Patents by Inventor Kie Hong Lao

Kie Hong Lao 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: 7444849
    Abstract: The present invention of pipe-bending apparatus includes: a frame, a bending shoe having gear teeth and concave groove on its outer circumference, a drive-gear, a gear rack having gear teeth and concave groove on one surface and gear teeth only on opposite surface. The frame pivotally supports bending shoe and drive-gear, positions gear rack engaging bending shoe and drive-gear. When using the pipe-bending apparatus, a straight pipe is laid inside the groove on gear rack with one pipe portion secured to bending shoe. Force is applied to turn drive gear, with all gear components engaged, gear rack and pipe transverse downwards and turns bending shoe. With one pipe portion secured to and turning with bending shoe, the pipe begins bending inside the concave groove on bending shoe.
    Type: Grant
    Filed: June 17, 2007
    Date of Patent: November 4, 2008
    Inventors: Paul Hsueh, Kie Hong Lao