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Class Information
Number: 175/340
Name: Boring or penetrating the earth > Bit or bit element > Rolling cutter bit or rolling cutter bit element > With drilling fluid conduit details > Fluid conduit lining or element (e.g., slush tube or nozzle)
Description: Apparatus in which the means to supply drilling fluid comprises (1) a coated or treated passage or (2) a distinct element which is limited in use to conducting, directing, or blocking the drilling fluid.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8544567 Drill bit with a flow interrupter Oct. 1, 2013
8439134 Method and apparatus for a true geometry, durable rotating drill bit May. 14, 2013
8387724 Rotary drill bit with nozzles designed to enhance hydraulic performance and drilling fluid efficiency Mar. 5, 2013
8312942 Roller cone drill bits with improved fluid flow Nov. 20, 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
8201646 Method and apparatus for a true geometry, durable rotating drill bit Jun. 19, 2012
8127868 Apparatus and methods for drilling a wellbore using casing Mar. 6, 2012
8091654 Rock bit with vectored hydraulic nozzle retention sleeves Jan. 10, 2012
8047308 Rotary drill bit with nozzles designed to enhance hydraulic performance and drilling fluid efficiency Nov. 1, 2011
8020639 Cutting removal system for PDC drill bits Sep. 20, 2011
7984772 Downhole centrifugal drilling fluid separator Jul. 26, 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
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
7681668 Shrink-fit sleeve assembly for a drill bit, including nozzle assembly and method therefor Mar. 23, 2010
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
7325632 Nozzle bore for PDC bits Feb. 5, 2008
7252164 Cutting structure based hydraulics Aug. 7, 2007
7213661 Dual property hydraulic configuration May. 8, 2007
7188682 Multi-stage diffuser nozzle Mar. 13, 2007
7059430 Hydro-lifter rock bit with PDC inserts Jun. 13, 2006
7040423 Nozzle bore for high flow rates May. 9, 2006
6932285 Orifice body with mixing chamber for abrasive water jet cutting Aug. 23, 2005
6877571 Down hole drilling assembly with independent jet pump Apr. 12, 2005
6848517 Drillable drill bit nozzle Feb. 1, 2005
6789635 Drill bit for directional drilling in cobble formations Sep. 14, 2004
6763902 Rockbit with attachable device for improved cone cleaning Jul. 20, 2004
6698538 Drill bit having adjustable total flow area Mar. 2, 2004
6585063 Multi-stage diffuser nozzle Jul. 1, 2003
6581702 Three-cone rock bit with multi-ported non-plugging center jet nozzle and method Jun. 24, 2003
6571887 Directional flow nozzle retention body Jun. 3, 2003
6536847 Pick box for housing a mineral cutter pick Mar. 25, 2003
6474423 Drill bit (A) Nov. 5, 2002
6470980 Self-excited drill bit sub Oct. 29, 2002
6408957 Sealed bearing roller cone bit having anti-plugging device Jun. 25, 2002
6390211 Variable orientation nozzles for earth boring drill bits, drill bits so equipped, and methods of orienting May. 21, 2002
6390212 Drill bit (b) May. 21, 2002
6354387 Nozzle orientation for roller cone rock bit Mar. 12, 2002
6311793 Rock bit nozzle and retainer assembly Nov. 6, 2001
6227316 Jet bit with variable orifice nozzle May. 8, 2001
6227315 Air jet earth-boring bit with non-offset cutters May. 8, 2001
6192999 Extended drill bit nozzle having extended retainer Feb. 27, 2001
6186251 Method of altering a balance characteristic and moment configuration of a drill bit and drill bit Feb. 13, 2001
6142248 Reduced erosion nozzle system and method for the use of drill bits to reduce erosion Nov. 7, 2000
6142247 Biased nozzle arrangement for rolling cone rock bits Nov. 7, 2000
6135218 Fixed cutter drill bits with thin, integrally formed wear and erosion resistant surfaces Oct. 24, 2000
6116357 Rock drill bit with back-reaming protection Sep. 12, 2000

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