39results about How to "Reduce the overall diameter" patented technology

In the catheter, the shaft includes a wire lumen; a sensor lumen that is arranged side by side with the wire lumen; a projection part that includes the wire lumen, projects to the more distal side than the distal end of the sensor lumen, and has a distal end opening communicated to the wire lumen at the distal end of the projection part; and a first notch that is a notch formed on the more proximal end side than the projection part, and is communicated to the wire lumen. The first notch is formed on a side surface of the shaft, the side surface being positioned on the opposite side of the sensor lumen with a center axis of the wire lumen as a reference, and the shaft includes, in a section with the first notch, a bottom portion facing the first notch and a pair of side walls extending to the opposite side of the sensor lumen.

A shoe-washing cylinder with high efficiency and cleanliness comprises a cylinder body, a pulsator is arranged at the bottom of the cylinder body, the pulsator is connected to a driving mechanism, a rotating seat is arranged on a movable sleeve of the pulsator, a plurality of shoe molds for fixing shoes are arranged on the rotating seat and are evenly distributed around the circumference, and the shoe molds are arranged horizontally, and a shoe-washing plate is arranged in the cylinder body, and the shoe-washing plate is arranged directly above the shoe molds, and a first bristle is arranged on the lower end surface of the shoe-washing plate. The shoe-washing machine fixes the shoe on the shoe mold by the arrangement of the shoe mold, so as to prevent the shoe from colliding with the pulsator, the cylinder wall and other parts during the cleaning process and damaging the parts or the shoe itself. And through the coordinated cleaning of the first to fifth bristles, the cleaning quality of the shoe can be guaranteed, and the all-round cleaning of the shoe can be guaranteed. At the same time, the horizontal design of the shoe mold is matched with the shoe-washing plate to ensure that the shoe is also in the horizontal direction, so that the shoe can be cleaned without a shoe-washing rod, which reduces the volume of the cylinder body and realizes the lightweight design of the shoe-washing machine.

The present invention relates to a conveyor roller assembly suitable for use in environments subject to significant temperature variations and an integrated end cap. The integrated end cap ensures efficient torque transfer to the ceramic coil thanks to its resilience resulting from the deformation of the end cap during its assembly onto the ceramic coil.

An antenna according to an embodiment of the present invention includes a primary radiator and a reflector mirror. The primary radiator radiates radio waves. The reflector mirror reflects radio waves radiated from the primary radiator, has same aperture diameter and height as a parabolic reflector mirror whose aperture diameter is equal to or less than 1.7 times a wavelength of the radio waves, and has a non-parabolic surface as a mirror surface shape.

The utility model relates to a power supply circuit for a remote control transmitting plate in a charging gun, which utilizes a bus of a charging cable to supply power to the remote control transmitting plate, thereby being capable of canceling the condition that a power supply cable is independently provided for the remote control transmitting plate from a charging pile, simplifying the structure of the charging cable, and reducing the cable diameter and the manufacturing cost of the charging cable.

The utility model discloses a novel heliostat stand column relates to tower type solar thermal power generation technical field, including the stand column body and the flange disc of setting at the top of stand column body, and the stand column body is the tubular structure of upper and lower port through and overall hollow, and the stand column body bottom part inserts the concrete, and the stand column body bottom part is located in the concrete and is provided with the opening section, and the opening section is uniformly distributed with a plurality of weight reduction holes for improving and the concrete bonding degree on the circumference array. The stand column body of the utility model adopts the circular thin -walled pipe structure design, reduces the stand column diameter and wall thickness, and the material and transportation cost are reduced significantly. The opening section is equipped with the circumferential distribution's strip or circular weight reduction hole, can improve the bonding degree of concrete and steel stand column, reaches the purpose that steel stand column and concrete integration works, effectively promotes the torsional and tensile capacity of stand column.

The invention relates to the technical field of vacuum standard leak holes, in particular to a vacuum standard leak hole which comprises an upper connecting piece, a lower connecting piece, a blocking piece, an upper indium ring, a lower indium ring and an indium block. Helium or other leakage indicating gas flowing in from the gas inlet flows out from the gas outlet after sequentially passing through the inner wall of the upper indium ring, the interior of the upper indium ring, the bottom face of the upper indium ring, the top end face of the indium block, the bottom end face of the indium block, the top face of the lower indium ring, the interior of the lower indium ring and the inner wall of the lower indium ring. On the whole, the upper indium ring, the indium block and the lower indium ring are used for constructing the trace permeation channel of the leakage indicating gas, compared with a mode that the leakage indicating gas directly permeates along the vertical direction of the plane where the permeable membrane is located, the trace permeation path is greatly prolonged, and meanwhile, part of the leakage indicating gas flowing into the permeation channel can be diffused into the atmosphere to be consumed.

The application provides a method for installing a berthing component, and belongs to the technical field of berthing component installation. The method uses a manual chain block to realize secondary lifting of the berthing component, thereby adjusting the height position of the berthing component and improving the position accuracy of the berthing component. Moreover, the manual chain block is used to directly lift the berthing component relative to hoisting equipment (a square barge crane), and the use of the manual chain block can ensure that the berthing component moves in the vertical direction and does not move in the horizontal direction. Meanwhile, since the manual chain block is used to lift the berthing component, the distance between the lifting point of the manual chain block and the berthing component is small, so the amplitude of the swing of the berthing component caused by the action of side wind is small, thereby facilitating the adjustment of the position of the berthing component and improving the use experience of the product.

A heater wire that allows for reduced costs by adopting a novel structure capable of preventing localized abnormal temperatures while having a high bending durability and accommodating diameter reduction. The heater wire (1) is provided with a heat-emitting part in which heat-emitting wires are wound in a spiral manner around a fiber core (2), and a sheath (7) arranged around the heat-emitting part. The heat-emitting wires are configured such that a first heat-emitting wire (4) comprising a first metal element wire (4a) and a second heat-emitting wire (5) comprising an insulating film (5b) provided around a second metal element wire (5a) are wound in an alternating manner.

Embodiments of a radially collapsible and expandable prosthetic heart valve (10) are disclosed. A valve frame (12) can have a tapered profile when mounted on a delivery shaft, with an inflow end portion having a smaller diameter than an outflow end portion. The valve can comprise generally V-shaped leaflets (40), reducing material within the inflow end of the frame. An outer skirt (18) can be secured to the outside of the inflow end portion of the frame, the outer skirt having longitudinal slack when the valve is expanded and lying flat against the frame when the valve is collapsed. A diagonally woven inner skirt (16) can elongate axially with the frame. Side tabs (116) of adjacent leaflets can extend through and be secured to window frame portions (30) of the frame to form commissures. The window frame portions can be depressed radially inward relative to surrounding frame portions when the valve is crimped onto a delivery shaft.

This application relates to the field of pile foundation technology, specifically providing an anti-tension pile and its construction method. The anti-tension pile includes: a pile body having an embedded section inserted into the ground and a side surface connected to the embedded section; an anti-tension mechanism disposed on the embedded section, the anti-tension mechanism including a plurality of anti-tension plates, all of which can extend and retract radially along the pile body; and a rotating shaft rotatably connected to the pile body, with one end of the rotating shaft connected to the anti-tension mechanism. The rotating shaft drives the anti-tension plates to extend and retract radially by rotating, so that the plurality of anti-tension plates extend or retract relative to the side surface. By rotating the rotating shaft, the anti-tension plates are driven to extend and retract radially. When the plurality of anti-tension plates extend relative to the side surface, the contact area between the anti-tension pile and the soil increases, thereby improving the bearing capacity of the anti-tension pile. This can reduce the length or diameter of the anti-tension pile while ensuring the bearing capacity, thus reducing costs. When the plurality of anti-tension plates retract relative to the side surface, the anti-tension pile is easier to pull out and retrieve.

A catheter assembly (10) comprising a catheter (18), a needle (12) having a sharp distal tip (13), and a catheter hub (14) connected to the catheter (18) having the needle (12) passing therethrough, the catheter hub (14) including a valve (19) having a preformed opening (22) that selectively permits or blocks a flow of fluid through the catheter (18), a first inner diameter (32) that closes the valve (19), and a second inner diameter (30) larger than the first inner diameter (32), the second inner diameter (30) opening the valve (19), wherein the valve (19) is in an open position upon axially compressing the valve (19) into engagement with the second inner diameter (30) of the catheter hub (14), and the valve (19) is in a closed position upon releasing the valve (19) to engage the first inner diameter (32) of the catheter hub (14).

The invention relates to the technical field of electronic-grade glass fiber cloth production, in particular to an ice water circulation device of a warping and sizing machine, which comprises a machine table, a driving motor, a transmission mechanism, an ice water yarn splitting rod, a water storage tank and a main water tank, and is characterized in that the driving motor, the transmission mechanism, the ice water yarn splitting rod and the water storage tank are arranged on the machine table; the water storage tank is communicated with the main water tank; the driving motor drives the ice-water yarn dividing rod to rotate through the transmission mechanism, and ice water flow circularly flows in the main water tank, the ice-water yarn dividing rod and the water storage tank through the pipeline pump. The ice water circulating device of the warping and sizing machine has the remarkable beneficial effects of improving the production efficiency and stability, optimizing the product quality, enhancing the equipment reliability, saving energy, reducing consumption, being easy to maintain and the like. Due to the advantages, the production capacity and the market competitiveness of enterprises are improved, and long-term economic benefits and social benefits are brought to the enterprises.

An object of the present invention is to provide a technique by which a lubrication retaining property (sliding durability) and flexibility can be exhibited even under severe situations. The present invention relates to a medical device including a base layer and a surface lubricating layer formed on at least a part of the base layer, in which the surface lubricating layer contains a polymer having a carboxy group, or a salt or an ester thereof, and a polyurethane, and the polyurethane has an elongation percentage of 700% or more and a Young's modulus of 5.0 N / mm2 or more.

A balloon expandable interventional valve stent having an inwardly-narrowed wing-spreading skirt (2), comprising a stent main body (1), leaflets and a wing-spreading skirt (2); the wing-spreading skirt (2) is arranged outside an outflow channel (4), and several round holes (8) are evenly arranged at the edge of the wing-spreading skirt (2) close to the outflow channel (4); a pulling suture (5) is connected to the wing-spreading skirt (2); when the balloon (7) is expanded and spread, the pulling suture (5) connected to the skirt on an inflow channel (3) side is gradually tightened in the circumferential direction under the effect of the expansion force of the balloon (7), so that the wing-spreading skirt (2) is folded in the axial direction of the stent to the outside of the inflow channel (3) to form portions protruding outwards in the radial direction of the stent main body (1), so as to cover or occlude a paravalvular leak. The wing-spreading skirt (2) structure that can be used is additionally provided while not increasing the diameter of a delivery system, greatly improving the effect of occlusion of a paravalvular leakage.

A compressor (20) includes a metal cylindrical body (22), a stator core (32), and a resin member (60) fixed to an outer peripheral surface of the stator core (32). An oxidized film (70) is provided on an inner peripheral surface of the body (22). The oxidized film (70) and the resin member (60) are joined to each other.

A linear motion guide device includes: a guide rail; a slider; and rolling elements. The slider is guided in a first axis direction by the guide rail. The rolling elements can roll in circulation passages. A circulation passage includes a rolling passage, a return passage, and a direction changing passage. The rolling passage is defined between the guide rail and the slider. The return passage is provided inside the slider. The direction changing passage connects the rolling passage with the return passage. The return passage includes a through hole and a return guide member. The through hole extends in the first axis direction inside the slider. The return guide member is disposed in the through hole. The return guide member has, in a predetermined plane orthogonal to a central axis of the through hole: an arc-shaped outer surface; an inner surface; a first end surface; and a second end surface. The outer surface faces a part of the inner peripheral surface of the through hole. At least a part of the inner surface is in contact with the rolling element. The first end surface connects one end of the outer surface with the inner surface in a peripheral direction of the central axis. The second end surface connects the other end of the outer surface with the inner surface, and is separated from the first end surface.

The present invention discloses a truss fixing mechanism on a bridge pier column, which is used to fix the truss on both sides of the bridge pier column, and is characterized in that the truss fixing mechanism includes a mounting hole opened on the truss, a horizontal reserved through hole on the bridge pier column, and a pin rod passing through the mounting hole and the horizontal reserved through hole, and the two ends of the pin rod are respectively sleeved with support sleeves to form a support with the inner wall surface of the mounting hole and the inner wall surface of the horizontal reserved through hole, and the support sleeve extends from the mounting hole to the inside of the horizontal reserved through hole. The advantages of the present invention are: the combined structure of the pin rod and the support sleeve is used between the truss and the bridge pier column, which can effectively fix the truss on the bridge pier column, and can minimize the diameter and weight of the pin rod while meeting the bearing capacity requirements, thereby reducing the difficulty of installation.

A balloon-expandable interventional valve stent provided with a foldable wingspan skirt (2), comprising a stent body (1), a valve leaflet, and a wingspan skirt (2). The wingspan skirt (2) is disposed on the outer side of an outflow tract (4); a pull suture (5) is connected to the wingspan skirt (2); when a balloon (7) is expanded and opened, the pull suture (5) connected to the skirt on the side of an inflow tract (3) is gradually tightened in a circumferential direction under the action of expanding force of the balloon (7), so that the wingspan skirt (2) is folded in the axis direction of the stent body (1), and a portion protruding outwards in the radial direction of the stent body (1) is formed, thus covering or plugging a paravalvular leak. A wingspan skirt (2) structure that can be utilized is added without increasing the diameter of a delivery system, thus greatly improving a plugging effect of the paravalvular leak.

The invention provides a near-bit measurement-while-drilling nipple structure for a coal mine and an assembling method of the near-bit measurement-while-drilling nipple structure. The near-bit measurement-while-drilling nipple structure comprises an outer pipe, an electronic bin framework, a wireless transmitting nipple, a battery assembly, a gamma measurement module, an inclination angle measurement module and a measurement circuit board. The electronic bin framework is fixed in the outer pipe, the battery assembly, the gamma module and the inclination angle module are annularly arranged, near-bit track and geological parameter measurement is achieved, and occupied space is reduced. One end of the wireless transmitting short section is connected with the outer pipe through straight threads, and the other end is connected to the screw motor through taper threads. The wireless transmitting short section transmits measurement data through wireless signals, and transmission of the measurement data across the screw motor is achieved. The intrinsic safety type circuit design ensures that the explosion-proof requirement of a coal mine is met. The assembling method comprises the steps of electronic element installation, wireless transmitting short section connection and transmitting antenna assembly and protection cover installation, and the shock resistance and the signal stability are improved through the vibration reduction sealing gasket and the sealing material. The device is compact in structure, the requirement for small-diameter drilling of a coal mine is met, and high-precision and real-time measurement and stable data transmission are achieved.

Embodiments of a radially collapsible and expandable prosthetic heart valve (10) are disclosed. A valve frame (12) can have a tapered profile when mounted on a delivery shaft, with an inflow end portion having a smaller diameter than an outflow end portion. The valve can comprise generally V-shaped leaflets (40), reducing material within the inflow end of the frame. An outer skirt (18) can be secured to the outside of the inflow end portion of the frame, the outer skirt having longitudinal slack when the valve is expanded and lying flat against the frame when the valve is collapsed. A diagonally woven inner skirt (16) can elongate axially with the frame. Side tabs (116) of adjacent leaflets can extend through and be secured to window frame portions (30) of the frame to form commissures. The window frame portions can be depressed radially inward relative to surrounding frame portions when the valve is crimped onto a delivery shaft.

A wide-angle lens which easily and appropriately corrects various aberrations such as field curvature, magnification chromatic aberration, and coma aberration, and easily achieves miniaturization of the entire wide-angle lens. The wide-angle lens of the present invention includes, in order from the object side, a first lens which is a negative lens with a concave image side lens surface, a second lens which is a negative lens with a concave image side lens surface, a third lens which is a positive lens with a convex image side lens surface, a fourth lens which is a positive lens with a convex image side lens surface, a fifth lens which is a positive lens, a sixth lens which is a negative lens, and a seventh lens which is a positive lens, and satisfies the following relationship when a focal length of the third lens is set as f3 and a focal length of the entire wide-angle lens is set as f: 3.000 < f3 / f < 12.500.

The invention discloses a photoacoustic capsule endoscope and an imaging method. The photoacoustic capsule endoscope comprises a light path folding assembly, an optical collimation focusing assembly, a miniaturized internal scanning assembly, a port connecting assembly and a multi-angle imaging probe. The multi-angle imaging probe can be rapidly and conveniently replaced through the port connecting assembly so as to adapt to different types of in-vivo cavities or cavity walls of esophagus, rectum, cervix uteri and the like. By designing the internal structure of the imaging probe and introducing a novel device, the device can achieve the miniaturized size with the diameter of 5 mm and the hard length of 15 mm, the requirement for in-vivo high-degree-of-freedom rapid lossless imaging is met, the detectable area and the imaging depth are enlarged, the influence of motion artifacts and image distortion is avoided, the clinical use cost is reduced, and the application prospect is wide. And multi-angle full-space endoscopic imaging is realized.

Embodiments of a radially collapsible and expandable prosthetic heart valve (10) are disclosed. A valve frame (12) can have a tapered profile when mounted on a delivery shaft, with an inflow end portion having a smaller diameter than an outflow end portion. The valve can comprise generally V-shaped leaflets (40), reducing material within the inflow end of the frame. An outer skirt (18) can be secured to the outside of the inflow end portion of the frame, the outer skirt having longitudinal slack when the valve is expanded and lying flat against the frame when the valve is collapsed. A diagonally woven inner skirt (16) can elongate axially with the frame. Side tabs (116) of adjacent leaflets can extend through and be secured to window frame portions (30) of the frame to form commissures. The window frame portions can be depressed radially inward relative to surrounding frame portions when the valve is crimped onto a delivery shaft.

The present application belongs to the field of catalytic conversion of crude oil, and particularly relates to a method for preparing olefins and aromatic hydrocarbons by catalytic cracking of crude oil, which realizes two-component separation of crude oil and heat coupling reaction of catalytic cracking; the crude oil is first separated into two components according to the true boiling point, the heavy component or the component with high true boiling point, i.e. the high-boiling liquid-phase component of the crude oil, is subjected to catalytic cracking in a first reactor, and the product gas separated from the catalyst is subjected to second-stage catalytic cracking in a second reactor with higher temperature; the light component or the component with low true boiling point, i.e. the gaseous stream of the crude oil, directly enters the second reactor for catalytic cracking in the gaseous phase; and the catalyst after the reaction of the second reactor is relayed into the first reactor to continue participating in the first-stage catalytic cracking of the first reactor, forming relayed use of the catalyst.

A method for producing a fiber mat includes a step of dispersing fine fibers in a dispersion medium (41) and a step of matting the dispersed fine fibers. The fine fibers have a fiber length smaller than a pore diameter of the papermaking wire (20). The matting step includes a step of papermaking the dispersed fine fibers on a microporous sheet (10) having a pore diameter smaller than that of the papermaking wire (20) and disposed on the papermaking wire (20) .

The invention provides a method for dispersing metal catalyst nanoparticles in growth of carbon nanotubes, and belongs to the field of preparation of carbon nanomaterials. The method is characterized by comprising the following steps: 1) cleaning a substrate, and removing surface pollutants and impurities; 2) spin-coating a layer of photoresist on the surface of the substrate, and drying; 3) depositing a layer of metal catalyst film on the surface of the substrate with the photoresist; 4) carrying out catalyst annealing treatment; and (5) introducing reaction gas, and growing the carbon nano tube. According to the method, the photoresist is used in the preorder growth stage of the carbon nanotubes, the agglomeration phenomenon of the metal catalyst film in the annealing stage can be effectively prevented by utilizing the material attribute that the photoresist can generate dehydration wrinkles at high temperature, and the method has the advantages of reducing the diameter and the wall number of the carbon nanotubes and increasing the density of the carbon nanotubes.

Disclosed in the present application are a capacitor module and a motor inverter. The capacitor module comprises: a capacitor support and a plurality of capacitors, wherein the plurality of capacitors are respectively connected to the capacitor support, and the plurality of capacitors are arranged in parallel in multiple rows; and the capacitor support comprises a base plate, a negative conductive plate, a partition and a positive conductive plate which are arranged in sequence in an overlapping manner, wherein a plurality of rows of through holes are formed in the base plate in parallel, positive pins and negative pins of the capacitors respectively penetrate the corresponding through holes to be connected to the corresponding positive conductive plate and the corresponding negative conductive plate in a welding manner, the positive conductive plate is bent towards side surfaces of a periphery of the capacitor module to form positive terminals, and the negative conductive plate is bent towards the side surfaces of the periphery of the capacitor module to form negative terminals. The capacitor module can improve the filtering effect of the motor inverter and reduce the size of the motor inverter. Correspondingly, also provided in the present application is a motor inverter.

The seamless steel pipe continuous mill comprises a first steel rolling assembly, a second steel rolling assembly is installed on one side of the first steel rolling assembly, the first steel rolling assembly comprises a single-groove roller, shaft columns are fixedly connected to the two sides of the single-groove roller, and transmission gears are fixedly connected to the outer walls of the shaft columns; the outer wall of the shaft column is rotationally connected with a first limiting sliding plate. According to the seamless steel tube continuous mill, when entering the continuous mill, a seamless steel tube is rolled for multiple times through the first steel rolling assembly, the second steel rolling assembly and the third steel rolling assembly, so that rolling passes are increased, the diameter and the wall thickness of the seamless steel tube are gradually reduced, and the seamless steel tube is prevented from being excessively pressed at a time; meanwhile, the first steel rolling assembly, the second steel rolling assembly and the third steel rolling assembly are driven by the hydraulic push rod to move left and right, the contact duration of rollers and seamless steel pipes is conveniently prolonged during rolling, the size precision and the surface smoothness are improved, and the seamless steel pipe machining quality of the seamless steel pipe continuous mill is guaranteed.

The invention discloses a self-compacting composite concrete waterproofing agent and its preparation and use method, the waterproofing agent is composed of 15-20 parts of paraffin, 2-3 parts of emulsifier, 15-25 parts of densifier, 10-15 parts of crystallizer, and 40-55 parts of water, and the densifier is composited by 15% polyvinyl alcohol aqueous solution, cellulose ether, and modified starch. The preparation method of the waterproofing agent is: paraffin is added to water in proportion and heated to completely melt; then an emulsifier is added in proportion to make the paraffin begin to emulsify, and stirred for 10 minutes-20 minutes; a densifier is added in proportion, heating is stopped, and stirring is continued until the system returns to room temperature; finally, a crystallizer is added in proportion and stirred until the system is uniform. The preparation method provided by the present invention is simple to operate, and the prepared waterproofing agent system is stable, and mixing in concrete can significantly increase the compactness of concrete, and the cracks generated in the later stage of concrete have the function of crystallization self-repairing, and paraffin can enhance the waterproof performance of concrete.