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Class Information
Number: 175/284
Name: Boring or penetrating the earth > Cutter element laterally shiftable below ground (e.g., expansible) > Cutter element shifted by longitudinally relatively movable parts
Description: Apparatus in which the cutter element is moved laterally by the relative bodily movement of a plurality of parts carried by the bit head or shaft, which parts move relative to each other in the direction of the longitudinal axis of the shaft.










Sub-classes under this class:

Class Number Class Name Patents
175/286 Cam or gear engaging cutter element 51
175/285 Toggle or linkage between movable parts 37


Patents under this class:

Patent Number Title Of Patent Date Issued
8668031 Drill bit and method for inserting, expanding, collapsing, and retrieving drill bit Mar. 11, 2014
8381842 Apparatus for rotary mining Feb. 26, 2013
8281880 Expandable tool for an earth boring system Oct. 9, 2012
8172009 Expandable tool with at least one blade that locks in place through a wedging effect May. 8, 2012
8122977 Cutting device with multiple cutting structures Feb. 28, 2012
8122978 Drilling device with undercutting Feb. 28, 2012
7997356 Apparatus for rotary mining Aug. 16, 2011
7954564 Placement of cutting elements on secondary cutting structures of drilling tool assemblies Jun. 7, 2011
7918280 Radial indexing communication tool and method for subsurface safety valve with communication component Apr. 5, 2011
7823632 Method and apparatus for programmable robotic rotary mill cutting of multiple nested tubulars Nov. 2, 2010
7770664 Wear indicators for expandable earth boring apparatus Aug. 10, 2010
7770670 Apparatus for rotary mining Aug. 10, 2010
7753139 Cutting device with multiple cutting structures Jul. 13, 2010
7694740 Communication tool and method for a subsurface safety valve with communication component Apr. 13, 2010
7597158 Drilling and hole enlargement device Oct. 6, 2009
7467661 Downhole perforator assembly and method for use of same Dec. 23, 2008
7353889 Rotary driven pipe-bursting tool Apr. 8, 2008
7350596 Methods and apparatus for expanding the diameter of a borehole Apr. 1, 2008
7143847 Drilling apparatus Dec. 5, 2006
6851491 Internal pressure indicator and locking mechanism for a downhole tool Feb. 8, 2005
6722452 Pantograph underreamer Apr. 20, 2004
6668949 Underreamer and method of use Dec. 30, 2003
6655474 Drill for making wide diameter and high depth holes and method for carrying out said holes Dec. 2, 2003
6615933 Downhole tool with extendable members Sep. 9, 2003
6591922 Pantograph underreamer and method for forming a well bore cavity Jul. 15, 2003
6189631 Drilling tool with extendable elements Feb. 20, 2001
5103921 Coring assembly for mounting on the end of a drill string Apr. 14, 1992
5090480 Underreamer with simultaneously expandable cutter blades and method Feb. 25, 1992
5009274 Laterally adjustable drilling tool Apr. 23, 1991
4842082 Variable outside diameter tool for use in pikewells Jun. 27, 1989
4635737 Undercutting drill Jan. 13, 1987
4629011 Method and apparatus for taking core samples from a subterranean well side wall Dec. 16, 1986
4497382 Retractable core drill bit Feb. 5, 1985
4407376 Under-reaming pile bore excavator Oct. 4, 1983
4278137 Apparatus for extracting minerals through a borehole Jul. 14, 1981
4083405 Well drilling method and apparatus therefor Apr. 11, 1978











 
 
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