370 results about "Radial compression" patented technology

A prosthetic valve includes an annular frame and a skirt. The frame is radially expandable and compressible between a radially compressed configuration and a radially expanded configuration. The skirt has a fold around an inflow end of the frame so as to cover at least a portion of an outer surface of the frame and at least a portion of an inner surface of the frame. When the frame is in the radially expanded configuration, an outer portion of the skirt tightly conforms to the outer surface of the frame and the inflow end of the frame is axially spaced from the fold to form an axially extending gap between the frame and the fold. When the frame is in the radially compressed configuration, the inflow end of the frame extends axially so as to at least partially fill the axially extending gap.

The present disclosure relates to prosthetic valves that include valvular structures retained between two frames coupled to each other. In an example, the prosthetic valve includes a main frame, an inner frame which is disposed radially inwardly from, and is coupled to, the main frame, and a valvular structure disposed between the main frame and the inner frame. The main frame is movable between a radially compressed state and a radially expanded state. The inner frame comprises a plurality of struts and a plurality of spikes extending from at least some of the plurality of struts. The plurality of spikes are engaged with the valvular structure.

A hydraulic cylinder may include a cylinder, a rod slidingly disposed in the cylinder, and a scraper assembly. The cylinder extends between a first end and a second end and includes a retention feature positioned adjacent to the first end. The scraper assembly circumscribes the rod and the cylinder. The scraper assembly includes a ring, a collar and a plate. The ring includes an outer surface and a radially spaced inner surface. The inner surface contacts a portion of the rod. The collar includes a first portion adjacent to a first surface contacting the outer surface of the ring and a second portion adjacent to a second surface contacting the retention feature of the cylinder. The plate contacts the first surface of the collar. The collar and the plate cooperate to radially compress the first semi-circular ring and the second semi-circular ring against the rod.

A crimper for altering an implantable medical device from an uncompressed state to a compressed state. The crimper includes a plurality of crimper elements that define a crimper channel, each of the crimper elements including a non-planar surface that forms a portion of the crimper channel. Each non-planar surface is configured to apply non-uniform radial compression along a length of the implantable medical device during operation of the crimper when altering the implantable medical device from the uncompressed state to the compressed state. The crimper also includes handle configured to operate the crimper. Actuation of the handle decreases a volume of the crimper chamber to transition the implantable medical device from the uncompressed state to the compressed state.

A tertiary cooperative compression yielding and energy-absorbing support mechanism. The compression yielding and energy-absorbing anchor cables play a basic support role, and the circumferential compression yielding device can make the primary support compression yielding arch frame have a constant resistance deformation in the circumferential direction, while the primary support compression yielding arch frame and the secondary lining steel arch frame have a relative dislocation movement in the radial compression yielding device, and the tertiary compression yielding and energy-absorbing structures are cooperated with each other to adapt to the over-meter large deformation movement of the surrounding rock.

A delivery system for delivering a device to a body lumen includes an inner shaft coupled to a distal tip and an outer sheath slidingly disposed over the inner shaft. The outer sheath is configured to hold the device in a radially compressed configuration. The outer sheath includes a proximal capsule and a distal capsule. The delivery system further includes a removable sleeve configured to couple the proximal capsule to the distal capsule during loading of the device into the delivery system. A distal end of the distal capsule is configured to interlock with the distal tip after the device is loaded into the delivery system.

The thrombectomy device comprises a thrombectomy support, a connecting pipe and a traction wire, an inner cavity is formed in the thrombectomy support with the traction wire, the thrombectomy support with the traction wire comprises a cutting part located at the near end, and an opening which is communicated with the inner cavity of the traction wire and is closed in the circumferential direction is formed in the cutting part of the traction wire. The traction wire cutting part comprises a far-end end part and a near-end end part which have an axial distance; the connecting rod is connected with the near-end end part of the traction wire thrombectomy bracket; the far end of the traction wire is connected with the traction wire thrombectomy support, and when the traction wire is subjected to traction action pointing to the near end, the traction wire applies radial compression force to the traction wire thrombectomy support. The thrombus extraction efficiency of the thrombus extraction device is high.

Disclosed is a rupture disc assembly for use in making a temporary seal in a vessel such as a casing string. The rupture disc assembly may include a rupture disc having a side surface that has a shallow angle taper inward towards a bottom surface of the rupture disc, and a mounting apparatus to support the rupture disc so that the rupture disc forms the temporary seal. When a disc working pressure is applied to a top surface of the rupture disc, engagement / force transmission between the rupture disc and the mounting apparatus produces enough radial compression in the rupture disc due to the shallow angle taper to significantly mitigate or cancel tensile stresses thereby avoiding the rupture disc from breaking. The rupture disc may be configured to break when the rupture disc is subjected to a disc working pressure that is greater than the disc rupture pressure, thereby removing the temporary seal. An axial abutment surface feature may be provided which is configured and operable to limit downward axial movement of the rupture disc relative to said disc support mechanism and thus be operable to restrict the amount of compression said tapered wall surface of said disc support mechanism can exert on said at least a portion of said rupture disc when the top surface of the rupture disc is subjected to said hydraulic pressure within the well.

The invention relates to a plug assembly and a clamping member for a plug assembly. The plug assembly includes a clamping member, a clamping sleeve, and a housing. The clamping member is configured to receive and position a cable plug in a locked position at a front portion of the clamping member and engage around the cable at a rear portion of the clamping member. The clamping member and the clamping sleeve are configured to provide a fixed connection between each other, wherein the connection is configured to produce increased radial compression of the rear portion of the clamping member to clamp the cable. The housing is configured for insertion into a receptacle of a complementary plug assembly and for receiving and positioning the clamping member in a locked position. Positioning of the clamping member in the locked position is provided by a locking structure configured to provide release of the locked connection between the clamping member and the housing by tilting movement about a tilting axis transverse to the longitudinal axis of the housing.

The invention belongs to the technical field of deep sea equipment, and particularly relates to a deep sea plugging device and a floating base radial pressing force adjusting method thereof. The device is located in a water injection type pressurization cabin, and a driving sliding table mechanism and a floating base are sequentially arranged along the same axis; the driving sliding table mechanism comprises a sliding rail, a sliding rail cabin, a lead screw assembly, a driving motor, a tension and compression sensor and a displacement sensor, the motor drives a lead screw to enable the sliding rail to do reciprocating linear motion through sealing, the two ends of the sliding rail cabin are sealed, and plugging force and displacement data are collected through the sensor; the floating base is composed of a fixing plate, a floating positioning sleeve, a pressing disc and circumferentially distributed elastic adjusting assemblies, the connector female end is installed in the floating positioning sleeve, the elastic adjusting assemblies are distributed along the periphery of the floating positioning sleeve, when axial eccentricity exists in plugging of the connector male end and the connector female end, the floating positioning sleeve is automatically centered under the elastic effect, and interference of eccentric force is eliminated. According to the invention, high-precision, repeatable and controllable testing of the plugging performance of the connector in a high-pressure, high-salt and high-corrosion environment is realized.

The utility model discloses a multi-channel double-end floating connector, belongs to the field of connectors, solves the problem that an additional assembly tool is needed for fixing when a conventional contact is installed, and mainly adopts the technical scheme that the multi-channel double-end floating connector is provided for solving the problem. Comprising an insulating base body provided with a plurality of channels, an elastic conductor and an ejector pin connected to the end portion of the elastic conductor, the ejector pin compresses the elastic conductor and retracts into the channels after being stressed, the elastic conductor enables the ejector pin to be partially exposed out of the channels, step faces for limiting the ejector pin to be separated from the channels are arranged in the channels, and the ejector pin comprises a contact and an elastic portion. The elastic part has a radial compression state and a limiting state, when the elastic part is in the radial compression state, the outer diameter of the elastic part is smaller than the diameter of the channel, when the elastic part is in the limiting state, the elastic part abuts against the step face to limit the ejector pin to break away from the channel, and the elastic part has the deformation trend of keeping the limiting state. According to the utility model, the assembly of the ejector pin does not need an additional assembly tool.

A plug assembly having a clamping part, a clamping sleeve, and a housing. The clamping part receives and positions the cable plug at a front portion thereof and engages around a cable in a rear portion. There is a fixed connection between clamping part and sleeve, and the connection generates increasing radial compression on the rear portion of the clamping part to clamp the cable. The housing is pluggable into a complementary socket and receives and positions the clamping part in a latched position via a latching arrangement. The latching connection is releasable between the clamping part and housing by a tilting movement that results in a clamping part engagement element disengaging from a housing stop element. The housing can be pushed rearward along the cable, such that the cable plug and clamping part are no longer covered by the housing.

The invention discloses a railway overhead cable inspection robot, and relates to the technical field of overhead line inspection, the railway overhead cable inspection robot comprises an inspection box, the upper surface of the inspection box is fixedly connected with a working plate, the upper surface of the working plate is fixedly connected with a motor, and the upper surface of the working plate is rotatably connected with a rotating shaft; the outer side of the rotating shaft is fixedly connected with a rotating plate, and the upper end of the rotating shaft is fixedly connected with the output end of a motor. According to the railway overhead cable inspection robot, when the device moves to a cable butt joint part, two groups of rotating plates synchronously release radial extrusion on a first airbag, the volume of a second airbag is synchronously reduced, displacement generated by deformation of the second airbag can drive a driving plate to reversely rotate, and at the moment, two groups of laser detectors can synchronously move outwards under the driving action of a pulling plate; in view of the fact that the width of the cable butt joint part is obviously larger than that of a single overhead cable, the laser detector achieves more accurate coverage detection of the butt joint area through the design of enlarging the distance between the detection modules.

Provided is a method and apparatus for refining a ball joint stud. The method includes receiving and releasably securing the ball joint stud in a holder between a first die and a second die. The method further includes translating one or more of the first die and the second die towards the remaining die to apply a compression pressure to the ball joint stud. The compression pressure causes a plastic radial compression of the ball joint stud to a stroke length. The stroke length may be to induce a residual stress in the ball joint stud or increase a surface hardness of the ball joint stud. The first die and second die each include a contact surface configured to interface with the ball joint stud. The method may further include rotating one or more of the first die and the second die during the application of the compression pressure.

The invention relates to an axial compression spiral oil press. According to the technology provided by the invention, the original radial compression that the outer diameter of the main shaft outer sleeve is changed from thin to thick to change the volume is changed into the same outer diameter of the main shaft outer sleeve from beginning to end. And axial compression is adopted. Therefore, rotation friction resistance is greatly reduced, matching power can be saved by 40%, extrusion of oil residues is reduced due to the fact that axial compression is changed, and the phenomenon of paste squeezing is avoided. And labor is saved when the shaft is pulled outwards.

The bearing device comprises a bearing 10, which is provided with a first ring 12 and a second ring 14, which are rotatable relative to each other. The device comprises at least one insulating sleeve 26, which is attached to the second ring 14 of the bearing and is provided with a bushing 28 and an insulating insert 30, which is formed on at least one of the outer and inner surfaces of the second ring 14 and on at least one outer or inner surface of the bushing 28, which limit its radial thickness. The device also includes at least one elastically deformable element 32, which lies radially between the second ring 14 and the bushing 28 and is in radial contact with at least one of the surfaces of the first ring and the surface of the bushing 28 by being compressed in the radial direction.

A delivery system for delivering a device to a body lumen includes an inner shaft coupled to a distal tip and an outer sheath slidingly disposed over the inner shaft. The outer sheath is configured to hold the device in a radially compressed configuration. The outer sheath includes a proximal capsule and a distal capsule. The delivery system further includes a removable sleeve configured to couple the proximal capsule to the distal capsule during loading of the device into the delivery system. A distal end of the distal capsule is configured to interlock with the distal tip after the device is loaded into the delivery system.

Clamp suitable for joining two plain ends, with extra thickness on radially inner surfaces Clamp for joining two plain ends extending along a central axis, comprising: - a first half-collar (16A) and a second half-collar forming a strapping, - a sealing sleeve made of elastomeric material intended to surround the two plain ends and to be compressed radially between the two plain ends and the strapping, - systems for fixing the half-collars to each other. The collar is movable between a rest configuration and a clamped configuration. Each of the first half-collar and the second half-collar defines a radially outer surface (30) and a radially inner surface (32).In the rest configuration, the radially outer surface extends along a first arc of a circle (C1) having a first center (Ω1), and points (M) of the radially inner surface are located at a variable distance (D) from the first center due to at least one excess thickness (42). Figure for abstract: Figure 3.

This invention provides a pump body assembly, a compressor, and a refrigeration device. The pump body assembly includes a crankshaft, a pump body, a bearing, a piston, and connecting members. The bearing is sleeved on the crankshaft and located on one axial side of the pump body, forming a compression chamber with the pump body. The piston is sleeved on the crankshaft and located within the compression chamber. Multiple connecting members are arranged circumferentially along the pump body, passing through the bearing and connected to the pump body. Each connecting member includes a first connecting member and at least one second connecting member. The first connecting member is closer to the exhaust position of the compression chamber than the second connecting member, and is further away from the crankshaft axis than the second connecting member. The greater distance between the first connecting member and the crankshaft axis corresponding to the exhaust position significantly reduces the radial compression force exerted by the first connecting member on the inner wall of the compression chamber at the exhaust position, thereby reducing the localized protrusions formed on the inner wall of the compression chamber due to the first connecting member locking the pump body.

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.

The invention relates to an electricity taking device for electric power measurement and a use method thereof, and belongs to the technical field of electric power measurement. According to the electricity taking equipment for electric power measurement and the using method thereof, the electricity taking equipment for electric power measurement comprises a three-phase electricity meter and an installation frame, the installation frame is fixedly connected to the surface of the three-phase electricity meter, a safety module and an electromagnetic switch are installed in the installation frame, and a protection module fixedly connected with the installation frame is installed on the surface of the safety module; the protection module is fixedly connected between the safety module and the mounting frame through the rubber frame, and high elasticity and damping characteristics of the protection module form a first shock absorption barrier, so that low-frequency vibration can be effectively absorbed. The capsule ring is sleeved on the surface of the connection position of the terminal of the fuse module, and the capsule ring is tightly attached to provide continuous radial pressing force, so that the terminal is prevented from loosening due to vibration, the stability of electrical connection is ensured, and the problem of connection failure caused by vibration is fundamentally solved.

The invention relates to a stabilizer of a compressor, in particular of a radial compressor or diagonal compressor. The stabilizer comprises a first annular stabilizer chamber which encloses a main flow channel in the intake region of a compressor wheel. The stabilizer further comprises a second annular stabilizer chamber which encloses the first annular stabilizer chamber. The invention further relates to a compressor, in particular a radial compressor or diagonal compressor, comprising the stabilizer according to the invention, and to a turbomachine, in particular a turbocharger, comprising the compressor.

Systems and methods which provide a bulkhead anchor configuration in which an anchor body includes flexure finger members and a radial bulkhead operable in cooperation to impart a radial compressive force to a corresponding lead body are described. A first portion of a bulkhead anchor body may comprise a plurality of flexure finger members disposed in a corolla configuration forming an anchor lumen through which a lead body may be inserted. A second portion of the bulkhead anchor body may comprise a radial bulkhead having a flexure profile configured to operatively engage the flexure finger members. A locking mechanism may be used to retain the first and second portions of the bulkhead anchor in their relative positions such that the radial compressive force is maintained upon the lead body indefinitely.

The utility model relates to a valve frame and an artificial heart valve. The valve frame can be switched between a radial compression structure and a radial expansion structure; each of an inflow row grid, an outflow row grid and a middle row grid of the valve frame comprises two rows of wave rods which are oppositely arranged and connected with each other, each row of wave rods comprises a plurality of supporting rods, and the opposite ends of every two adjacent supporting rods are connected at a joint part; each joint part comprises a solid part and a vacant part radially penetrating through the solid part, the opposite ends of the two adjacent supporting rods are smoothly connected with the solid part on the two sides of the vacant part, the vacant part is also in a smooth shape, and an opening of the vacant part corresponding to the wave crest of the wave rod faces the wave trough in the axial direction; the opening of the vacant part corresponding to the wave trough of the wave rod faces the wave crest in the axial direction; the joint part is used for helping each grid to uniformly deform in the structure conversion process of the valve frame; the width of the solid part is larger than or equal to the sum of two times of the width of the supporting rod and the width of the vacant part. The heart valve prosthesis comprises the valve frame, a covering film and at least two artificial valve leaflets capable of being opened and closed oppositely.

To provide a favorable apparatus and the like.SOLUTION: An apparatus for delivering a vascular arteriovenous graft includes a tubular sleeve 44 defining an internal lumen adapted to be slidably disposed over a tunneling instrument 42. Upon advancement of the tunneling instrument to a desired subcutaneous anatomical location, a shaft is removed while the sleeve remains in a tissue. The sleeve has a linear slit 58 extending from a proximal end to a midpoint of the length of the sleeve. The lumen receives a distal end of the graft and at least a portion of a cannulation chamber. An end portion of the sleeve gradually expands along the slit, providing an enlarged diameter to accommodate the cannulation chamber. A longitudinal force applied to the sleeve from the tissue when the sleeve is removed from the tissue, fixes the graft within the sleeve by radial compression of the sleeve, and the graft and the sleeve are pulled through the tunnel to deploy the vascular graft.SELECTED DRAWING: Figure 8

An implantation accessory includes a steerable catheter comprising, on a distal end, a tubular protection tip having an internal lumen configured to house an implantable medical device. The tubular protection tip includes a fastening mechanism comprising an elastic deformable component that engages a rigid component disposed within a cavity of the implantable medical device to secure the implantable medical device within the tubular protection tip. The elastic deformable component can provide radial compression about the rigid component, and application of a torsion torque to the tubular element during implantation of the implantable medical device causes the elastic deformable component to release the rigid component.

This utility model relates to the field of rubber hose joint sealing technology, specifically a rubber hose joint sealing component, including a rubber sealing sleeve. A conical sealing sleeve is fixedly installed at one end of the rubber sealing sleeve, and a spiral compression ring is threadedly connected to the end of the conical sealing sleeve away from the rubber sealing sleeve. Multiple annular ridges are fixedly provided on the inner wall of the rubber sealing sleeve. When the spiral compression ring is rotated, the thread converts the axial displacement into radial compression. The conical surface of the conical sealing sleeve is compressed, generating an initial sealing force. When the fluid pressure inside the pipe increases, the rubber expands further under pressure, and the conical surface of the conical sealing sleeve engages more deeply with the thread of the spiral compression ring, forming a positive feedback seal. At the same time, the pipe and the annular ridges fit more tightly. Furthermore, when the spiral compression ring is rotated, its internal thread advances along the conical surface of the conical sealing sleeve, converting the axial force into radial compression force, forcing both the conical sealing sleeve and the rubber sealing sleeve to fit tightly against the pipe, thereby significantly improving the sealing performance of the rubber hose joint.

The utility model discloses a kind of paper sleeves for preventing metal coiled material from collapsing, comprising: main body cylinder, by multiple layers high-strength kraft paper adhesion;Radial reinforcement structure, is set to one end of the main body cylinder End, and it is distributed along circumference direction;Axial stiffener, along the axial extension of the main body cylinder, and it is set to the wall of the main body cylinder;Waterproof barrier layer, is set to the outer surface of the main body cylinder;Buffer layer, is set to the inner wall of the main body cylinder, the utility model relates to paper sleeve technical field.The paper sleeve for preventing metal coiled material from collapsing, radial compression strength is greatly promoted, can effectively resist the weight and external impact of heavy coiled material, the waterproof barrier layer of outer surface makes paper sleeve have waterproof capacity, effectively prevent inner circle indentation, scratch and other surface defects, improve the finished product quality of coiled material, embedded reinforcing ring or annular protruding portion is integrated with main body cylinder, stress is uniform, there is no risk of loosening and falling off.

A hose assembly includes an inner tube, a connector, a collar, and an outer metal conduit. The connector includes a stem portion inserted into a distal end of the inner tube and a body portion extending radially outward and axially rearward of the stem portion. The collar is substantially coaxial with and surrounds the distal end of the inner tube, with the collar being in radial compression against the inner tube. The outer metal conduit is substantially coaxial with and surrounds the inner tube and the collar, with the outer metal conduit terminating at a distal end welded to the body portion of the connector.

A tool for docking and installing the brake pipeline of a rail train belongs to the field of special pipeline connection auxiliary devices for rail vehicles, and includes: a base plate, a vertical clamping mechanism and a radial clamping mechanism, the vertical clamping mechanism includes a U-shaped frame, a vertical slide bar, a semi-ring clamp, a slide bar guide seat, a vertical pressure rod driving pull rod arm, a straight plate connecting rod and a V-shaped groove mechanism; the semi-ring clamp includes a clamp, a clamp connection seat and a clamp fastening bolt, and the V-shaped groove mechanism includes a V-shaped groove positioning block, a V-shaped groove positioning block connection seat and a V-shaped groove positioning block fastening bolt. The utility model sets a limit on the extreme distance of the horizontal push rod retreating, thereby preventing the angle β formed by the connecting line of the upper and lower through holes of the handle connecting rod and the axis of the push rod guide light hole from being less than an obtuse angle, which causes the angle self-locking of the connecting rod mechanism of the handle connecting rod.