Patents by Inventor Wen-Chun Chen

Wen-Chun 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).

  • CONNECTING DEVICE FOR A GARDENING TOOL
    Publication number: 20020158425
    Abstract: A connecting device for gardening tool has a locking sleeve with a screw bolt and a tool head connector firmly secured in the locking sleeve by inserting the cubic part of the connector into the cubic portion of the locking sleeve and screwing the screw bolt on the locking sleeve. The connecting device allows gardening tool heads to be changed easily and conveniently to satisfy different requirements.
    Type: Application
    Filed: April 30, 2001
    Publication date: October 31, 2002
    Inventor: Wen-Chun Chen
  • Replaceable head for an extension tool
    Patent number: 6454330
    Abstract: A Placeable extension tool in this invention is composed of a tool connector (10), a tool head (20), a trigger block (30) and an actuating device (40). The trigger block (30) is a driving element pivotally secured inside the tool connector (10) to control the movement of the tool head (20) but not inseparable with the tool head (20). Thereby, the tool head (20) can be quickly and easily replaced to increase the versatility of the extension tool.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: September 24, 2002
    Inventor: Wen-Chun Chen