Patents by Inventor Qing-Yao Cai

Qing-Yao Cai 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).

  • Foldable frame assembly for suspending a machine above a ground surface
    Patent number: 7222865
    Abstract: A foldable frame assembly includes a base frame having a wheel-carrying end for mounting a wheel unit, a handgrip end, and an intermediate portion connected to a prop member so as to lift the base frame to a standing position. A tabletop has a front tabletop end pivoted to the intermediate portion for suspending a machine above the ground surface so as to enable a rear tabletop end to turn from a working position to a folded position. A bracing member has an anchoring end pivotally mounted on the wheel-carrying end, and a slidable end coupled with the rear tabletop end such that when the rear tabletop end is turned from the working position to the folded position, the slidable end is turned to be close to the intermediate portion. A rear locking unit is disposed to guard against movement of the slidable end.
    Type: Grant
    Filed: December 14, 2004
    Date of Patent: May 29, 2007
    Assignee: P & F Brother Industrial Corporation
    Inventors: Yu-Tien Chen, Qing-Yao Cai, Ya-Ling Hung
  • Foldable frame assembly for suspending a machine above a ground surface
    Publication number: 20060075943
    Abstract: A foldable frame assembly includes a base frame having a wheel-carrying end for mounting a wheel unit, a handgrip end, and an intermediate portion connected to a prop member so as to lift the base frame to a standing position. A tabletop has a front tabletop end pivoted to the intermediate portion for suspending a machine above the ground surface so as to enable a rear tabletop end to turn from a working position to a folded position. A bracing member has an anchoring end pivotally mounted on the wheel-carrying end, and a slidable end coupled with the rear tabletop end such that when the rear tabletop end is turned from the working position to the folded position, the slidable end is turned to be close to the intermediate portion. A rear locking unit is disposed to guard against movement of the slidable end.
    Type: Application
    Filed: December 14, 2004
    Publication date: April 13, 2006
    Applicant: P & F Brother Industrial Corporation
    Inventors: Yu-Tien Chen, Qing-Yao Cai, Ya-Ling Hung