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1.发明授权
公开(公告)号：US4158394A
公开(公告)日：1979-06-19
申请号：US878155
申请日：1978-02-15
CPC分类号： E21B10/24 , F16C21/00 , F16C2352/00
摘要： A system for lubricating bearings in a drilling apparatus including a roller bit with at least one pivot and a cutting roller rotatably supported on the pivot by bearings. A cavity or chamber is formed in the roller bit for a non-compressible flushing liquid. The flow channel which communicates with the chamber at one end and the bearing cavity at the other end, provides a flow path for the flushing liquid to the bearing cavity. In one form the flushing liquid discharges to the bearing cavity at a point remote from an annular gap between the outer axial end face of the cutting roller and the roller bit. In another embodiment circumferentially spaced discharge ports are located between the bearings so that a portion of the flushing liquid is discharged to the environment and the remainder flows through the bearings and out the annular gap.
摘要翻译： 一种用于在钻孔设备中润滑轴承的系统，包括具有至少一个枢轴的滚子钻头和通过轴承可旋转地支撑在枢轴上的切割滚子。 用于不可压缩冲洗液体的滚子钻头中形成空腔或腔室。 在一端与腔室连通的流动通道和另一端的轴承腔体提供了用于冲洗液体到轴承腔的流路。 在一种形式中，冲洗液体在远离切割辊的外轴向端面和滚子钻头之间的环形间隙的点处排出到轴承腔。 在另一个实施例中，周向间隔开的排出口位于轴承之间，使得冲洗液体的一部分被排放到环境中，其余部分流过轴承并从环形间隙出来。
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公开(公告)号：US3847234A
公开(公告)日：1974-11-12
申请号：US33041273
申请日：1973-02-07
申请人： REED TOOL CO
发明人： SCHUMACHER P , MURDOCH H
CPC分类号： E21B10/24
摘要： A pressure relief device used in a drill bit lubrication system having a flexible membrane defining the outer portion of such lubrication system in a vent passage through the body of the drill bit with the flexible membrane including a puncture or other opening therethrough which seals the lubrication system at all pressure differentials below a pre-selected pressure differential and at such pre-selected pressure differential opens to relieve the pressure differential. The pressure relief device may be constructed to function in both directions, i.e., to relieve both excess pressure within the lubrication system and to relieve against excess external pressures, with the pre-selected relieving pressure differentials being the same or different in opposite directions. This abstract is neither intended to define the invention of the application which, of course, is measured by the claims, nor is it intended to be limiting as to the scope of the invention in any way.
摘要翻译： 一种在钻头润滑系统中使用的减压装置，其具有限定这种润滑系统的外部部分的柔性膜，该柔性膜在通过钻头主体的通气通道中，柔性膜包括穿过其的穿刺或其他开口，其密封润滑系统 在所有压力差低于预先选定的压力差的情况下，并且在这种预先选择的压力差打开以减轻压力差。 减压装置可以被构造成在两个方向上起作用，即，以减轻润滑系统内的过大压力并减轻过剩的外部压力，同时预选的减压压力在相反方向上相同或不同。 该摘要既不旨在定义本申请的发明，当然由权利要求书来衡量，也不旨在以任何方式限制本发明的范围。
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3.发明授权Vacuum, vacuum-pressure, or pressure circulation bit having jet-assisted vacuum 失效具有喷射辅助真空的真空，真空压力或压力循环钻头
公开(公告)号：US3958651A
公开(公告)日：1976-05-25
申请号：US600540
申请日：1975-07-31
摘要： Drill cuttings are effectively removed from the bottom of a bore before they can adversely affect the operation of the bit. The bit includes a body member rotatably supporting individual cutter members. A shield means projects from the body member proximate the cutter members. A first portion of the shield means has an outside diameter substantially equal to the outside diameter of the cutter means and substantially equal to the diameter of the bore and a second portion having an outside diameter substantially less than the outside diameter of the cutter members and substantially less than the diameter of the bore. A first passage extending through the bit is adapted to provide communication with a vacuum source to assist in removing the drill cuttings. A second passage extending along the length of the bit is adapted to provide communication with a gas pressure source to assist in removing the drill cuttings. The second passage has a portion in communication with the first passage to provide a pressurized jet-assist to the vacuum removal of the drill cuttings.
摘要翻译： 钻孔切屑可有效地从孔的底部移除，然后它们可能不利地影响钻头的操作。 钻头包括可旋转地支撑各个切割器构件的主体构件。 屏蔽件意味着从靠近切割器构件的本体构件突出。 屏蔽装置的第一部分具有基本上等于切割装置的外径的外径，并且基本上等于孔的直径，以及具有基本上小于切割器构件的外径的外径的第二部分，并且基本上 小于孔的直径。 延伸穿过钻头的第一通道适于提供与真空源的连通以帮助去除钻屑。 沿着钻头的长度延伸的第二通道适于提供与气体压力源的连通以帮助去除钻屑。 第二通道具有与第一通道连通的部分，以提供对钻屑真空去除的加压喷射辅助。
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公开(公告)号：US3830321A
公开(公告)日：1974-08-20
申请号：US33386973
申请日：1973-02-20
申请人： KENNAMETAL INC
发明人： MC KENRY R , COLLEGE M
IPC分类号： E21B10/02 , E21B10/26 , E21B10/62 , E21C25/04 , E21C35/18 , E21C35/183 , E21B9/12 , E21B9/18
CPC分类号： E21C35/183 , E21B10/02 , E21B10/26 , E21B10/62 , E21C25/04 , E21C2035/1816
摘要： An excavating tool and a bit for use therewith in which the bit is of small dimensions and is mounted in a block in which the bit is rotatable and which block is configured in such a manner that it can be welded to various types of holders so that a plurality of blocks and bits mounted on a holder make an excavating tool of selected style and size.
摘要翻译： 一种挖掘工具和与其一起使用的钻头，其中钻头是小尺寸的并且安装在钻头可旋转的块中，并且哪个块被构造成可以焊接到各种类型的保持器，使得 安装在支架上的多个块和钻头成为选定的风格和尺寸的挖掘工具。
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公开(公告)号：US5394952A
公开(公告)日：1995-03-07
申请号：US111356
申请日：1993-08-24
摘要： A roller cone drill bit is disclosed that leaves uncut a substantial formation core having a diameter from 10% to 25% of the bit gage diameter. The bit is designed to have normal size bearings, cone shell thickness and cutter protrusion to allow the use of standard drilling weights and RPM, thereby achieving a significant increase in drilling rate. When drilling abrasive formations, ultra hard cutting teeth are used in the cone apex to maintain the core diameter.
摘要翻译： 公开了一种滚子锥钻头，其不切割直径为钻头直径的10％至25％的实质地层岩心。 该钻头被设计成具有正常尺寸的轴承，锥形壳体厚度和切割器突起，以允许使用标准钻孔重量和RPM，从而实现钻井速率的显着增加。 当钻研磨结构时，在锥形顶端使用超硬切削齿以保持芯直径。
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公开(公告)号：US3887236A
公开(公告)日：1975-06-03
申请号：US37038873
申请日：1973-06-15
申请人： BECHTEL INT CORP
发明人： PATRICK JAMES G
摘要： A continuous mining machine for excavating an in-place mass of rock or other material having echeloned concentric cutter heads that remove rock or other material from annular concentric grooves, leaving bands of undisturbed material between the grooves cantilevered from the in-place mass, and a breaking device carried by the machine adjacent and behind the cutter head for breaking the undisturbed bands from the mass with an intermittent or continuous breaking force.
摘要翻译： 一种用于挖掘岩石或其他材料的现场质量的连续采矿机，其具有层叠的同心刀头，其从环形同心凹槽中移除岩石或其他材料，在未被干扰的材料带之间悬挂在从原地质量块悬伸的槽中，以及 由机器承载的切割装置，其与切割头相邻和后面，以断续或连续的断裂力将未受干扰的带从质量块中打破。
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7.发明授权Earth boring mechanism and coordinated pilot hole drilling and coring mechanisms 失效地球机械和协调的导孔孔钻孔和机械
公开(公告)号：US3565192A
公开(公告)日：1971-02-23
申请号：US3565192D
申请日：1968-08-27
申请人： FRANK W MCLARTY
发明人： MCLARTY FRANK W
摘要： A cylindrical member is lowerable through a drill pipe and latched thereto. Cutters carried on arms hinged to slots in the cylindrical member move outwardly under pressure of the drill fluid through gaps in the lower end of a shoe at the bottom of the drill pipe to underream under the shoe. The cylindrical member has a pilot bit at its lower end and a core barrel in its bore. Roller or diamond cutters may be used.
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公开(公告)号：US3424258A
公开(公告)日：1969-01-28
申请号：US3424258D
申请日：1967-11-13
发明人： NAKAYAMA YOSHIHIRO
CPC分类号： E21B10/04
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