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Class Information
Number: 175/173
Name: Boring or penetrating the earth > With tool drive prime mover or above-ground mechanical motion converting drive means > With diversely operated shafts extending into bore
Description: Apparatus in which means are provided to simultaneously or consecutively move in a different manner, plural shafts which extend into a bore; the shafts generally consist of two tool drive shafts, or a tool drive shaft and a tool actuating shaft.










Patents under this class:

Patent Number Title Of Patent Date Issued
7896108 Dual string orbital drilling system Mar. 1, 2011
7775298 Drilling assemblies and methods of drilling Aug. 17, 2010
7353889 Rotary driven pipe-bursting tool Apr. 8, 2008
6827158 Two-pipe on-grade directional boring tool and method Dec. 7, 2004
6467558 Multiple air hammer apparatus and excavating direction correcting method therefor Oct. 22, 2002
6408955 Hybrid sectional and coiled tubing drilling rig Jun. 25, 2002
6378630 Locking swivel device Apr. 30, 2002
6360829 Soil sampling device Mar. 26, 2002
6189607 Heat exchanger Feb. 20, 2001
5924500 Steerable boring machine Jul. 20, 1999
5501287 Drilling device with telescopic Kellybar Mar. 26, 1996
5392869 Anchor bolt drilling and setting device Feb. 28, 1995
5355966 Drilling method and an assembly for performing the method Oct. 18, 1994
5125464 Drilling device for the study and exploitation of the subsoil Jun. 30, 1992
5064002 Concentric drill rod assemblies for percussion rock drills Nov. 12, 1991
4993504 Device for efficient energy transfer and damping of impact drilling machines Feb. 19, 1991
4854402 Shaft sinking rig Aug. 8, 1989
4842081 Simultaneous drilling and casing device Jun. 27, 1989
4711310 Rotary head Dec. 8, 1987
4550788 Roof bolt hole groover Nov. 5, 1985
4456079 Apparatus and method for taking soil samples Jun. 26, 1984
4410055 Drilling tool Oct. 18, 1983
4365677 Earth boring apparatus Dec. 28, 1982
4323129 Hole digging apparatus and method Apr. 6, 1982
4300642 Device for reaming and collecting dust, for a drilling apparatus Nov. 17, 1981
4274663 Multiple wall drill pipe Jun. 23, 1981
4270618 Earth boring apparatus Jun. 2, 1981
4263975 Device for high-speed boring of stepped post-holes Apr. 28, 1981
4232752 Method and apparatus for driving pipe Nov. 11, 1980
4148367 Well drilling apparatus Apr. 10, 1979
4128134 Method and apparatus for determining the orientation of a core cut in a bore hole Dec. 5, 1978
4126193 Mobile drilling apparatus Nov. 21, 1978
4105081 Rock-drilling and bolt-setting apparatus Aug. 8, 1978
4025119 Method and apparatus for strip mining May. 24, 1977
3981368 Coupling means in a drilling machine Sep. 21, 1976
3980145 Method and apparatus for inserting tubular structural members in a soil formation Sep. 14, 1976
3945443 Steerable rock boring head for earth boring machines Mar. 23, 1976











 
 
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