Patents by Inventor Chuan Yi Wen

Chuan Yi Wen 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).

  • Pipe lifting apparatus and method
    Patent number: 6568731
    Abstract: A pipe lifting apparatus and method utilizes gripper arms (A) having upwardly diverging links (B) pivotally connected to an upwardly extending operator member (C) for receiving a lifting attachment and for moving a stirrup (D) from side to side to lock and unlock stops (E) for fixing the gripper arms and in unlocked position for a next pipe lifting operation. Auxiliary gripping members (F) are provided in opposed relation on each of the gripper arms for adjusting the effective gripping action afforded by the gripping arms to accommodate multiple size pipes.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: May 27, 2003
    Inventors: William J. Alexander, III, Charles Marion Moore, Chuan Yi Wen
  • Pipe lifting apparatus and method
    Publication number: 20020135192
    Abstract: A pipe lifting apparatus and method utilizes gripper arms (A) having upwardly diverging links (B) pivotally connected to an upwardly extending operator member (C) for receiving a lifting attachment and for moving a stirrup (D) from side to side to lock and unlock stops (E) for fixing the gripper arms and in unlocked position for a next pipe lifting operation. Auxiliary gripping members (F) are provided in opposed relation on each of the gripper arms for adjusting the effective gripping action afforded by the gripping arms to accommodate multiple size pipes.
    Type: Application
    Filed: March 22, 2001
    Publication date: September 26, 2002
    Inventors: William J. Alexander,, Charles Marion Moore, Chuan Yi Wen