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| Number | Title | Issue Date |
| 8074537 | Oilfield tubular spin-in and spin-out detection for making-up and breaking-out tubular strings Spin-in and spin-out apparatus and methods are presented wherein an oilfield tubular spinner used in combination with a wrench detects the shouldering-up of tubulars during make-up and tubular thread disengagement during break-out. Sensors are employed to quantify m... | 12/13/2011 |
| 7313986 | Tubular-drill bit connect/disconnect apparatus An apparatus for rotating a tubular with respect to a drill bit, e.g., for making or breaking a connection between a tubular and a drill bit, the apparatus, in at least certain aspects including a frame, gripper apparatus connected to the frame for gripping and rota... | 01/01/2008 |
| 7275463 | Tong with a continuous composite belt and methods for making and using same A manual tong is disclosed which includes a continuous composite continuous belt, a handle assembly, and a jaw assembly, where the continuous composite continuous belt is designed to take the place of the convention linked chains used currently in manual tongs. The ... | 10/02/2007 |
| 7255025 | Power tong with sliding jaw A power tong (1) or back-up tong has a sliding jaw assembly (6) that may be advanced into the throat (4) of the tong for engagement with a pipe. A camming surface (11) on the inside circumference of the ring gear (10) advances the ... | 08/14/2007 |
| 7246541 | Pipefitting engaging tool assembly A pipefitting engaging tool assembly includes a housing that has a bottom wall and a peripheral wall. A head is attached to the housing and has a circular opening extending therethrough. The opening is defined by an outer edge that has a slot therein continually ext... | 07/24/2007 |
| 7204173 | Rotatable die tong jaw Power tong jaws comprising one or more dies which are rotatable. ... | 04/17/2007 |
| 7188547 | Tubular connect/disconnect apparatus An apparatus for rotating a tubular, the apparatus, in at least certain aspects including a frame, a rocker assembly connected to the frame, the rocker assembly including a top rocker arm pivotably mounted to the frame, and a bottom rocker arm pivotably mounted to t... | 03/13/2007 |
| 7117938 | Drill pipe connecting and disconnecting apparatus Drilling rig apparatus for connecting and disconnecting well pipe at a drilling rig. A remotely controlled power wrench assembly is mounted on a remotely controlled lifting mechanism attached to a base spaced about the well axis on the rig floor. The wrench assembly... | 10/10/2006 |
| 7114235 | Automated pipe joining system and method A method and apparatus for making and breaking tubular connections at the surface of a well by utilizing a pipe joining system. The pipe joining system includes a movable support frame for supporting and integrating on a rig floor the tools associated with making an... | 10/03/2006 |
| 7100697 | Method and apparatus for reforming tubular connections The present invention generally relates to methods and apparatus for connecting tubulars and reforming the connection between the tubulars. In one aspect of the invention, the tubulars are aligned, connected, and then reformed at the connection. In one embodiment, t... | 09/05/2006 |
| 7090254 | Apparatus and method aligning tubulars In one aspect, an apparatus for aligning tubulars is provided, comprising at least one guide, a tong, and a backup unit, wherein the guide is arranged on or between the tong and the backup unit, and wherein the guide is, in use, movable towards and away from the tub... | 08/15/2006 |
| 7069817 | Power tongs Damage to pipe resulting from non-uniform application of gripping forces is minimized by modified power tongs employing pivoting jaws which automatically adjust to the circumference of the pipe. The pivoting jaws pivot about mounting pins which pass through an elong... | 07/04/2006 |
| 7036396 | Drill pipe spinner device In spinner tongs, a so-called spinner (30), incorporated in an iron roughneck and thus serving to rotate a drill pipe during connection thereof to a drill string or during division of the drill string into individual pipes, the aim has been to reduce damage o... | 05/02/2006 |
| 7028585 | Wrenching tong Apparatus for applying torque to a first tubular relative to a second tubular, the apparatus comprising a first tong for gripping the first tubular and a second tong for gripping the second tubular, wherein the first tong is provided with teeth around a peripheral s... | 04/18/2006 |
| 7028586 | Apparatus and method relating to tongs, continous circulation and to safety slips A tong system includes an upper tong having grips for gripping a tubular and a rotation mechanism to rotate the grips and the tubular. A lower tong also has grips and a rotation mechanism to rotate the grips to provide rotation to a lower tubular, such that the uppe... | 04/18/2006 |
| 7017450 | Tong jaw and a method for constructing the tong jaw A method for constructing a power tong jaw, including the steps of: (1) providing a substantially flat upper plate and a substantially flat lower plate; (2) providing at least two separately formed substantially elongated column members, at least one of the column m... | 03/28/2006 |
| 7013759 | Apparatus for handling tubulars and method A device for torquing a tubular connection. The device comprises an upper assembly having an upper jaw member, a lower assembly having a lower jaw member, an upper gear for advancing the upper jaw member, and a lower gear for advancing the lower jaw member. The uppe... | 03/21/2006 |
| 7000502 | Drillpipe spinner The invention relates to an improved drill pipe spinner. The improved spinner may be used as a stand-alone piece of pipe handling equipment or may be used in an Iron Roughneck. The spinner comprises a pair of clamping arms that are movable between an open position a... | 02/21/2006 |
| 6990876 | Power tongs A power tong apparatus for rotating a pipe comprises a tong housing and a ring gear, rotatably mounted in the tong housing. A top cage plate is positioned above an inner portion of the ring gear and a corresponding bottom cage plate is positioned below the inner por... | 01/31/2006 |
| 6988428 | Power tong with linear camming surfaces In a pivoting-jaw power tong, each primary camming surface of the rotary gear has a substantially linear rather than curved configuration. Each primary camming surface forms an acute angle with a radial line extending from the rotary gear centerline to the point whe... | 01/24/2006 |
| 6966385 | Tong positioning system and method A tong positioning system positions a power tong about an oilfield tubular connection to make up or break out a threaded connection. An extendable arm and a retainer device on the extendable arm. In a preferred embodiment, the retainer device comprises opposing late... | 11/22/2005 |
| 6920808 | Double-action power pipe wrench An adjustable power wrench is provided for spinning together, and apart, sections of pipe used in long drill strings such as are typically seen in water well and oil drilling. The wrench is preferably designed for use with large diameter drill pipes or rods, includi... | 07/26/2005 |
| 6910402 | Pipe spinner Methods and apparatus for spinning a pipe using a flexible belt. The spinner utilizes a single actuation mechanism contained within a rigid body to engage the pipe and tension the belt. The pipe is engaged by one or more pivoting arms that are locked into place by p... | 06/28/2005 |
| 6880430 | Vise apparatus A vise apparatus for use on a drilling machine to thread together pipe to form a drill string. The vise apparatus also for use on a drilling machine to break pipe threaded together in a drill string. The vise apparatus having scissor members that open to receive var... | 04/19/2005 |
| 6851335 | Tong with composite belt and methods for making and using same A manual tong is disclosed which includes a composite belt, a handle assembly, and a jaw assembly, where the composite belt is designed to take the place of the conventional linked chains used currently in manual tongs. The composite belt is held in place by a set o... | 02/08/2005 |
| 6829967 | Power tong tool A power tong for coupling and uncoupling tubular members including relatively large diameter members and relatively small diameter members whether in a concentric or not configuration, wherein a housing mounts a rotary framework having a U-shaped cavity adapted to r... | 12/14/2004 |
| 6814149 | Apparatus and method for positioning a tubular relative to a tong An apparatus and a method for positioning a tubular relative to a tong is provided. In one aspect, a positioning tool may be mounted on a lower portion of the tong. The positioning tool includes a positioning member for determining a position of the tubular and a ce... | 11/09/2004 |
| 6752043 | Vise apparatus A vise apparatus for use on a drilling machine to thread together pipe to form a drill string. The vise apparatus also for use on a drilling machine to break pipe threaded together in a drill string. The vise apparatus having scissor members that open to receive var... | 06/22/2004 |
| 6619160 | Sliding jaw adaptor for pivoting jaw power tong A jaw adapter for use in a pivoting jaw power tong having a cage plate designed to house a pivoting jaw member. The jaw adapter includes an adapter body shaped to fit between the cages plates of a pivoting jaw power tong. The adapter body further includes... | 09/16/2003 |
| 6378399 | Granular particle gripping surface An improved die insert for gripping oil field tubular members in tubular handling systems such as power tongs, slips, safety clamps and the like. The die insert has a gripping surface which comprises a backing surface adapted to contact the tubular member... | 04/30/2002 |
| 6327938 | Jaw unit for use in a power tong A jaw unit (102) for use in a tong which comprises a jaw holder (105) and a jaw (106) movable with respect to said jaw holder (105), characterised in that said jaw (106) is slidably mounted on said jaw holder (105).... | 12/11/2001 |
| 6311789 | Bit breakers, bits, systems, and methods with improved makeup/breakout engagement A bit breaker is formed of a U-shaped base and latchable gate which closes the U. When the gate is in a closed position, evenly spaced chocks on both the base and gate protrude into the central cavity of the bit breaker to engage slots formed in the bit. ... | 11/06/2001 |
| 6082224 | Power tong A new power tong for rotating tubular members for make-up (connection) and break-out (disconnection) operations. In one aspect such a tong has at least one movable jaw with a smooth surface gripping element thereon and pre-load apparatus for applying a pr... | 07/04/2000 |
| 6065372 | Power wrench for drill pipe A motorized wrench for spinning together (or apart) lengths of drill pipe as typically used in water well drilling. A single motor is connected by a pair of drive chains to two toothed drive rollers to spin the rollers and, thus, spin drill pipe engaged a... | 05/23/2000 |
| 5996444 | Apparatus for unscrewing drill pipe sections Pipe sections of a drill string are unscrewed by holding one pipe section stationary in a clamping arm, and rotating another pipe section by a turning wrench. The clamping arm includes an adapter that can be replaced by similar adapters sized for differen... | 12/07/1999 |
| 5911796 | Jaw assembly 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... | 06/15/1999 |
| 5904075 | Interlocking jaw power tongs 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 interloc... | 05/18/1999 |
| 5823074 | Open head foster-style back-up tong An open-head Foster style backup tong has a number of pivoting jaws in mesh with a ring gear. A gap in the ring gear admits tubing into the center of the ring gear, where the tubing is gripped by the jaws when the ring gear is turned. The tong housing is ... | 10/20/1998 |
| 5819604 | Interlocking jaw power tongs 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 interloc... | 10/13/1998 |
| 5791206 | Drill pipe handling mechanism A breakout wrench for making and breaking joints between successive drill pipe in a drill string on a drilling rig includes a swing arm pivotable between a storage and a pipe gripping position. The swing arm carries a first and second pipe gripping jaw, t... | 08/11/1998 |
