Class 73/862.25 - Power tongs

Subclass of Class 73 - Measuring and testing
Definition: Subject matter wherein the tool comprises power means for
No. of patents: 34
Last issue date: 12/15/2009

Number	Title	Issue Date
7631563	Method and system for evaluating rod breakout based on tong pressure data A method for evaluating rod quality and wellbore dynamics includes receiving information about the rod size and tong type for a rod pulling operation. Expected breakout pressures can be determined based on the rod size and/or tong type and can be input into an evalu...	12/15/2009
7464612	Impulse energy tubing and casing make-up method and apparatus A make-up assembly and process provides a true power-tight connection between a first and second tubular segment. Each of the segments has an externally threaded male member at one end and an internally threaded female member at the other end. The male member of the...	12/16/2008
7392711	Insertable strain gauge spanner An insertable strain gauge spanner which comprises a spanner body having a rod body and a driving head insertable into the rod body; the rod body having a handle and an inserting opening at one end thereof; the inserting opening can be received the driving head; the...	07/01/2008
7174794	Rotation sensor and coupling for rotation sensor A coupling includes a first coupling member, a second coupling member, and a third coupling member being located in between the first coupling member and the second coupling member. The third coupling member has formed thereon a first pair of connecting elements dia...	02/13/2007
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
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
6945144	Torque wrench with finite plurality of selectable torque values A manually operated torque wrench is capable of providing a finite plurality of selectable torque values. The torque wrench has a wrench head, a handle, and a torque-responsive mechanism for producing an indication when a torque value has been applied by the torque ...	09/20/2005
6532648	Apparatus for fixedly connecting threaded tubes, and recording medium storing control program Method of fixedly connecting together externally and internally threaded tubes by tight engagement of externally and internally threaded portions of the tubes, wherein a wrenching operation is performed to rotate the externally and internally threaded tub...	03/18/2003
6439064	Hand tong having tactile torque indication A tong wrench having gripping jaws for gripping tubular members and a handle adapted thereto for applying an actuating force in a manner so as to effect pivotal movement of the handle and create a tactile and audible indication to an operator when a prede...	08/27/2002
6212763	Torque-turn system for a three-element sucker rod joint A sucker rod tool system for oil wells monitors both torque and angular displacement of a three-element sucker rod connection. The tool system engages two sucker rods that are at least partially screwed into opposite ends of a sucker rod coupling. The sys...	04/10/2001
5509316	System for measuring the torque applied to a threaded connection between sections of oilfield pipe A system for accurately determining the torque applied to threadable pipe members, such as casing, to be threaded together, comprising a torque wrench having a first end secured to one of the pipe members, and a second end forming an extendable handle por...	04/23/1996
5245877	Tong load cell assembly An apparatus and method including a load cell mounting apparatus movably mounted on a load cell which applies either of two types of loads to the load cell as one type of load. The apparatus and method for applying either a tensile load or a compressive l...	09/21/1993
5007153	Method for tightening threaded connectors During tightening a threaded connector including for example a bolt and a nut a moment is first determined when a bolt starts to elongate, and thereafter the nut is turned only over such an angular distance with which a desired elongation of the bolt belo...	04/16/1991
4823616	Torque and angular displacement sensing in yield threshold controlled wrenches The torque and angular displacement transducers in a yield threshold controlled wrench apparatus are relocated to reduce the problems encountered therewith from the harsh physical environment experienced by such transducers in conventional designs. In one...	04/25/1989
4791839	Apparatus and method for determining torque and presenting digital torque readout in a torque wrench system Apparatus and a method are presented for determining the torque load applied to a fastening element by a fluid powered wrench, and displaying a digital readout of the torque. The operating pressure of the wrench, after compensation for the temperature of ...	12/20/1988
4730254	Drill string make-up and breakout torque control system and apparatus A system and apparatus for the monitoring and control of torque applied during make-up and breakout of drill string components. The force applied by the cat head to the tong is measured by a hydraulic load cell and the horizontal and vertical angles betwe...	03/08/1988
4567779	Method and apparatus for torque monitoring A torque monitoring apparatus includes a Make-Up Tong (10) and a Break-Out Tong (12). The Make-Up Tong (10) is connected to one side of a threaded connection and the Break-Out Tong (12) is connected to the other side of the connection. A chain (22) attach...	02/04/1986
4501335	Method and apparatus for use in drill string make up A method and device for use in regulating torque application to a drill string when joining drill string segments using a tong and winch combination. A tension gauge and an angle measuring gauge continuously read tension on the winch line and the angle be...	02/26/1985
4446745	Apparatus for counting turns when making threaded joints including an increased resolution turns counter An apparatus for controlling the number of turns made and the torque applied during the operation of making a threaded joint includes a high resolution turns counter. The turns counter senses the rotation of a member of the joint and generates a pulsed si...	05/08/1984
4444273	Torque control system for catheads A novel system controls accurately the torque applied to threaded connections by a cathead operating on a tong arm, usually a manual tong. A strain gage/transducer in the catline measures the pull on the tong arm and applies a signal to an electric meter ...	04/24/1984
4402052	Apparatus for making threaded joints incorporating a make-up speed controller An apparatus is provided for controlling the speed of rotation of a joint member during the operation of making a threaded joint. At lower speeds of rotation, a counter means receives clock pulses generated at a predetermined frequency and counts down fro...	08/30/1983
4290304	Back-up power tongs and method A back-up tong for use with a power tong holds the lower pipe in a pipe joint from being rotated, so as to effect makeup or breakout of the pipe joint. The back-up tong employs sliding heads which are driven by camming surfaces on a ring-like member fixed...	09/22/1981
4289021	Tongs having torque indicator thereon A tongs having gripping jaws and a handle for applying an actuating force thereto is characterized by a sensing unit mounted in a force-receiving relationship with the handle. The sensing unit is responsive to a compression or tension force imposed thereo...	09/15/1981
4210017	Method and apparatus for generating an actual torque signal during the make-up of threaded joints A pipe or a pipe and a coupling are threaded onto the end of a pipe string. The applied torque is monitored and, when a reference torque value is exceeded, the number of turns are counted. When either the actual torque or the actual turns exceeds a predet...	07/01/1980
4208775	Method and apparatus for making threaded joints A method and apparatus are provided for making threaded joints, such as pipe joints, within a range of predetermined applied torque and turns values. A pipe or a pipe and a coupling are threaded onto the end of a pipe string. The applied torque is monitor...	06/24/1980
4208919	Threaded joint making apparatus having a d.c. power supply An apparatus is provided for making threaded joints, such as pipe joints, including means for storing and indicating values of the actual torque applied to one of the members being rotated with respect to the other member and values of actual turns made b...	06/24/1980
4202208	Hydraulic torque indicator A hydraulic torque indicator incorporating a gage readable in foot-pounds, which is adjustable for any length torque arm by the use of a link arm and an adjustable hydraulic cylinder connected in a trigonometric configuration which increases the pressure ...	05/13/1980
4176436	Method and apparatus for counting turns when making threaded joints A method and apparatus are disclosed for making threaded joints, such as pipe joints, within a range of predetermined applied torque and turns values. A pipe or a pipe and a coupling are threaded onto the end of a pipe string. The applied torque is monito...	12/04/1979
4137758	Torque indicator apparatus A torque indicating attachment for a pipe tong arm is disclosed. The attachment comprises support means releasably connected to the arm and a toggle pivotally connected to the support means. The toggle includes a second toggle link oriented radial to the ...	02/06/1979
4125040	Power tong apparatus Apparatus for control of a power tong for imparting torque to a tubular member to make a threaded connection with another member, torque being sensed by means such as a strain gauge and torque transducer. Cams are provided to coact with the throttle or mo...	11/14/1978
4091451	Method of and apparatus for making up a threaded connection A method of and apparatus for making up two members having mating threaded connections, such as pipe joints or bolts, for insuring that a specified number of threads have been engaged and a specific torque has been applied. The mating threaded connections...	05/23/1978
4084429	Power tong apparatus An improved power tong apparatus having power means for supplying rotative forces to a first tubular member in order to make or break a connection between such tubular member and a second tubular member and for measuring and displaying the torque supplied...	04/18/1978
4050300	Torque indicating assembly A torque indicator assembly and more particularly an improved torque indicator assembly offering multiple use applications and improved long range consistency and operational characteristics....	09/27/1977

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Class 73/862.25 - Power tongs