| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 081570150 | Round work | 26 |
| 20080229886 | Drive extension wrench - An driver extension wrench having a pair of elongate housing members with openings at opposing ends of the housing members, with a plurality of interior posts at a predetermine spacing. The openings have sockets with exterior gear teeth. Gears are mounted on each of the posts and cooperate with each other and the sockets so that rotational force applied to the first opening is transmitted through the gears to the second opening to be applied to a fastener. | 09-25-2008 |
| 20080257116 | Power Tong Device - A power tong ( | 10-23-2008 |
| 20080282847 | Method and Device for Positioning a Power Tong at a Pipe Joint - A method and device for positioning a power tong ( | 11-20-2008 |
| 20090120244 | Wrench for Tightening Pipe Nuts - A wrench for tightening threaded male and female pipe nuts includes a wrench gear rotatable within a housing and having a nut slot so that the wrench gear can be engaged upon one of the nuts. A pair of pinion drive gears engage with gear teeth of the wrench gear at spaced apart locations on the periphery so that at least one of the pinion drive gears is engaged with the wrench gear at all times during rotation of the wrench gear to tighten the one nut. A nut holding plate has a nut slot and is mounted on the housing by a pin and slot arrangement so that the nut holding plate can shift to enable the nut holding plate to be engaged upon the other nut and hold the other nut stationary while the wrench gear is rotated to tighten the one nut. | 05-14-2009 |
| 20090272231 | Tong Unit With Cage Plate Having Removable Window Section - A tong unit having a ring gear, an upper cage plate, and a jaw assembly is disclosed. The cage plate has a removable window section, through which the jaw assembly may be inserted into and removed from the central opening in the ring gear. The jaw assembly may be attached to the removable window section, so that the window section and the jaw assembly can be lifted out and inserted together. | 11-05-2009 |
| 20100300251 | TONG ASSEMBLY - A tong assembly includes a case assembly having an enclosure defining an interior. A bearing assembly is disposed in the interior of the enclosure. The bearing assembly includes a first bearing member defining a first cavity and a second bearing member defining a first cavity. A tong head assembly is disposed in the interior of the enclosure of the case assembly. The tong head assembly includes a tong head engaged with an outer ring gear. The outer ring gear includes a first axial end portion, an oppositely disposed second axial end portion and a central portion. The first axial end portion is disposed in the first cavity of the first bearing member. The second axial end portion is disposed in the first cavity of the second bearing member. | 12-02-2010 |
| 20110041656 | REDUCED WEIGHT POWER TONG FOR TURNING PIPE - A power tong body having a central opening comprises upper and lower cover plates and a rotary gear contained there between. The tong incorporates the centering guide, e.g. rollers, that extend between the rotary gear and respective tong covers. Such centering guides through the central openings in the tong body covers and provide contact surfaces carried that permit differential rotation of the rotary gear with respect to such covers. The rollers may roll on circular races formed by the inside edge face surfaces of the tong covers bordering the central opening. The support rollers may also extend beyond the upper and lower cover plates and engage with a guide surface or race formed on the respective cage plates of the tong, centrally locating such cage plates with respect to the rotary gear while allowing differential rotation of the cage plates with respect to the rotary gear. | 02-24-2011 |
| 20110296957 | POWER TONG WITH DOOR JAMMER VALVE - A power tong with a cable operated door jammer valve for shutting off the hydraulic supply of a power tong when the door is opened. | 12-08-2011 |
| 20110296958 | COMPACT POWER TONG - A power tong for rotating a pipe, the power tong comprising: a frame having a pair of arcuate front portions defining a throat for receiving the pipe; a cage plate assembly mounted for rotation on the arcuate front portions about a center of rotation, the cage plate assembly having an opening that is alignable with the throat; a ring gear mounted for rotation within, and supported by, the cage plate assembly about the center of rotation, the ring gear having an opening that is alignable with the throat; the ring gear cooperating with jaws mounted on the cage plate assembly for gripping the pipe upon rotation of the ring gear. | 12-08-2011 |
| 20140245867 | SPINNER ASSEMBLY FOR OILFIELD TUBULAR CONNECTIONS - A spinner assembly for threading or unthreading tubular members above the floor of a well site has a spinner with an open throat, a plurality of rollers rotatable about a substantially vertical axis, a motor for driving the plurality of rollers, and a plurality of brackets supporting the plurality of rollers. The open throat is suitable for receiving one of the tubular members therein. The spinner housing has a common axis. The plurality of rollers are adapted to engage the tubular member received in the open throat. The brackets are disposed within the spinner housing on opposite sides of the open throat. The brackets are movable inwardly and outwardly of the spinner housing in opposite directions at a substantially straight line along the common axis. | 09-04-2014 |
| 081570160 | With additional work-engaging means | 14 |
| 20080202291 | Method and Apparatus for Forming Tubular Connections - The apparatus of the present invention is directed to a replacement cage assembly ( | 08-28-2008 |
| 20080250902 | Rotation unit for torque tong comprising a rotational part with teeth - A rotation unit for a torque tong for making and/or breaking threaded connections between pipes and/or spinning pipes during screwing and/or unscrewing of pipes, primarily pipes used in petroleum production. The unit includes a fixed part and a rotary part arranged to grip a pipe to be rotated. The rotary part includes at least one movable gripping jaw arranged to be moved into engagement with the pipe. The rotary part includes toothing arranged to engage at least one chain, which chain is operatively connected to an actuator in order to move the chain and so impart rotary movement to the rotary part. | 10-16-2008 |
| 20090211404 | Spinning wrench systems - An apparatus for rotating a tubular, the apparatus, in at least certain aspects including having a plurality of tubular-contacting rollers with one or more pairs of interlaced rollers. This Abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 C.F.R. 1.72(b). | 08-27-2009 |
| 20090211405 | OILFIELD TUBULAR TORQUE WRENCH - An oilfield tubular torque wrench and a tong therefore is described. In one aspect, a torque wrench is described including an upper tong including a recess for accepting an oilfield tubular positioned along an axis passing through the recess; a lower tong including a recess positioned below the recess of the upper tong so that the axis passes therethrough; pipe gripping dies in the recesses of the upper tong and the lower tong drivable toward and away from the axis; a swivel bearing between the upper tong and the lower tong permitting the upper tong and the lower tong to swivel relative thereto while the recesses remain positioned with the axis passing therethrough, the swivel bearing including a first partial ring mounted to one of the upper tong and the lower tong and a second partial ring mounted on the other of the upper tong and lower tong, the second partial ring being interengaged at a bearing surface to ride along a length of a bearing surface of the first partial ring; and a retainer ring positioned adjacent one of the first partial ring and the second partial ring to act against lateral disengagement of the second partial ring from the first partial ring. In another aspect, dissimilar materials are selected for the first ring and the second ring to avoid galling. In another aspect a tong with adjustable dies is described. | 08-27-2009 |
| 20090272232 | Dumbell Roller Assembly for Tong Unit - A power tong having a ring gear and dumbell rollers, with mating load surfaces on the ring gear and dumbell rollers which transfer horizontal and vertical loads from the ring gear to the dumbell rollers, without contact between the ring gear teeth and the dumbell rollers. The power tong further has a dumbell roller shaft configuration which permits vertical and rotational locking of the shaft, while permitting easy replacement and without binding of the rotation of the top and bottom plates on the dumbell rollers. | 11-05-2009 |
| 20090272233 | Tong Unit Having Multi-Jaw Assembly Gripping System - A jaw assembly, namely a multi-jaw assembly (preferably three-jaw) for a tong unit. The jaw assembly has a rear jaw connected to two side jaws, by pivot pins, to form a multi-jaw jaw assembly. The pivot pins pass through the upper and lower cage plates on the tong unit; as such, the jaw assembly must move along with the cage plates. The rear jaw, with respect to the cage plates, is stationary. The side plates, by virtue of the pivot pins, are rotatably attached with respect to the cage plates. The rear jaw and side jaws carry dies, typically two dies on the rear jaw and one die on each of the side jaws, for gripping a tubular. The multi-jaw assembly permits efficient gripping of undersize and/or out-of-round tubulars, and application of torque thereto, without damage to the tubular. | 11-05-2009 |
| 20090277308 | OPEN-FACED ROD SPINNER - An open-faced rod-spinning device configured for making and/or breaking joints between threaded drill rods. The rod-spinning device may include a drive gear with an open face. The drive gear may also be coupled to a plurality of drive pins. The rod-spinning device may include a carriage assembly including an open face for receiving and rotating about a drill rod. The carriage assembly may include a plurality of gripping lobes configured to be engaged and rotated by the drive pins about pivot pins. The drive gear may be configured to rotate relative to the carriage assembly to cause the drive pins to engage and rotate the gripping lobes. | 11-12-2009 |
| 20090314137 | SELF-ADJUSTING PIPE SPINNER - A self-adjusting spinner is provided that is capable of accommodating various pipe sizes without requiring the need for an operator to climb up the support mechanism and manually change the position of the drive assembly. The self-adjusting spinner includes a case having two pivotally connected members: a stationary case member and a moving case member. Upper and lower plates having gear racks are mounted on the stationary case member for moving a drive assembly horizontally across the case. The drive assembly includes a motor that drives gear sprocket through a drive shaft. The drive sprocket then drives a chain that rotates a drill pipe in an operative position relative to the case. The spinner also includes an adjusting assembly mounted on the case that moves the drive assembly along the gear rack upon the actuation of an adjustment sequence. When the adjustment sequence is initiated, the effective length of the chain is adjusted to accommodate drill pipes of varying diameters. | 12-24-2009 |
| 20110067529 | WRENCHING TONG - A torque measuring flange is provided for use with a tong arrangement. The torque measuring flange includes a top plate and a bottom plate and one or more cylinders disposed between one or more wedges, whereby rotating the top plate causes the wedges to compress a piston in the cylinder. | 03-24-2011 |
| 20110219916 | Power Tong Device - A power tong device ( | 09-15-2011 |
| 20110271797 | OPEN-FACED ROD SPINNING DEVICE - An open-faced rod-spinning device configured for making and/or breaking joints between threaded drill rods. The rod-spinning device may include a drive gear with an open face. The drive gear may also be coupled to a plurality of drive pins. The rod-spinning device may include a carriage assembly including an open face for receiving and rotating about a drill rod. The carriage assembly may include a plurality of gripping lobes configured to be engaged and rotated by the drive pins about pivot pins. The drive gear may be configured to rotate relative to the carriage assembly to cause the drive pins to engage and rotate the gripping lobes. | 11-10-2011 |
| 20120111154 | CENTRING MEANS IN A ROTARY TONG - The invention relates to a pipe clamping device comprising a housing which has a tubular centre in which a pipe is to be positioned. The pipe clamping device comprises at least three gripping devices for synchronous movement in towards the pipe. Each gripping device is disposed with a direction of movement in towards the tubular centre, where each gripping device is arranged in order, in contact with the pipe, to provide a holding force. The pipe clamping device is provided with elongate flexible transmission elements, each of the elongate flexible transmission elements being attached to one of the gripping devices and running in contact with at least one support means to attachment to each of the other gripping devices. Upon movement of at least one of the gripping device, this movement is transmitted to at least one of the other gripping device by the associated elongate transmission element. The invention also comprises a pipe clamping device in which there is used at least two gripping devices and a torque tong, of which the pipe clamping device is a part. | 05-10-2012 |
| 20130118315 | Drill Pipe Breakout Machine - An apparatus includes: a first clamping mechanism having a first hollow portion that includes a first gripping die portion disposed therein and a second hollow portion that includes a second gripping die portion disposed therein such that a first well drilling component is positioned therebetween; a wedge-shaped plate positioned above the first clamping mechanism and including a first end having a notch formed therein and a second arcuate end having gear teeth formed therein; a second clamping mechanism supported by the wedge-shaped plate and including a first hollow portion having a first gripping die portion disposed therein and a second hollow portion having a second gripping die portion disposed therein such that a second well drilling component is positioned therebetween; and a drive mechanism. Operation of the drive mechanism rotates the wedge-shaped plate and the second clamping mechanism through about a 90° range of motion. | 05-16-2013 |
| 20140174261 | POWER TONG AND BACKUP TONG APPARATUS - A power tong assembly and backup tong assembly are disclosed. The power tong assembly includes a drive motor driving a drive gear engaged with a rotatable portion of a bearing assembly. The rotatable portion of the bearing assembly is connected to a cylindrical rotor positioned concentrically about jaws that grippingly engage and rotate a first tubular member when the portion of the bearing assembly rotates. The backup tong assembly comprises a pair of diametrically opposed gripper assemblies each having a cylinder with a cylinder rod, connected to a head member, connected to a pair of gripper members with gripping surfaces, so that extension of the cylinder rods causes the gripper members to grippingly engage a second tubular member. The power tong assembly and the backup tong assembly may be concentrically aligned to connect and disconnect the first and second tubular members. | 06-26-2014 |
| 081570180 | Cam-operated jaw | 2 |
| 20100083796 | METHODS AND APPARATUS FOR MAKE UP AND BREAK OUT OF TUBULAR CONNECTIONS - A gripping apparatus and a method apparatus for making up and breaking out tubular connections. In one embodiment, the gripping apparatus comprises an outer gear, a plurality of rollers coupled to the outer gear, an inner ring, a passive jaw, and a pair of active jaws pivotably coupled to the inner ring. The active jaws include camming surfaces for positioning, securing, actuating, and retracting the active jaws upon rotation of the outer gear. The gripping apparatus may further include a control switch operable to maintain the gripping apparatus in a make up mode or a break out mode regardless of rotation of the outer gear. | 04-08-2010 |
| 20140345426 | Simultaneous Clamp and Torque Drive - A clamping system for making and breaking threaded connections between a first tubular and a second tubular comprises a clamp assembly. The clamp assembly includes a first cam gear, a first plurality of clamp members disposed within the first cam gear, and a torque gear. Each clamp member is pivotally coupled to the torque gear. Each clamp member is configured to pivot between a withdraw position radially spaced apart from the first tubular and a gripping position engaging the first tubular. In addition, the clamping system comprises a clamp actuator. The clamp actuator includes a mounting shaft, a first clamp drive gear rotatably coupled to the mounting shaft, and a torque drive gear rotatably coupled to the mounting shaft. The first clamp drive gear is configured to rotate the first cam gear and the torque drive gear is configured to rotate the torque gear. | 11-27-2014 |
