Patents by Inventor Wen-Tsung Liang

Wen-Tsung Liang 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: 5839161
    Abstract: A suction pipe assembly for a vacuum cleaner includes a suction pipe body and a brush member. The suction pipe body is provided with a distal open end portion. The brush member includes a brush base which has a generally U-shaped cross section, a rear section that straddles the distal open end portion of the pipe body and that has opposite lateral side portions pivoted respectively to two diametrically opposite positions of the distal open end portion of the pipe body, and a front section with a distal front end face. The brush member further includes a plurality of bristles provided on the front end face of the front section of the brush base. The brush base is pivotable with respect to the distal open end portion of the pipe body between a position of use, wherein the front section of the brush base extends frontwardly relative to the distal open end portion of the pipe body, and a storing position, wherein the front section of the brush base straddles the pipe body.
    Type: Grant
    Filed: May 28, 1997
    Date of Patent: November 24, 1998
    Assignee: Choung Cheng Industrial Co., Ltd.
    Inventor: Wen-Tsung Liang