31results about How to "Large taper" patented technology

A centrifuge for separating blood components, and methods for controlling the centrifuge. The apparatus has a fluid separation chamber having a first frustro-conical segment and a second frustro-conical segment. The second segment has a taper such that particles are subjected to substantially equal and opposite centripetal and fluid flow forces. A camera observes fluid flow, and a controller controls the flow. White blood cells are selectively captured within the second segment and are periodically flushed out of the fluid separation chamber. The camera is used to determine the quantity of particles captured. A limited quantity of high density particles, such as red blood cells, may be captured within the first segment before capturing relatively low density particles, such as white blood cells, within the second segment.

The invention relates to a stepless speed-changing device, comprising an input cone pulley, an output cone pulley and a transmission chain of the input cone pulley and the output cone pulley, wherein the axis of the input cone pulley is parallel to that of the output cone pulley, and the orientation of the cone surface of the input cone pulley is opposite to that of the cone surface of the output cone pulley. The stepless speed-changing device is characterized in that a contact transmission unit on the transmission chain has a rotating freedom degree on the plane which is vertical to the self center point and surrounds the moving direction of the input cone pulley and the outer cone pulley, and can adapt to the change of the orientation of the conical surfaces so as to adjust the inclined direction automatically. The selection of the manufacturing materials of the contact transmission unit and the cone pulleys and the conical-degree sizes of the cone pulleys meet the self-locking condition for generating friction; and the static friction coefficient among the contact transmission unit and the cone pulleys is larger than the tangential value of the conical degree of the cone surface. The peripheries of the input cone pulley and the output cone pulley are provided with sliding grooves along the bus direction, and variable-diameter sliding blocks slide along the sliding grooves to change the working diameter, so that the stepless speed-changing transmission is realized.

A light emitting apparatus includes: a pixel circuit formed over a substrate; a partition including a plurality of openings formed over the substrate with the pixel circuit; and a plurality of pixels defined by the plurality of the openings, wherein the pixel includes a light emitting element including a lower electrode connected to the pixel circuit and an organic compound layer formed over the lower electrode, the plurality of the pixels is arranged in a line in a longitudinal direction of the substrate, the pixel circuit includes: a transistor including a gate electrode and source / drain electrodes; a first interconnection including the gate electrode; and a second interconnection including the source / drain electrodes, and the second interconnection and an interconnection formed of a same layer as the second interconnection are separated from the organic compound layer in planar view from a direction perpendicular to a main surface of the substrate.

The invention discloses a work roll for cold rolling edge drop control and a method for designing a roll contour of the work roll. The roll contour of the work roll comprises an oblique line section, a quadratic curve section and a horizontal line section. Two ends of a quadratic curve are respectively tangential to a horizontal line and an oblique line, the roll contour of an end of a side of the work roll is formed by the quadratic curve and the oblique line and participates in edge drop control, the quadratic curve section is short but is high in taper, and the oblique line section is long. The work roll and the method have the advantages that the edge drop control ability of integral edge regions can be guaranteed; regions of the edges of band steel are low in stress value, and accordingly the possibility of band breakage can be reduced; starting positions of the edges of the band steel are in smooth transition, so that stress concentration can be prevented, and the self-preservation property of the shape of the roll can be improved; the probability of band breakage due to deviation of the band steel and excessively high stress at the edges of each single side of the band steel can be reduced, and accordingly the work roll is excellent in deviation resistance; the roll contour is excellent in grinding performance, and the surface quality of the ends of the roll can be guaranteed in grinding procedures.

A mobile base anchoring device (MOBAD) is activated to infix a component projectile into a substrate as a method to affix the base onto the substrate.

The present invention relates to a method and apparatus for providing a flexible ladder for traversing a structure that addresses problems common with conventional rope ladders.

The invention discloses a micro-fine tapered electrode electric spark reverse copying device. The micro-fine tapered electrode spark reverse copying device comprises an electric spark reverse copyingelectrode, and further comprises a base. The spark reverse copying electrode comprises a first electrode body and a second electrode body, and the first electrode body and the second electrode body are correspondingly connected to the base through one ends of the first electrode body and the second electrode body and are mounted on the base. The first electrode body and the second electrode body are provided with inclined surfaces, the inclined surface on the first electrode body is in directly facing relation with the inclined surface on the second electrode body, and the two inclined surfaces are in a plane symmetry relation. A gap is formed between the two inclined surfaces as a reverse copying channel. The inclined direction of the inclined surfaces is inclined from the end, away fromthe base, of the first electrode body or the second electrode body to the end where the base is located, and the inclined surfaces are inclined relative to symmetry planes for forming the plane symmetry relation of the two inclined surfaces. The reverse copying device can be used for micro-fine tapered electrode machining, does not need expensive online detection equipment in the machining process, and meanwhile, the micro-fine tapered electrode spark reverse copying device is easy to operate during use.

A lid assembly, for a packing container, includes a lid ring of a plasticizable, thermoplastic polymer material and a dimensionally stable lid part, to be placed on the lid ring. The lid part (or the lid ring) has a layer of a peelable plastic material, on a side facing the lid ring (or the lid part), that contains a sealable, thermoplastic polymer or is coated with a cover layer of such a polymer. The lid ring (or the lid part) has an end face facing the lid part (or the lid ring), with two parallel circumferential projections, arranged at a distance of at most 3 mm and sealed to the peelable layer or to the cover layer of the lid part (or of the lid ring). A packing container with such a lid assembly as well as a method for manufacturing same by ultrasonic welding are also provided.

A male urinary device comprises a thin, light weight, stretchable, and elongated tube that has a diameter of 2-3 cm and is open at both ends. The tube would be rolled onto a wearer's urinary organ and then extended down out the bottom of the wearer's pant leg so that the device allows a male to urinate without removing their clothes. The length of the tube varies to accommodate individuals' height. Preferably, the tube is between 90 cm and 100 cm. The urinary device may be made from stretchable and resilient materials including but not limited to latex so that it is comfortable to wear.

The invention provides a femoral stem prosthesis. The femoral stem prosthesis comprises a stem body, a neck part and a conical head which are sequentially connected from the distal end to the proximalend and are in an integrated structure, wherein the stem body comprises a proximal end part and a distal end part; the proximal end part comprises a proximal end body and a functional part which connects the proximal end and the distal end of the proximal end body and is close to one side of the neck part; the proximal end body is connected to the distal end part; the size of the functional partis gradually increased from the distal end of the proximal end body to the proximal end of the proximal end body; and the cross section of the functional part connected to the proximal end body is ina pear shape or a gourd shape. The femoral stem prosthesis can well match with a narrow medullary cavity of a DDH patient, the neck part of the femoral stem prosthesis occupies a small space, the trauma to the femur is small, the femoral stem prosthesis is not easy to sink and rotate, few types of instruments are required during the operation, the operation is simple and convenient, the requirement on the operation skill of a orthopedist is low, and the femoral stem prosthesis is not only suitable for DDH patients, but also suitable for the total hip replacement of common patients.

The invention discloses a method and device for excimer laser processing tapered micropores. The device comprises an indicator light (1), an excimer laser (2), a mask exchange table (3), a mask (4), areflection mirror (5), a focused projection objective (6), a sample placement table (7), a three-dimensional electronically controlled table (8), a motor driver (9) and a computer (10). According tothe method and device, the taper of the micropores is enlarged by changing the size of the mask during the processing, the defects that the taper of fine taper holes is small and is difficult to control at present are overcome, and the purpose of obvious improving of the taper of the micropores is achieved; a gas laser such as the excimer laser is used as a laser light source to process the taperholes, because the gas photon energy is larger than the chemical bond energy among materials, chemical bonds of the materials can be directly broken to achieve cold processing, and the better surfaceprocessing quality is achieved; and the method and device have the advantages that the processing precision and reliability are high, the materials have a high absorption rate of light, and no heat affected zone exists.

The invention discloses a bristle-like chemical fiber filament brushing bristle. The bristle-like chemical fiber filament brushing bristle is composed of five kinds of chemical fiber filaments of thesame length; and the chemical fiber filaments are solid sharpened chemical fiber filaments, hollow sharpened chemical fiber filaments, corrugated chemical fiber filaments, triangular chemical fiber filaments, and cross chemical fiber filaments. The above chemical fiber filaments are mixed in a proportion and bundled into a bundle to constitute the bristle-like chemical fiber filament brushing bristle. The bristle-like chemical fiber filament brushing bristle disclosed by invention make full use of the synergistic effect among various chemical fiber filaments, thereby increasing the amount of paint absorbing and paint releasing of the bristles and saving costs; and meanwhile, when a painting process is performed on a workpiece by using a paint brush prepared by using the bristle-like chemical fiber filament brushing bristle, the paint layer on the surface of the workpiece is uniform, and the labor costs are reduced.

The invention discloses a preparation method of a low-temperature polycrystalline silicon array substrate, the array substrate and a display panel. An LS layer is reduced, a dielectric layer, apassivation layer and apixel electrode layer are simultaneously patternedby using a halftone photomask, a light resistor with a non-transparent area, a semi-transparent area, a full-transparent area and a full-transparent area is formed on the pixel electrode layer, the full-transparent area of 0.5 micron is arranged between the non-transparent area and the semi-transparent area, and the full-transparentarea is an area with the transmittance of 75%-90% and used for increasing the taper of the light resistor.

The invention discloses a chamfered crystallizer narrow-surface copper plate which comprises a main surface area and side surface chamfered areas, wherein one or more cooling water tanks which run through in an up-down manner are arranged on the main surface area, and a cooling mechanism is arranged at the back part of each side surface chamfered area. The cooling mechanisms are triangular structure holes consisting of a plurality of cooling holes, and the cooling holes adopt round structures. Under the action of the chamfers, steel billets can be better clung to the inner wall of a crystallizer in the molten steel solidification process, so that the casting blank quality can be ensured.

The invention provides a foundation combined pile reinforcing method, and belongs to the technical field of building construction methods. A pre-filling hole with the diameter larger than that of a shaped tube is punched in a designed position; a hole expanding auxiliary tool is inserted into the pre-filling hole; an explosion assembly is put from an opening in the upper end of the shaped tube, and the explosion assembly comprises a plurality of explosive packages which are connected in series so as to form a circle; a lead of the explosive package is ignited from the top of the shaped tube, and an expanding hole is formed in the bottom of the pre-filling hole; the shaped tube is rotated, the position of a radial sheet is adjusted, and then blasting is performed again according to the steps so as to increase the hole diameter of the expanding hole; and a reinforcement cage is placed in the pre-filling hole after the hole diameter of the expanding hole reaches the designed size, concrete is poured, the concrete is vibrated to fill the inner and outer sides of the expanding hole and the reinforcement cage, and ground piles which are used for connecting beam columns of a building foundation are formed after the concrete is dried and solidified. The foundation combined pile reinforcing method has the advantages of high strength, high stability and the like.

The invention discloses a threaded wellhead seal inspection pressure-test load determination method, a storage medium and equipment. The threaded wellhead seal inspection pressure-test load determination method comprises the steps that samples are selected and analyzed according to ultimate tolerance fit; a material mechanic model is established; internal pressures are loaded on an oil casing, a threaded inner wall and the end face of a shoulder, the sealed contact pressure and length under the different internal pressures in the loading and unloading processes are calculated correspondingly,and the sealed contact pressure and length are analyzed; the applicable criteria for leakproofness is determined, that is, on the basis that the triaxial design safety factor envolope curve of a down-hole string is less than 80%, the reducing amount is controlled to be within 20%; and the wellhead pressure-test load is determined according to the pipe body internal pressure bearing capacity demand. According to the threaded wellhead seal inspection pressure-test load determination method, useful guidance is provided for gas seal special thread connection in wellhead leakproofness detection pressure-test internal pressure load determination, and safe and reliable use in the underground is ensured.

Disclosed is an elevator for holding and end portion of a pipe in a drill tower. The elevator includes a hole from which, in operational use, an end portion of the pipe is suspended. The minimum diameter of the end portion of the pipe is selected larger than the minimum diameter of the hole, wherein sidewalls of the hole are shaped with a receiving surface for receiving correspondingly-shaped sidewalls of the end portion of the pipe. Similarly, sidewalls of the end portion of the pipe are shaped with an engagement surface for engagement with correspondingly-shaped sidewalls of the hole. Both the receiving surface and the engagement surface includes a first part and a second part neighbouring the first part, the first part defining a frustoconical shape having a first conicity, and the second part defining a shape having at least partially a second conicity lower than the first conicity.

To achieve the object of making available an insertion aid for a voice prosthesis, which insertion aid can be used universally and permits a secure hold on the voice prosthesis, such an insertion aid is proposed comprising a rod-shaped device with a head region arranged at a first end of a rod, said head region comprising a limit stop element for a voice prosthesis and, adjoining this limit stop element, a locking element for a voice prosthesis, wherein a first ring surface is formed between the limit stop element and the locking element, which ring surface is configured extending radially with respect to a longitudinal axis of the rod.

The invention discloses an intersecting-axis conical twin-screw rotor profile design method, a rotor and equipment. The rotor profile design method comprises the steps that a space external meshing model of the conical rotor is established; on a series of spherical surfaces of which the sphere centers are O and the radiuses are different, a molded line family required for forming a cone shape by the rotor 1 is given; according to a space meshing theory, solving a conjugate curve family of a given molded line family as a molded line family required by the rotor 2 to form a cone; the conical spiral lines required by the two rotors to form the conical screw rotor are solved; and scanning the molded line groups of the two rotors along respective conical spiral lines to obtain respective rotor curved surfaces. Compared with an existing parallel-axis conical rotor, the conicity of the generated intersecting-axis conical rotor is larger, the tooth space area between the rotors can be greatly reduced in the axial direction, therefore, the contact lines and leakage triangles of the double-screw rotor are greatly reduced, leakage of a double-screw machine can be effectively reduced theoretically, and the service life of the double-screw machine is prolonged. And meanwhile, the conical structure can improve the stress condition of the rotor.

The invention discloses a novel screw pump transmission shaft structure. The novel screw pump transmission shaft structure comprises a rotating sleeve in transmission connection with a rotor shaft, and a flexible shaft sleeve in transmission connection with a driving shaft; the rotating sleeve and the flexible shaft sleeve are arranged in a disalignment manner; a transmission shaft body is arranged between the rotating sleeve and the flexible shaft sleeve, and is an elastic transmission shaft; one end of the elastic transmission shaft is fixedly sleeved in the rotating sleeve; the other end of the elastic transmission shaft is fixedly sleeved in the flexible shaft sleeve; and at this time, the elastic transmission shaft is located in an elastic deformation state. The novel screw pump transmission shaft structure improves the working efficiency, can transfer higher axial load and torque, and effectively prolongs the service life of the transmission shaft.

The invention discloses a failed implant taking-out device, belongs to the technical field of dental implantation, aims to provide the failed implant taking-out device, and solves the problems that anexisting tool is low in broken implant taking-out efficiency and causes large wounds. The failed implant taking-out device comprises a first reverse screw tap, a second reverse screw tap, a third reverse screw tap and a torque wrench, wherein a first tap body part is arranged at the end of the first reverse screw tap, reverse teeth are arranged on the first tap body part, a second tap body part is arranged at the end of the second reverse screw tap, and reverse teeth are arranged on the second tap body part; and a third tap body part is arranged at the end of the third reverse screw tap, reverse teeth are arranged on the third tap body part, the taper of the second tap body part is larger than that of the third tap body part, and the taper of the second tap body part is smaller than thatof the first tap body part. The invention is suitable for the failed implant taking-out device.

Laser diode comprises an active layer; a waveguiding region at least partially surrounding the active layer; a rear facet; a front facet designed for decoupling laser radiation, wherein the active layer extends at least partially along a first axis (X) between the rear facet and the front facet; and a grid operatively connected to the waveguiding region, wherein the grid comprises a plurality of webs and trenches designed such that an average increase of a coupling parameter P for the plurality of trenches along the grid is non-zero, wherein the coupling parameter P of a trench is defined by the formula, wherein dres is a distance of the trench to the active layer, w is a width of the trench and Δn is the refractive index difference between a refractive index of the trench and a refractive index of a material surrounding the trench.

The invention discloses a tank body for a bulk cement tank car. The tank body comprises a fluidized bed device, a middle air inlet, drainage pipes, a lower tank plate, end air inlets, manhole devices,an upper tank plate, sealing heads, side plates, side columns, an end plate and the like and has the large-taper characteristic. The fluidized bed device with the large inclination is arranged at thebottom of the tank body, and the fluidized bed device, the side plates, the end plate, the sealing heads and the lower tank plate jointly form an interlayer type gas chamber structure; and air inletsin the two ends and an air inlet in the middle are correspondingly formed in the two ends of a cylinder body so that a gas chamber can communicate with an external compressed air source. According tothe tank body for the bulk cement tank car, the fluidized bed device with the larger inclination is arranged at the bottom of the tank body, the fluidized bed device, the side plates, the end plate,the sealing heads and the lower tank plate jointly form the interlayer type gas chamber structure, and the air inlets in the two ends and the air inlet in the middle are correspondingly formed in thetwo ends of the cylinder body so that the gas chamber can communicate with the external compressed air source, so that the problems that a traditional straight-cylinder-built-in interlayer type fluidized bed tank body is large in dead weight, high in center of gravity, low in unloading efficiency, low in volume utilization ratio and the like are solved.