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Class Information
Number: 175/394
Name: Boring or penetrating the earth > Bit or bit element > With helical-conveying portion
Description: Apparatus in which the bit is provide with a screw shaped surface extending axially thereof for conveying cuttings away from the end of the bit, said screw shaped surface extending through a convolution of at least 180°.










Sub-classes under this class:

Class Number Class Name Patents
175/395 Impact type 29


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8616303 Helical drilling apparatus, systems, and methods Dec. 31, 2013
8607900 Downhole tool engaging a tubing string between a drill bit and tubular for reaming a wellbore Dec. 17, 2013
8506207 Helical screw pile Aug. 13, 2013
8443918 Excavation and compaction equipment for the construction of screw piles May. 21, 2013
8418784 Central cutting region of a drilling head assembly Apr. 16, 2013
8381843 Well bore reamer Feb. 26, 2013
8312942 Roller cone drill bits with improved fluid flow Nov. 20, 2012
8210286 Impregnated rotary bit Jul. 3, 2012
8196681 Earth boring device Jun. 12, 2012
8006783 Helical drilling apparatus, systems, and methods Aug. 30, 2011
7946355 Auger assembly May. 24, 2011
7887263 Ground anchor Feb. 15, 2011
7849938 Ground augering assembly Dec. 14, 2010
7814991 Process and apparatus for subterranean drilling Oct. 19, 2010
7779938 Swivel for use in installing large diameter casing Aug. 24, 2010
7748479 Box gusseted earth auger Jul. 6, 2010
7699119 Auger quick coupler Apr. 20, 2010
7686105 Drill, wall protector and drilling method Mar. 30, 2010
7677336 Portable drilling device Mar. 16, 2010
7669673 Auger having interchangeable cutting heads and method of using the same Mar. 2, 2010
7641001 Auger Jan. 5, 2010
7631705 Enhanced screen auger sampling system Dec. 15, 2009
7628232 Rotary-percussion drill with a four-start helical shaft Dec. 8, 2009
7621351 Reaming tool suitable for running on casing or liner Nov. 24, 2009
7591329 Auger with a movable gouge for making a borehole Sep. 22, 2009
7571781 Auger bit Aug. 11, 2009
7546887 Method and device for producing a borehole in the soil Jun. 16, 2009
7506697 Recoil auger with clutch bearing Mar. 24, 2009
7445057 Method and apparatus for introducing elongate members into the ground Nov. 4, 2008
7395880 Mortar removal drill bit system Jul. 8, 2008
7357199 Bit for excavation and compaction equipment for erecting piles, and excavation equipment provided with said bit Apr. 15, 2008
7353892 Guide frame for an earth drilling apparatus Apr. 8, 2008
7258178 Auger planter Aug. 21, 2007
7210543 Reversible power takeoff driven post hole digger May. 1, 2007
7192094 Auger flight support system Mar. 20, 2007
7163363 Perforating drill Jan. 16, 2007
7140456 Easy hold power auger Nov. 28, 2006
7128174 Drilling and anchoring device for diverse applications Oct. 31, 2006
7117960 Bits for use in drilling with casting and method of making the same Oct. 10, 2006
7114584 Hollow auger head assembly Oct. 3, 2006
7059431 Self-penetrating drilling method and thrust-generating tool for implementing same Jun. 13, 2006
7001120 Drilling tool Feb. 21, 2006
6994494 Device for producing bored piles Feb. 7, 2006
6959775 Drill bit Nov. 1, 2005
6955227 Auger for mixing and burrowing Oct. 18, 2005
6955234 Auger bit Oct. 18, 2005
6951258 Hollow auger head assembly Oct. 4, 2005
6945339 Core drill Sep. 20, 2005
6910838 Rock drill Jun. 28, 2005
6868924 Rock drill Mar. 22, 2005

1 2 3 4 5










 
 
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