93results about How to "Increase the effective thickness" patented technology

This invention refers to the traction lugs of reinforced elastomeric endless traction bands, and more particularly to those which are used on heavy vehicles like defense vehicles or for skid steer vehicles. More specifically, the invention relates to traction lugs which are angled with respect to the transversal axis of the traction band and preferably disposed in chevrons, which optimize the band's traction while reducing the occurrences of teeth skipping and the level of vibrations and noise induced by the interaction of the traction band with the sprocket.

The invention relates to a wide band one-layer microstrip patch antenna, which solves the problem of narrow impedance width in the currently common microstrip antenna. The microstrip patch of the antenna is a one-layer microstrip patch; one end of a stair-stepping coplane microstrip line with two widths is inserted in the patch antenna by the open slot on a convex microstrip patch, and the other end of a feeding microstrip line is positioned at the edge of a microstrip dielectric-slab; a concave metal carinal cavity is arranged at the back surface of the microstrip dielectric-slab excluding the position corresponding to the microstrip patch and in the middle of structural mounting plate. The wide band one-layer microstrip patch antenna can form a large microstrip patch antenna array easily, which is in favor of impedance matching of the antenna, the subnetwork design for microstrip work, the weight reduction of the antenna and the bandwidth widening of the antenna; the wide band one-layer microstrip patch antenna of the invention has the advantages of simple and compact structure and small cross section, which improves the telecommunication performance and reduces the whole weightof the antenna array.

The ESR of a solid electrolytic capacitor can be decreased by using more than one anode lead or by using an anode lead with a cross-section which is oval or rectangular so as to increase contact area between anode lead and anode compact and reduce the resistance of the lead. The preferred anode is Ta and the preferred wire is Ta.

The invention discloses a multilayer grating bearing cylinder and a preparation method thereof. The multilayer grating bearing cylinder is formed by nesting at least two single-layer grating cylinders, and the densities of the meshes of the adjacent single-layer grating cylinders are different. The preparation method for the multilayer grating bearing cylinder made from a composite material comprises the following steps: producing a wood pattern for casting a soft mode, producing a silicon rubber soft mode, assembling a mould, winding the soft mode in an assistance manner, carrying out vacuum bag moulding, demoulding and carrying out after-treatment, and integrally moulding the multilayer grating bearing cylinder; or preparing the single-layer grating cylinders according to the steps, and then assembling the single-layer grating cylinders into the multilayer grating bearing cylinder. The preparation method for the multilayer grating bearing cylinder made from metal or engineering plastic comprises the following steps: preparing a casting mould for the disassembly components of the single-layer grating cylinders, melting and casting, welding, and then assembling the single-layer grating cylinders into the multilayer grating bearing cylinder; or moulding in one step by a 3D printing technology. The multilayer grating bearing cylinder has the characteristics of good structural stability, light mass, high mechanical properties, difficulty of structural overall buckling instability, simple and practicable preparation method, and low cost.

The invention relates to an air cleaner and an expandable frame for use with a conventional household air conditioning system with a return duct having an opening sized to receive a standard panel filter. The expandable air cleaner frame comprises a peripheral frame sized to be received within the opening in the return duct and a carrier coupled to the peripheral frame. The carrier supports an air conditioning element, such as a field charger or an electrostatic precipitator. The expandable air cleaner frame is movable between a collapsed position, wherein the effective thickness thereof is less than the opening, and an expanded position, wherein the effective thickness thereof is greater than the opening.

The invention belongs to the technical field of metal material surface processing and relates to a production method for a ship fastener complex coating. A zinc impregnation coating, a zinc-aluminum coating and an epoxy coating are arranged on the fastener surface from internal to external and zinc impregnation, washing, zinc-aluminum coating liquid dip-coating, zinc-aluminum coating solidification, epoxy coating liquid dip-coating and epoxy coating solidification are performed on the faster after sequentially being performed on oil removing and rust removing to form into a protective layer. The production method for the ship fastener complex coating has the advantages of being simple in production technology and reasonable in principle. The complex coating has the advantages of being good in corrosion resistance, being capable of effectively solving the problem that the faster is corroded in the seawater environment and being environmentally friendly.

The invention discloses an III-nitride semiconductor device and a manufacturing method for the same. The III-nitride semiconductor device comprises a nitride semiconductor layer, a passivation layer, a source, a drain and a gate, wherein the nitride semiconductor layer and the passivation layer are grown on a substrate; the gate is positioned between the source and the drain; the nitride semiconductor layer comprises a nitride nucleating layer, a nitride buffer layer, a nitride trench layer and a nitride potential barrier layer; the passivation layer is etched in a gate area until the nitride potential barrier layer is exposed, and a groove is formed in the gate. According to the device and the method, a combined structure of a composite dielectric layer is adopted between the nitride potential barrier layer and a gate metal layer, and the composite dielectric layer comprises a nitride dielectric layer, an oxynitride dielectric layer and an oxide dielectric layer, which are sequentially formed from the substrate, so that the increase of interface state density is avoided; compared with a conventional III-nitride semiconductor device with a single oxide dielectric layer, the III-nitride semiconductor device with the composite dielectric layer has the advantage that the electric leakage and current collapse effects of the semiconductor device can be simultaneously reduced.

The invention relates to a centrally symmetric silicon carbide (SiC) single crystal growing device. The growing device comprises a graphite crucible with a cover, wherein the bottom of the graphite crucible is connected with a rotating system which rotates the graphite crucible; the rotating system comprises a rotating tray, a center rotating rod and a driving device which drives the center rotating rod to move actively; the driving device is in sealing connection with a vacuum growth cavity by a tee connector; the center rotating rod passes through the tee connector to be connected with the driving device. According to the growing device disclosed by the invention, the bottom of the graphite crucible is connected with the rotating system which rotates the graphite crucible, when the rotating system is used, the rotation speed of the center rotating rod is 1 to 60 revolutions per minute; a non-centrosymmetric thermal field caused by spiral induction coils and thermal insulation is avoided; a centrosymmetric thermal field is constructed, and the transmission of substances is in central axial symmetry, so that the obtained crystal is centrally symmetric; the thicknesses of all edges are identical, and the use ratio of crystal materials is improved.

A liquid separating device (1) for processing a mixture material (3) containing both solid and liquid materials (3a,3b), in order to separate liquid material (3b) from the solid material (3a), the liquid separating device (1) includes a support frame (5), a series of liquid separation assemblies (7a,7b) and a corresponding guiding assembly (19) between each pair of liquid separation assemblies (7). The liquid separation assemblies (7) are disposed about the support frame (5) in a cascading configuration, and the passage (13) of each liquid separation assembly (7) is narrower in width than the passage of a preceding liquid separation assembly (7) so that each subsequent liquid separation assembly (7b) is enabled to extract more liquid material via an increased wringing pressure resulting from a thickening of the remaining mixture material (3) to be processed and the narrower subsequent passage (13b) through which it is channeled and pressed.

The invention relates to a welding process of a boss of a hydrogenation reactor. A port in one end of a cylindrical shell section is processed flatly after coiling, circle checking and flaw detection of the cylindrical shell section are qualified; and then a surfacing position of the boss is marked, and thus the trouble that a cylinder body is firstly leveled and then overturned for surfacing the boss when the boss is surfaced is avoided, the leveling procedure during processing of the boss is avoided, therefore the production time is saved, the levelness of the boss is ensured, and the purpose of ensuring the welding quality of the boss is achieved.

The invention discloses a multithread equal-thickness deep mixing drill which belongs to the technology field of engineering drill. It is composed of more than two groups of upper and lower drill rocker parallel setting on the retainer. The retainer contains a wall cutter which contains a case hinging the retainer. A hollow turboshaft is coaxial fixed corresponding to the lower drill rocker on the case passing through it. A turbine is packaged outside the turboshaft. The worm meshing the turbine is set on its one or two sides. The worm shaft supports on the case against to the lower drill rocker and its two ends extending out of the case are equipped with wall cutting-tool. The longitudinal projection of the cutting-tool locates on the public chord extension line of the external turning trace of the two adjacent twist drills. The wall cutting-tool rotates to cut the border with the smallest separation between the adjacent round digging pores. The thicknesses of the digging pores are unified to get the equal-thickness underground serial wall. With the fewer materials and the greater strength, it is applied for the supporting water-seal of the foundation ditch and the levee antiseep.

The invention discloses a method for molding micro-profiled composite joint strips. The method is characterized by comprising the following steps: performing wire drawing or roller drawing on square composite wires for pre-forming the needed double-peak appearance wires; and performing final forming on the pre-formed composite wires through a precision-rolling mill with a welding rib limited concave-convex molding roller, thereby obtaining the needed product with a special profile shape. The stress point of the composite strip in the rolling process is changed in a manner of pre-forming the double-peak appearance, so that the interface of the micro-profiled composite wire can be straightened, the precious metal cladding phenomenon is reduced, the utilization rate of precious metals is greatly improved, and the needed micro-profiled composite product is easily formed; and moreover, rolling forming is performed by utilizing the welding rib limited roller, the welding rib position does not need to be adjusted in the production process, the process wastes can be reduced, the production efficiency is improved, and the production cost of the whole product is reduced.

An IGFET with a silicide contact on an ultra-thin gate is disclosed. A method of forming the IGFET includes forming a gate over a semiconductor substrate, forming a source and a drain in the substrate, depositing a contact material over the gate, and reacting the contact material with the gate to form a silicide contact on the gate and consume at least one-half of the gate. By consuming such a large amount of the gate, a relatively thin gate can be converted into an ultra-thin gate with a thickness on the order of 100 to 200 angstroms. Preferably, the bottom surface of the gate is essentially undoped before reacting the contact material with the gate, and reacting the contact material with the gate pushes a peak concentration of a dopant in the gate towards the substrate so that a heavy concentration of the dopant is pushed to the bottom surface of the gate without being pushed into the substrate. As exemplary materials, the contact material is a refractory metal such as titanium, the gate is polysilicon, and the dopant is arsenic.

Improved microwave imaging using a reflector. By providing a reflective surface in the range of the imaging system, additional information is available for imaging objects. The relative surface provides silhouette information on the object, and increases the effective thickness of the object to aid analysis.

The invention discloses a splint inserted type coupler tail frame of forging steel, which is additionally provided with a forging steel splint based on a forging steel frame body provided with an upper pin hole and a lower pin hole; the two sides of the lower pin hole of the forging steel frame body are respectively provided with an L-shaped slideway; the two sides of the forging steel splint are respectively provided with a reversed L-shaped slide strip corresponding to the L-shaped slideway; the forging steel splint inserts a seal cover at the position of the lower pin hole of the forging steel frame body by the reversed L-shaped slide strip and the L-shaped slideway. The forging steel frame body includes a U-shaped forging steel framework and two side forging steel plates; the two side forging steel plates are respectively welded on the two sides at the front end of the U-shaped forging steel framework; the two L-shaped slideways are simultaneously forged and shaped with the U-shaped forging steel framework or welded on the lower frame plates at two sides of the lower pin hole; a locating mechanism is arranged between the forging steel splint and the forging steel frame body. A lug boss with an incline plane is arranged on the forging steel splint. The splint inserted coupler type tail frame of the forging steel has the advantages of reasonable design, high mechanical intensity, convenient loading and unloading, being capable of effectively preventing the coupler tail pin from falling off, higher framework intensity, etc. The splint inserted type coupler tail frame of the forging steel is applicable to be used in traction buffer device of a delivery truck, in particular to a delivery truck of 60tons.