公开(公告)号：US5904075A

公开(公告)日：1999-05-18

申请号：US806074

申请日：1997-02-25

Applicant: David A. Buck

Inventor： David A. Buck

IPC: B25B13/50 ,  E21B19/16

CPC classification number: E21B19/164

Abstract: The present invention provides an improved power tong a body having with a rotating assembly. The power tong further has a plurality of jaw members positioned within the rotating assembly with two of the jaw members being pivoting jaws adapted to interlock when in a closed position. In an alternate embodiment, the improved power tong will have a compensating jaw assemble to limit the axial load placed on the tubular member being gripped.

Abstract translation: 本发明提供了具有旋转组件的本体的改进的动力钳。 动力钳还具有定位在旋转组件内的多个钳口构件，其中两个钳口构件是适于在处于关闭位置时互锁的枢转钳口。 在替代实施例中，改进的动力钳将具有补偿夹爪组合以限制放置在被夹紧​​的管状构件上的轴向载荷。

公开(公告)号：US4986146A

公开(公告)日：1991-01-22

申请号：US493009

申请日：1990-03-13

Applicant: David A. Buck

Inventor： David A. Buck

IPC: E21B19/16

CPC classification number: E21B19/164

Abstract: A camming member for power tongs is provided, comprising a body including a central opening formed therein, the body being rotatable about a center point within the central opening, the body further including a slot for positioning a tubular member within the central opening, the body further including at least one cam surface adjacent to the central opening, the cam surface being formed such that, constant compressional force is applied to the tubular member by jaws urged inward by the cam surface. It is preferable that the body is ring-shaped and is provided with gear teeth radially extending from the outer periphery of the body.

Abstract translation: 提供一种用于动力钳的凸轮构件，其包括主体，该主体包括形成在其中的中心开口，该主体可绕中心开口内的中心点旋转，该主体还包括用于将管状构件定位在中心开口内的槽， 还包括与所述中心开口相邻的至少一个凸轮表面，所述凸轮表面形成为使得通过由所述凸轮表面向内推动的夹爪将恒定的压缩力施加到所述管状构件。 优选地，本体是环形的并且设置有从主体的外周径向延伸的齿轮齿。

公开(公告)号：US4631987A

公开(公告)日：1986-12-30

申请号：US760257

申请日：1985-07-29

Applicant: David A. Buck

Inventor： David A. Buck

IPC: E21B19/16 ,  B25B17/00

CPC classification number: E21B19/164 ,  Y10T279/188 ,  Y10T279/1961

Abstract: A power tong having a frame with an open throat at one end and a pipe gripping mechanism situated for rotation within the frame, carrying three pipe gripping dies about equally spaced around the longitudinal axis of the pipe. Only one of the pipe gripping dies is driven toward the pipe by cam action of the rotating mechanism. The other two pipe gripping dies pivot and achieve their pipe loading capability from the action of the cam driven pipe gripping die. Once the rotation of the pipe has been achieved, the rotating mechanism returns to such a position that the open throat of the rotating mechanism coincides with the open throat of the frame, whereby the pipe, having been spun, can then be released.

Abstract translation: 一种动力钳，其具有在一端具有开口喉部的框架，以及位于框架内旋转的管夹持机构，围绕管的纵向轴线围绕等间距地承载三个管夹持模具。 通过旋转机构的凸轮作用，只有一个管夹模被朝向管驱动。 另外两个管夹具可以从凸轮驱动的管夹头的作用中枢转并实现其管装载能力。 一旦已经实现了管道的旋转，则旋转机构返回到这样的位置，即旋转机构的开口喉部与框架的开口喉部重合，从而可以释放已经纺丝的管道。

公开(公告)号：US6050156A

公开(公告)日：2000-04-18

申请号：US897185

申请日：1997-07-21

Applicant: David A. Buck

Inventor： David A. Buck

IPC: E21B19/16 ,  B25B17/00

CPC classification number: E21B19/164

Abstract: The present invention relates to power tongs used in the oil and gas industry to make up and break apart the joints on drill pipe and other tubular members. The invention provides a selectively releasable braking apparatus for a power tong. The selectively releasable braking apparatus comprises a braking ring operatively connected to a cage plate of the power tong and a braking surface mechanically connected to the cage plate. The apparatus further has a gripping device capable of selectively gripping and holding the braking surface and has a gear train transferring torque from said brake ring to said braking surface. Power tongs also typically have a throat, a ring gear with an opening, and a cage plate with an opening. The present invention further provides an apparatus for aligning the openings in the ring gear and the cage plate with the throat of the power tong and remotely reversing the direction of rotation of the ring gear and cage plate. The apparatus comprises a stop device preventing relative rotation of the ring gear and the cage plate until a preselected torque load is placed on said stop device. The apparatus also has a selectively releasable cage plate brake and a cage plate latch selectively preventing rotation of the cage plate.

Abstract translation: 本发明涉及用于石油和天然气工业中的动力钳，用于构成和分解钻杆和其它管状构件上的接头。 本发明提供一种用于动力钳的可选择性释放的制动装置。 可选择性地释放的制动装置包括可操作地连接到动力钳的保持架的制动环和机械地连接到保持架板的制动表面。 该装置还具有能够选择性地夹持和保持制动表面的夹持装置，并且具有将扭矩从所述制动环传递到所述制动表面的齿轮系。 动力钳还通常具有喉部，带开口的环形齿轮和具有开口的笼板。 本发明还提供了一种用于将齿圈和保持架板中的开口与动力钳的喉部对准并远程反转环形齿轮和保持架的转动方向的装置。 该装置包括阻止环形齿轮和保持架板的相对旋转的止动装置，直到预定的扭矩负载被放置在所述止动装置上。 该装置还具有选择性地释放的笼板制动器和选择性地防止笼板旋转的笼板闩锁。

公开(公告)号：US5911796A

公开(公告)日：1999-06-15

申请号：US805422

申请日：1997-02-25

Applicant: David A. Buck

Inventor： David A. Buck

IPC: E21B19/16 ,  B25B13/50

CPC classification number: E21B19/161

Abstract: The present invention provides a jaw assembly and die insert for use in conventional power tongs, back-up power tongs, and similar tools. The die insert has a rear surface having a plurality of splines extending outwardly from the rear surface and forming a plurality of grooves between the splines. The die also has a front surface adapted to grip a tubular member and a keyway formed on the rear surface. A mating jaw member is provided which also has a front face of splines and grooves with a keyway which aligns with the die's keyway when the die is inserted into the jaw. A key is inserted into this combined keyway to prevent vertical forces from drawing the die out of the jaw member.

Abstract translation: 本发明提供一种用于常规动力钳，备用动力钳和类似工具的钳口组件和模具插入件。 模具插入件具有后表面，其具有从后表面向外延伸的多个花键，并且在花键之间形成多个凹槽。 模具还具有适于夹紧管状构件的前表面和形成在后表面上的键槽。 提供了一种配合钳口构件，其还具有花键和凹槽的前表面，当模具插入到钳口中时，具有与模具的键槽对准的键槽。 将一个钥匙插入该组合键槽中，以防止垂直的力将模具从夹爪构件中拉出。

公开(公告)号：US5704427A

公开(公告)日：1998-01-06

申请号：US542779

申请日：1995-10-13

Applicant: David A. Buck ,  Daniel S. Bangert ,  Philip J. O'Connor

Inventor： David A. Buck ,  Daniel S. Bangert ,  Philip J. O'Connor

IPC: E21B15/02 ,  E21B19/00 ,  E21B19/06

CPC classification number: E21B15/02 ,  E21B19/002

Abstract: The present invention provides a device for removing well casing from plugged and abandoned oil wells. The invention includes a unitary platform structure sufficiently small that the structure may be transported by boat to offshore well platforms and be lifted onto the well platform as a single unit. The platform also has a center station with an opening allowing the casing to pass therethrough. The device further includes at least one lifting means, which lifts the well casing through the center station. The present invention will serve many of the purposes of much larger drilling rigs or work over rigs typically employed on oil and gas well platforms. The present invention will be much quicker to transport and requires considerably less set-up time than dig rigs or work over rigs.

Abstract translation: 本发明提供了一种用于从堵塞和废弃的油井中移除井套管的装置。 本发明包括足够小的单一平台结构，使得结构可以通过船运送到离岸井平台，并作为单个单元被提升到井平台上。 该平台还具有一个具有允许套管通过的开口的中心站。 该装置还包括至少一个提升装置，其提升井套管穿过中心站。 本发明将为石油和天然气井平台上通常使用的大型钻机或钻井平台的许多目的提供服务。 本发明将更快速地运输，并且比挖掘机或钻机上的工作需要相当少的设置时间。

公开(公告)号：US5435213A

公开(公告)日：1995-07-25

申请号：US207487

申请日：1994-03-07

Applicant: David A. Buck

Inventor： David A. Buck

IPC: B25B13/44 ,  B25B13/50 ,  E21B19/16

CPC classification number: E21B19/164 ,  B25B13/44 ,  B25B13/5075

Abstract: A camming member for power tongs, comprising a ring-shaped body including a central opening formed therein, the body being .rotatable about a point within the central opening, the body further including a slot, the slot opening through the body and communicating with the central opening; a ring-shaped drive member including a central opening formed therein, the drive member being rotatable about the point, the drive member further including a slot, the slot opening through the drive member and communicating with the central opening of the drive member, the slot of the drive member being alignable with the slot of the body, the drive member being slidably mounted on the body such that the drive member may rotate independently of the body and such that the drive member is radially supported by the body; and a detent and stop mechanism, mounted on the camming member, for allowing the body and the drive member to partially rotate relative to one another to a desired engaged position and then to maintain the engaged position as the camming member rotates. Additionally, a the body of the camming member may also have a first cam surface facing the central opening and curving inward toward the point, and a second cam surface facing the central opening and curving inward toward the point, at least a portion of the second cam surface being axially aligned with and offset from the first cam surface.

Abstract translation: 一种用于动力钳的凸轮构件，包括环形主体，其包括形成在其中的中心开口，所述主体围绕所述中心开口内的点可旋转，所述主体还包括狭槽，所述狭槽开口穿过所述主体并与所述主体连通 中央开放 环形驱动构件，其包括形成在其中的中心开口，所述驱动构件可绕所述点旋转，所述驱动构件还包括槽，所述槽开口穿过所述驱动构件并与所述驱动构件的中心开口连通，所述槽 所述驱动构件可与所述主体的狭槽对准，所述驱动构件可滑动地安装在所述主体上，使得所述驱动构件可以独立于所述主体旋转并且使得所述驱动构件由所述主体径向支撑; 以及安装在凸轮构件上的止动和停止机构，用于允许主体和驱动构件相对于彼此部分地旋转到期望的接合位置，然后在凸轮构件旋转时保持接合位置。 此外，凸轮构件的主体还可以具有面向中心开口并朝向该点向内弯曲的第一凸轮表面，以及面向中心开口并朝向该点向内弯曲的第二凸轮表面，第二凸轮表面的至少一部分 凸轮表面与第一凸轮表面轴向对准并偏移。

公开(公告)号：US4688649A

公开(公告)日：1987-08-25

申请号：US797400

申请日：1985-11-12

Applicant: David A. Buck

Inventor： David A. Buck

IPC: E21B17/07 ,  E21B31/107 ,  E21B4/06 ,  E21B4/10

CPC classification number: E21B31/107 ,  E21B17/073

Abstract: A mechanical jar used primarily on drill strings, in earth boreholes, to aid in freeing drill strings stuck in a well bore. A telescoping drill string component is constrained in a selected telescoped condition by a biased lock until enough axial stress is applied to the telescoped jar to release the lock. Energy stored in the stressed length of drill string then moves rapidly to strike a solid limit to the telescoping travel. The inertia of the moving part of the drill string applies a shock to the stationary, downwardly continuing part of the drill string. The shock is to aid in releasing the stuck string situation. The tension required to release the lock is adjustable, as a design alternative, by applying torque to the drill string. The jar can, by design alternative, be used to strike in either or both axial directions.

Abstract translation: 主要用于钻柱的机械罐，在地球钻孔中，以帮助释放钻在井眼中的钻柱。 伸缩式钻柱组件通过偏压锁定在选定的伸缩状态中，直到足够的轴向应力施加到可伸缩的罐以释放锁定。 存储在应力长度的钻柱中的能量然后快速移动以对伸缩行程施加固定的限制。 钻柱的移动部分的惯性对钻柱的静止的，向下延续的部分施加冲击。 令人震惊的是帮助释放卡住的情况。 作为设计替代方案，通过向钻柱施加扭矩，释放锁定所需的张力是可调节的。 通过设计方案，罐子可以用于在两个或两个轴向方向上冲击。

公开(公告)号：US5819605A

公开(公告)日：1998-10-13

申请号：US862555

申请日：1997-05-23

Applicant: David A. Buck ,  Daniel S. Bangert

Inventor： David A. Buck ,  Daniel S. Bangert

IPC: E21B19/16 ,  B25B13/50

CPC classification number: E21B19/164

Abstract: The present invention provides an improved power tong jaw having a jaw body with a roller aperture formed therein. A jaw roller is positioned in said roller aperture by some type of retaining surface, such as a roller pin. Additionally, a friction reducing surface is formed between the jaw roller and the jaw pin. In one embodiment, this friction reducing surface comprises a plurality of needle bearings. In alternate embodiments, the friction reducing surface comprises ball bearings, journal bearings, or recirculating ball bearings.

Abstract translation: 本发明提供了一种改进的动力钳夹爪，其具有形成在其中的辊孔的钳口体。 颚辊通过某种类型的保持表面（例如辊销）定位在所述辊孔中。 此外，在颚辊和钳口销之间形成减摩表面。 在一个实施例中，该摩擦减小表面包括多个滚针轴承。 在替代实施例中，摩擦减小表面包括球轴承，轴颈轴承或循环球轴承。

公开(公告)号：US5819604A

公开(公告)日：1998-10-13

申请号：US728761

申请日：1996-10-11

Applicant: David A. Buck

Inventor： David A. Buck

IPC: E21B19/16 ,  B25B13/50

CPC classification number: E21B19/164

Abstract: The present invention provides an improved power tong with a body having a rotating assembly. The power tong further has a plurality of jaw members positioned within the rotating assembly with two of the jaw members being pivoting jaws adapted to interlock when in a closed position. In an alternate embodiment, the improved power tong will have a compensating jaw assemble to limit the axial load placed on the tubular member being gripped.

Abstract translation: 本发明提供一种具有旋转组件的本体的改进的动力钳。 动力钳还具有定位在旋转组件内的多个钳口构件，其中两个钳口构件是适于在处于关闭位置时互锁的枢转钳口。 在替代实施例中，改进的动力钳将具有补偿夹爪组合以限制放置在被夹紧​​的管状构件上的轴向载荷。