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| Number | Title | Issue Date |
| 7762599 | Lifting anchor A lifting anchor (1) arranged to be mounted in an opening (33) in a plate wall (31) by use of an installation device, the lifting anchor (1) comprising: a leg (11), one end of the leg (11) being provided with a guide section... | 07/27/2010 |
| 7396060 | Pipe pulling device A pipe pulling device secures to the end of a pipe, with wedge action, for pulling by equipment. The device has a shaft, a housing upon the shaft, one or more wedges, a cone, nuts, eye nuts, O rings, and a sleeve, all arranged coaxially. First the nut is placed upon... | 07/08/2008 |
| 7278618 | Active camming device The present invention relates to a dual stem active camming device including a plurality of compression springs independently coupled to a plurality of cam lobes. The compression springs are positioned between the trigger and the clip-in point of the cam to protect ... | 10/09/2007 |
| 7275726 | Active camming device surface The present invention relates to an active camming device including a plurality of non-flat camming surfaces. In accordance with the present invention, the opposing camming surfaces are shaped to include substantially concave and convex surfaces respectively. In one... | 10/02/2007 |
| 7232167 | Cam-action pipe puller A cam-operated pipe puller for pulling and extracting a pipe through a conduit wherein the pipe puller has members for grasping the inner sides of the pipe and apparatus attached to the grasping members for holding the grasping members in a retained position as they... | 06/19/2007 |
| 7213656 | Apparatus and method for facilitating the connection of tubulars using a top drive An apparatus and method for facilitating the connection of tubulars using a top drive and is, more particularly but not exclusively, intended for facilitating the connection of a section or stand of casing to a string of casing. ... | 05/08/2007 |
| 7165634 | Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for a second purpose as the casing that is cemented in place during typical oil and gas well completions. Methods of operation are des... | 01/23/2007 |
| 7147068 | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for a second purpose as the casing that is cemented in place during typical oil and gas well completions. Methods of operation are des... | 12/12/2006 |
| 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 |
| 7048050 | Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for a second purpose as the casing that is cemented in place during typical oil and gas well completions. Methods of operation are des... | 05/23/2006 |
| 7036610 | Apparatus and method for completing oil and gas wells A method of drilling and completing a wellbore in a geological formation to produce hydrocarbons from a well comprising at least the following four steps: drilling the well with a retrievable drill bit attached to a casing; removing the retrievable drill bit from th... | 05/02/2006 |
| 7036595 | Removal of tubulars from wells Slips slidably disposed on a mandrel for lowering into a well inside a tubular to be removed from the well move outwardly to engage the tubular upon withdrawing the mandrel carrying the slips from the well. In one implementation there is a conical surface such that ... | 05/02/2006 |
| 7025536 | Tandem apparatus for bursting and replacing pipe A tandem rod or cable apparatus for bursting and replacing pipe, which includes a frame, two sets of oppositely-disposed hydraulic cylinders having piston rods, each of which pairs of piston rods are attached to a yoke, with a gripping element provided in each yoke ... | 04/11/2006 |
| 7021374 | Method and apparatus for connecting tubulars using a top drive An apparatus for facilitating the connection of tubulars, said apparatus comprising a winch (15), at least one wire line (4, 5), and a device (2) for gripping the tubular (3), the arrangement being such that, in use, the winch (15)... | 04/04/2006 |
| 7004259 | Apparatus and method for facilitating the connection of tubulars using a top drive An apparatus for facilitating the connection of tubulars using a top drive, the apparatus comprising a supporting member (13) connectable to said top drive (3) characterized in that it further comprises an internal tool (30) for engaging said tu... | 02/28/2006 |
| 6976298 | Methods and apparatus for connecting tubulars using a top drive An apparatus for facilitating the connection of tubulars using a top drive, the apparatus comprising a stator attachable to said top drive, and a supporting member for supporting a tool, wherein means are provided to allow substantially horizontal movement of said s... | 12/20/2005 |
| 6935805 | High reliability precision latch A reusable self-aligning precision latch, including a latch body for mounting a latch assembly, and an interface cone. A lead screw, coupled to the latch body on one end, pivots at an interface on the latch body allowing for self-alignment. A drive cam having a plur... | 08/30/2005 |
| 6729825 | Storage medium cartridge for use with a storage medium cartridge gripping assembly A storage medium cartridge that has a substantially rectangular housing with an aperture formed thereon is provided for use with a cartridge gripping assembly. The cartridge gripping assembly includes a gripping mechanism having a first end which releasably engages ... | 05/04/2004 |
| 6449824 | Manually manipulated tube jarring and removing tool A device that is manually manipulated to engage and or grip the inside of a tube sufficiently to transmit an upward pull on a tube to loosen it and remove it from its stuck condition. Its use includes a special METHOD of jarring the tube; a feature that c... | 09/17/2002 |
| 6354644 | Apparatus for handling hollow core rolls Apparatus for handling hollow core rolls of different core diameters, by picking up a roll disposed with its axis vertical, relating the same to a horizontal position, and sliding it onto a horizontally extending spindle. A stepped diameter holder having ... | 03/12/2002 |
| 5988719 | Internal pipe pulling device A pulling device for use with a pipe having an inside wall. The device includes a center slide. The device further includes at least one gripper plate that is adapted to cooperatively engage the center slide to cause the gripper plate to expand outwardly ... | 11/23/1999 |
| 5785223 | Boot carrier for sports articles A boot carrier having a pair of support members insertable into the interior of each boot to bear against the inside heel portion of each boot. A retainer device taking the form of an expandable, segmented clam-shell type or a buckled strap is employed to... | 07/28/1998 |
| 5671953 | Pipe end fittings An end fitting, particularly a pipe towing head, has an expandable element (44; 144) that is surrounded by a skirt (18) of a tubular body (14), so that a pipe end portion can be gripped between them. The element may have pipe gripping ribs which get less ... | 09/30/1997 |
| 5647627 | Pipe puller The present invention relates to a pipe puller which grips the inner bore of the pipe to be installed. A tapered, threaded, expandable gripping member is inserted into the bore of the pipe. The gripping member is turned clockwise which then expands the gr... | 07/15/1997 |
| 5597192 | Pipe pulling device A pipe pulling device having a multiple section body portion with a substantially hollow interior, a cap engagable with a pulling device and having a threaded member extending into the body portion hollow interior, and a securing plug having a threaded co... | 01/28/1997 |
| 5577788 | Pipe pulling device A pipe pulling device having a multiple section body portion with a substantially hollow interior, a cap engagable with a pulling device and having a threaded member extending into the body portion hollow interior, and a securing plug having a threaded co... | 11/26/1996 |
| 5094496 | Pipe pulling devices A two phase quick setting and quick releasing pipe pulling device having an outer housing for engaging the exterior of a plastic pipe and interior radially expandable and contractible jaws that can be quickly set on the interior surface of a plastic pipe ... | 03/10/1992 |
| 5029924 | Well pipe extractor apparatus An apparatus for removal of tubular pipe members, and particularly PVC pipe, from in-ground securement is provided. The apparatus includes an inverted sleeve for surrounding the pipe, with an engagement plug mounted within the pipe to capture the pipe bet... | 07/09/1991 |
| 4840230 | Retrievable wedging system for coupling downhole devices into cased bore holes A retrievable downhole wedging system is disclosed for firmly securing accelerometers and other instruments to the bottom of a cased bore hole. The system includes a pair of arcuate top wedges and a pair of arcuate bottom wedges for insertion between the ... | 06/20/1989 |
| 4773689 | Apparatus for clamping to the end of a pipe Releasable spider-type clamping apparatus for clamping to the end of a pipe comprises a system including a normal industrial line connection between a supply and control unit and the spider and a controllable operating device on the spider itself for oper... | 09/27/1988 |
| 4728217 | Gripper apparatus and method A gripper with leaf springs having fingers near their ends to engage and disengage work. The springs are respectively connected in an annular array to the end of a cylindrical support. The springs are diverged or expanded to cause the fingers to engage th... | 03/01/1988 |
| 4591200 | Lifting wedge The present invention relates to a lifting wedge which is intended in particular for lifting a paper roll in the vertical position, and which is made up of a substantially cylindrical lifting wedge part (1) having the cross sectional shape of the core hol... | 05/27/1986 |
| 4564231 | Apparatus for the lifting of coils, spools and the like Apparatus for the lifting of coils, spools and the like of the type which have an interior opening includes a carrying shaft, guide tracks arranged circumferentially about the carrying shaft, and clamping segments disposed on the guide tracks for movement... | 01/14/1986 |
| 4506924 | Rock lifting device A rock lifting device having an elongated shaft and at least two feather members. A pair of wedge surfaces are formed on the outer surface of the shaft adjacent its bottom end. The top end of each of the wedge surfaces is located farther inwardly from the... | 03/26/1985 |
| 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 |
| 4291910 | Disappearing grasping head Apparatus is described for grasping hollow bodies, such as bottles, from the inside. It is particularly useful in protecting grasping equipment used in conjunction with bottle coating equipment. On a movable rod inside a housing are mounted a structure ad... | 09/29/1981 |
| 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 |
| 4235469 | Pipe handling apparatus An apparatus for insertion into the interior of large diameter pipe or tubing which engages inner portions of the pipe so that the pipe may be lifted and moved. Slip assemblies are wedged into engagement with inner portions of the pipe. The amount of wedg... | 11/25/1980 |
| 4158415 | Remote access manipulator A remote access manipulator comprises a locking mechanism capable of self-alignment for performing operations on equipment located in areas where human access is limited. The manipulator further comprises a slave carriage located in the equipment on which... | 06/19/1979 |
| 4132147 | Store retention and release mechanism A retention and release mechanism utilizes a collet with deflectable fingers to allow assembly of the mechanism onto an object which is to be retained. Movement of the object toward the mechanism causes a force to be exerted on the bottom end of a plunger... | 01/02/1979 |
