Patents by Inventor Cheu Fa Chen

Cheu Fa Chen 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).

  • Stapler having an adjustable nailing stroke
    Patent number: 6024267
    Abstract: A stapler includes a nose portion for engaging with a work piece and includes a safety. A sleeve is slidably engaged on the nose portion. A guide is secured to the safety and a shaft rotatably secured to the guide. A rod is secured to the sleeve and has an outer thread threadedly engaged with the shaft for allowing the sleeve and the rod to be adjusted and moved relative to the shaft and the guide when the shaft is rotated relative to the rod. A control ferrule is rotatably engaged with the guide and secured to the shaft for rotating the shaft relative to the rod and for adjusting the sleeve relative to the nose portion, such that the nose portion may he adjusted relative to the work piece.
    Type: Grant
    Filed: April 21, 1998
    Date of Patent: February 15, 2000
    Inventor: Cheu Fa Chen