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523 results about "Collet" patented technology

A collet /ˈkɒlɪt/ is a subtype of chuck that forms a collar around an object to be held and exerts a strong clamping force on the object when it is tightened, usually by means of a tapered outer collar. It may be used to hold a workpiece or a tool.

A cable mount for a fluid conduit

A cable mount for a fluid conduit, comprising a lower main body (7) with a bore therethrough and a shaped opening formed thereinto, an upper body (6) for engagement relative to the main body and comprising a cable bore therethrough and a receiving opening oriented towards the shaped opening in the main body and a collet (8) with a collet bore defined by a segmented body and having at least one tapered radial surface to abut a surface of the receiving opening in the upper body and a shaped lower portion with at least one radial surface corresponding to the shaped opening in the main body to resist rotation of the collet as the upper body is tightened onto the lower body, wherein the collet bore has a predefined dimension when the upper body is fully engaged with the main body.
Owner:CRALEY GROUP LIMITED

Four-claw backward-pulling double-clamping fixture

InactiveCN223222487UChucksMachiningPhysics
The utility model relates to the technical field of machining, in particular to a four-claw backward-pulling double-clamping fixture. After the first end face of the shell is roughly positioned through the positioning jig, the driving part synchronously drives the four clamping jaws to press and position the first end face of the shell on the positioning jig, and the other power source drives the connecting rod to drive the collet part to clamp and position the second end face of the shell. And the clamping deformation is smaller, the precision after machining is higher, it is guaranteed that the machining allowance of subsequent procedures is smaller and more uniform, and the machining efficiency is higher.
Owner:DMAG INTELLIGENT MASCH AUTOMATION (KUNSHAN) CO LTD

Fastener and fastener operating method

A fastener assembly with workpiece clamping functionality. The fastener assembly, in one example, includes a collet body with a cantilever leg that extends from a crown and includes a foot that mates with a sleeve opening in a collet body sleeve and the collet body sleeve at least partially circumferentially enclosing the collet body. The fastener assembly further includes a workpiece sleeve configured to, in an assembled configuration, mate with the collet body sleeve and prevent rotation of the collet body sleeve and a stud configured to theadingly engage the collet body sleeve or the collet body.
Owner:CENTRIX AEROSPACE LLC

Coil shiftable packer

A packer assembly includes (a) a mandrel bearing an expandable packer element, the mandrel having a ratchet section, a lower collet retaining shoulder, and defining a plurality of longitudinal slots; (b) a push sleeve connected to a ratchet ring by at least one shear pin, wherein the ratchet ring is disposed between push sleeve and the mandrel and engages the mandrel ratchet section; (c) a shift sleeve comprising an inner shift sleeve slidingly disposed within the mandrel and having a lower collet, the inner shift sleeve defining a profile for engaging a shifting tool, and an outer shift sleeve slidingly around the mandrel and connected to the inner shift sleeve with a plurality of bolts, wherein each bolt passes through a longitudinal slot defined by the mandrel; (d) wherein the shift sleeve and push sleeve is moveable between a running position and a released position. Also disclosed are methods of using a packer actuated by a sliding sleeve.
Owner:TIER 1 ENERGY SOLUTIONS

Impeller high-temperature over-rotation test device

The invention provides an impeller high-temperature over-rotation test device. The impeller high-temperature over-rotation test device comprises a long shaft, an impeller, a press-fitting assembly, a buffer assembly and a fixing piece. The long shaft comprises a first shaft body and a second shaft body which are concentric and different in diameter, the impeller is sleeved on the first shaft body, and press-fitting parts are formed at two ends. The first press-fitting assembly and the second press-fitting assembly are pressed on the press-fitting parts on the two sides of the impeller correspondingly, relative rotation is prevented through the rectangular keys, the double press-fitting assemblies are symmetrically arranged to balance axial force, and rotation stability is improved. The left / right clamping sleeve is matched with the conical surface of the left / right taper sleeve, and a tensioning wire groove is formed to adapt to impellers of different sizes and compensate size changes. The buffering assemblies are arranged in a mirror symmetry mode, the horn mouth design optimizes stress distribution, long-axis thermal expansion is absorbed, and vibration impact is resisted. The fixing piece provides axial fixing force, and the axial rigidity of the system is optimized. The device can ensure the reliable positioning of the impeller at high temperature and ultrahigh speed, and improves the test precision and reliability.
Owner:JIANGSU JICUI WEIRUI ADVANCED TURBINE POWER TECH CO LTD

Micrometer driver system and method

Devices and methods for driving a micrometer are provided. The device includes a body, a collet, a motor, and a controller. The body is configured to be coupled to a frame of the micrometer. The collet is configured to be coupled to a ratchet of the micrometer and to rotate the ratchet. The motor is coupled to the collet and rotates the collet to rotate the ratchet. The controller controls operation of the motor.
Owner:MEDRANO RUBEN

Collet baffle, a tool incorporating same, and a system and method incorporating same, for perforating and fracking a wellbore not having initial ports or sliding sleeves

A specialized wireline-conveyed collet baffle, adapted for use with a conveying tool, setting tool, and explosive charges, for perforating and fracking a wellbore. The collet baffle like prior art baffles possesses an annular ring for engaging a circumferential annular groove in a casing, but unlike prior art baffles possesses an inner annular hollow ring member which may be actuated by a push rod of a setting tool and slidably repositioned when such annular ring underlies and is engaged with the circumferential groove on a casing sub, thereby retaining the collet baffle in place in the casing string when the conveying tool, setting tool, and explosive charges are subsequently re-positioned uphole. An adapter tool for coupling the collet baffle to a conventional setting tool, a wireline system employing the specialized collet baffle and adapter tool, and a method for perforating and fracking a wellbore are further disclosed.
Owner:SC ASSET CORP

Milling machine powerful milling cutter head based on wedge block fastening detachable structure

The invention relates to the technical field of milling cutter heads, and discloses a milling machine powerful milling cutter head based on a wedge block fastening detachable structure, the milling machine powerful milling cutter head comprises a cutter handle, a clamping nut in threaded connection with the cutter handle, and a spring chuck for installing a milling cutter, a mounting seat is arranged in the clamping nut, a guide piece is arranged on the mounting seat, the guide piece comprises two sliding groove sets, each sliding groove set comprises a plurality of guide grooves, guide blocks are arranged in the guide grooves in a sliding mode, and the guide blocks are connected with the outer wall of the spring chuck. The milling machine powerful milling cutter head based on the wedge block fastening detachable structure can effectively solve the problems that in the prior art, in the clamping process of a spring chuck and a clamping nut, the requirements for experience and concentration of operators are high, inaccurate alignment is easily caused by improper manual operation, the installation efficiency is affected, and meanwhile, the installation cost is low. And the spring chuck and the clamping nut are shaken, so that the problem of unstable installation of the milling cutter is finally caused.
Owner:DONGGUAN FEIDIAN PRECISION MASCH EQUIP CO LTD

Systems for the high-speed application of paper-based end closures on composite

A system for assembling a container and closure comprising an expanding collet which has a plurality of pivoting collet segments, each configured to simultaneously pivot radially outward about a pivot point. The collet comprises a lip that is engagable with the rim of the open end of the container and an angled tip positioned radially inward from the lip and shaped to press a countersink portion of the closure against an interior wall of the container as the collet segments pivot radially outward. As the container and the chuck are brought together, the rim engages with the lips of the collet segments and causes the angled tips of the collet segments to pivot outward toward the interior wall of the container, thereby pushing the countersink portion of the closure against the interior wall of the container.
Owner:SONOCO DEVELOPMENT INC

Ring lamp support for shooting terminal

A shooting device includes a support bracket, a universal adjusting piece, a first light emitting piece, and a fixing piece. The universal adjusting piece is a shapeable coiled pipe, or, the universal adjusting piece includes a ball head and a rotating collet, and the ball head is rotatably disposed in the rotating collet. The fixing piece fixes a shooting terminal, the universal adjusting piece is disposed between the fixing piece and the support frame, and the first light emitting piece is disposed on a peripheral side of the fixing piece, so that the first light emitting piece synchronously moves with the shooting terminal, and the shooting terminal realizes pitch angle adjustment, left and right flip adjustment, and switch between a landscape mode and a portrait mode with respect to the support bracket, which enables the shooting terminal to quickly adjust the shooting angle in different dimensions.
Owner:MARVEL TECH SHENZHEN CO LTD

Mechanical shaft stop in a rotating machine

A rotating machine. The rotating machine comprises a tubular housing; a drive shaft disposed at least partly inside the tubular housing; a component disposed inside of the tubular housing that is coupled to the drive shaft and configured to do work as the drive shaft rotates; and a shaft stop assembly coupled to the drive shaft comprising a collet disposed around the drive shaft, a compressor flange disposed around the collet and around the drive shaft and engaging with the collet to compress the collet to form a friction fit with the drive shaft, and a compression stop disposed around the compressor flange and around the drive shaft, wherein a first axial end of the compression stop abuts an end of the collet.
Owner:HALLIBURTON ENERGY SERVICES INC

Anti-loose metal clamping sleeve type sealing joint combination

The utility model discloses an anti-loose metal clamping sleeve type sealing joint combination, and relates to the technical field of sealing joints. The anti-loose metal clamping sleeve type sealing joint combination comprises a joint body and a welding transition joint, the welding transition joint is connected to one end of the joint body, an annular groove is formed in the inner side wall of the end of the joint body, the diameter of the annular groove is matched with the outer diameter of the welding transition joint, the welding transition joint is inserted into the annular groove, and the welding transition joint is connected with the end of the joint body. A trumpet-shaped limiting groove expanding outwards is formed in a groove opening of the annular groove; the welding transition joint is sleeved with a locknut, the locknut is in sliding connection with the welding transition joint, a first threaded section in an external thread shape is arranged on the outer side of the joint body, the locknut is in threaded connection with the joint body, and a clamping sleeve is arranged between the inner wall of the locknut and the outer wall of the welding transition joint. The end, close to the connector body, of the clamping sleeve is provided with a conical cutting edge.
Owner:BEIJING BOLANG YUANTONG INFORMATION TECH

Machine tool

The machine tool includes: a first spindle that includes a collet chuck that grips a workpiece; a first headstock that rotatably supports the first spindle; an air cylinder that generates a driving force for changing a state of the collet chuck between a gripping state for gripping the workpiece and a release state for releasing the grip of the workpiece; a non-rotary transmitting member that transmits the driving force received from the air cylinder; a rotary transmitting member that rotates together the first spindle and transmits to the collet chuck the driving force received from the non-rotary transmitting member; strain detection means that is attached to the non-rotary transmitting member and detects a strain of the non-rotary transmitting member produced when the driving force is transmitted from the air cylinder to the collet chuck, and a deriving unit that derives the gripping force of the collet chuck based on a detection result of the strain detection means.
Owner:STAR MICRONICS CO LTD

Heat shrinkable collet

ActiveCN224526533UScrew threadWindage
The utility model discloses a kind of heat shrink novel collets, it is related to tool processing technical field, including rear end cylinder and front end cylinder, integrated fixed setting between rear end cylinder and front end cylinder, the inside of rear end cylinder is provided with threaded hole, the inside of front end cylinder is provided with clamping through-hole, threaded hole is communicated between clamping through-hole. The utility model provides a kind of heat shrink novel collets, by the structure cooperation design of whole, so that it can utilize thermal expansion and contraction principle to tool is clamped, realize need not to be grooved, and utilize its slotless design so that it changes the elastic clamping mode of traditional collet fundamentally, greatly improve the roundness of collet inner hole and outer circle, concentricity;In clamping aspect, the contact stress area when clamping is increased;When using in the high-speed rotation scene above 10,000 revolutions, the wind resistance brought by traditional elastic collet groove is greatly reduced.
Owner:SISHUI COUNTY SIHEBAN FEITENG PRECISION MACHINERY FACTORY

Connection device for connecting tubular components

A connection device includes a base body with a hose-receiving region, wherein a seal-receiving region is formed in the hose-receiving region and wherein a collet-chuck-receiving region is formed in the hose-receiving region, a collet chuck with a connection opening for receiving a line-shaped component, the connection opening having a connection opening diameter, the collet chuck having elastically resilient clamping elements distributed over the circumference, the collet chuck being received in the collet-chuck-receiving region so as to be displaceable in the axial direction relative to the base body, the clamping elements being displaceable in the radial direction by axial displacement of the collet chuck relative to the base body, a sealing element, which is arranged in the seal-receiving region and forms a seal between the line-shaped component and the base body. The connection device is configured to receive line-shaped components with different line diameters.
Owner:EISELE GMBH

Workpiece clamping jig and machining equipment

The utility model belongs to the technical field of workpiece positioning, and discloses a workpiece clamping jig and machining equipment. The workpiece clamping jig comprises a positioning rod, a collet chuck and a driving part, a positioning groove is formed in one end of the positioning rod, and a positioning hole is formed in the side wall, away from an opening of the positioning groove, of the positioning groove; the collet is partially arranged in the positioning groove, and a plurality of first claw parts are arranged at the end, close to the positioning hole, of the collet. The driving piece can drive the collet to move from one end of the positioning rod to the other end of the positioning rod and can position the collet. According to the workpiece clamping jig, the rod part can be inserted among the first claw parts, and the driving piece is used for driving the collet chuck to move from one end of the positioning rod to the other end of the positioning rod, so that the first claw parts abut against the rod part, and the section, close to the head part, of the rod part is effectively clamped; deformation and abnormal movement of the rod part in the head machining process are prevented, and therefore the machining quality of a workpiece is improved. In addition, the collet chuck can adapt to rod parts with different diameters to a certain extent.
Owner:JOUDER PRECISION INDAL KUSN

Metal drawer applied to collet guide rail

ActiveCN223220167UDrawersMetal drawerIndustrial engineering
The utility model is suitable for the technical field of home furnishing, and provides a metal drawer applied to a collet guide rail, which comprises a group of drawer door plates, the group of bottom plates are respectively arranged on one side of the group of drawer door plates; the drawer frames are arranged on the bottom plates respectively, and each drawer frame is composed of a high transverse drawer side and a high longitudinal drawer side as well as a short transverse drawer side and a short longitudinal drawer side; the first corner connecting pieces are respectively arranged on one group of high transverse drawing sides and one group of high longitudinal drawing sides; and the plurality of second corner connecting pieces are respectively arranged on one group of the short transverse drawing sides and the short longitudinal drawing sides. The metal drawer applied to the collet guide rail can effectively improve waterproof and moisture-proof performance, and has the advantages of being good in appearance effect, long in service life and suitable for the market.
Owner:GUANGDONG ZEBRA INTELLIGENT TECHNOLOGY CO LTD

Multiple connection drive shaft

Disclosed is a system to engage a plurality of tools. In the system a drive shaft and collet may be assembled to engage and disengage, selectively, a plurality of tools. User selection may allow use of a plurality of tools during a procedure or during a plurality of procedures.
Owner:MEDTRONIC PS MEDICAL INC

Collet and collet arrangement

The invention relates to a collet chuck and a collet chuck assembly with an axially displaceable, sleeve-like collet head 1 on which clamping elements with inclined surfaces 4, inclined radially inwards to the longitudinal axis 5 of the collet head 1, are arranged. These inclined surfaces bear against a conical surface 8 of a drawbolt 7, which is inclined accordingly to the longitudinal axis 5. When the collet head 1 and drawbolt 7 move relative to each other, the clamping elements slide along the conical surface 8 against a spring force, expanding radially outwards from a relaxed position in the region of the smaller diameter of the conical surface 8 to a clamped position in the region of the larger diameter of the conical surface 8. The clamping elements are several clamping jaws 3 distributed around the circumference of the collet head 1, each of which is guided radially displaceably in radial guide openings 2 in the collet head 1 against the radially inward spring force of one or more spring elements.
Owner:ZF FRIEDRICHSHAFEN AG

Novel lifting appliance disc welding part for heat treatment of composite drill rod

The utility model provides a novel lifting appliance disc welding part for heat treatment of a composite drill rod. The novel lifting appliance disc welding part comprises a large lifting disc and a fan-shaped disc, the mounting groove is formed in the surface of the large hanging scaffold, and the fan-shaped disc is arranged in the mounting groove. According to the novel lifting appliance disc welding piece for heat treatment of the composite drill rod, the welding rod penetrates through the mounting hole in the surface of the fan-shaped disc, the external thread end is matched with the T38 clamping sleeve to limit the welding rod on the surface of a large lifting disc, and the composite drill rod lifting appliance disc and the composite drill rod are connected and assembled; after the matched clamping sleeve between the threads and the external thread end are stabilized, the composite drill rod is hoisted, so that the problem that the composite drill rod cannot be subjected to heat treatment in a carburizing furnace is solved, and while the problem is solved, the composite drill rod is convenient to use and good in hoisting stability, and the service life of the composite drill rod is prolonged. And the hoisting problem of the composite drill rod carburizing furnace in production is well solved.
Owner:G Y HOPH STROVE TOOLS MFG CO LTD

Conical barrel clamping piece anchorage device for mechanical connection of building components and connection method

The invention provides a conical barrel clamping piece anchorage device for mechanical connection of building components, which comprises a conical barrel, a sleeve, clamping piece anchors, a component at one end and a component at the other end, two sets of clamping piece anchorage devices are respectively sleeved on the component at one end and the component at the other end, and the conical barrel is integrally formed and comprises an equal-diameter section and a variable-diameter section; the tail end of the equal-diameter section is fixedly connected with the maximum-diameter end of the variable-diameter section, the head end of the equal-diameter section is provided with internal threads, the two ends of the sleeve are provided with external threads, and the two conical barrels penetrate through a component at one end and a component at the other end respectively. The variable-diameter sections are arranged on the clamping piece anchorage devices arranged at the connecting end of the component at one end and the connecting end of the component at the other end in a sleeving mode respectively, and the minimum diameter of the variable-diameter sections of the conical cylinder is matched with the sum of the diameter of the building component and the thickness of the clamping piece anchorage devices. The invention further discloses a method for connecting building components through the cone clamping piece anchorage device type connecting device. The method has the advantages of simple structure, simplicity and convenience in construction, shortened construction period and wide application range.
Owner:THE THIRD CONSTR ENG CO LTD OF CHINA CONSTR SECOND ENG BUREAU

Small part inner cone angle detection device

The utility model belongs to the technical field of angle detection, and discloses a small part inner cone angle detection device which comprises a dial indicator (1), a clamping spring (3), a nut (4), a measuring block (5), a positioning pin (7), a base (8) and a support (9). A reference plane for placing a part (6) is arranged at the top of the base (8), a positioning hole is formed in the reference plane, and the positioning pin (7) is riveted in the positioning hole and is used for positioning the part (6); the lower end of the support (9) is fixedly connected with the base (8), a conical hole is formed in the upper end of the support (9), the clamping spring (3) is arranged in the conical hole, and the conical hole in the upper end of the support (9) is concentric with a positioning hole of the base (8). The nut (4) is used for locking the clamping spring (3); the bottom edge of the measuring block (5) is in line contact with the part (6), and the top surface of the measuring block (5) is in surface contact with the measuring rod (2). The utility model has the advantages of simple structure, high reliability and lower use cost, and is suitable for mass production.
Owner:NORTHWEST IND GRP CO LTD

Pipe hanger protection device

The utility model discloses a pipeline suspension protection device, aims at solving the problem of the limited use scene of the existing device and the time -consuming and labor -intensive installation operation. The device includes support rod, and support rod both ends are hinged mounting plate and boom respectively, and both ends are equipped with angle locking tensioning assembly. The bottom axial sliding of boom is equipped with movable rod, and its bottom end is connected with collet. Tensioning assembly contains clamping groove, clamping block and elastic thrust structure, and the installation angle is conveniently adjusted. The cooperation of driving structure realizes the lifting of movable rod. The C-shaped groove of collet cooperates with clamping plate, and the pipeline is clamped by the tensioning assembly B, and the inclined plate design is convenient for the pipeline to be put in. The device can adapt to complex installation surface, and the installation operation is simple, which is beneficial to improving the pipeline suspension efficiency.
Owner:YANGTZE ECOLOGY & ENVIRONMENT CO LTD

A downhole tool including a bore sensor

Provided is a downhole tool, a well system, and a method for forming a well system. The downhole tool, in one aspect, includes a latch collet including a collet body, the collet body having a collet body opening extending through a thickness (tcb) thereof and a plurality of collet fingers, as well as a mandrel positioned within the collet body, the mandrel having a mandrel slot therein. The downhole tool, according to this aspect, further includes a bore sensor positioned within the collet body opening and the mandrel slot, the bore sensor configured remain in a radially extended state when the latch collet is in too large size casing and configured to be pushed to a radially compressed state when the latch collet is in the correct size casing and thereby not prevent the collet body and the mandrel from sliding relative to one another.
Owner:HALLIBURTON ENERGY SERVICES INC

Clamping mechanism for press fitting

The clamping mechanism comprises a clamping jaw air cylinder and a base plate, a fixing seat is arranged on the base plate, a collet chuck is detachably arranged on the fixing seat, a discharging area of a cylindrical structure is arranged on the collet chuck, and clamping grooves corresponding to the clamping jaw air cylinder are distributed in the side wall of the collet chuck in the radial direction. A clamping groove is formed in the base plate, the clamping groove is communicated with the discharging area, a clamping arm capable of moving in the radial direction is arranged in the clamping groove, a clamping jaw of the clamping jaw air cylinder is connected with the clamping arm through a connecting arm, and a limiting groove for limiting the moving range of the connecting arm is formed in the base plate. The clamping arms driven by the clamping jaw air cylinders are arranged in the collet chuck, and the stress of the clamping jaw air cylinders is effectively transmitted to the clamping arms of the clamping grooves through the connecting arms, so that components in a discharging area are uniformly clamped, and the concentricity of the components in the assembling process is improved.
Owner:SUZHOU RUILITAIKE AUTOMATION TECH CO LTD

A motor rotor shaft turning clamp capable of adaptive holding and flexible positioning

ActiveCN224390556UAchieving Synchronous ShrinkageHigh self-centering accuracyPositioning apparatusMetal-working holdersElectric machineScrew thread
The utility model discloses a motor rotor shaft turning clamp that can be self-adaptive and tightly hold and flexibly position, relates to the field of machining, and is composed of Morse taper, external thread connecting shaft, spring collet, threaded sleeve and adjusting sleeve and other components for connecting with the main shaft of machine tool. The sliding cavity of the front end of the external thread connecting shaft is provided with a sliding sleeve and a telescopic spring, and the sliding sleeve is fixedly connected with the spring collet. The sleeve sleeve of the front end of the threaded sleeve is sleeved outside the spring collet, and the inner wall of the front end is provided with a conical surface that is matched with the conical head of the spring collet. The adjusting sleeve is connected with the threaded sleeve through threads, and can drive the limiting sleeve to push the spring collet to move. During use, rotating the adjusting sleeve makes the spring collet move backward, and the spring collet is tightened under the action of the conical surface, the rotor shaft is self-adaptively and tightly held, and the telescopic spring realizes flexible positioning and compensates for the axial and angular deviation. The clamp can automatically adapt to the rotor shaft with a diameter tolerance within a certain range, has high self-centering precision, is suitable for high-precision turning machining of conventional rotor shafts, and has simple structure and convenient maintenance.
Owner:HENGDONG SHENGJIE MACHINERY MANUFACTURING CO LTD

Multistage electro-hydraulic connector for completions

A method for disconnecting an upper completion from a lower completion includes positioning a cutter at a first position, actuating the cutter to initiate a cut in a mandrel, wherein the mandrel is disposed within the downhole tubing assembly, and wherein the mandrel is separated into an upper portion of the mandrel and a lower portion of the mandrel by the cut, lifting the cutter out of the downhole tubing assembly, lifting the upper portion of the mandrel as a part of a pull out of hole (POOH) operation, wherein the upper portion of the mandrel is configured to pull a support sleeve during the POOH operation, disengaging a locking mechanism between a cut-to-release (CTR) collet from the lower completion, and lifting the upper completion up from the downhole tubing assembly, wherein the upper completion comprises the upper portion of the mandrel, the support sleeve, and the CTR collet.
Owner:SCHLUMBERGER TECH CORP +3

Tool holder and anti-rotation member

To provide a tool holder capable of gripping a tap so as not to rotate relative to it even when a collet without a square hole is used. [Solution] A tool holder (1) includes a collet chuck body (10), a collet (20), and a rotation prevention member (40). The collet chuck body has a threaded hole portion (10a) with a male thread on its inner circumferential surface, a straight hole portion (10b) with a larger diameter than the threaded hole portion, and a tapered hole portion (10c) that continues to the straight hole portion and increases in diameter toward the tip, with these hole portions arranged in this order along the axial direction. The collet fits into the straight hole portion and the tapered hole portion and clamps the shank portion (61) of a tap (60). The rotation prevention member screws into the threaded hole portion and has a square hole portion (44) that non-rotatably receives the corner of the tap.
Owner:NIKKEN KOSAKUSHO WORKS LTD

Multistage electro-hydraulic connector for completions

A method for disconnecting an upper completion from a lower completion includes positioning a cutter at a first position, actuating the cutter to initiate a cut in a mandrel, wherein the mandrel is disposed within the downhole tubing assembly, and wherein the mandrel is separated into an upper portion of the mandrel and a lower portion of the mandrel by the cut, lifting the cutter out of the downhole tubing assembly, lifting the upper portion of the mandrel as a part of a pull out of hole (POOH) operation, wherein the upper portion of the mandrel is configured to pull a support sleeve during the POOH operation, disengaging a locking mechanism between a cut-to-release (CTR) collet from the lower completion, and lifting the upper completion up from the downhole tubing assembly, wherein the upper completion comprises the upper portion of the mandrel, the support sleeve, and the CTR collet.
Owner:SCHLUMBERGER TECH CORP +3

Method for gripping constant-velocity universal joint component

Provided is a gripping method including: a phase matching step of matching tool relief grooves of a contact metal member and track grooves of a constant velocity universal joint component with each other in phase; a measuring step of measuring phase differences between the track grooves of the constant velocity universal joint component and a female spline of the constant velocity universal joint component; a matching step of matching, based on a result of the measuring step, a stopper with a recessed portion of the female spline having the smallest phase difference and gripping the constant velocity universal joint component by a collet chuck. Under a state in which the constant velocity universal joint component is gripped by the collet chuck, the contact metal member holds the constant velocity universal joint component.
Owner:NTN CORP