1
Mark P Blackman, Jay S Bird, Michael S Beaton: Rotary drill bit with improved cutter and seal protection. Dresser, Baker & Boots, September 26, 1995: US05452771 (112 worldwide citation)

A rotary cone drill bit for forming a borehole having a body with an underside and an upper end portion adapted for connection to a drill string. The drill bit rotates around a central axis of the body. A number of angularly-spaced arms are integrally formed with the body and depend therefrom. Each ...


2
Mark P Blackman, Jay S Bird, Michael S Beaton: Rotary drill bit with improved cutter and seal protection. Dresser, Baker & Botts, May 21, 1996: US05518077 (106 worldwide citation)

A rotary cone drill bit for forming a borehole having a body with an underside and an upper end portion adapted for connection to a drill string. The drill bit rotates around a central axis of the body. A number of angularly-spaced arms are integrally formed with the body and depend therefrom. Each ...


3
Mark P Blackman, Jay S Bird, Michael S Beaton: Rotary drill bit with improved cutter. Dresser, Baker & Botts, July 4, 1995: US05429200 (59 worldwide citation)

A rotary cone drill bit for forming a borehole having a body with an underside and an upper end portion adapted for connection to a drill string. The drill bit rotates around a central axis of the body. A number of angularly-spaced arms are integrally formed with the body and depend therefrom. Each ...


4
Michael S Beaton, Jay S Bird: Rotary cone drill bit modular arm. Dresser, Baker & Botts L, June 24, 1997: US05641029 (39 worldwide citation)

A drill bit (20) for a modular arm (70) is provided. The modular arm (70) includes an inside surface (76) having first (144) and second (146) angled surfaces whose lower portions form an inwardly projecting wedge (125). A curved throat relief area (87) connects to a lower edge (152) of the wedge (12 ...


5
Jay S Bird: Gage surface and method for milled tooth cutting structure. Dresser, Baker & Botts L, December 3, 1996: US05579856 (37 worldwide citation)

A milled tooth (22) is provided having a back face (38), including an upper back face surface (58) and a lower back face surface (60). A tip or top surface (36) is provided below the upper back face surface (58). The upper back face surface (58) is in a recessed position relative to the lower back f ...


6
Jay S Bird: Surface protection method and article formed thereby. Dresser, Daniel Rubin, March 21, 1989: US04814234 (32 worldwide citation)

The disclosed invention describes a method for cladding surfaces of an earth boring apparatus, or the like, with a hardfacing material having an entrained, or encapsulated, heavy metal refractory carbide. The method includes heating the surface to the incipient melting temperature and applying a mol ...


7
Jay S Bird: Surface protection method and article formed thereby. Dresser, Daniel Rubin, July 3, 1990: US04938991 (30 worldwide citation)

The disclosed invention describes a method for cladding surfaces of an earth boring apparatus, or the like, with a hardfacing material having an entrained, or encapsulated, heavy metal refractory carbide. The method includes heating the surface to the incipient melting temperature and applying a mol ...


8
Jay S Bird: Wear protection on a rock bit. Halliburton Energy Services, Robert O Groover III, May 20, 2003: US06564884 (14 worldwide citation)

Using inserts which are welded in place allows the use of hardfacing in the immediate vicinity of the inserts. Areas of high wear, such as cutting structures and gage areas, can use a combination of ultra-hard inserts with hardfacing for protection against wear. The inserts slows wear, while the har ...


9
Jay S Bird: Drill bits and other downhole tools with hardfacing having tungsten carbide pellets and other hard materials and methods of making thereof. Halliburton Energy Services, Baker Botts L, December 4, 2012: US08322466 (3 worldwide citation)

A hardfacing is provided to protect surfaces of drill bits and other downhole tools. The hardfacing may include tungsten carbide particles or pellets formed with an optimum weight percentage of binding material and dispersed within and bonded to a matrix deposit. The tungsten carbide particles may b ...


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