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Class Information
Number: 175/292
Name: Boring or penetrating the earth > Cutter element laterally shiftable below ground (e.g., expansible) > Pivoted about substantially longitudinal axis
Description: Apparatus in which the laterally movable cutter element is pivotally mounted on the bit head or shaft to swing about an axis which substantially parallel to the longitudinal axis of the shaft.

Patents under this class:

Patent Number Title Of Patent Date Issued
8469097 Subterranean tubular cutter with depth of cut feature Jun. 25, 2013
8347987 Apparatus and method for installing ground anchoring systems Jan. 8, 2013
8302706 Apparatus and method for installing ground anchoring systems Nov. 6, 2012
8112911 Method and device for mixing earth in situ for the formation of underground walls or diaphragms Feb. 14, 2012
7730974 Self actuating underreamer Jun. 8, 2010
7686103 Drill bit with radially expandable cutter, and method of using same Mar. 30, 2010
6976547 Actuator underreamer Dec. 20, 2005
6973978 Drilling tool having an expandable bladder and method for using same Dec. 13, 2005
6695074 Method and apparatus for enlarging well bores Feb. 24, 2004
6691803 Drill bit assembly having pivotal cutter blades Feb. 17, 2004
6668949 Underreamer and method of use Dec. 30, 2003
6595301 Single-blade underreamer Jul. 22, 2003
6591922 Pantograph underreamer and method for forming a well bore cavity Jul. 15, 2003
6588517 Boring apparatus Jul. 8, 2003
6550553 Boring apparatus Apr. 22, 2003
6454024 Replaceable drill bit assembly Sep. 24, 2002
6439323 Seismic shothole reaming module Aug. 27, 2002
6378629 Boring apparatus Apr. 30, 2002
6357538 Bit torque limiting device Mar. 19, 2002
6182774 Bit torque limiting device Feb. 6, 2001
6112835 Drilling apparatus having a radially displaceable reamer Sep. 5, 2000
5971085 Downhole unit for use in boreholes in a subsurface formation Oct. 26, 1999
5947214 BIT torque limiting device Sep. 7, 1999
5934394 Drill means Aug. 10, 1999
5590724 Underreaming method Jan. 7, 1997
5259469 Drilling tool for percussive and rotary drilling Nov. 9, 1993
5219246 Drills for piles and soil stabilization, and drilling method Jun. 15, 1993
5186265 Retrievable bit and eccentric reamer assembly Feb. 16, 1993
5180209 Apparatus for cutting recessed grooves into concrete and rock material Jan. 19, 1993
5139099 Excavation tool Aug. 18, 1992
5052503 Eccentric drilling tool Oct. 1, 1991
4978258 Cutting tool Dec. 18, 1990
4962822 Downhole drill bit and bit coupling Oct. 16, 1990
4874046 Groove cutter for concrete bores Oct. 17, 1989
4770259 Drill tool Sep. 13, 1988
4627180 Excavating bucket Dec. 9, 1986
4440244 Drill tool Apr. 3, 1984
4366988 Sonic apparatus and method for slurry well bore mining and production Jan. 4, 1983
4262758 Borehole angle control by gage corner removal from mechanical devices associated with drill bit and drill string Apr. 21, 1981
4202416 Method and apparatus for sinking a cased borehole for producing cased pile foundations May. 13, 1980
4193462 Rotary boring head Mar. 18, 1980
4046205 Earth auger and method for driving piles and the like by means of said earth auger Sep. 6, 1977
4036026 Method and apparatus for establishing an anchor Jul. 19, 1977
4027490 Self-sinking, axial passage foundation pile and method Jun. 7, 1977
3973409 Apparatus for establishing an anchor Aug. 10, 1976

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