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Class Information
Number: 175/382
Name: Boring or penetrating the earth > Bit or bit element > Adjustable cutter element
Description: Apparatus in which the bit is provided with a movable cutter element and means to selectively hold said cutter element in different positions with respect to the bit head.










Sub-classes under this class:

Class Number Class Name Patents
175/383 Adjustment presents different cutting edge 22
175/384 Radially adjustable 40


Patents under this class:

Patent Number Title Of Patent Date Issued
8646547 Chisel ice drill Feb. 11, 2014
8528661 Drill bit with electrical power generation devices Sep. 10, 2013
8499859 Drill bit having rotational cutting elements and method of drilling Aug. 6, 2013
8469117 Drill bits and methods of drilling curved boreholes Jun. 25, 2013
8307914 Drill bits and methods of drilling curved boreholes Nov. 13, 2012
8286735 Drill bit having rotational cutting elements and method of drilling Oct. 16, 2012
8061455 Drill bit with adjustable cutters Nov. 22, 2011
7681671 Drilling apparatus having in-line extending wings and driving method thereof Mar. 23, 2010
7571083 Method of designing a drill bit, and bits made using said method Aug. 4, 2009
7458430 Attachment means for drilling equipment Dec. 2, 2008
7389833 Multi-sectional percussive drill bit assembly Jun. 24, 2008
7341116 Drilling efficiency through beneficial management of rock stress levels via controlled oscillations of subterranean cutting elements Mar. 11, 2008
7337858 Drill bit assembly adapted to provide power downhole Mar. 4, 2008
7195079 Directional reaming system Mar. 27, 2007
7055632 Well stimulation tool and method for inserting a backpressure plug through a mandrel of the tool Jun. 6, 2006
6607046 Expandable drill bit Aug. 19, 2003
6142250 Rotary drill bit having moveable formation-engaging members Nov. 7, 2000
5027914 Pilot casing mill Jul. 2, 1991
5004056 Percussion-rotary drilling tool Apr. 2, 1991
4974688 Steerable earth boring device Dec. 4, 1990
4923021 Combination bit for coking oven May. 8, 1990
4842337 Mining bit and holder Jun. 27, 1989
4690228 Changeover bit for extended life, varied formations and steady wear Sep. 1, 1987
4610318 Rotary cutter assembly Sep. 9, 1986
4456075 Weeding auger with U-shaped blade Jun. 26, 1984
4278296 Coal mining drum with adjustable linier edge cutters Jul. 14, 1981











 
 
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