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Class Information
Number: 175/23
Name: Boring or penetrating the earth > Boring without earth removal (i.e., compacting earth formation) > Drive point detached from shaft to form cased bore or with installation of casing > Drive point retracted through shaft or casing
Description: Subject matter including a step or means for withdrawing a drive point through a hollow shaft or casing.










Patents under this class:

Patent Number Title Of Patent Date Issued
8602689 Retractable nose cone system and method for forming reinforced concrete pilings and/or an electrical grounding system Dec. 10, 2013
8579048 Drilling device and drilling method Nov. 12, 2013
7798251 Circulation system for retrieval of bottom hole assembly during casing while drilling operations Sep. 21, 2010
7770669 Auger and hole stabilization combination system Aug. 10, 2010
7658240 Methods and apparatus for forming hole in ground Feb. 9, 2010
7637330 Casing bottom hole assembly retrieval process Dec. 29, 2009
6988855 Lateral displacement pier and method of installing the same Jan. 24, 2006
6814167 Boring device and boring method Nov. 9, 2004
6702040 Telescopic drilling method Mar. 9, 2004
6688815 Lateral displacement pier and method of installing the same Feb. 10, 2004
6425713 Lateral displacement pier, and apparatus and method of forming the same Jul. 30, 2002
6371203 Method of creating a wellbore in an underground formation Apr. 16, 2002
6106200 Process and device for simultaneously drilling and lining a hole Aug. 22, 2000
5694716 Root feeding device and associated root feeding method Dec. 9, 1997
5542481 Drive point locking method and apparatus Aug. 6, 1996
5339911 Cathodic protection and leak detection process and apparatus Aug. 23, 1994
5186263 Soil sample probe Feb. 16, 1993
5015124 Apparatus for directing forward movement of a rod May. 14, 1991
4750571 Screen placement method and apparatus Jun. 14, 1988
4574241 Marine surveying apparatus and method for locating pipelines buried under the seabed Mar. 4, 1986
4557409 Electrical grounding rod driving device Dec. 10, 1985
4530190 Self-anchoring fence post and method of installing same Jul. 23, 1985
3958648 Drilling equipment May. 25, 1976











 
 
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