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Class Information
Number: 405/143
Name: Hydraulic and earth engineering > Underground passageway, e.g., tunnel > Boring > Shield > Direction control
Description: Method or apparatus wherein the course or rotation of the shield is regulated.

Patents under this class:

Patent Number Title Of Patent Date Issued
8474552 Piston devices and methods of use Jul. 2, 2013
8393828 Boring machine steering system with force multiplier Mar. 12, 2013
8210774 Guided boring machine and method Jul. 3, 2012
8157024 Ball piston steering devices and methods of use Apr. 17, 2012
7976242 Drill head for a microtunnelling apparatus Jul. 12, 2011
7651170 Bore head for microbore operation Jan. 26, 2010
7510025 Boring machine Mar. 31, 2009
6772134 Control means for a horizontal boring tool Aug. 3, 2004
5813482 Earth boring system and apparatus Sep. 29, 1998
5529437 Guidance system and method for keeping a tunnel boring machine continuously on a plan line Jun. 25, 1996
5501548 Method for controlling the direction of a shield tunneling machine and an apparatus therefor Mar. 26, 1996
5478170 Controlling apparatus for excavator Dec. 26, 1995
5470132 Tunnelling head and method Nov. 28, 1995
5330292 System and method for transmitting and calculating data in shield machine Jul. 19, 1994
5312163 System for aiding operation of excavating type underground advancing machine May. 17, 1994
5295734 Method and apparatus for drilling a tunnel Mar. 22, 1994
5296915 Method and apparatus for controlling direction of excavating machine Mar. 22, 1994
5240350 Apparatus for detecting position of underground excavator and magnetic field producing cable Aug. 31, 1993
5236284 Drilling apparatus and method for its control Aug. 17, 1993
5186579 Apparatus for controlling direction of underground excavator Feb. 16, 1993
5135326 Articulated shield tunneling machine Aug. 4, 1992
5123708 Shield tunnelling machine Jun. 23, 1992
5061120 Direction correcting device for shield tunnelling machine Oct. 29, 1991
5017045 Method and apparatus for controlling attitude of shield excavator May. 21, 1991
4904115 Method and device for controlling the trajectory of a shield-type tunnelling machine Feb. 27, 1990
4898498 Thrust transmitting device Feb. 6, 1990
4830535 Knife shield driving device and method for the excavating and/or final supporting of galleries or the like May. 16, 1989
4818026 Shield type tunneling apparatus Apr. 4, 1989
4655493 Shield tunneling machine Apr. 7, 1987
4630967 Arrangement for underground advance driving of pipe trains composed of individual pipe lengths Dec. 23, 1986
4571122 Pipe laying apparatus Feb. 18, 1986
4508390 Machine for making underground galleries Apr. 2, 1985
4474494 Tunnel drive shield Oct. 2, 1984
4436448 Excavating machine for tunnels and galleries Mar. 13, 1984
4432665 Tunnel driving apparatus Feb. 21, 1984
4432667 Insulation of tunnel linings Feb. 21, 1984
4420188 Double shield tunnel boring machine Dec. 13, 1983
4311411 Pipe jacking apparatus Jan. 19, 1982
4273468 Tunnelling shields and like moveable apparatus Jun. 16, 1981
4221503 Drilling method and apparatus for large diameter pipe Sep. 9, 1980
4122683 Tunnel drive shield Oct. 31, 1978
3961825 Tunnelling machine Jun. 8, 1976

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