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Class Information
Number: 299/31
Name: Mining or in situ disintegration of hard material > Hard material disintegrating machines > Stepper-type advance-causing means
Description: Apparatus in which the advance causing means comprises a device having feet or plate type anchors which alternately engage and disengage the ground or the sidewalls of a tunnel to cause the apparatus to move forward.










Sub-classes under this class:

Class Number Class Name Patents
299/32 Planer-type cutter 21


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8534765 Method for introducing a vertical shaft and shaft driving machine Sep. 17, 2013
7736738 Coated mining bolt Jun. 15, 2010
7617891 Mechanical crawler Nov. 17, 2009
7207632 Shield system for coal mining Apr. 24, 2007
7055625 Self-propelled instrumented deep drilling system Jun. 6, 2006
6955232 Equipment for drilling vertical boreholes Oct. 18, 2005
6910834 Mine prop Jun. 28, 2005
6799809 Method and apparatus for remote self-propelled conveying in mineral deposits Oct. 5, 2004
6644753 Method and apparatus for remote self-propelled conveying in mineral deposits Nov. 11, 2003
6578926 Mining machine having stabilizing apparatus and stabilizing apparatus Jun. 17, 2003
6505892 Softwall mining method and device Jan. 14, 2003
6431653 Tunnel-boring machine and method of using the same Aug. 13, 2002
5964305 Trench wall cutter Oct. 12, 1999
5931601 Tunnel excavator Aug. 3, 1999
5915790 Tunnel boring machine Jun. 29, 1999
5890771 Tunnel boring machine and method Apr. 6, 1999
5765925 Tunnel boring machine for hard ground and soft ground Jun. 16, 1998
5649745 Inflatable gripper assembly for rock boring machine Jul. 22, 1997
5575537 Tunnel drilling machine or tube-driving machine Nov. 19, 1996
5527099 Tunnel boring machine anchor shoe structure and process of operating a tunnel boring machine having such anchor shoe structure Jun. 18, 1996
5386741 Robotic snake Feb. 7, 1995
5360260 Tunneling machine with radially sweeping tool carriers Nov. 1, 1994
5333936 Low profile mining machine having a cutter mounted on a slidable carriage Aug. 2, 1994
5312163 System for aiding operation of excavating type underground advancing machine May. 17, 1994
5255960 Tunnel drilling apparatus with drill waste removal Oct. 26, 1993
5234257 Mobile mining machine having tilted swing axis and method Aug. 10, 1993
5228752 Tunnel boring machine Jul. 20, 1993
5205613 Tunnel boring machine with continuous forward propulsion Apr. 27, 1993
5205612 Transport apparatus and method of forming same Apr. 27, 1993
5192116 Gantry-type mobile mining machine Mar. 9, 1993
5192115 Tramming mobile mining machine Mar. 9, 1993
5135326 Articulated shield tunneling machine Aug. 4, 1992
5125719 Tunnel boring machine and method Jun. 30, 1992
5076729 Tunnel-driving and support system Dec. 31, 1991
5051032 Method and apparatus for continuously excavating shaft and tunnel Sep. 24, 1991
5046783 Tunnel boring machine Sep. 10, 1991
5005911 Quadrishoe tunnel boring machine Apr. 9, 1991
4915453 Floating shoe tunnel boring machine and boring process Apr. 10, 1990
4898496 Apparatus for underground tunneling Feb. 6, 1990
4874267 Tunnel boring machine Oct. 17, 1989
4869358 Conveyor belt system for a continuous mining machine Sep. 26, 1989
4831939 Security screen May. 23, 1989
4818025 Narrow opening mechanical miner Apr. 4, 1989
4804295 Shielded tunnel excavator Feb. 14, 1989
4768835 Advancing system for coal winning machine Sep. 6, 1988
4705120 Drilling machine Nov. 10, 1987
4696600 Method and apparatus for modifying the cross-sectional profile of an adit, tunnel or the like Sep. 29, 1987
4687375 Circular heading machine Aug. 18, 1987
4655493 Shield tunneling machine Apr. 7, 1987
4637657 Tunnel boring machine Jan. 20, 1987

1 2 3










 
 
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