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Class Information
Number: 175/435
Name: Boring or penetrating the earth > Bit or bit element > Specific or diverse material > Welded, brazed, or soldered
Description: Apparatus in which portions of the bit are connected together by (1) locally heating the parts to a fluid state and allowing the base metals to flow together with or without the addition of other molten metal or (2) connecting the parts by means of a dissimilar fluid metal having a lower melting point.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8701799 Drill bit cutter pocket restitution Apr. 22, 2014
8689911 Cutter and cutting tool incorporating the same Apr. 8, 2014
8689913 Polycrystalline diamond compact including a substrate having a raised interfacial surface bonded to a leached polycrystalline diamond table, and applications therefor Apr. 8, 2014
8672061 Polycrystalline ultra-hard compact constructions Mar. 18, 2014
8602133 Tool with welded cemented metal carbide inserts welded to steel and/or cemented metal carbide Dec. 10, 2013
8522646 Expandable earth boring apparatus using impregnated and matrix materials for enlarging a borehole Sep. 3, 2013
8517123 Milling cap for a polycrystalline diamond compact cutter Aug. 27, 2013
8439137 Superabrasive compact including at least one braze layer thereon, in-process drill bit assembly including same, and method of manufacture May. 14, 2013
8365845 High impact resistant tool Feb. 5, 2013
8360176 Brazing methods for PDC cutters Jan. 29, 2013
8353974 Superabrasive elements, methods of manufacturing, and drill bits including same Jan. 15, 2013
8342268 Tough carbide bodies using encapsulated carbides Jan. 1, 2013
8268452 Bonding agents for improved sintering of earth-boring tools, methods of forming earth-boring tools and resulting structures Sep. 18, 2012
8240403 Earth-boring tools with improved retention of cutting elements installed within pockets Aug. 14, 2012
8210287 Mining core drill bit and method of making thereof Jul. 3, 2012
8202335 Superabrasive elements, methods of manufacturing, and drill bits including same Jun. 19, 2012
8176825 Brazed rotary cutting tool, an insert for a brazed rotary cutting tool, and methods for manufacturing the same May. 15, 2012
8162082 Superabrasive compact including multiple superabrasive cutting portions, methods of making same, and applications therefor Apr. 24, 2012
8104550 Methods for applying wear-resistant material to exterior surfaces of earth-boring tools and resulting structures Jan. 31, 2012
8066087 Thermally stable ultra-hard material compact constructions Nov. 29, 2011
8061454 Ultra-hard and metallic constructions comprising improved braze joint Nov. 22, 2011
8028774 Thick pointed superhard material Oct. 4, 2011
8016057 Erosion resistant subterranean drill bits having infiltrated metal matrix bodies Sep. 13, 2011
7997358 Bonding of cutters in diamond drill bits Aug. 16, 2011
7950746 Attack tool for degrading materials May. 31, 2011
7926597 Fixed cutter bit and blade for a fixed cutter bit and methods for making the same Apr. 19, 2011
7909121 Polycrystalline ultra-hard compact constructions Mar. 22, 2011
7861806 Shank structure for rotary drill bits Jan. 4, 2011
7842111 Polycrystalline diamond compacts, methods of fabricating same, and applications using same Nov. 30, 2010
7779901 Downhole debris catcher and associated mill Aug. 24, 2010
7775287 Methods of attaching a shank to a body of an earth-boring drilling tool, and tools formed by such methods Aug. 17, 2010
7757793 Thermally stable polycrystalline ultra-hard constructions Jul. 20, 2010
7669674 Degradation assembly Mar. 2, 2010
7628233 Carbide bolster Dec. 8, 2009
7600589 Rotary drill bits Oct. 13, 2009
7597159 Drill bits and drilling tools including abrasive wear-resistant materials Oct. 6, 2009
7588102 High impact resistant tool Sep. 15, 2009
7549491 Hard material bit Jun. 23, 2009
7487849 Thermally stable diamond brazing Feb. 10, 2009
7472764 Rotary drill bit shank, rotary drill bits so equipped, and methods of manufacture Jan. 6, 2009
7392865 Randomly-oriented composite constructions Jul. 1, 2008
7389834 Braze alloys Jun. 24, 2008
7353893 Tool with a large volume of a superhard material Apr. 8, 2008
7347292 Braze material for an attack tool Mar. 25, 2008
7267187 Braze alloy and method of use for drilling applications Sep. 11, 2007
7243744 Randomly-oriented composite constructions Jul. 17, 2007
6959775 Drill bit Nov. 1, 2005
6926104 Drill crown Aug. 9, 2005
6843333 Impregnated rotary drag bit Jan. 18, 2005
6782958 Hardfacing for milled tooth drill bits Aug. 31, 2004

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