US20090321145A1 - Threaded nozzle for a cutter bit - Google Patents

Threaded nozzle for a cutter bit Download PDF

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Publication number
US20090321145A1
US20090321145A1 US12/146,704 US14670408A US2009321145A1 US 20090321145 A1 US20090321145 A1 US 20090321145A1 US 14670408 A US14670408 A US 14670408A US 2009321145 A1 US2009321145 A1 US 2009321145A1
Authority
US
United States
Prior art keywords
nozzle
cutter bit
microinches
threaded
threaded nozzle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/146,704
Other languages
English (en)
Inventor
Bradley B. Fisher
Hugo Serrano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kennametal Inc
Original Assignee
Kennametal Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kennametal Inc filed Critical Kennametal Inc
Priority to US12/146,704 priority Critical patent/US20090321145A1/en
Assigned to KENNAMETAL INC. reassignment KENNAMETAL INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SERRANO, HUGO, FISHER, BRADLEY B.
Priority to GB1021832A priority patent/GB2473576A/en
Priority to PCT/US2009/044619 priority patent/WO2009158080A1/en
Priority to CN2009801238404A priority patent/CN102076925A/zh
Priority to DE112009001398T priority patent/DE112009001398T5/de
Priority to BRPI0910216A priority patent/BRPI0910216A2/pt
Publication of US20090321145A1 publication Critical patent/US20090321145A1/en
Abandoned legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
    • E21B10/61—Drill bits characterised by conduits or nozzles for drilling fluids characterised by the nozzle structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/02—Compacting only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/16—Both compacting and sintering in successive or repeated steps
    • B22F3/162—Machining, working after consolidation
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy

Definitions

  • the present invention relates to earth-boring drill bits and, in particular, to nozzles utilized in earth-boring drill bits.
  • Earth-boring bits such as roller cone bits and fixed cutter bits are often equipped with threaded nozzles which provide fluid for flushing a bore hole of debris, flushing the bit and may also be a source for hydraulic drilling action.
  • threaded nozzles are often made from a hardened material such as cemented carbide, i.e., tungsten-carbide cobalt.
  • the standard method of manufacturing threaded nozzles for use in earth-boring bits has been to first press and sinter a nozzle having the general shape of a nozzle. The unfinished nozzle is then machined to its final finish and dimensions. This machining includes threading the nozzle. Machining of the sintered tungsten-carbide is extremely difficult due to the material's hardness and often requires the use of expensive diamond cutting products.
  • the present invention was developed in view of the foregoing.
  • the present invention provides a threaded nozzle for use in a cutter bit. Threads are either machined into or pressed into a powder nozzle then the nozzle is sintered. Threads of the nozzles of the present invention have a rougher surface finish and are believed to be harder than threads machined post-sintering. Shaping of the threads into the nozzle before sintering is also more economical and efficient than post-sintering machining.
  • One aspect of the present invention provides an unsintered, pressed powder nozzle for use in a cutter bit comprising a body comprising an exterior face, an inlet end and a discharge end, a bore extending through the body from the inlet end to the discharge end and external threads extending at least partially along the exterior face of the body of the unsintered nozzle.
  • a threaded nozzle for use in a cutter bit comprising a body comprising an exterior face, an inlet end and a discharge end, a bore extending through the body from the inlet end to the discharge end and external threads extending at least partially along the exterior face of the body of the threaded nozzle, wherein the external threads have a surface roughness of at least 40 microinches.
  • Another aspect of the present invention provides a method of producing a threaded nozzle for use in a cutter bit comprising the steps of first providing a pressed powder nozzle blank, second machining threads into the pressed powder nozzle blank and third sintering the pressed powder nozzle blank.
  • Another aspect of the present invention provides a method of producing a threaded nozzle for use in a cutter bit comprising the steps of providing a die comprising a first end, a second end, a sleeve and a split insert having a thread forming section inserted into the sleeve, inserting a first punch into a first end of the die, filling the die with a metal powder or ceramic powder, inserting a second punch into the second end of the die, applying pressure to the powder within the die to create a pressed powder blank, removing the pressed powder blank from the die, and sintering the pressed powder blank.
  • FIG. 1 is an oblique view of a threaded nozzle installed in a fixed cutter bit according to one embodiment of the present invention.
  • FIG. 2 is a side view of a threaded nozzle according to one embodiment of the present invention.
  • FIG. 3 is a front view of the threaded nozzle shown in FIG. 2 .
  • FIG. 4 is a cross section of the threaded nozzle of FIG. 3 along section line 4 - 4 .
  • FIG. 4A is an expanded view of detail 4 A in FIG. 4 .
  • FIG. 5 is a top view of a thread cutting tool according one embodiment of the present invention.
  • FIG. 6 is an expanded view of the cutting end of the thread cutting tool of FIG. 5 .
  • FIG. 7 is front view of the thread cutting tool of FIG. 5 .
  • FIG. 8 is side view of the thread cutting tool of FIG. 5 .
  • FIG. 9 is a front view of a die for pressing threads according to one embodiment of the present invention.
  • FIG. 10 is a cross section of the die of FIG. 9 along section line 10 - 10 .
  • FIG. 11 is an expanded view of the detail B of FIG. 10 .
  • FIG. 12 is a front view of a top punch for use in conjunction with the die of FIG. 9 according to one embodiment of the present invention.
  • FIG. 13 is a side view of the top punch of FIG. 12 .
  • FIG. 14 is an expanded view of detail C shown in FIG. 12 .
  • FIG. 15 is a side view of a bottom punch for use in conjunction with the die of FIG. 9 according to one embodiment of the present invention.
  • FIG. 16 is a cross section of the bottom punch of FIG. 15 along section line 302 .
  • FIG. 17 is a side view of a core rod according to one embodiment of the present invention.
  • any numerical range recited herein is intended to include all sub-ranges subsumed therein.
  • a range of “1 to 10” is intended to include all sub-ranges between (and including) the recited minimum value of 1 and the recited maximum value of 10, that is, having a minimum value equal to or greater than 1 and a maximum value of equal to or less than 10.
  • the fixed cutter bit 10 has a mandrel 12 with a threaded end 14 .
  • the threaded end 14 mates with a rotating hollow drill pipe (not shown) which is connected to other rotating equipment of an earth-boring machine.
  • the lower end of the fixed cutter bit may have one or more cutting edges 16 , often equipped with cutting inserts 18 .
  • Cutting inserts 18 may be brazed onto the cutting edge or attached by any suitable means known to those skilled in art.
  • Junk slots 20 which allow cuttings and fluid to flow upward past the rotating cutter bit 10 may separate the cutting edges 16 .
  • One or more ducts 22 exit about the exterior of a lower portion of the fixed cutter bit 10 .
  • the ducts 22 are in fluid communication with the rotating hollow drill pipe (not shown) connected to a threaded portion 14 of the mandrel 12 .
  • Threaded nozzles 30 may be inserted into an outer end 24 of the duct 22 .
  • the outer end 24 of the duct 22 may also have a countersunk portion 26 so that the threaded nozzle 30 is recessed into the duct 22 .
  • the threaded nozzle 30 comprises a body 32 disposed about a longitudinal axis 40 .
  • the threaded nozzle has an inlet end 34 and a discharge end 36 .
  • External threads 50 are circumferentially located at least about a portion of the exterior face 38 of the body 32 of the threaded nozzle 30 .
  • a hex head 60 may be located at the discharge end 36 of the threaded nozzle 30 .
  • any configuration of screw or bolt head may be used including a recess in the discharge end 36 for receiving a driver bit.
  • a nozzle bore 70 extends through the body 32 of the threaded nozzle 30 .
  • the nozzle bore 70 may be centered about the longitudinal axis 40 extending axially through the threaded nozzle 30 .
  • FIG. 4 shows a cross section of the nozzle of FIG. 3 along section line 4 - 4 .
  • the nozzle bore 70 may have a flared portion 72 at an inlet end 34 of the threaded nozzle 30 .
  • a detail view of Section A of FIG. 4 is shown in FIG. 4A .
  • the external threads 50 have a leading face 54 and a trailing face 52 .
  • a flat or radiused transition between the leading face 54 and trailing face 52 is located at the radially outermost portion of the threads 50 .
  • Between each thread 50 is an undercut 80 .
  • the threaded nozzle may be made from tungsten carbide-cobalt or other material which is pressed, then sintered.
  • carbides including tungsten carbide, titanium carbide and tantalum carbide, aluminum oxide, titanium nitride, cubic boron nitride, and including ceramics, and alloys and cermets of these materials.
  • Suitable binder materials for these materials includes, by way of example, cobalt, copper, iron and nickel.
  • the external threads of the threaded nozzle are formed in the green threaded nozzle blank prior to sintering.
  • the term “green” refers to powdered material that has been pressed but not sintered.
  • threads are machined into the threaded nozzle blank which has already undergone a first forming or pressing process to make the general shape of the nozzle.
  • the thread cutting tool 100 shown in FIGS. 5-8 may be used in a turning operation to machine external threads into the nozzle blank.
  • nozzle blank refers to a nozzle made by a pressing and sintering process which has been pressed but not sintered and includes a green nozzle.
  • the thread cutting tool 100 has a shank 110 and cutting end 120 for cutting the external threads of a green threaded nozzle.
  • Cutting end 120 comprises a cutting tip 130 .
  • Extending from the cutting tip 130 is a projection 140 to create an appropriately sized undercut 80 between each external thread.
  • the undercut 80 aides in the sintering process in at least one respect by reducing cracks in the finished product.
  • the threads are machined into the nozzle blank in the pre-sintered stated. This can be done utilizing equipment such as a CNC machine or manual lathe, CNC or manual mill, thread die or other turning equipment.
  • the nozzle blank may be held by mandrels, a vacuum apparatus or other gripping assembly to allow machining.
  • the thread cutting tool 100 may be wholly or partially made from a hardened material such as diamond (PCD), boron nitride, tungsten carbide, or ceramic.
  • the thread cutting tool 100 may also be coated with, for example, titanium nitride. Additionally, the thread cutting tool 100 may be a tool like that shown in FIGS. 5-8 but may also be a cutting wheel.
  • threaded nozzles 30 and insert cutter bits may also accommodate a locking mechanism, for example, a pin.
  • the threaded nozzles 30 may accommodate such locking mechanism by having, for example, a notch in the hex head 60 or a slot running axially through the external threads 50 and remainder of a threaded nozzle.
  • threads are pressed into a nozzle using a die.
  • a die 150 like that shown in FIG. 9-11 may be used to press threads into a nozzle blank.
  • the die 150 may have a split insert 160 comprising two opposing segments 162 , 164 .
  • the split insert 160 may have a generally cylindrical shape with the exception of planar faces 168 , 170 on each opposing segment 162 , 164 .
  • Each opposing segment 162 , 164 has a thread forming section 172 , 174 on its respective interior face 176 , 178 . As best seen in FIG.
  • the split insert 160 is inserted into sleeve 190 .
  • Sleeve 190 has an interior face 192 which is congruently shaped to mate with the exterior surface 180 of the split insert 160 .
  • Planar surfaces 168 , 170 abut the interior face 192 of the sleeve 190 to prevent rotation of the split insert 160 .
  • the die 150 has a top end 152 and a bottom end 154 .
  • the top end 152 has a top end punch opening 156 .
  • the bottom end 154 has a bottom end punch opening 158 .
  • top punch 200 may be inserted into the top end punch opening 156 .
  • the die 150 is then filled with a predetermined amount of powdered metal or ceramic material.
  • Bottom punch 300 shown in FIGS. 15-16 , may then be inserted into the bottom end punch opening 158 .
  • a core rod 400 extends through the bore of the bottom punch 300 and contact the top punch 200 .
  • Threaded blanks produced by the green machining or green pressing processes described above have significant advantages over other threaded nozzles.
  • the threaded nozzles of the present invention are less time consuming and less costly to produce than other nozzles due in large part to the net shape of the green threaded nozzle being closer to the ultimate shape of the final product.
  • the threaded nozzles of the present invention are also believed to have several physical improvements over other threaded nozzles.
  • the threaded nozzles of the present invention are believed to have higher edge strength in the external threads than other threaded nozzles due to an increased amount of cobalt on the surface of the threaded nozzle since cobalt migrates to the surface during the sintering process.
  • the external threads produced by the pre-sintering machining or pressing processes of the present invention also have an increased surface roughness (Ra) which in improves friction between the mating surface of the nozzle and the bit.
  • surface roughness refers to the measure of finer surface irregularities in an article.
  • Ra refers to the arithmetic average of the surface irregularities, namely surface peak and valleys, expressing in microinches.
  • the Ra value for threads of the present invention is, for example, at least 40 microinches, for example greater than 50 microinches, for example, about 55 microinches to about 65 microinches.
  • the increased friction decreases the probability that the bit will loosen during drilling.
  • the pre-sintered threads also have less residual stresses than a hard-ground thread making the nozzles of the present invention tougher, less susceptible to cracking and more damage tolerant.
  • a shaped nozzle according to the present invention was compared to a nozzle with machined threads.
  • the shaped nozzle had a mean surface roughness of 57 microinches.
  • the machined nozzle had a mean surface roughness of 34 microinches.
  • Each nozzle was torque tested after being tightened to 80 psi.
  • the shaped nozzle required and average of 72 psi to release while the machined nozzle released at 66 psi.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
US12/146,704 2008-06-26 2008-06-26 Threaded nozzle for a cutter bit Abandoned US20090321145A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US12/146,704 US20090321145A1 (en) 2008-06-26 2008-06-26 Threaded nozzle for a cutter bit
GB1021832A GB2473576A (en) 2008-06-26 2009-05-20 Threaded nozzle for a cutter bit
PCT/US2009/044619 WO2009158080A1 (en) 2008-06-26 2009-05-20 Threaded nozzle for a cutter bit
CN2009801238404A CN102076925A (zh) 2008-06-26 2009-05-20 用于切削刀头的带螺纹的喷嘴
DE112009001398T DE112009001398T5 (de) 2008-06-26 2009-05-20 Gewindedüse für einen Schneidmeißel
BRPI0910216A BRPI0910216A2 (pt) 2008-06-26 2009-05-20 bocal roscado para uma ferramenta de corte

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/146,704 US20090321145A1 (en) 2008-06-26 2008-06-26 Threaded nozzle for a cutter bit

Publications (1)

Publication Number Publication Date
US20090321145A1 true US20090321145A1 (en) 2009-12-31

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ID=41444863

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/146,704 Abandoned US20090321145A1 (en) 2008-06-26 2008-06-26 Threaded nozzle for a cutter bit

Country Status (6)

Country Link
US (1) US20090321145A1 (de)
CN (1) CN102076925A (de)
BR (1) BRPI0910216A2 (de)
DE (1) DE112009001398T5 (de)
GB (1) GB2473576A (de)
WO (1) WO2009158080A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017127356A1 (en) * 2016-01-20 2017-07-27 Baker Hughes Incorporated Nozzle assemble including shape memory materrials for earth-boring tools and related methods
US10280479B2 (en) 2016-01-20 2019-05-07 Baker Hughes, A Ge Company, Llc Earth-boring tools and methods for forming earth-boring tools using shape memory materials
US10487589B2 (en) 2016-01-20 2019-11-26 Baker Hughes, A Ge Company, Llc Earth-boring tools, depth-of-cut limiters, and methods of forming or servicing a wellbore
US10508323B2 (en) 2016-01-20 2019-12-17 Baker Hughes, A Ge Company, Llc Method and apparatus for securing bodies using shape memory materials

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5983475B2 (ja) * 2013-03-14 2016-08-31 三菱マテリアル株式会社 掘削工具
US10323464B1 (en) * 2018-04-04 2019-06-18 Saudi Arabian Oil Company Wellbore drill bit nozzle
CN110593766A (zh) * 2019-10-18 2019-12-20 中国石油集团渤海钻探工程有限公司 一种可钻式水眼
CN114856453B (zh) * 2022-07-06 2022-09-09 胜利油田万和石油工程技术有限责任公司 一种带有快速拆装式喷嘴的pdc钻头

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4542798A (en) * 1984-01-31 1985-09-24 Reed Rock Bit Company Nozzle assembly for an earth boring drill bit
US4567954A (en) * 1983-12-02 1986-02-04 Norton Christensen, Inc. Replaceable nozzles for insertion into a drilling bit formed by powder metallurgical techniques and a method for manufacturing the same
US4603750A (en) * 1984-10-02 1986-08-05 Hughes Tool Company - Usa Replaceable bit nozzle
US4667756A (en) * 1986-05-23 1987-05-26 Hughes Tool Company-Usa Matrix bit with extended blades
US5658285A (en) * 1994-10-28 1997-08-19 Jbs S.A. Rehabitable connecting-screw device for a bone joint, intended in particular for stabilizing at least two vertebrae
US6244364B1 (en) * 1998-01-27 2001-06-12 Smith International, Inc. Earth-boring bit having cobalt/tungsten carbide inserts
US6332503B1 (en) * 1992-01-31 2001-12-25 Baker Hughes Incorporated Fixed cutter bit with chisel or vertical cutting elements
US6413472B1 (en) * 1999-08-12 2002-07-02 Injex Corporation Method of manufacturing screws
US6869111B2 (en) * 2000-12-04 2005-03-22 Sumitomo Metal Industries, Ltd. Lubricating coating composition suitable for lubrication of a threaded joint
US20070102198A1 (en) * 2005-11-10 2007-05-10 Oxford James A Earth-boring rotary drill bits and methods of forming earth-boring rotary drill bits
US20070264100A1 (en) * 2004-11-19 2007-11-15 Nagoya Industrial Science Research Institute Multi-Pitch Screw and Method and Apparatus for manufacturing Multi-Pitch Screw
US20080050198A1 (en) * 2006-08-23 2008-02-28 Thoms Ayrle Fastening element for hard constructional component
US7681668B2 (en) * 2007-03-30 2010-03-23 Baker Hughes Incorporated Shrink-fit sleeve assembly for a drill bit, including nozzle assembly and method therefor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2597087Y (zh) * 2002-12-19 2004-01-07 葫芦岛锌厂 一种用于气体雾化法制造细锌粉末的喷嘴
US7116794B2 (en) * 2004-11-04 2006-10-03 Patrik Westerkull Hearing-aid anchoring element
US20080011519A1 (en) * 2006-07-17 2008-01-17 Baker Hughes Incorporated Cemented tungsten carbide rock bit cone

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4567954A (en) * 1983-12-02 1986-02-04 Norton Christensen, Inc. Replaceable nozzles for insertion into a drilling bit formed by powder metallurgical techniques and a method for manufacturing the same
US4542798A (en) * 1984-01-31 1985-09-24 Reed Rock Bit Company Nozzle assembly for an earth boring drill bit
US4603750A (en) * 1984-10-02 1986-08-05 Hughes Tool Company - Usa Replaceable bit nozzle
US4667756A (en) * 1986-05-23 1987-05-26 Hughes Tool Company-Usa Matrix bit with extended blades
US6332503B1 (en) * 1992-01-31 2001-12-25 Baker Hughes Incorporated Fixed cutter bit with chisel or vertical cutting elements
US5658285A (en) * 1994-10-28 1997-08-19 Jbs S.A. Rehabitable connecting-screw device for a bone joint, intended in particular for stabilizing at least two vertebrae
US6244364B1 (en) * 1998-01-27 2001-06-12 Smith International, Inc. Earth-boring bit having cobalt/tungsten carbide inserts
US6413472B1 (en) * 1999-08-12 2002-07-02 Injex Corporation Method of manufacturing screws
US6869111B2 (en) * 2000-12-04 2005-03-22 Sumitomo Metal Industries, Ltd. Lubricating coating composition suitable for lubrication of a threaded joint
US20070264100A1 (en) * 2004-11-19 2007-11-15 Nagoya Industrial Science Research Institute Multi-Pitch Screw and Method and Apparatus for manufacturing Multi-Pitch Screw
US20070102198A1 (en) * 2005-11-10 2007-05-10 Oxford James A Earth-boring rotary drill bits and methods of forming earth-boring rotary drill bits
US20080050198A1 (en) * 2006-08-23 2008-02-28 Thoms Ayrle Fastening element for hard constructional component
US7681668B2 (en) * 2007-03-30 2010-03-23 Baker Hughes Incorporated Shrink-fit sleeve assembly for a drill bit, including nozzle assembly and method therefor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017127356A1 (en) * 2016-01-20 2017-07-27 Baker Hughes Incorporated Nozzle assemble including shape memory materrials for earth-boring tools and related methods
US10053916B2 (en) 2016-01-20 2018-08-21 Baker Hughes Incorporated Nozzle assemblies including shape memory materials for earth-boring tools and related methods
US10280479B2 (en) 2016-01-20 2019-05-07 Baker Hughes, A Ge Company, Llc Earth-boring tools and methods for forming earth-boring tools using shape memory materials
US10487589B2 (en) 2016-01-20 2019-11-26 Baker Hughes, A Ge Company, Llc Earth-boring tools, depth-of-cut limiters, and methods of forming or servicing a wellbore
US10508323B2 (en) 2016-01-20 2019-12-17 Baker Hughes, A Ge Company, Llc Method and apparatus for securing bodies using shape memory materials

Also Published As

Publication number Publication date
DE112009001398T5 (de) 2011-05-12
GB2473576A (en) 2011-03-16
GB201021832D0 (en) 2011-02-02
CN102076925A (zh) 2011-05-25
BRPI0910216A2 (pt) 2016-04-12
WO2009158080A1 (en) 2009-12-30

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AS Assignment

Owner name: KENNAMETAL INC., PENNSYLVANIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:FISHER, BRADLEY B.;SERRANO, HUGO;REEL/FRAME:021154/0853;SIGNING DATES FROM 20080623 TO 20080624

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION