Patents Assigned to LLAJ, Inc.
  • Patent number: 9039330
    Abstract: A boring shield apparatus for attachment to a boring machine/jack for installing pipe sections underground is provided by this invention. Such invention comprises drill heads and a screw auger that rotate with respect to a non-rotating exterior housing. When the boring shield is operatively connected to the boring machine jack and moved forward into contact with the earth along the desired underground pathway for the pipeline, dirt is excavated by means of the rotating drill head and transferred inside a self-contained screw auger whereupon it is pushed safely away from the boring shield and boring machine. This boring shield apparatus pivots with respect to itself for enhanced steering capacity. It accommodates pipelines of larger diameter and length and rough exterior surface.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: May 26, 2015
    Assignee: LLAJ, Inc.
    Inventors: Jeffrey L. Olson, Lynnette A. Schillewaert, Travis J. Drahota