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1. 发明授权

US4158973A Rolling cutter drill bit 失效
标题翻译：滚刀钻头
公开(公告)号：US4158973A
公开(公告)日：1979-06-26
申请号：US886983
申请日：1978-03-15
申请人： Percy W. Schumacher, Jr. , James A. Minton, Jr. , Frank A. Hollingshead
发明人： Percy W. Schumacher, Jr. , James A. Minton, Jr. , Frank A. Hollingshead
IPC分类号： B23P15/28 , E21B10/20 , B21K5/02
CPC分类号： E21B10/20 , B23P15/28
摘要： A rolling cutter drill bit is disclosed which utilizes a main body having a threaded end for connection in a drill string, and a plurality of rolling cutter assemblies joined to the bottom of the bit body by means such as electron beam welding.
摘要翻译：公开了一种利用具有用于连接在钻柱中的螺纹端的主体以及通过诸如电子束焊接的方法连接到钻头体的底部的多个滚切刀组件的轧制刀具钻头。

2. 发明授权

US4749053A Drill bit having a thrust bearing heat sink 失效
标题翻译：钻头具有推力轴承散热器
公开(公告)号：US4749053A
公开(公告)日：1988-06-07
申请号：US832190
申请日：1986-02-24
申请人： Frank A. Hollingshead
发明人： Frank A. Hollingshead
IPC分类号： E21B10/22 , E21B36/00
CPC分类号： E21B10/22 , E21B36/001
摘要： A roller cutter drill bit adapted to drill bores in the earth comprising a bit body of steel having a plurality of bearing journals at its lower end, and a plurality of roller cutters, each having a recess therein receiving one of the journals. A radial bearing asembly for each roller cutter rotatably mounts the roller cutter on the journal, and an axial or thrust bearing assembly at the free end of each journal carries axial forces applied to the roller cutter during drilling, with the thrust bearing assembly thus being subject to rotary frictional forces and heating upon rotation of the drill bit during drilling. According to this invention, a heat dissipation member formed of material having higher thermal conductivity than steel is incorporated into the bit body. This material extends from the free end toward the attached end of the journal for conducting heat away from the thrust bearing assembly, thereby reducing bearing temperatures and providing longer bearing life.
摘要翻译：一种用于在地球上钻孔的滚刀切割钻头，包括在其下端具有多个轴承轴颈的钢头钻头体，以及多个辊切割器，每个滚子切割器具有容纳其中一个轴颈的凹部。每个滚子切割机的径向轴承组件可旋转地将滚子切割器安装在轴颈上，并且在每个轴颈的自由端处的轴向或推力轴承组件在钻孔期间承受施加到滚子切割器的轴向力，因此推力轴承组件被对象在钻孔期间旋转摩擦力和旋转钻头时的加热。根据本发明，由具有比钢高的导热性的材料形成的散热部件被结合到钻头体中。该材料从自由端延伸到轴颈的附接端，用于将热量从推力轴承组件传导出去，从而降低轴承温度并提供较长的轴承寿命。

3. 发明授权

US4080091A Drill bit 失效
标题翻译：钻头
公开(公告)号：US4080091A
公开(公告)日：1978-03-21
申请号：US738413
申请日：1976-11-03
申请人： Frank A. Hollingshead
发明人： Frank A. Hollingshead
IPC分类号： E21B10/18 , E21B10/20 , B23B51/06
CPC分类号： E21B10/18 , E21B10/20 , Y10T408/458
摘要： A rotary drill bit having a plurality of journal-mounted rotating cutters and jet passageways through which drilling fluid is discharged between the cutters is provided with removable nozzles for air or other drilling fluid. The nozzles are provided with a peripheral groove and secured in place in said passageways by the divided ends of a bifurcated retaining pin.
摘要翻译：具有多个轴颈安装的旋转切割器和喷射通道的旋转钻头通过钻孔流体在切割器之间排出而设置有用于空气或其它钻井流体的可移除喷嘴。喷嘴设置有周边槽，并且通过分叉的保持销的分割端固定在所述通道中的适当位置。

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