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    Method of Applying Hardfacing Sheet
    53.
    发明申请
    Method of Applying Hardfacing Sheet 审中-公开
    施工表面处理方法

    公开(公告)号：US20110073233A1

    公开(公告)日：2011-03-31

    申请号：US12570934

    申请日：2009-09-30

    申请人： Jimmy W. Eason ,  John H. Stevens ,  Travis E. Puzz ,  James L. Overstreet

    发明人： Jimmy W. Eason ,  John H. Stevens ,  Travis E. Puzz ,  James L. Overstreet

    IPC分类号： B32B37/06

    CPC分类号： E21B10/46 ,  B23K31/02 ,  B23K2101/002 ,  Y10T156/10

    摘要： A method of hardfacing a bit using a hardfacing sheet. The hardfacing sheet includes a hardfacing composition in a carrier material. The sheet is placed on a portion of the bit body, the sheet is heated at a designated spot using a localized heating source. At the same time, oxygen is substantially purged from the zone adjacent the designated spot. The heat debinds the carrier material from the sheet leaving the hardfacing composition. Continued heating transforms the hardfacing composition into hardfacing that is fused to the bit body.

    摘要翻译： 使用表面硬化面硬化一点的方法。 表面硬化片包括载体材料中的表面硬化组合物。 片材放置在钻头体的一部分上，使用局部加热源将片材加热到指定的位置。 同时，氧气基本上从邻近指定点的区域清除。 热量将载体材料从片材上剥离出来，使其表面硬化。 持续加热将表面硬化组合物变形成与钻头体熔合的硬化面。

    METHODS FOR FORMING EARTH BORING TOOLS HAVING POCKETS FOR RECEIVING CUTTING ELEMENTS
    54.
    发明申请
    METHODS FOR FORMING EARTH BORING TOOLS HAVING POCKETS FOR RECEIVING CUTTING ELEMENTS 有权
    用于形成具有用于接收切割元件的口袋的接地工具的方法

    公开(公告)号：US20110030509A1

    公开(公告)日：2011-02-10

    申请号：US12908234

    申请日：2010-10-20

    申请人： John H. Stevens ,  Nicholas J. Lyons

    发明人： John H. Stevens ,  Nicholas J. Lyons

    IPC分类号： B23P15/28 ,  B23P17/00

    CPC分类号： E21B10/43 ,  Y10T29/49993

    摘要： Methods of forming cutting element pockets in earth-boring tools may include forming a first recess and a second recess. A filler material is disposed in the second recess to the form at least a portion of a back surface of the pocket. Methods of forming cutting element pockets in earth-boring tools may include orienting a rotating cutter generally parallel to a longitudinal axis of a cutting element pocket to be formed in a body of an earth-boring tool and machining the cutting element pocket in the earth-boring tool. Methods of forming earth-boring tools include forming a body comprising at least one blade and forming at least one cutting element pocket in the at least one blade.

    摘要翻译： 在钻孔工具中形成切割元件袋的方法可以包括形成第一凹部和第二凹部。 填充材料设置在第二凹部中以形成袋的后表面的至少一部分的形式。 在钻孔工具中形成切割元件袋的方法可以包括使大致平行于切割元件凹槽的纵向轴线的旋转刀具定向成在钻孔工具的主体中并且加工地球钻孔工具中的切割元件袋， 无聊的工具。 形成钻孔工具的方法包括形成包括至少一个叶片的主体并且在所述至少一个叶片中形成至少一个切割元件袋。

    INFILTRATED, MACHINED CARBIDE DRILL BIT BODY
    56.
    发明申请
    INFILTRATED, MACHINED CARBIDE DRILL BIT BODY 有权
    渗透，加工硬质合金钻头机身

    公开(公告)号：US20100006345A1

    公开(公告)日：2010-01-14

    申请号：US12169820

    申请日：2008-07-09

    申请人： John H. Stevens

    发明人： John H. Stevens

    IPC分类号： E21B10/61

    CPC分类号： E21B10/00 ,  B22F7/062 ,  B22F2005/001 ,  B22F2998/10 ,  B22F3/04 ,  B22F3/1017 ,  B22F3/26 ,  B22F3/15

    摘要： Methods of forming bit bodies for earth-boring bits include assembling green components that have been infiltrated, brown components that have been infiltrated, or fully sintered components that have been infiltrated, and sintering the assembled components. Other methods include isostatically pressing a powder to form a green body substantially composed of a particle-matrix composite material, and sintering or hot isostatic pressing the green body or brown body to provide a bit body having a desired final density. Methods of forming earth-boring bits include providing a bit body substantially formed of a particle-matrix composite material and attaching a shank to the body. The body is provided by pressing a powder to form a green body and sintering the green body. Earth-boring bits include a unitary structure substantially formed of a particle-matrix composite material. The unitary structure includes a first region configured to carry cutters and a second region that includes a threaded pin. Earth-boring bits include a shank attached directly to a body substantially formed of a particle-matrix composite material.

    摘要翻译： 用于钻孔钻头的钻头体的方法包括组装已渗透的绿色部件，已经渗透的棕色部件，或已经渗透的完全烧结的部件，以及烧结组装的部件。 其他方法包括均匀地压制粉末以形成基本上由颗粒 - 基质复合材料组成的生坯，以及烧结或热等静压压生坯或棕色体以提供具有所需最终密度的钻头体。 形成钻孔钻头的方法包括提供基本上由颗粒 - 基质复合材料形成的钻头体并将柄连接到主体上。 通过按压粉末以形成生坯并烧结生坯体来提供身体。 钻孔钻头包括基本上由颗粒 - 基质复合材料形成的单一结构。 整体结构包括构造成承载切割器的第一区域和包括螺纹销的第二区域。 钻孔钻头包括直接连接到基本上由颗粒 - 基体复合材料形成的主体上的柄。

    EARTH-BORING BITS
    57.
    发明申请
    EARTH-BORING BITS 有权
    地球。

    公开(公告)号：US20080163723A1

    公开(公告)日：2008-07-10

    申请号：US12033960

    申请日：2008-02-20

    申请人： Prakash K. Mirchandani ,  Jimmy W. Eason ,  James J. Oakes ,  James C. Westhoff ,  Gabriel B. Collins ,  John H. Stevens ,  Steven G. Caldwell ,  Alfred J. Mosco

    发明人： Prakash K. Mirchandani ,  Jimmy W. Eason ,  James J. Oakes ,  James C. Westhoff ,  Gabriel B. Collins ,  John H. Stevens ,  Steven G. Caldwell ,  Alfred J. Mosco

    IPC分类号： C22C29/02

    CPC分类号： E21B10/46 ,  B22F2005/001 ,  B22F2998/00 ,  C22C1/1068 ,  C22C29/00 ,  C22C29/005 ,  C22C29/067 ,  B22F7/06

    摘要： The present invention relates to compositions and methods for forming a bit body for an earth-boring bit. The bit body may comprise hard particles, wherein the hard particles comprise at least one carbide, nitride, boride, and oxide and solid solutions thereof, and a binder binding together the hard particles. The binder may comprise at least one metal selected from cobalt, nickel, and iron, and, optionally, at least one melting point reducing constituent selected from a transition metal carbide in the range of 30 to 60 weight percent, boron up to 10 weight percent, silicon up to 20 weight percent, chromium up to 20 weight percent, and manganese up to 25 weight percent, wherein the weight percentages are based on the total weight of the binder. In addition, the hard particles may comprise at least one of (i) cast carbide (WC+W2C) particles, (ii) transition metal carbide particles selected from the carbides of titanium, chromium, vanadium, zirconium, hafnium, tantalum, molybdenum, niobium, and tungsten, and (iii) sintered cemented carbide particles.

    摘要翻译： 本发明涉及用于形成钻头的钻头体的组合物和方法。 钻头体可以包括硬质颗粒，其中硬颗粒包含至少一种碳化物，氮化物，硼化物及其氧化物和固体溶液，以及将硬颗粒结合在一起的粘合剂。 粘合剂可以包含选自钴，镍和铁中的至少一种金属，以及任选地至少一种选自30-60重量％范围内的过渡金属碳化物的熔点降低成分，至多10重量％的硼 ，高达20重量％的硅，至多20重量％的铬，以及至多25重量％的锰，其中重量百分数是基于粘合剂的总重量。 此外，硬颗粒可以包括（i）碳化钨（WC + W2C）颗粒，（ii）过渡金属碳化物颗粒中的至少一种，其选自钛，铬，钒，锆，铪，钽，钼， 铌和钨，和（iii）烧结的硬质合金颗粒。

    Methods and systems for compaction of powders in forming earth-boring tools
    58.
    发明申请
    Methods and systems for compaction of powders in forming earth-boring tools 有权
    成型镗孔工具粉末压实的方法和系统

    公开(公告)号：US20080156148A1

    公开(公告)日：2008-07-03

    申请号：US11646225

    申请日：2006-12-27

    申请人： Redd H. Smith ,  John H. Stevens

    发明人： Redd H. Smith ,  John H. Stevens

    IPC分类号： B21K5/04

    CPC分类号： B22F7/06 ,  C22C26/00 ,  C22C29/00 ,  E21B10/54

    摘要： Methods for forming bodies of earth-boring drill bits and other tools include milling a plurality of hard particles and a plurality of particles comprising a matrix material to form a mill product comprising powder particles, separating the particles into a plurality of particle size fractions. Some of the particles from the fractions may be combined to form a powder mixture, which may be pressed to form a green body. Additional methods include mixing a plurality of hard particles and a plurality of particles comprising a matrix material to form a powder mixture, and pressing the powder mixture with pressure having an oscillating magnitude to form a green body. In yet additional methods a powder mixture may be pressed within a deformable container to form a green body and drainage of liquid from the container is enabled as the powder mixture is pressed.

    摘要翻译： 用于形成钻孔钻头和其他工具的主体的方法包括铣削多个硬颗粒和多个包含基质材料的颗粒，以形成包含粉末颗粒的研磨产物，将颗粒分离成多个颗粒级分。 可以将来自级分的一些颗粒组合以形成粉末混合物，其可以被压制以形成生坯体。 附加方法包括混合多个硬颗粒和多个包含基质材料的颗粒以形成粉末混合物，并且以具有振荡大小的压力挤压粉末混合物以形成生坯体。 在另外的方法中，粉末混合物可以在可变形容器内压制以形成生坯，并且当粉末混合物被压制时，能够从容器排出液体。

    System for cardiac procedures
    60.
    发明授权
    System for cardiac procedures 失效
    心脏手术系统

    公开(公告)号：US5885238A

    公开(公告)日：1999-03-23

    申请号：US453426

    申请日：1995-05-30

    申请人： John H. Stevens ,  Philip C. Evard ,  Timothy R. Machold

    发明人： John H. Stevens ,  Philip C. Evard ,  Timothy R. Machold

    IPC分类号： A61B17/00 ,  A61B17/28 ,  A61B17/32 ,  A61F2/24 ,  A61F2/958 ,  A61M1/36 ,  A61M25/00 ,  A61M25/01 ,  A61M25/06 ,  A61M29/02 ,  A61M37/00 ,  A61M29/00

    CPC分类号： A61F2/2427 ,  A61B17/29 ,  A61F2/2433 ,  A61M1/3653 ,  A61M1/3659 ,  A61M25/0041 ,  A61M25/0147 ,  A61M25/0152 ,  A61M25/0662 ,  A61M25/10 ,  A61B17/320016 ,  A61B2017/00243 ,  A61B2018/00232 ,  A61B2018/00261 ,  A61F2/2436 ,  A61M2025/0031 ,  A61M2025/0078 ,  A61M2025/015 ,  A61M2025/0161 ,  A61M2025/028 ,  A61M2025/1047 ,  A61M2025/1052 ,  A61M2025/1077 ,  A61M2025/1095 ,  A61M2205/11 ,  A61M2205/366 ,  A61M2210/125 ,  A61M2210/127 ,  A61M25/0032 ,  A61M25/0125 ,  A61M25/1002

    摘要： A system for accessing a patient's cardiac anatomy which includes an endovascular aortic partitioning device that separates the coronary arteries and the heart from the rest of the patient's arterial system. The endovascular device for partitioning a patient's ascending aorta comprises a flexible shaft having a distal end, a proximal end, and a first inner lumen therebetween with an opening at the distal end. The shaft may have a preshaped distal portion with a curvature generally corresponding to the curvature of the patient's aortic arch. An expandable means, e.g. a balloon, is disposed near the distal end of the shaft proximal to the opening in the first inner lumen for occluding the ascending aorta so as to block substantially all blood flow therethrough for a plurality of cardiac cycles, while the patient is supported by cardiopulmonary bypass. The endovascular aortic partitioning device may be coupled to an arterial bypass cannula for delivering oxygenated blood to the patient's arterial system. The heart muscle or myocardium is paralyzed by the retrograde delivery of a cardioplegic fluid to the myocardium through patient's coronary sinus and coronary veins, or by antegrade delivery of cardioplegic fluid through a lumen in the endovascular aortic partitioning device to infuse cardioplegic fluid into the coronary arteries. The pulmonary trunk may be vented by withdrawing liquid from the trunk through an inner lumen of an elongated catheter. The cardiac accessing system is particularly suitable for removing the aortic valve and replacing the removed valve with a prosthetic valve.

    摘要翻译： 一种用于访问患者心脏解剖结构的系统，其包括将冠状动脉和心脏与患者动脉系统的其余部分分离的血管内主动脉分配装置。 用于分隔患者升主动脉的血管内装置包括具有远端，近端和其间的第一内腔的柔性轴，在远端具有开口。 轴可以具有预先形成的远端部分，其曲率通常对应于患者主动脉弓的曲率。 可膨胀装置，例如 靠近靠近第一内腔中的开口的轴的远端附近的气囊，用于闭塞升主动脉，以便阻止基本上所有的血液通过其进行多个心动周期，同时患者由体外循环 。 血管内主动脉分配装置可以联接到动脉旁路套管，用于将氧合血液输送到患者的动脉系统。 通过患者的冠状窦和冠状静脉逆行递送心脏停搏液到心肌，或者通过血管内主动脉分配装置的内腔顺序递送心脏停跳液，将心肌或心肌瘫痪，将心脏停搏液注入冠状动脉 。 可以通过从细长的导管的内腔中抽出液体来排出肺动脉干。 心脏存取系统特别适用于去除主动脉瓣并用假体瓣替换去除的瓣膜。