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Class Information
Number: 299/33
Name: Mining or in situ disintegration of hard material > Hard material disintegrating machines > With mine roof-supporting means
Description: Apparatus including means to prevent material which comprises the upper wall of an underground mine chamber from descending into the chamber.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8672414 Method for controlling longwall mining operations Mar. 18, 2014
8590982 Longwall mining roof supports Nov. 26, 2013
8100479 Miner acoustic communication and location system Jan. 24, 2012
7883298 Supporting device for an advance working or mining machine Feb. 8, 2011
7832960 All-conditions tunnel boring machine Nov. 16, 2010
7316456 Roadheading or mining machine with roof bolt drilling and setting devices Jan. 8, 2008
7201541 Prop head bearing Apr. 10, 2007
6942301 Method for boring and placing bolts for imbedding adhesively and device for carrying out this method Sep. 13, 2005
6848748 Mining system with drilling, loading, conveyor, and support Feb. 1, 2005
6578926 Mining machine having stabilizing apparatus and stabilizing apparatus Jun. 17, 2003
6505892 Softwall mining method and device Jan. 14, 2003
6497536 Roof support arrangement for mining apparatus and roof bolting equipment Dec. 24, 2002
6431653 Tunnel-boring machine and method of using the same Aug. 13, 2002
6386640 Oil tank arrangement for mining apparatus and roof bolting equipment May. 14, 2002
6224164 Mining machine with detachable articulated cutting assembly May. 1, 2001
6206478 Tunnel excavator with crawler drive and roof support bearing frames Mar. 27, 2001
6109700 Mine roof bolting apparatus and method of using the same Aug. 29, 2000
6089791 Tunnel construction method Jul. 18, 2000
6086159 Softwall mining method and device Jul. 11, 2000
5961185 Shielded cutterhead with small rolling disc cutters Oct. 5, 1999
5915790 Tunnel boring machine Jun. 29, 1999
5913573 Roof bolt drilling and setting apparatus Jun. 22, 1999
5890771 Tunnel boring machine and method Apr. 6, 1999
5795032 Mining machine with multiple propulsion members Aug. 18, 1998
5634692 Main-ancillary tunnel excavator Jun. 3, 1997
5632575 Method and apparatus for controlled pumping of bentonite around a pipe jacked tunnel May. 27, 1997
5582467 Displaceable working apparatus with extensible boom Dec. 10, 1996
5547260 Auxiliary cutter units of a shield machine Aug. 20, 1996
5527099 Tunnel boring machine anchor shoe structure and process of operating a tunnel boring machine having such anchor shoe structure Jun. 18, 1996
5474365 Apparatus for mining a seam, in particular of coal Dec. 12, 1995
5443305 Tunnelling machine Aug. 22, 1995
5340199 Method and machine for excavating drifts, tunnels, stopes, caverns or the like Aug. 23, 1994
5234257 Mobile mining machine having tilted swing axis and method Aug. 10, 1993
5205613 Tunnel boring machine with continuous forward propulsion Apr. 27, 1993
5203614 Tunneling machine having liquid balance low flow slurry system Apr. 20, 1993
5199825 Grid composite for longwall shield recovery in underground coal and trona mines Apr. 6, 1993
5199510 Raise boring head and stem assembly method Apr. 6, 1993
5180252 Earth pressure system shield process Jan. 19, 1993
5174683 Telescopic double shield boring machine Dec. 29, 1992
5163738 Apparatus for mining a seam, in particular of coal Nov. 17, 1992
5135326 Articulated shield tunneling machine Aug. 4, 1992
5118220 Method of building underground cavern and tunneling machine Jun. 2, 1992
5106163 Method and apparatus for inspecting a forward end portion in a tunneling machine Apr. 21, 1992
5104267 Roof supports for a mining installation Apr. 14, 1992
5087102 Continuous mining machine Feb. 11, 1992
5072992 Shield unit Dec. 17, 1991
5050934 Shearing machine with roof-bolt drilling and setting devices Sep. 24, 1991
5016942 Anchor boring unit May. 21, 1991
4966417 Device for guying a drift advancing machine within a drift Oct. 30, 1990
4953915 Roof fall separating and removing apparatus and method for use in thin seam highwall mining Sep. 4, 1990

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