41results about How to "Clear passage" patented technology

An improved aperture arrangement in a device for defining a pattern on a target, for use in a particle-beam exposure apparatus, by being irradiated with a beam of electrically charged particles and allowing passage of the beam only through a plurality of apertures. The device includes an aperture array having a plurality of apertures of identical shape defining the shape and relative position of beamlets permeating the apertures. A blanking device switches off the passage of selected beamlets permeating the apertures and defined by them. The apertures are arranged on the aperture array according to an arrangement deviating from a regular arrangement by small deviations, adjusting for distortions caused by the particle-beam exposure apparatus, and the size of the apertures of the aperture array differs across the aperture array in order to allow for an adjustment of the current radiated on the target through the apertures and the corresponding openings.

A motor vehicle roof can fold from a position of use to a retracted position in a rear boot of the motor vehicle. The roof has a central element and a pair of lateral elements, each rotatably attached at one of two transverse edges of the central element. A mechanism connected between each lateral element and the central element cooperates with features carried on a chassis of the vehicle to cause the lateral elements to rotate into an inclined position respective the central element as the roof folds into the retracted position. The mechanism also causes the lateral elements to rotate as the roof moves into the position of use.

The invention relates to a screening, crushing or mixing bucket.

The invention discloses a coke oven ascending pipe cleaning interconnected control method and system, and belongs to the technical field of waste heat utilization. The coke oven ascending pipe cleaning interconnected control method comprises the step of recognizing closing of an ascending pipe cover, the step of recognizing closing of a water-sealed valve connected with an ascending pipe, the step of recognizing opening of a coal charging hole cover, the step of matching an ascending pipe address corresponding to a sensor, and the step of recognizing that the ascending pipe is located at the coking last stage corresponding to coke inside a coking chamber. According to the coke oven ascending pipe cleaning interconnected control system, the phenomenon that the inner wall of the ascending pipe is at high temperature for a long time at the coking last stage is avoided, graphite is cleaned away, the service life of an ascending pipe heat exchanger is prolonged, ascending pipe graphite is periodically cleaned away, and labor force is saved.

A toilet area for an aircraft cabin comprising an access door and housing a toilet bowl. The toilet area also comprises an evacuation exit, the access door occupying a closed position in the toilet area in a toilet configuration and a folded position in the toilet area in an evacuation configuration. Usage in particular in a flying wing aircraft is provided.

The invention discloses a preparation method of a beta molecular sieve. The preparation method comprises the steps of: 1. synthesis of initial gel: mixing a silicon source, an aluminum source, a template agent, an alkaline metal source, water and a beta molecular sieve seed crystal evenly to synthesize an initial gel, wherein the silicon source is calculated in terms of SiO2, the aluminum source is calculated in terms of Al2O3, the template agent is calculated in terms of TEA<+>, the alkaline metal source is calculated in terms of Na2O, and the raw materials for synthesizing the initial gel are in the following mole ratios that: SiO2/Al2O3=25-150:1, TEA<+>/SiO2=0.07-0.23:1, Na2O/SiO2=0.03-0.12:1, and H2O/SiO2=3.0-11.5:1, the beta molecular sieve seed crystal has a Si-Al ratio of SiO2/Al2O3=20-100:1, and in terms of mass, the adding amount is 0%-10% of the mass of SiO2; and 2. microwave heating crystallization reaction: conducting microwave heating treatment on the initial gel preparedby step 1, controlling the heating temperature at 120DEG C-180DEG C and the heating time at 4-25h, thus obtaining a beta molecular sieve product. The method provided by the invention can synthesize the beta molecular sieve with high crystallinity and abundant pore structures by only one step, and compared with the conventional hydrothermal synthesis method, the method provided by the invention cangreatly shorten the synthesis time of the beta molecular sieve, the grain size of the molecular sieve is smaller, and the pore channels are smoother.

A pitching machine includes a pedestal, a hopper, a guide channel connecting the hopper with a ball rack for guiding a ball in the hopper to the ball rack, and a ball hitting mechanism which includes a striking rod pivotally coupling with the pedestal, a resilient element for applying a pulling force against the striking rod to drive a lower end thereof towards the ball rack, and a striking rod drive mechanism. The striking rod drive mechanism drives the lower end of the striking rod backward, wherein when the striking rod is pivotally and backwardly moved at an utmost limit, the lower end of the striking rod is released, such that the lower end of the striking rod rapidly swings towards the ball rack for hitting the ball thereat. Therefore, the pitching machine is safe and easy to operate and brings convenience for batters.

The invention discloses a flue gas purification tower nozzle. The flue gas purification tower nozzle comprises a base (1) and a nozzle body (2) which is of a hollow structure and integrated with the base (1), the base (1) is provided with a hollow cavity (11), the hollow cavity (11) of the base (1) is communicated with a hollow cavity inside the nozzle body (2), spray heads (21) are arranged at two ends of the nozzle body (2) respectively, a taper angle of the taper inner wall of each spray head (21) is 90 degrees, and spraying areas form hollow taper spraying shapes, so that low-flow-rate nozzle outlet water quantity can reach liquid flowing section multiple times as large as those of general nozzles.

This invention relates to wood-based plate platen continuous thermal pressed plate structure and especially to the one with level thermal circuit and welding bonding, which comprises the thermal pressed plate, guide lever a, b, c, d, sealed plate, connector, connection lever, isolation plate and sealed plate. The multi-circuit level hole heating pressed plate ensures the heating quality under the condition of large bending radius and adopts column weld bonding to improves the thermal pate safety property, wherein, the level hole heating pressed plate is at the longitude direction by step to be same to the plate blank feeding direction.

The invention discloses an ash discharging gland. The ash discharging gland comprises a sealing pressing ring and a spring abutting part, a medium distribution channel is formed in the middle of the sealing pressing ring, one end of the sealing pressing ring is used for pressing a sealing part, the sealing pressing ring is fixedly connected with or integrally provided with the spring abutting part, the spring abutting part is used for being abutted with a pre-tightening spring, and an ash discharging opening is formed between the spring abutting part and the sealing pressing ring and communicates with the medium distribution channel and a medium accumulation area. The invention further discloses a valve seat structure comprising the ash discharging gland and a ball valve. According to theash discharging gland, the valve seat structure and the ball valve, medium accumulated between the ash discharging gland and the pre-tightening spring can be automatically discharged, the pre-tightening spring is prevented from losing efficacy due to accumulation of the medium, and the sealing performance between a valve seat and a valve element is guaranteed.

The invention relates to a secured device for locking and unlocking a plug on a frame with a wrench. The device has an obstructing component that is mobile with respect to a plug and can be brought from an obstructing position to an unobstructing position in which the wrench can engage a rotor of a bolt when an identification code of the wrench, read by a reader, is in agreement with the code stored in an electronic module that is associated with the plug.

A model railroad assembly incorporating a table, an arm having proximal and distal ends, first and second track matrices, the first and second track matrices having electrically positive rails and electrically negative rails, the first track matrix being positioned upon the upper surface of the table, and the second track matrix being positioned upon the arm's upper surface; a hinge connector operatively attaching the arm to the table, the hinge connector facilitating movement of the arm between first and second positions; and a plurality of pivoting electric switch contacts adapted for electrifying the second track matrix upon movement of the arm to the first position, and for de-electrifying the second track matrix upon movement of the arm toward the second position.

The invention discloses a preparation method of a beta molecular sieve. The method comprises the following steps: step 1, synthesizing initial gel: mixing a silicon source, an aluminum source, an alkaline metal source and water, and performing uniform stirring to synthesize the initial gel, wherein based on SiO2 of the silicon source, Al2O3 of the aluminum source, and Na2O of the alkaline metal source, molar ratios of raw materials for synthesizing the initial gel are as follows: SiO2/Al2O3=(30-150):1, Na2O/SiO2=(0.03-0.35):1, and H2O/SiO2=(3.0-50.0):1; step 2, performing microwave treatment on the initial gel: adding a beta molecular sieve seed crystal into the initial gel prepared in the step 1, wherein a ratio of silicon to aluminum in the seed crystal is as follows: SiO2/Al2O3=(20-100):1, and the adding amount is 3%-25% by mass of SiO2, performing uniform mixing, and performing microwave heating treatment to obtain crystallized precursor gel; and step 3, performing a crystallization reaction: performing a crystallization reaction on the crystallized precursor gel obtained in the step 2 by microwave heating to obtain the beta molecular sieve product, wherein the reaction temperature is 140-180 DEG C, and the reaction time is 4-20 h. According to the method provided by the invention, the molecular sieve obtained by the method has a smaller particle size, a rich pore structureand a relatively-smooth channel, thereby facilitating promoting catalytic cracking and isomerization.

The invention discloses a nitrogen and carbon dioxide mixed gas jet device in a horizontal well and an exploitation method, and relates to the technical field of energy exploitation, the nitrogen and carbon dioxide mixed gas jet device in the horizontal well comprises an offshore platform, a natural gas processing unit and a pressurizing unit, a gas injection horizontal well is arranged on a hydrate layer of a gas exploitation pipe, and a mixed gas jet unit and a nozzle assembly are arranged in the gas injection horizontal well; the mixed gas jet unit is used for mixing nitrogen and carbon dioxide and then dispersedly injecting the nitrogen and the carbon dioxide into a hydrate deposition layer of a hydrate layer through a nozzle assembly, and methane gas of the hydrate deposition layer is replaced by mixed gas of the nitrogen and the carbon dioxide; the gas production horizontal well is used for collecting methane gas and conveying the methane gas to the natural gas treatment unit. Gap injection of mixed gas can be achieved, smoothness of a replacement gas channel is guaranteed, and the efficiency of replacing methane with carbon dioxide is improved.

The invention relates to a preparation method of a nickel-cobalt-aluminum ternary positive electrode material precursor. The preparation method comprises the following steps: respectively preparing a nickel-cobalt binary solution, a sodium metaaluminate solution, a liquid alkali solution and a complexing agent solution, wherein the complexing agent is one or more of ammonium sulfite, ammonium bisulfite, ammonium sulfate, ammonium bisulfate, ammonium sulfide, ammonium hydrosulfide, diamine pentasulfide and ammonium thiosulfate; adding the base solution into the reaction kettle, introducing nitrogen, and controlling the temperature and the stirring rotating speed; adding the nickel-cobalt binary solution, the sodium metaaluminate solution, the liquid caustic soda solution and the complexing agent solution into a reaction kettle in a parallel flow manner for reaction; when the particle D50 generated by the reaction reaches 3.0-18.0 [mu]m, stopping feeding; performing aging, washing and impurity removal, dehydration, drying, batch mixing, screening and iron removal on the obtained material, and performing packaging to obtain a finished product. In the process of synthesizing the nickel-cobalt-aluminum ternary precursor, the variety and the adding amount of the added complexing agent are adjusted, and the problems that pores in the precursor are few and are irregularly distributed are solved.

Anchor fluke (1) having a hollow plate-shaped body adapted for attachment to a shank and/or anchor lines, with a longitudinal axis and a front penetration edge (3) and a rear trailing edge (4), which are located at a distance from one another in the direction of the longitudinal axis, wherein the fluke has a plane of symmetry that contains the longitudinal axis and is substantially perpendicular to the plate-shaped body. The hollow plate-shaped body has an upper surface (2a) with a centre of gravity and a lower surface (2b) which surfaces are bounded by the penetration edge, the trailing edge and lateral edges (5a, 5b) and wherein the body, at the lower surface, substantially between the edges, is provided with surfaces for counteracting a rolling movement about the longitudinal axis during penetration of the anchor fluke in an anchorage ground, and with vertical trailing edges (13a, 13b) for counteracting a yawing movement about an axis that is perpendicular to the longitudinal axis and is located in the plane of symmetry during the penetration in an anchorage ground.

An airway device facilitates the insertion of an ETT into a patient, the delivery of oxygenated air into a patient, an exchange of the pre-inserted ETT in an intubated patient, and an evaluation of the larynx and trachea in an intubated patient, The device comprises an overtube having a mask section attached to a distal portion of the overtube. An inflatable bladder affixed to the mask section includes a shape and surface configured to seamlessly contact the circumference of the elliptical construction of the laryngeal opening. Once the inflatable bladder is positioned adjacent the laryngeal opening enhanced sealing properties are created so that the axis of the airflow entering the device matches the axis of the trachea, allowing for the improved delivery of oxygenated air into the patient's lungs. The specific utilization of the bladder allows for the device to be constructed smaller than a typical airway device, which may more easily facilitate the insertion process. Additionally, the device may provide a seamless transition into endotracheal intubation when necessary.

The corn raw material distribution mechanism is characterized in that a transparent material box and a material box base are embedded into a whole to form a material box assembly, the material box base is provided with a material box pull switch which can be used for closing a raw material outlet when the material box is taken out, the material box outlet is inserted into an inlet of an outer cavity base for feeding, and the outer cavity base is provided with an inner cavity. And an elastic plate is inserted into an open groove below the feeding hole of the cavity and is self-locked. The inner cavity is composed of a sliding piece and an adjusting plate. And the outer cavity seat is fixed on the bottom surface of the stainless steel mounting plate through bolts. The connecting transmission system is composed of a pin shaft, a plastic connecting rod, a crank turning wheel and a gear motor. A discharging hopper of the distribution mechanism is inserted into a reserved hole in a bottom plate of a vending machine material chamber and connected with a boiler feeding port, lugs on the two sides of an installation plate are inserted into buckles of the bottom plate of the vending machine material chamber, and the other ends of the lugs are fixed through round screws. The device is small in size, light, economical, practical and convenient to install and use.