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Apparatus for guiding and steering earth boring casing

  • US 5,203,418 A
  • Filed: 03/25/1992
  • Issued: 04/20/1993
  • Est. Priority Date: 01/28/1991
  • Status: Expired due to Term
First Claim
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1. Earth boring apparatus for boring and laying pipe casings underground beginning at a boring station pit to form a cased bore which includes means for forming a bore and pushing the pipe casings through the bore as it is formed, said apparatus comprising:

  • a plurality of pipe casings joined together having a forward casing at a forward end of said casings;

    a steering head carried by said forward casing;

    a cutting head carried by said steering head for forming said bore;

    hinge means connecting said forward casing and steering head for rotation about a first axis and a second axis disposed at an angle to said first axis; and

    actuation means connected to said steering head for imparting an actuation force to rotate said steering head through said hinge means about said first and second axes to steer said steering head.

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