Patents by Inventor Chen-Nung Tseng

Chen-Nung Tseng 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).

  • Tread and handrail combination structure of a staircase
    Patent number: 6523310
    Abstract: The present invention relates to a tread and handrail combination structure of a staircase, including a support post, multiple helically laminated treads mounted on the support post, and multiple juxtaposed handrails. Each tread has an outer side provided with multiple combination holes, so that two ends of each handrail may pass through the combination holes to be fixed on the tread. Each tread has a bottom face provided with a support tube aligned with one combination hole. One end of each handrail is screwed on the tread, and the other end of each handrail is extended through the combination hole and the support tube of the mating tread, and through the combination hole of a next tread, so that any two adjacent treads may be combined rigidly and stably, without deformation.
    Type: Grant
    Filed: November 23, 2001
    Date of Patent: February 25, 2003
    Assignee: Taiwan Lounge Chair Industry Co., Ltd.
    Inventor: Chen-Nung Tseng
  • Tread of a staircase
    Patent number: D463039
    Type: Grant
    Filed: November 23, 2001
    Date of Patent: September 17, 2002
    Assignee: Taiwan Lounge Chair Industry Co., Ltd.
    Inventor: Chen-Nung Tseng