Patents by Inventor Helge Sten Indreland

Helge Sten Indreland 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).

  • Method and tool for installing new pipe underground
    Patent number: 8596915
    Abstract: A pipe is installed between a pointed front section and a rear section of a tool, and the rear section is subjected to a drive force in the longitudinal direction, so that the pointed section and the pipe is pushed into loosely packed materials. In response to an inadvertent hindrance in the loosely packed materials, the tool and the pipe connected thereto is pulled back by exerting a tractive force on a line connected to the pointed front section and running through the pipe and rear section.
    Type: Grant
    Filed: November 20, 2008
    Date of Patent: December 3, 2013
    Inventor: Helge Sten Indreland