Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 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 |
| 7219580 | Cam follower for power tongs and other uses A power tong or back-up tong has a jaw assembly that is advanced into engagement with a pipe through a cam follower that contacts the camming surface on the inside circumference of a ring gear, the cam follower being in the form of a series of roller elements arrang... | 05/22/2007 |
| 7204173 | Rotatable die tong jaw Power tong jaws comprising one or more dies which are rotatable. ... | 04/17/2007 |
| 7197963 | Apparatus for clamping a drilling tubular against rotation An apparatus that can be used during drilling operations for the purposes of clamping and holding drilling tubulars is disclosed. The embodiments relate to machinery that clamp and hold drilling tubulars to allow assembly to a specified torque or disassembly of the ... | 04/03/2007 |
| 7021687 | Clamp assembly An actuated workpiece clamp is provided. The clamp of this disclosure illustratively has an actuator, a linkage, a cam member, a cam pin, and at least one jaw member. ... | 04/04/2006 |
| 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 |
| 6761090 | Camming system for power tong jaws A power tong or back-up tong has a jaw assembly that is advanced into engagement with a pipe through a cam follower that contacts the camming surface on the inside circumference of a ring gear, the cam follower being in the form of a series of roller elements arrang... | 07/13/2004 |
| 6745646 | Apparatus and method for facilitating the connection of pipes An apparatus for facilitating the connection of pipes comprises a rotary (4) and a stator (5), the rotary comprising at least one hydraulically actuated jaw (24,25,26), and a pump (58) arranged on the rotary (4) for pumping hydraul... | 06/08/2004 |
| 6668684 | Tong for wellbore operations A tong as may be used for a continuous circulation system in a wellbore. The tong has a housing with a hollow interior. A plurality of spaced apart jaw assemblies reside within the housing's hollow interior for engaging a portion of a tubular to be grippe... | 12/30/2003 |
| 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 |
| 6598501 | Apparatus and a method for facilitating the connection of pipes An apparatus for facilitating the connection of pipes which apparatus comprises a rotary (1) and jaws (20, 21, 22), characterised in that all of said jaws (20, 21, 22) are active and are actuable by pressurised fluid.... | 07/29/2003 |
| 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 |
| 5868045 | Apparatus for making and breaking joints in drill pipe strings Apparatus for making and breaking joints in drill pipe strings has three jaws each of which is adjustable to an infinite number of settings. The jaw-adjustment means are symmetrical about a central plane, and incorporate a spherical section. Different por... | 02/09/1999 |
| 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 |
| 5207128 | Tong with floating jaws A tong, preferably a power tong, with one or more floating jaws which are releasably retained on and selectively movable with a rotary device; in one aspect the jaws having a compound jaw camming surface with a primary cam action surface, a rest surface, ... | 05/04/1993 |
| 5184530 | Offset geared nutrunner attachment A powered wrenching tool adaptable to be powered by any reversible drive mechanism is formed with a support for drive wheels and idler wheels with the idler wheels being movable with respect to the drive wheels, to adjust the tool for differing diameters ... | 02/09/1993 |
| 5060542 | Apparatus and method for making and breaking joints in drill pipe strings A power apparatus and method for making and breaking joints in drill pipe strings in oil wells, in which a single torquing cylinder, that always moves in a single direction while torquing, both makes and breaks the joints. Three levels of jaw elements are... | 10/29/1991 |
| 5044232 | Active jaw for a power tong An active jaw for a power tong is provided with an upper cam and a lower cam which are shaped so that rotation of the rotary relative to the active jaw in either sense from a first position results in the active jaw being applied to a pipe via a roller. T... | 09/03/1991 |
| 4986146 | Camming member for power tongs 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... | 01/22/1991 |
| 4979356 | Torque wrench A torque wrench comprises a split casing which can be divided to receive and grip pipes, each casing half comprising jaws which are synchronously movable to center and frictionally engage the pipe joints. The wrench has a split inner annulus which is moun... | 12/25/1990 |
| 4729269 | Powered pipe wrench A pipe wrenching tool adapted to be powered by a hand held power drive mechanism is formed with a support for a drive wheel and an idler wheel with the idler wheel being movable with respect to the drive wheel to adjust the tool for differing sizes of pip... | 03/08/1988 |
| 4709599 | Compensating jaw assembly for power tongs A pipe die linkage for power tongs has a preloaded spring between a force producing cam follower and pipe die of such strength and preload that the die serrations will be forced to adequately bite into the pipe. Bias resisted overtravel will prevent pipe ... | 12/01/1987 |
| 4649777 | Back-up power tongs Back-up power tongs are provided, for holding a tubular member, such as a drill pipe, against rotation of a connected tubular member, the back-up tongs comprising a body, having a center opening of sufficient size for the tubular member to pass therethrou... | 03/17/1987 |
| 4631987 | Power tongs 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... | 12/30/1986 |
| 4590823 | Dual-string tubing tong and method An improved power tong is provided of the type having a open throat portion for laterally moving the tong on and off a string of tubing. A ring member is rotatably guided by upper, lower, and intermediate bearings, and a cage plate assembly is partially d... | 05/27/1986 |
| 4570706 | Device for handling rods for oil-well drilling A device for handling rods for oil-well drilling, said device having a motor (21) associated with a reduction gear (22), the motor being suspended from a hook (8) and rotating a hollow vertical shaft (20) about its axis, said shaft being connected to a dr... | 02/18/1986 |
| 4545269 | Machine to apply a screwing or unscrewing torque A machine to apply screwing and unscrewing torque to successive drilling shafts employs upper and lower claws, one of which is fixed and the other of which rotates through a limited angular range. Each claw comprises a pair of right-angle branches extendi... | 10/08/1985 |
| 4495840 | Bit breaker A bit breaker adapted to be fitted in the Kelly drive of a drill rig for detachably securing a rotary drill bit to the Kelly drive to enable the latter to rotate the bit relative to a drill string having an internally threaded lower end portion in one dir... | 01/29/1985 |
| 4494424 | Chain-powered pipe tong device A chain-powered pipe tong device for spinning up and torquing drill pipe and casing when making up or disconnecting a string of tubular elements in the drilling and casing of oil wells, the tong device including a chain sprocket drivingly connected throug... | 01/22/1985 |
| 4487095 | Squeeze torque wrench A gearless squeeze torque wrench for use with a power means is provided comprising a wrench case, a fixed gripping jaw rigidly attached to said wrench case, a floating gripping jaw freely movable inside of said wrench case and a power transfer means conne... | 12/11/1984 |
| 4474088 | Reverse pin for sucker rod tongs Tongs are provided for screwing together or unscrewing sucker rods for deep oil wells. A slotted ring gear is placed into a slotted annular housing plate and driven by conventional means. Heads on cage plates are moved by cam on the internal surface of th... | 10/02/1984 |
| 4445403 | Power tongs A power tong which includes a frame and a pipe-gripping mechanism associated with a throat at one end of the frame. Power is transmitted to the pipe-gripping mechanism from a power unit through a drive train. The pipe-gripping mechanism cooperates with th... | 05/01/1984 |
| 4437363 | Dual camming action jaw assembly and power tong A rotary tong for use in well drilling operations to make up and break out drill strings or similar axially elongated objects which has a secondary camming action provided by the jaw assembly. By use of the inventive jaw assembly a secondary camming actio... | 03/20/1984 |
| 4404876 | Power tongs A power tong includes a frame and a pipe-gripping mechanism associated with a throat at one end of the frame. Power is transmitted to the pipe-gripping mechanism from a power unit through a drive train. The pipe-gripping mechanism cooperates with the thro... | 09/20/1983 |
| 4402239 | Back-up power tongs and method Improved back-up tongs are provided for use with powered rotary tongs for making and breaking sections of drill pipe in a drill string. The tongs include a pair of jaw members which are slidably and radially driven into engagement with the drill pipe by l... | 09/06/1983 |
| 4334444 | Power tongs A power tong system for engaging or disengaging threaded pipe sections has an annular rotary member that is supported against lateral thrust and include a hinged portion that is pivotable to permit side access to a pipe. The rotary member is rotated about... | 06/15/1982 |
| 4250773 | Rotary tong incorporating interchangeable jaws for drill pipe and casing A rotary tong used in well-drilling operations to make-up and break-out drill strings which incorporates readily-interchangeable sets of jaws, one of which may be used for drill pipe and the other of which can be used for relatively thin-walled well casin... | 02/17/1981 |
| 4215602 | Power tongs A power tong system for engaging or disengaging threaded pipe sections has an annular rotary member that is supported against lateral thrust and include a hinged portion that is pivotable to permit side access to a pipe. The rotary member is rotated about... | 08/05/1980 |
| 4089240 | Power tongs A power tong includes a frame and a pipe-gripping mechanism associated with a throat at one end of the frame. Power is transmitted to the pipe-gripping mechanism from a power unit through a drive train. The pipe-gripping mechanism cooperates with the thro... | 05/16/1978 |
| 4057887 | Pipe disconnecting apparatus Apparatus for disconnecting the lower threaded end of an upper section from the upper threaded end of a lower section of pipe string extending through the bore of an underwater wellhead.... | 11/15/1977 |
