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Class Information
Number: 175/262
Name: Boring or penetrating the earth > Tool removable or insertable through or around driving or driven shaft or casing > Tool movable exteriorly of shaft
Description: Apparatus in which the tool is movable to operative position by moving externally of the shaft in the space between the shaft and the bore wall.










Patents under this class:

Patent Number Title Of Patent Date Issued
8439131 Drill bit assembly and method of performing an operation in a wellbore May. 14, 2013
8201642 Drilling assemblies including one of a counter rotating drill bit and a counter rotating reamer, methods of drilling, and methods of forming drilling assemblies Jun. 19, 2012
8016053 Drill bit configurations for parked-bit or through-the-bit-logging Sep. 13, 2011
8011429 Transport assembly Sep. 6, 2011
7906843 Substrate having a functionally gradient coefficient of thermal expansion Mar. 15, 2011
7555854 Earth auger head and excavation method Jul. 7, 2009
7445057 Method and apparatus for introducing elongate members into the ground Nov. 4, 2008
7413035 Reusable auger barrel Aug. 19, 2008
7287609 Drilling a borehole Oct. 30, 2007
6652195 Method and apparatus for forming piles in place Nov. 25, 2003
6557654 Drill pipe having a journal formed thereon May. 6, 2003
6550553 Boring apparatus Apr. 22, 2003
6435776 Method and apparatus for forming piles in place Aug. 20, 2002
6378629 Boring apparatus Apr. 30, 2002
4962822 Downhole drill bit and bit coupling Oct. 16, 1990
4893684 Method of changing well fluid Jan. 16, 1990
4691789 Process for establishing a clear horizontal borehole in a subterranean formation Sep. 8, 1987
4644715 Soil excavating sleeve Feb. 24, 1987
4531596 Tool for boring an enlarged portion within the interior of a hole and a tiltable tool for completing that tool Jul. 30, 1985











 
 
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