Patents by Inventor Hsiau C. Hsing

Hsiau C. Hsing 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).

  • Pull roller mount for sewing machines
    Patent number: 4854254
    Abstract: A device for tensioning material to be sewn includes a driven pull roller, a connecting plate for shifting the pull roller upwardly when the presser foot of a sewing machine is raised, and a cammed guide track and follower support for the pull roller that causes the pull roller to retract outwardly with respect to the presser foot when the pull roller is shifted upwardly. Also provided is a handle for retracting the pull roller assembly independent of the motion of the presser foot.
    Type: Grant
    Filed: March 31, 1987
    Date of Patent: August 8, 1989
    Inventor: Hsiau C. Hsing