Patents by Inventor Ping-Nan Chuang

Ping-Nan Chuang 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).

  • Publication number: 20040040422
    Abstract: A sleeve form spanner comprises a spanner body and a connecting unit. One end of the spanner body has a handle for being held by a user and another end thereof is a connecting head. One lateral side of the connecting head is formed with a pivotal end. The pivotal end is concave to be as a pivotal portion for connecting the connecting unit. The connecting unit is a block body. A connecting rod and a plurality of connecting shafts are protruded from the connecting unit. The connecting shafts have various configurations for suiting various sleeves to be connected; and the connecting rod is engaged to the pivotal portion of the pivotal end. Thereby, the user prepares only one spanner body, while a variety of tools can be used by the spanner.
    Type: Application
    Filed: September 3, 2002
    Publication date: March 4, 2004
    Inventor: Ping-Nan Chuang