48results about How to "Prevent rotational displacement" patented technology

The present invention is a handle for controlling the deflection of a distal end of a catheter body. The catheter body includes first and second deflection wires that extend through the catheter body from the distal end of the catheter body. The handle comprises a slide base, an adjustment knob, a first slide and a second slide. The slide base includes a first end, a second end, and a slide compartment longitudinally extending through at least a portion of the slide base. The adjustment knob is rotateably connected to the first end of the slide base and includes a hole extending through the knob, wherein at least a portion of an inner diameter of the hole includes an internal right thread and an internal left thread. The first slide is located in the slide compartment, is adapted to be coupled to the first deflection wire, and includes an external right thread. The second slide is located in the slide compartment, is adapted to be coupled to the second deflection wire, and includes an external left thread. The internal threads of the knob engage the threads of the slides. Consequently, in operation, rotation of the adjustment knob causes the slides to displace in opposite directions within the slide compartment and the distal end of the catheter body to deflect accordingly.

A dual piston-pump apparatus is provided having a pump chassis that includes a pair of spaced-apart, elongated piston bores, and a lead screw shaft. This shaft includes a motor driven end, and another portion thereof rotatably mounted to the chassis for rotation about a screw rotational axis. A piston drive member threadably cooperates with the lead screw shaft for selective reciprocating movement longitudinally along the screw rotational axis thereof between a first position and a second position. The drive member includes a pair of spaced-apart piston shafts, each piston shaft of which includes a respective piston head slideably received in a respective piston bore of the chassis. As the drive member is driven along the screw shaft between the first position and the second position, each piston head is simultaneously reciprocated between a dispensing condition and an aspiration condition. An anti-rotation device cooperates between the pump chassis and the drive member to substantially prevent rotational displacement of the drive member relative to the pump chassis and about the screw rotational axis during rotational motion of the screw shaft.

A drive unit includes an electric motor, a worm shaft coupled to the motor, a worm gear engaging with the worm shaft, and an output shaft connected to the worm gear. The motor has a motor shaft on which the worm shaft is fixed. The worm shaft is made of plastic. The drive unit further includes a metallic sleeve press fitted to the motor shaft. An outer profile of the sleeve is non-circular. A correspondingly shaped receiving hole is formed in the worm shaft to receive the sleeve. The sleeve rotates with the motor shaft and drives the worm shaft.

A drive unit includes an electric motor, a worm shaft coupled to the motor, a worm gear engaging with the worm shaft, and an output shaft connected to the worm gear. The motor has a motor shaft on which the worm shaft is fixed. The worm shaft is made of plastic. The drive unit further includes a metallic sleeve press fitted to the motor shaft. An outer profile of the sleeve is non-circular. A correspondingly shaped receiving hole is formed in the worm shaft to receive the sleeve. The sleeve rotates with the motor shaft and drives the worm shaft.

The invention discloses a monitor mounting and fixing device, comprising a hemispherical monitor body and a flexible bracket. The bottom edge of the monitor body is provided with at least one horizontal chute; one end of each chute, which is close to the monitor body, is vertically provided with a main baffle plate; the flexible bracket is formed by aerofoil-shaped plates corresponding to the chute and surrounded at the bottom edge of the monitor body; each aerofoil-shaped plate is integrally provided with a slide rail extending towards the center of the monitor body and sliding relatively in each chute; the joint of each slide rail and the aerofoil-shaped plate is vertically provided with an auxiliary baffle plate corresponding to the main baffle plate; and the corresponding auxiliary baffle plate and main baffle plate are connected through a spring. The spring is used to drive the flexible bracket so as to from the monitor mounting and fixing device with variable diameter. The monitor mounting and fixing device is simple in structure and convenient to operate.

This rotary control system for a device includes a rotary control member, and a rotary control handle, a blocking device that can be selectively moved, when the rotary member is in its first position, between a blocking configuration and a release configuration. This system further includes a locking plate, rotationally mobile about the first axis relative to the rotary member, when the rotary member is in its first position, between a locking position and an unlocked position. The locking plate is such configured that when the blocking device moves between the corresponding locking position and the unlocked position, the blocking device is switched between the blocking configuration and the release configuration.

A lock device that prevents operation of at least one chassis spindle from retracting a latch bolt, and which may provide auto-unlock features. Locking of the lock device can effectuate linear displacement of a slider body from an unlocked position to a locked position. Linear displacement of the slider body is translated into rotational displacement of a cam body that includes, or is coupled to, a locking shaft having a cam protrusion, thereby rotating the cam protrusion. As the cam protrusion rotates, the cam protrusion lifts a locking lug to a locked position wherein the locking lug prevents rotational displacement of a first chassis spindle. When in the locked position, a slider arm of the slider body can be positioned in a retention slot. Subsequent rotatable displacement of a second chassis spindle can effectuate displacement of the slider arm from the retention slot and facilitate unlocking of the lock device.

The invention discloses a marine drilling riser connecting device, an assembling method and a marine riser structure, and belongs to the technical field of marine oil drilling devices. The device comprises at least two connecting blocks arranged at a flange plate connecting position of a marine riser; the connecting blocks are assembled on the outer side of the flange plate connecting position of the marine riser in a combined mode; assembling grooves used for assembling flange plates are further formed in the inner sides of the connecting blocks; and the connecting blocks are assembled on the flange plates through the assembling grooves and then are fixedly assembled on the flange plates through bolts. The problem that the contact surfaces at the connecting positions of traditional marine risers are not attached and are damaged, and finally leakage accidents of marine risers are caused is effectively solved, attachment of flange surfaces at the connecting positions of the flange plates is effectively promoted through the split design of the connecting blocks and the design of the assembling grooves, and a better axial limiting effect is provided.

The invention relates to a craniomaxilla retractor comprising a retractor body sleeve, a retractor body screw and a titanium fixing plate. The screwed end of the retractor body screw is arranged in the retractor body sleeve, one end of the titanium fixing plate is fitted to the retractor body screw in a screwed manner and is arranged in the retractor body sleeve, and the other end is exposed to the retractor body sleeve. The craniomaxilla retractor further comprises a universal joint and an extension rod assembly, one end of the universal joint is connected to the retractor body screw, the other end is connected to the extension rod assembly detachably, and the extension rod assembly rotates to drive the retractor body screw to rotate so as to drive the titanium fixing plate to move along the retractor body sleeve. The craniomaxilla retractor is provided with the detachable extension rod, the wound cutting of a patient is omitted while the extension rod is detached, and accordingly the pain of the patient is reduced greatly.

Apparatus for coupling a pour spout fitment (11) to a container (12) comprising: - an arm (16) oscillating according to an oscillation axis (A); - a pour spout fitment support (17) slidably provided on the arm along a direction of translation (B) transverse to said oscillation axis; - a welding head (18) slidable in a direction of welding (C), transverse to the oscillation axis; - a pour spout fitment feeder (19) provided with a power head (20) suitable to couple a pour spout fitment to the support (17); - first motor means (21) for oscillating the mobile arm between: - a loading position in which the support faces the power head, and - an inserting position in which the support faces the welding head; - second motor means (22) connected to the support and to the welding head for slidingly driving them apart and together between: - an open inserting position; - and a closed welding position.

The invention relates to a near-end side-by-side dual-screw type proximal femoral nail. The near-end side-by-side dual-screw type proximal femoral nail comprises a femoral nail main nail, two near-endhead and neck screws and a far-end lock nail, wherein the femoral nail main nail comprises a near-end part, a transition part and a far-end part; a near-end screw passage allowing the two near-end head and neck screws to be mounted side by side is formed on the near-end part, and a far-end screw passage cooperating with the far-end lock nail is arranged on the far-end part; an inner lock nail forfixing the near-end head and neck screws is also in screw connection to the end of the near-end part; and an internal thread hole cooperating with the inner lock nail is formed in the near-end part and is sealed through a tail cap. Through the two near-end head and neck screws arranged side by side on the near-end part, the femoral nail has good screwing resistance, can effectively antagonize inversion trend of femoral head and neck fracture fragments, and can reduce stress of the head and neck screws.

The invention discloses slitting equipment for a thin plate. The slitting equipment for the thin plate comprises a base, a table top, a shell cover and a plate pressing device, wherein supporting plates are symmetrically arranged on the left side and the right side of the top of the base, cutting shafts are arranged between the supporting plates, the two ends of the cutting shafts are rotationallyconnected to the supporting plates through first bearings, the left ends of the cutting shafts penetrate out of the supporting plates, the left end parts of the cutting shafts are in transmission connection with power equipment through a belt transmission mechanism, cutting blades are fixedly mounted on the cutting shafts in a sleeve manner, the shell cover is erected at the tops of the supporting plates, the table top is located between the two supporting plates, the table top is fixedly installed on the base, and the plate pressing device is located on the inner sides of the supporting plates and comprises a sliding rail and a sliding block. According to the slitting equipment, when the slitting equipment works, a worker pushes the plate from the front end of the equipment, a power mechanism drives the cutting shafts to rotate through the belt transmission mechanism, the cutting shafts rotate, and the plate enters the space between the cutting blades on the two cutting shafts to becut.

A lock device that prevents operation of at least one chassis spindle from retracting a latch bolt, and which may provide auto-unlock features. Locking of the lock device can effectuate linear displacement of a slider body from an unlocked position to a locked position. Linear displacement of the slider body is translated into rotational displacement of a cam body that includes, or is coupled to, a locking shaft having a cam protrusion, thereby rotating the cam protrusion. As the cam protrusion rotates, the cam protrusion lifts a locking lug to a locked position wherein the locking lug prevents rotational displacement of a first chassis spindle. When in the locked position, a slider arm of the slider body can be positioned in a retention slot. Subsequent rotatable displacement of a second chassis spindle can effectuate displacement of the slider arm from the retention slot and facilitate unlocking of the lock device.

The invention provides a quick release structure of a steering wheel for effectively preventing the abrasion of an inner ring and an outer ring, guaranteeing the stability of relative positions of the outer ring and the inner ring, preventing relative rotating displacements of the inner ring and the outer ring, guaranteeing the rotating stability of the steering wheel and preventing unnecessary accidents. The quick release structure comprises the outer ring and the inner ring, wherein the outer ring is provided with a push rod accommodating groove at the axial eccentric position, the push rod accommodating grooving intersecting the axis; the push rod accommodating groove is communicated with an inner hole of the outer ring; a push rod is mounted in the push rod accommodating groove and is provided with a yielding groove corresponding to the inner ring; and a positioning groove fitting the push rod is formed in the outer side of the inner ring. The quick release structure is characterized in that the inner wall of the outer ring is polygonal in shape; and the outer wall of the inner ring fits the inner wall of the outer ring.

The invention discloses a bar extruding molding die with holes, which comprises a mandrel seat, a mandrel and a bar forming mold body, the mandrel seat is a disk mandrel seat, and the outermost side far away from the center of the circle is provided with A protruding fixing part, through which the mandrel seat is detachably fixed above the bar forming die body and completely covers the bar forming die body, the mandrel passes through and is assembled in the axial direction of the mandrel seat In the center, the core rod passes through the rod forming die body and is suspended and fixed inside the rod forming die body through the core rod seat. The bar extrusion molding die with holes of the present invention is provided with a protruding fixing part on the mandrel seat, and the mandrel seat can completely cover the bar forming die body through the fixing part, and there is no gap between the mandrel seat and the die body. There is a gap, which avoids the problems that the core rod seat cannot be taken out and the mold cannot be cleaned due to the accumulation of material in the gap, thereby avoiding the product from being dirty.

The invention discloses a swirler airflow test tool holddown gear comprising a tool mount body with a disc structure; the middle of the tool mount body is provided with a cavity used for mounting thetest tool; a seal pad is arranged in the cavity; the tool mount body is connected with a cylinder bearer through a plurality of poles; a cylinder is arranged on the cylinder bearer; a compact cavity is arranged between the plurality of poles, and arranged right above tool mount body cavity; a control circuit controlling the cylinder to open / close is provided, and comprises a compact switch controlling the cylinder to move downwards, and a first solenoid valve connected with the compact switch; the control circuit also comprises a loose switch used for controlling the cylinder to move upwards,and a second solenoid valve connected with the loose switch; the first and second solenoid valves are respectively connected with the air inlet of the cylinder through a cylinder current limiter; thedevice is reliable in sealing, can conveniently and fast clamp the test tool, and safe and reliable, thus preventing the experiment data inaccurate problems caused by gas leakage.

The invention belongs to the technical field of connectors and specifically relates to a waterproof terminal of a connector. A front end of a terminal body is connected with a contact arm, and the contact arm is of a conical structure defined by a plurality of strip-shaped bodies, wherein the diameter of the opening end of the conical structure is less than that of the bottom end of the conical structure, and a gap is reserved between every two adjacent strip-shaped bodies. The terminal body is provided with an annular groove used for installing a rubber mat, and the annular groove is providedwith an anti-skid structure to prevent the rubber mat from sliding. The terminal is low in cost and good in sealing performance.

The invention discloses a static power exchange thighbone intramedullary nail, which comprises a nail main body, wherein a coronal plane at the far end of the nail main body is provided with a first sliding lock hole and a third sliding lock hole; a vertical plane at the far end of the nail main body is provided with a second sliding lock hole and a fourth sliding lock hole; the first sliding lock hole, the second sliding lock hole, the third sliding lock hole and the fourth sliding lock hole are long holes; the end part of the long holes are circular-arc-shaped; the third sliding lock hole is longer than the first sliding lock hole; the fourth sliding lock hole is longer than the second sliding lock hole; the vertical plane at the far end of the nail main body is provided with a positioning platform; and the center of the positioning platform is provided with a third static lock hole. Due to the adoption of the static power exchange thighbone intramedullary nail disclosed by the invention, early static fixation of bones can be realized, motorization can be performed in case of delayed healing of bone fractures, static fixation is performed after motorization is performed appropriately, motorization can be performed once again, static fixation is performed after motorization is performed appropriately, and controllable adjustment is performed on dynamic and static fixation, so that rapid healing of bone fractures is facilitated.

The invention discloses progressive elevator safety tongs, and belongs to the field of elevator accessories. The progressive elevator safety tongs comprise a supporting frame, supporting plates, U-shaped plate springs, guide blocks, positioning pins and limiting blocks, wherein the supporting plates are positioned on the inner side of the supporting frame, the U-shaped plate springs are positionedin the supporting frame and correspond to the upper parts of the supporting plates, the guide blocks are symmetrically installed on the inner sides of the U-shaped plate springs, the positioning pinsare used for fixing the U-shaped plate springs and the guide blocks to the supporting frame, and the limiting blocks are used for limiting the movement of the U-shaped plate springs. The positioningpins sequentially penetrate through the supporting frame and the U-shaped plate springs and are fixedly connected with guide rails, first through holes and second through holes for the positioning pins to penetrate through are formed in the positions, corresponding to the positioning pins, of the supporting frame and the U-shaped plate springs respectively, and the diameters of the first through holes and the second through holes are at least larger than those of fixed pins; a jaw is formed in the supporting frame; and at least two fixed pins are arranged between the guide rails and the supporting frame. The elevator safety tongs are simple and stable in structure, the stability of the installation positions of the plate springs can be effectively kept, the deformation risk of the positioning pins is reduced, and the elevator safety tongs is safe to use.

A lockable goose head nail system used as an internally fixing transplant for treating the fracture of femur is composed of a goose head nail with front screw, anti-turn polygonal rod at its rear part and a pressurizing screwed hole at its tail, a slide locking nail, a steel plate with several pressurizing screwed holes and a sleeve tube for containing the anti-turn polygonal rod and slide locking nail in it, and a locking unit.

The invention discloses an easy-to-weld flip Mini / Micro-LED chip and a preparation method and a packaging method thereof. The chip comprises a substrate, a light-emitting structure arranged on the substrate, an electrode arranged on the light-emitting structure, and a welding layer arranged on the electrode. The Mini / Micro-LED chip disclosed by the invention is easy to weld and package, high in packaging efficiency, high in yield and low in cost.

Apparatus for coupling a mouthpiece to a container, comprising: a structure associated with a movable arm, a weld head abutting the container wall, and a feeder of the mouthpiece; the movable arm tilted about a swing axis, overlying the weld head Vertically upward; the support is connected with the movable arm and can slide along the translation direction transverse to the swing axis; the welding head is slidable in the welding direction transverse to the swing axis; the feeder has the function of connecting the container mouth part to the support the power head; a first motor mechanism connected to the structure and the movable arm so that the movable arm about the swing axis in a loaded position where the support faces the power head to receive the mouthpiece and the support is spaced from the welding head and translated relative to the The direction is aligned with the insertion position of the welding head; the second motor mechanism, connected to the support and the welding head, to actuate the simultaneous sliding of the support in the translation direction and the welding head in the welding direction, the container mouth part and the container The wall is squeezed between the welding head and the support at the welding position.

The invention relates to a distribution transformer based on glass fiber tape winding. The distribution transformer comprises a housing, a lead sleeve, an iron core, an iron core fastener, a high-voltage winding and a low-voltage winding, wherein multiple insulating strips are arranged between the high-voltage winding and the low-voltage winding, multiple bakelite rods are evenly arranged on the outer surface of the high-voltage winding, the bakelite rods are parallel to the central axis of the iron core, and the bakelite rods and the high-voltage winding are fixed together by winding a glass fiber tape. The surrounding of the connecting position of the iron core and the iron core fastener is tightly wound with a glass fiber tape. By arranging the glass fiber tape outside the high-voltage winding, the phenomenon that the performance of the distribution transformer is affected by winding expansion or contraction can be effectively avoided. By arranging the bakelite rods, deformation of the winding in the horizontal direction can be effectively inhibited, and by arranging the glass fiber tape at the connecting position of the iron core and the iron core fastener, rotary displacement of the iron core can be effectively avoided. The operating stability of the distribution transformer can be greatly improved, and the distribution transformer is simple in structure, high in practicability and convenient to popularize and use.

The present invention discloses a kind of connected two-in-one patch for strainless hernia repair. The patch of polypropylene includes large patch in hilt form and small patch in duck bill form, is in 0.4-0.6 mm thick, and has opened circular spermatic cord hole. The patch of the present invention has the synthesized features of Stoppa operation, Lichtenstien operation and Plug operation, including less shift, adjustable thickness, great area, deep setting position, etc.

The invention relates to a method for using a table tennis racket by a finger-disabled person and a racket structure form for the method. The racket structure form structurally comprises a table tennis racket formed by a racket (2) and a racket handle (1) which is positioned on the racket (2). The racket structure form is characterized in that an elastic disabled palm sheath (3) is arranged on the back surface of the racket (2) and a wrist ring-shaped elastic band (4) is arranged on the racket handle (1). The using method comprises the steps that the finger-disabled person is only required to stretch a residual disabled palm (P) into the elastic disabled palm sheath (3) to enable the disabled palm (P) to be in close contact with the back surface of the racket (2), then the wrist ring-shaped elastic band (4) which is positioned on the racket handle (1) and flatly loosened is wound and tied on a wrist (Q), and finally the finger-disabled person can control the action of the racket (2) jointly through the disabled palm (P) and the wrist (Q) at the upper part of the disabled palm (4) to participate in playing table tennis.