Patents by Inventor Paul W. Kao

Paul W. Kao 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).

  • Bevel pipe winder
    Patent number: 3964522
    Abstract: In the manufacture of prestressed concrete pipe, wire is wound under tension around the concrete body of the pipe and secured thereto. In accomplishing this the concrete pipe is mounted on a turntable for rotaton about the longitudinal axis of the pipe and wire under tension is wrapped thereon in a helical fashion from one end to the other.
    Type: Grant
    Filed: September 20, 1971
    Date of Patent: June 22, 1976
    Assignee: United States Pipe and Foundry Company
    Inventors: Paul W. Kao, Homer C. Lamborn
  • Bevel pipe winding method and product
    Patent number: 3964521
    Abstract: In the manufacture of prestressed concrete pipe, wire is wound under tension around the concrete body of the pipe and secured thereto. In accomplishing this the concrete pipe is mounted on a turntable for rotation about the longitudinal axis of the pipe and wire under tension is wrapped thereon in a helical fashion from one end to the other.
    Type: Grant
    Filed: September 16, 1974
    Date of Patent: June 22, 1976
    Assignee: United States Pipe and Foundry Company
    Inventors: Paul W. Kao, Homer C. Lamborn