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Class Information
Number: 175/393
Name: Boring or penetrating the earth > Bit or bit element > With fluid conduit lining or element (e.g., slush tube)
Description: Apparatus in which the bit is provided with means to conduct fluid comprising (1) a coated or treated passage or (2) a distinct element which is limited in use to fluid conducting, directing or blocking a fluid passage.










Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8550191 Digging tool, digging bit, and device Oct. 8, 2013
8528669 Earth removal member with features for facilitating drill-through Sep. 10, 2013
8517122 Air/water separator and methods of use thereof Aug. 27, 2013
8517124 PDC drill bit with flute design for better bit cleaning Aug. 27, 2013
8485283 Drill bit Jul. 16, 2013
8479844 Distance holder with jet deflector Jul. 9, 2013
8469120 Methods and apparatus for controlling cutting ribbons during a drilling operation Jun. 25, 2013
8439134 Method and apparatus for a true geometry, durable rotating drill bit May. 14, 2013
8393417 Apparatus and methods to optimize fluid flow and performance of downhole drilling equipment Mar. 12, 2013
8381844 Earth-boring tools and components thereof and related methods Feb. 26, 2013
8264532 Through-mill wellbore optical inspection and remediation apparatus and methodology Sep. 11, 2012
8256533 Distance holder with helical slot Sep. 4, 2012
8240402 Earth-boring tools and components thereof including blockage-resistant internal fluid passageways, and methods of forming such tools and components Aug. 14, 2012
8235145 Gauge pads, cutters, rotary components, and methods for directional drilling Aug. 7, 2012
8127868 Apparatus and methods for drilling a wellbore using casing Mar. 6, 2012
8113301 Jetted underreamer assembly Feb. 14, 2012
8100201 Rotary drill bit Jan. 24, 2012
8091654 Rock bit with vectored hydraulic nozzle retention sleeves Jan. 10, 2012
8079427 Methods of forming earth-boring tools having features for affecting cuttings flow Dec. 20, 2011
8074749 Earth removal member with features for facilitating drill-through Dec. 13, 2011
8028765 Drill bit, drilling system, and related methods Oct. 4, 2011
8020639 Cutting removal system for PDC drill bits Sep. 20, 2011
8011457 Downhole hammer assembly Sep. 6, 2011
7954568 Drill bit nozzle assembly and insert assembly including a drill bit nozzle assembly Jun. 7, 2011
7938204 Reamer with improved hydraulics for use in a wellbore May. 10, 2011
7926596 Drag bit with utility blades Apr. 19, 2011
7918292 Earth-boring tools having features for affecting cuttings flow Apr. 5, 2011
7828089 Erosion resistant fluid passageways and flow tubes for earth-boring tools, methods of forming the same and earth-boring tools including the same Nov. 9, 2010
7802640 Rotary drill bit with nozzles designed to enhance hydraulic performance and drilling fluid efficiency Sep. 28, 2010
7770671 Nozzle having a spray pattern for use with an earth boring drill bit Aug. 10, 2010
7735582 Insertable devices for retention systems, structures for attachment and methods of use Jun. 15, 2010
7730975 Drill bit porting system Jun. 8, 2010
7681668 Shrink-fit sleeve assembly for a drill bit, including nozzle assembly and method therefor Mar. 23, 2010
7665549 Entrainment fluid channeling device for a down-hole drill string Feb. 23, 2010
7621349 Drill bit with a fixed cutting structure Nov. 24, 2009
7621350 Impregnated bit with changeable hydraulic nozzles Nov. 24, 2009
7617886 Fluid-actuated hammer bit Nov. 17, 2009
7533737 Jet arrangement for a downhole drill bit May. 19, 2009
7520343 Retrievable center bit Apr. 21, 2009
7481284 Converging diverging nozzle for earth-boring drill bits, method of substantially bifurcating a drilling fluid flowing therethrough, and drill bits so equipped Jan. 27, 2009
7413033 Directional drill head Aug. 19, 2008
7373994 Self cleaning coring bit May. 20, 2008
7290626 Transmission sleeve Nov. 6, 2007
7281592 Injecting a fluid into a borehole ahead of the bit Oct. 16, 2007
7252164 Cutting structure based hydraulics Aug. 7, 2007
7243743 Drilling assembly and method for drilling a barehole into geological formations Jul. 17, 2007
7213661 Dual property hydraulic configuration May. 8, 2007
7117960 Bits for use in drilling with casting and method of making the same Oct. 10, 2006
7090039 Assembly for drilling low pressure formation Aug. 15, 2006
7070010 Drill bit Jul. 4, 2006

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