158results about How to "Small radius of curvature" patented technology

A blade is repaired by utilizing a super abrasive machining quill and / or wheel to form the contour and restore the height of the blade. By utilizing super abrasive machining, the contour and height can be quickly returned to desired dimensions by removing unwanted added material.

The invention discloses a preparation method for a flexible display substrate, relates to the technical field of the flexible display substrate, and solves the problem that a device on the flexible display substrate is damaged in peeling off the flexible display substrate and a rigid bearing substrate and the problem of relatively large radius of curvature of the flexible display substrate and the like. The preparation method comprises the steps of forming a concave-convex pattern layer on the rigid bearing substrate; preparing the flexible display substrate on the rigid bearing substrate where the concave-convex pattern layer is formed, wherein the flexible display substrate comprises a display device; the pattern in the concave-convex pattern layer avoids the display device; and peeling off the flexible display substrate and the rigid bearing substrate to obtain the flexible display substrate. The preparation method provided by the invention is used for preparing the flexible display substrate.

The invention relates to a milling tool for machining non-metallic materials, in particular wood, wood-based materials and plastics, which has a carrier (3) into which a corresponding number of tools can be inserted in the radial direction on the circumferential side A plurality of cutting elements (1) in an extended recess (2), which can be screwed to the carrier (3) via holes (15), said cutting elements being plate-shaped and in cross-section Basically triangular in shape and provided with a cutting edge (11) on one side edge, it is characterized in that the cutting element (1) has the following features: a) the area (12) opposite the cutting edge (11) is inverted circle, b) a groove (14) is provided in the underside (13) extending substantially at right angles to the cutting edge (11), c) the hole (15) divides the groove (14) preferably into two regions , is also characterized by the following feature of the hollow slot (2): d) extends upwards in the radial direction from the bottom (21) of the hollow slot serving as a support surface for the cutting element (1) tab (22), which is associated with the groove (14), e) a radial threaded hole (23), which preferably divides the tab (22) into two regions , and f) the cutting element (1) is only characterized by its underside (13), the side wall (17 or 18) of the groove (14) and the A part of the area (12) is in contact with said cavity (2).

An optical isolator is constituted by providing a substrate, a waveguiding layer lattice-matched to the substrate, and a non-reciprocal phase shifter, and a waveguide and a curved waveguide for guiding the waveguiding layer are formed in the waveguiding layer, and a branch coupler is also provided therein, furthermore, a refractive index of the waveguiding layer is made larger than 3.36 by changing a semiconductor composition.

A navigation guide wire (1 ) through an anatomical apparatus, for example a vascular system, unusually capable of being safely positioned proximate to bifurcations, comprises: - an elongated body (19) having a proximal end (21 ), a distal end (20), and a longitudinal extension along an axis (x-x) extending at least from said proximal end to said distal end; - at least one first proximal portion (4) having a predetermined first flexural rigidity (KfI ) capable of a first predetermined flexure in at least one plane comprising at least one portion of said longitudinal axis in order to allow a first curvature to said proximal portion when bending stressed, while ensuring a predetermined elastic return in a rectilinear position of the elongated body proximal portion when not subjected to stresses; - at least one second distal portion (3) having a predetermined second flexural rigidity (Kf2), the amount of which is equal to or higher than said first flexural rigidity of said at least one first proximal portion, capable of a predetermined flexibility of said second distal portion in order to obtain a second curvature when bending stressed in at least one plane comprising at least one portion of said longitudinal axis, while ensuring an elastic return to a rectilinear position of said distal portion of said elongated body when not subjected to stress; - at least one intermediate length (6), arranged between said first proximal portion and said second distal portion, having a third flexural rigidity (Kf3) essentially lower than said first flexural rigidity (KfI ) and said second flexural rigidity (Kf2), which allows a predetermined flexibility capable of a third curvature substantially more pronounced compared to said first curvature and second curvature, so as to allow a considerable direction change between said first proximal portion (4) and said second distal portion (3).

The invention relates to a reinforced stratospheric airship internally provided with a keel. The reinforced stratospheric airship internally provided with a keel is mainly composed of the rigid truss support keel, an airship bag body, a solar cell module, an energy storage battery, a power propulsion system and an avionics system, wherein the airship bag body is formed by bump-type skin; a plurality of strip-shaped bumps are arranged on the bump-type skin; each strip-shaped bump is arranged in the length direction of the stratospheric airship; and the strip-shaped bumps are arranged along the outer circumference of the airship. According to the reinforced stratospheric airship internally provided with the keel,, the radius of curvature of the skin can be reduced, and a stress load, caused by pressure, of the skin of the airship can be reduced greatly so that the skin can withstand the overpressure state for a long time, and increment of the size of the airship is possible.

The invention relates to a dihydrate azithromycin sphaerocrystal and a preparation method thereof. The sphaerocrystal is high in circular degree and large in particle size, has the diameter reaching to 0.5mm to 4mm, is good in fluidity, and has an angle of repose being 17 degrees to 23 degrees. The method comprises the steps of adding azithromycin solids into a mixed solvent of a good solvent anda bridging agent, then heating to 20 DEG C to 40 DEG C, fully dissolving the solids, adding water for crystallizing under the stirring action, after adding water, growing the grain for 30 to 90min atconstant temperature, then filtering a crystal mush, vacuum drying a filter cake at 50 to 60 DEG C to constant weight to obtain the dihydrate azithromycin sphaerocrystal. The particle size of the product is uniform, the particle size can reach 0.5 to 4mm, the angle of repose is 17 degrees to 23 degrees, and the fluidity is good. The dihydrate azithromycin sphaerocrystal provided by the invention is simple in process flow, has low requirement on equipment, is large in product particle size, high in purity and good in fluidity, can be directly used for tableting, and is easy to realize industrial production.

The present invention relates to a manufacturing method for a thin-walled stainless steel pipe fitting with a bending part, and is used for the production of the thin-walled stainless steel pipe fittings such as elbows and overhead pieces, etc. The pipe fitting is divided into a socket part (1) of two ends connected with a tube and a central bending part (2). The socket part (1) is produced by adopting the pressure-expansion forming of the thin-walled stainless steel pipe fitting. The bending part (2) is produced by adopting precision casting technique of stainless steel. The socket part (1) and the bending part (2) are combined and welded into a whole by welding, thereby reducing the dimensions of the pipe fittings and having low cost and beautiful appearance.

One embodiment of the present invention provides an ultrasonic probe for otolaryngology, comprising: a handle part enabled to be grasped by the hand of a user; a lens part inserted into the oral cavity to make contact with the skin therein and having a fixed curvature radius; a head part including the lens part on one side thereof and having rounded edges; and a connection part for connecting the head part and the handle part and forming a first angle with the head part.

A square lithium secondary battery includes a wound body in which a collective sheet in which a positive electrode sheet and a negative electrode sheet overlap each other with a first separator interposed therebetween is wound while a second separator is put inside the collective sheet. An active material mixture layer on one or both surfaces of at least one of the positive electrode sheet and the negative electrode sheet includes a region with a plurality of openings and a region with no opening. At least a bent portion of the collective sheet is covered with the region with the plurality of openings.

A network cable skin strength-bearing material relates to skin strength-bearing materials and solves the problems that the skin strength-bearing materials used by the existing air-inflating structure including a stratospheric airship are large in weight and low in bearing capacity, the inner portion of the materials cannot bear high pressure, the shape can not be controlled easily and the like. The network cable skin strength-bearing material comprises a membrane layer, a network cable layer and an adhesive tape layer, wherein the network cable layer is one of six weaving structures weaved by fiber tows. The network cable skin strength-bearing material has the advantages of being light, large in rigidity, strong in bearing strength and capable of bearing larger effective loading, and the equivalent elastic modulus of the material is larger than that of a film with the same thickness. As a soft composite material, the material can meet high configuration requirements of aircrafts and can be conducted with efficient folding without losing mechanical property. The network cable skin strength-bearing material can be used in the field of aerospace and the like and is particularly suitable for outer surfaces of aviation spacecrafts with large dimension.

The invention provides an N type silicon on insulator (SOI) transverse insulated gate bipolar device which comprises an N type substrate. A buried oxide is provided on the N type substrate. An N type epitaxial layer is provided on the buried oxide. The N type epitaxial layer is provided with an N type buffer well and a P type body region inside. The N type buffer well is provided with a P type positive area inside. The P type positive area is provided with an N type positive area and a P type body contact area inside. A surface of the N type epitaxial layer is provided with a gate oxide layer and a field oxide layer in a certain scope. An upper surface of the gate oxide layer is provided with a polysilicon gate. A surface of the device is provided with a passivation layer and a metal level in a certain scope. The device is characterized in that: the N type epitaxial layer is provided with a P type well area, the P type well area and the P type body region form steeped P type doping, dosage concentration of the P type well area is lower than dosage concentration of the P type body area, one side of the P type well area is tangent to the field oxide layer, and the other side of the P type well area presses against the P type body area. According to the above structure, electric field intensity and impact ionization rate of a beak position can be substantially reduced, thus an output characteristic is effectively improved.