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Class 81/57.17 - Flexible jaw


Subclass of Class 81 - Tools
Definition: Wrenches provided with a flexible gripping device to surround
No. of patents: 37
Last issue date: 02/19/2008


NumberTitleIssue Date
7331259Ratchet wrench
The present invention relates to a ratchet wrench including a wrench with one end provided with a pivot hole; a turning knob disposed in the pivot hole of the wrench and containing a dial; a wheel member disposed to the handle of the wrench and containing also a dia...
02/19/2008
7305923Universal boxcar with exterior metal surfaces
A universal boxcar is provided with exterior metal surfaces and load carrying capabilities of a conventional uninsulated boxcar and thermal transfer ratings of an insulated boxcar. The boxcar may be formed with interior dimensions corresponding generally with interi...
12/11/2007
7275463Tong 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
7263917Open-ended spin tool
An open-ended spin tool comprising a first z-shaped structure, a second z-shaped structure, the second z-shaped structure being pivotably associated with the first z-shaped structure, a first gripping portion cavity, a first actuatable roller and a second actuatable...
09/04/2007
7261044Boxcar with load restraint system
A boxcar and load restraint system are provided with improved load carrying capabilities and performance characteristics of uninsulated boxcars and insulated boxcars. An insulated boxcar with the load restraint system may have increased load carrying capacity, incre...
08/28/2007
7210413Universal boxcar
A universal boxcar is provided with load carrying capabilities of a conventional uninsulated boxcar and temperature ratings of an insulated boxcar. The insulated boxcar may be formed with interior dimensions corresponding generally with interior dimensions of an uni...
05/01/2007
7114234Conductor torquing system
A conductor torquing system is provided for large diameter threaded conductor casing which comprises a lower chain vise or fixed grip head adapted to grip a first joint of conductor casing, a plurality of movable arms operable to apply a retaining force to a second ...
10/03/2006
7080598Railway hopper car with longitudinal discharge openings
A railcar with longitudinal discharge openings is disclosed. In one embodiment, the railcar includes an underframe, a pair of sidewall assemblies and a hopper formed between the sidewall assemblies. The underframe has a center sill and a pair of side sills. The cent...
07/25/2006
7076852Conductor torquing system
A conductor torquing system is provided for large diameter threaded conductor casing which comprises a lower chain vise adapted to grip a first joint of conductor casing, a plurality of movable arms operable to apply a retaining force to a second joint of conductor ...
07/18/2006
7055609Handling and assembly equipment and method
A handling and assembly system and method for use in deploying tubing in a subterranean environment. A framework is used to linearly engage sequential tubular members as a tubing string is formed and run into a subterranean environment. The system also facilitates t...
06/06/2006
7051661Railcar with discharge control system
A railcar with discharge control system is disclosed. In one embodiment, a railway car includes an underframe and at least one hopper for transporting lading. The railway car further including the underframe including a center sill which defines in part a longitudin...
05/30/2006
7040465Slack adjuster with wear reduction
A slack adjuster for a vehicle brake includes a slack adjuster body having a cylindrical inner surface at least partially defining a chamber in the body. A worm gear is received in the chamber in the body. At least one low friction ring is interposed between the wor...
05/09/2006
7013759Apparatus 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
7000503Support system for power tong assembly
A tong assembly having a powered tong mounted over a backup tong is supported at its rear by a post with torque measuring means. The powered tong is supported at its front, near its throat, by one or more struts that extend downwardly to the backup tong. Such strut ...
02/21/2006
7000502Drillpipe 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
6935210Variable rack adjustment assembly for pipe spinning machines
A cam-operated, rack-on-rack adjustment assembly on a drill pipe spinner allows the user to easily and in small increments (distances) (three-eighths inch, one-quarter inch or less, or more) adjust the effective pipe engaging length of the drive chain. In other word...
08/30/2005
6920808Double-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
6910402Pipe 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
6851335Tong 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
6543313Powered wrench
A powered wrench includes a chain that is driven by a fluid motor. The chain engages a workpiece and rotates that workpiece in response to operation of the fluid motor. The fluid motor can be located spaced from the handle of the wrench or in the handle o...
04/08/2003
5865073Torque machines
A torque machine, for making or breaking screw-threaded joints between lengths of pipe, includes a rotatable head having an aperture into which a length of pipe is introduced, the rotatable head including a number of tongs which are spaced apart around th...
02/02/1999
5351582Pipe turning tool
A tool for turning an elongate pipe is disclosed. The tool comprises a base and a drive wheel mounted for rotation on the base. The drive wheel has a cylindrical outer surface may include a plurality of projections extending radially outward from the oute...
10/04/1994
5150638Power tong for making up or breaking out threaded joints of pipe
There are disclosed several embodiments of a power tong for making up or breaking out threaded joints of pipe wherein a head is rotatably mounted on a housing which is held against rotation and both the head and housing have slots adapted to be aligned to...
09/29/1992
4895056Tong and belt apparatus for a tong
A tong having a flexible belt and an anchor member for it. A belt assembly for mounting, disposing, and moving a flexible belt in a tong or in the rotary of tongs having rotary elements. One embodiment of such a tong for rotating a tubular member accordin...
01/23/1990
4843924Compact high-torque apparatus and method for rotating pipe
Apparatus for rotating a tubular well element about its longitudinal axis. There are first and second elongate casing sections pivotally connected to each other at a pivot. First and second driven sprockets are mounted, respectively, on the casing section...
07/04/1989
4774860Tong and belt apparatus for a tong
A tong having a non-endless or an endless flexible belt. A belt assembly for mounting, disposing, and moving a flexible belt in a tong or in the rotary of tongs having rotary elements. Such a tong for rotating a tubular member according to the present inv...
10/04/1988
4765209Wrenches
Improved hand tools for installing or removing cap screws, bolts, nuts and the like from locations of difficult access. In one embodiment, the tool is fitted with a continuous elastomeric member that engages the work item and holds it on the tool while im...
08/23/1988
4715253Line wrap power tongs
A power tong has two powered rings mounted on the tong frame for independent rotation, one ring, a reel carrier, carries a plurality of spring rewind line storage reels. Independent lines extend from each reel and each line is anchored to the second power...
12/29/1987
4694712Well string section spinning tool
A body is provided including a first end defining a vertically extending outwardly opening notch therein and at least one door is pivotally mounted from a corresponding side of the body end for swinging between a closed position across the body end and an...
09/22/1987
4604922Drill pipe turning device
A drill pipe spinner is disclosed including cam surfaces which in the course of tensioning the chain close the jaws of the spinner. The same cam surfaces provide jaw opening moments on release of the chain tension to allow the separation of the spinner fr...
08/12/1986
4512216Pipe spinner
A motor driven serpentine chain circulating device for spinning drill pipe into engagement for final tightening by other devices. Jaws are closed and locked to position chain for embracing pipe before the chain tension is applied. Chain tension does not d...
04/23/1985
4471674Spinning tool for pipe, rod and cylinder rotation
A main body is provided including a first side moveable laterally toward and away from an elongated member to be turned. The first side includes a pair of outwardly projecting arms whose base ends are pivotally supported from the body for swinging movemen...
09/18/1984
4324157Drill pipe clamp
A clamp for drill pipes includes an hydraulic motor adapted to drive a gear head which is keyed to a sprocket engaged to a sheave chain. The sprocket and the associated equipment are mounted between two plates which are also provided with an hydraulically...
04/13/1982
4212212Rotary drive apparatus
An improved rotary drive apparatus for a drill spinner, casing tong, or the like. The apparatus has a drive wheel and idler wheels adapted to drive an endless loop member trained around a cylindrical member to be driven. Pipe engaging rollers are utilized...
07/15/1980
4212577Grapple
A grapple attachment for the boom of a hoisting machine having a pair of arms movable between open and closed positions, the arms supporting an endless chain which, when the arms are closed, embrace a pole to be placed so that the pole can be lifted and t...
07/15/1980
4099429Pipe-spinning apparatus and method
According to the present apparatus and method, a silent chain having an inversely-bent internal portion is caused to be in direct pressure engagement with the external cylindrical surface of a drill pipe or other object to be spun. The chain is mounted on...
07/11/1978
4079640Pipe make up device
A device adapted to be used in conjunction with conventional pipe tongs for rapid make up of drill pipe joints. The device is pneumatically driven, and utilizes a flexible belt to engage a section of drill pipe and to spin the same until substantial resis...
03/21/1978
 
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