Class 294/86.15 - Fluid pressure operator

Subclass of Class 294 - Handling: hand and hoist-line implements
Definition: Grapples wherein the separate means comprises a fluid reactive
No. of patents: 37
Last issue date: 08/17/2010

Number	Title	Issue Date
7775572	Gripping tool with fluid grip activation A gripping tool has at least one body, including an associated load adaptor adapted to be connected to and interact with one of a drive head or reaction frame. A gripping assembly, carried by the body, has a grip surface adapted to move from a retracted position to ...	08/17/2010
7243722	Expander device Apparatus (9) for radially expanding an expandable member, the apparatus including a plurality of radially moveable fingers (22). The radially moveable fingers (22) can move between two positions; in a first position, the moveable fingers (22...	07/17/2007
7222669	Method of repair of collapsed or damaged tubulars downhole A method of repairing tubulars downhole is described. A swage is secured to a force magnification tool, which is, in turn, supported by an anchor tool. Applied pressure sets the anchor when the swage is properly positioned. The force magnification tool strokes the s...	05/29/2007
7096952	Latch mechanism guide An apparatus and method for guiding a fish into engagement with a latch mechanism on a fishing tool, by expanding the ends of a set of fingers into contact with a bore hole. The ends of the fingers surround the fish and guide the fish and the latch mechanism togethe...	08/29/2006
7083209	Hydraulic overshot tool without a nozzle, and method of retrieving a cylinder The present invention provides an improved hydraulic overshot tool. The overshot tool mechanically engages a cylindrical body downhole attempting to be retrieved. In the event retrieval is unsuccessful, the overshot tool may be hydraulically released from the cylind...	08/01/2006
7073598	Apparatus and methods for tubular makeup interlock The present invention provides for an apparatus and methods to prevent an operator from inadvertently dropping a string into a wellbore during assembling and disassembling of tubulars. Additionally, the apparatus and methods can be used to for running in casing, run...	07/11/2006
7055609	Handling 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
6926099	Drill out bi-center bit and method for using same A drill out bi-center bit and a method for using the same are provided that offer the ability to drill out cement and casing shoes, and increased stability. The bi-center bit includes a bit body having a first end operable to be coupled with a drill string, a second...	08/09/2005
6827148	Downhole tool for use in a wellbore The present invention provides a method and an apparatus for use in a wellbore tool. The apparatus includes a body and a sliding member, wherein the sliding member and a mechanical portion moves between a first position and a second position. A valve assembly causes...	12/07/2004
6719052	Latch mechanism guide An apparatus and method for guiding a fish into engagement with a latch mechanism on a fishing tool, by hydraulically expanding the ends of a set of fingers into contact with a bore hole. The ends of the fingers surround the fish and guide the fish and the latch mec...	04/13/2004
6431626	Tubular running tool An improved tubular running tool and method is disclosed for use on a rotary or top drive drilling rig of the type for inserting and selectively, internally gripping a tubular which may be utilized to lift, lower, rotate, and torque tubulars, and which ma...	08/13/2002
6309002	Tubular running tool A tubular running tool and method adapted for use on a rotary or top drive drilling rig of the type for inserting and selectively, internally gripping a tubular which may be utilized to lift, lower, rotate, and torque tubulars, and which may be used to fi...	10/30/2001
6142545	Casing pushdown and rotating tool A pushdown and rotating tool for holding, pushing, and rotating a floated casing string into a wellbore is provided. The tool includes a mandrel, a housing attached about the external diameter of the mandrel and shaped to receive a collared casing, a jaws...	11/07/2000
6095583	Wellbore fishing tools An apparatus for retrieving an object from a wellbore has been invented having an inner body and a longitudinal fluid flow bore therethrough, and at least one lateral flow bore therethrough, the bottom end having an opening suitable for receiving therein ...	08/01/2000
5791712	Spear fishing tool A spear fishing tool for engaging an object to be removed from a well bore, commonly called a "fish". The spear fishing tool is characterized by a cylindrical housing, typically attached to a length of coiled tubing by means of a top sub and fitted with a...	08/11/1998
5765638	Tool for use in retrieving an essentially cylindrical object from a well bore There are disclosed two embodiments of a tool for use in retrieving a cylindrical object which is stuck within a well bore, or, in the event the object cannot be retrieved, releasing therefrom to permit recovery of the tool....	06/16/1998
5639135	Fishing tool and method of operation A fishing spear for retrieving a fish from a wellbore comprises a mandrel fixedly secured to an upper sub, a collet assembly telescopically surrounding the mandrel and a support sleeve telescopically surrounding the mandrel and positioned between the mand...	06/17/1997
5605366	External pulling tool and method of operation An external pulling tool for retrieving a fish from a wellbore comprises a mandrel fixedly secured to an upper sub, an outer cover fixedly secured to and depending from the upper sub, a collet assembly telescopically surrounding the bottom portion of the ...	02/25/1997
5580114	Hydraulically actuated fishing tool A fishing tool is disclosed which is responsive to hydraulic pressure to move away support for collets to allow the collects to deflect and make contact with the stuck object. Upon removal of the hydraulic force, the support for the collets is returned, p...	12/03/1996
5242201	Fishing tool A spear and overshot are provided that use a plurality of collets. The collets are initially displaced by the fish until they are presented against a reduced diameter portion of the apparatus. At that point, the collets are inwardly attracted and the appa...	09/07/1993
4951988	Casing hanger packoff retrieving tool The retrieving tool for retrieving a packoff from a casing hanger located in a subsea well has a pressure intensifying assembly. The retrieving tool has a mandrel which is connected to a string of conduit lowered from a floating vessel. A body is carried ...	08/28/1990
4759903	Apparatus for automatically starting the drop of an absorbing member into a nuclear reactor core In order to automatically initiate without any intermediate instrumentation chain the drop of absorbing members into the core of a nuclear reactor, in the of a drop in the cooling liquid level to below a given threshold and, optionally, a rise in the pres...	07/26/1988
4750770	Device for connecting a drill column to a pipe or the like An actuating system for operating pressure-medium actuated coupling members for remotely connecting a drill column to a pipe or pipe casing, where the location of the connection is inaccessible, comprises a directional control valve (48) switchable by an ...	06/14/1988
4705314	Tool loading device A tool loading device which enables a wireline tool to be presented vertically to a vertical lubricator comprises two sections--a centralizing hub which is connectable to the upper end of a tool entry system and a latch arm section which carries the tool....	11/10/1987
4585369	Mechanical connection means This connection means comprises a male connector (1) with a circular groove (5) and a female connector comprising a body (2), a cap (3) and a sleeve (4). The cap (3) hangs from the bottom end of body 2 within which it is able to partly slide. The cap has ...	04/29/1986
4550941	Hydraulic drive mechanism The hydraulic drive mechanism comprises an hydraulically actuated rod drive mechanism that cooperates with a pivotable latching mechanism. The pressurized reactor coolant is utilized to raise the drive rod into contact with and to pivot the latching mecha...	11/05/1985
4443130	Remotely operated tool for performing functions under water Remotely operated tool for performing functions at underwater installations. Tools according to the invention are especially useful for remote retrieval and installation of wireline bushings in hollow guide posts. Particularly advantageous embodiments of ...	04/17/1984
4368911	Subsurface conduit setting and pulling tool A tool for setting or pulling a subsurface tool from a conduit having a pressure charge gas piston and cylinder which are releasably locked together. The piston and cylinder is actuated by setting slips on the tool and unlocking the piston and cylinder. F...	01/18/1983
4320915	Internal elevator An internal elevator to be received within and internally grip and support a tubular member such as a well platform supporting pile, and including slips preferably mounted within openings in an outer body and actuable radially outwardly into gripping enga...	03/23/1982
4273372	Apparatus for use in lowering casing strings An apparatus for use in lowering casing strings or other parts from a floating unit to a subsea well which includes an expansion-type casing running tool employing extendible latches that have left-handed threads cut on their exterior for engagement with ...	06/16/1981
4244616	Tool for exchanging and transporting irradiation capsules of a nuclear reactor A tool for exchanging and transporting irradiation capsules of a nuclear reactor using water, which capsules contain samples experiencing, during the operation of the reactor, comparable irradiation to that experienced by the reactor vessel, between the v...	01/13/1981
4100968	Technique for running casing There is disclosed a technique for running casing in a well in which the casing joint about to be connected to similar joints suspended in the hole is releasably grasped on the inside of the joint. The casing joint is elevated through the releasable conne...	07/18/1978
4052861	Inflatable securing arrangement An inflatable securing arrangement includes support means having a longitudinally extending annular elastomer body bonded thereto. An annular reinforcing is also secured to the support means and extends longitudinally thereof, and gripping means are carri...	10/11/1977
3950020	Gripping device A gripping device for gripping and moving control bars and fuel elements in core reactors in which a pair of grippers are mounted on one end of a gripper housing with independent actuators for the grippers in the housing. A lost motion connection between ...	04/13/1976
3944273	Retrieving tool for wellhead packing A retrieving tool has resilient fingers engageable with a pulling collar of the actuator ring of a wedge locked underwater wellhead packing to release the lock and the packing for retrieval from the wellhead. The retrieving tool has a body connected to a ...	03/16/1976
3941413	Quick release latch for reactor scram A simple, reliable, and fast-acting means for releasing a control element and allowing it to be inserted rapidly into the core region of a nuclear reactor for scram purposes. A latch mechanism grips a coupling head on a nuclear control element to connect ...	03/02/1976
3936089	Gripping device for a lifting mechanism, especially in a core reactor for depositing and picking up fuel elements and control rods A gripping device, especially for use for depositing and withdrawing fuel elements and control rods in a nuclear reactor, in which the gripping device has an upper body part connected to a hoisting and transporting mechanism and a lower part reciprocably ...	02/03/1976

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Class 294/86.15 - Fluid pressure operator