cap.
    Type: Grant
    Filed: June 18, 1991
    Date of Patent: August 4, 1992
    Inventors: Hsiang T. Cheng, Gary Hsieh
  • Patent number: 4558261
    Abstract: An exclusive plug for artistic table lamps comprising main parts, namely a signal input line, two voltage output lines, a demagnetizing wire, a light-adjustment and switch-actuating operational circuit, and electric power indication light, of which the signal input line and two voltage output lines use a co-axial core cable, and a demagnetizing wire is provided around this three-core cable. The light adjustment and switch-actuation operational circuit is installed in the body of the plug, thus making the plug of this invention, when used in conjunction with a general artistic table lamp, convert the overall external surface of the common artistic table lamp stand into a touch induction surface. This device is completely applicable to the artistic table lamp, no matter whether the table lamp stand is made of a material of low induction coefficient like ceramics, pottery, marble, glass, wood, plastics etc., or even of metallic materials.
    Type: Grant
    Filed: February 14, 1984
    Date of Patent: December 10, 1985
    Inventor: Hsiang T. Cheng
  • Patent number: 4556824
    Abstract: A light adjustment and switch structure for artistic table lamps, applicable to a touch induction surface of the artistic table lamp socket, as the entire external surface of this socket is set as a touch induction surface made of a material having a good external appearance but with a low induction coefficient such as of ceramics, pottery, marble, glass, wood, plastics, acrylics, etc. . . . in order to make the design of the external appearance of the artistic table lamps not involve any serious considerations over factors such as the position and size of this switch.
    Type: Grant
    Filed: February 14, 1984
    Date of Patent: December 3, 1985
    Inventor: Hsiang T. Cheng