35results about How to "Reduced pumping effect" patented technology

A magnetic tunneling junction device and fabrication method is disclosed. In a particular embodiment, the method includes depositing a capping material on a free layer of a magnetic tunneling junction structure to form the capping layer and oxidizing a portion of the capping material to form a layer of oxidized material.

Systems and methods for pumping fluid comprising a pumping chamber, a pump inlet, a pump outlet, a valving mechanism, and a drive piston or pumping chamber wall including a deformable surface configured to provide elastohydrodynamic lubrication during operation.

A cylindrical pump baffle fitted to a semiconductor processing chamber is disclosed. The pump baffle contains a screen with bores therethrough to allow process gasses from the process chamber to be exhausted from the chamber at a reduced rate. This decreases process discrepancies to the wafer due to the prejudice of gas concentration as a result of the pressure differential imposed upon the gas and thereby the wafer brought about by the rapid and relatively unimpeded exit flow of process gasses when no restrictive member is in place. The pump baffle is also machined such that it does not block the placement and removal of wafers by the platform robot arm.

A spin transfer torque magnetic random access memory (STTMRAM) magnetic tunnel junction (MTJ) stack includes layers to which when electric current is applied cause switching of the direction of magnetization of at least one of the layer. The STTMRAM MTJ stack includes a reference layer (RL) with a direction of magnetization that is fixed upon manufacturing of the STTMRAM MTJ stack, a junction layer (JL) formed on top of the RL, a free layer (FL) formed on top of the JL. The FL has a direction of magnetization that is switchable relative to that of the RL upon the flow of electric current through the spin transfer torque magnetic random access memory (STTMRAM) magnetic tunnel junction (MTJ) stack. The STTMRAM MTJ stack further includes a spin confinement layer (SCL) formed on top of the FL, the SCL made of ruthenium.

An improved oil seal is provided for sealing passage of a rotatable shaft through an end wall of a bearing housing in a turbomachine or the like, wherein the shaft is rotatably supported within the bearing housing by oil-lubricated bearings. The improved oil seal comprises a dynamic oil-air separator and a slinger rotor mounted on the shaft for rotation therewith, the slinger rotor having an outwardly extending slinger ring with an outboard seal face with radially oriented slots and a circumferential groove or grooves.

The present invention relates to a system for forming a product from a food mass, the system comprising a mould member, e.g. a mould drum with an axis of rotation and a feed pump.

A recyclable hydraulic production packer is provided with bi-directional slips, can be used for setting at stretching, retracting or neutral states, and also can bear pressure differences form above and below. With the design of large bypass openings inside the packer, swabbing effects during lowering and retracting can be reduced, and the large bypass openings are automatically closed during setting. When the packer is unset, the bypass openings are first opened, up-down pressure is balanced, when the packer bears a lower pressure, a compensation piston can further ensure that an upper slip bits tightly, the setting is reliable, and resistance during retraction of tools can be reduced through an upper slip release device of the packer. The packer provided by the present invention is characterized by being excellent in pressure bearing capability, capable of setting in various working conditions, and recyclable.

The invention discloses an automobile seat sliding rail lubrication grease. The lubrication grease is prepared from the following components in percentage by weight: 52%-65% of base oil, 26%-33% of sulfonate, 6%-10% of a structure improving agent and 3%-5% of a thickening agent. The lubrication grease adopts food-grade base oil, is free of smell, free of damage to human body and excellent in high-and-low temperature performance, and can meet the application of an automobile seat sliding rail in extreme environment; the high-alkali synthetic calcium sulphonate has excellent extreme-pressure antiwear property and is free of damage to human body; the effects of resisting wearing, reducing friction and reducing noise can be achieved by not adding high-cost solid lubricant; the structure improving agent is capable of effectively improving the thickening capability of the product and shortening the production time; the thickening agent is capable of greatly improving the antiwear property and the antifriction property of the product and also has excellent pumpability; the raw materials are cheap and easily available; the preparation method is simple and easily controllable; the production efficiency of the product is greatly improved.

GC-MS analysis apparatus has an interface section between GC and MS sections, which is located with respect to the direction of an analyte flow downstream of the GC section and upstream of the MS section. The interface section comprises at least one membrane with at least one orifice capable of establishing a molecular flow condition in the analyte passing between the GC and MS sections through the membrane. The membrane is subjected to a pressure differential such that the pressure p_a in a region located upstream of the membrane is higher than the pressure p_b in a region located downstream of the membrane.

The invention discloses a soft foundation treatment method based on combination of two-time precipitation and dynamic consolidation. The soft foundation treatment method comprises following construction steps shown as figure 1: firstly, measuring and setting-out are performed, and a construction area range and a position of a tube well are determined; a drainage ditch is excavated to isolate phreatic water outside the construction area from entering the construction area; a shallow tube well is constructed, and primary precipitation is performed; medium-low energy dynamic compaction is executed, soil mass is consolidated, and phreatic water is extruded to the shallow tube well and pumped out; and vacuum tube well construction and secondary precipitation are performed; medium-high energy dynamic compaction is executed, drainage of pore water in soil mass is accelerated, and reconsolidation of the soil mass is accelerated; finally, low-energy full compaction is adopted to compact soil mass on the surface, the field is leveled, and detection is performed after a rest period.

The invention provides a portable centrifugal vertical water pump. The portable centrifugal vertical water pump comprises a bottom plate structure; an auxiliary structure is mounted at the right end of the bottom plate structure; a supporting structure is mounted at the left end of the auxiliary structure; a fixing structure is hinged to the upper end of the bottom plate structure; a detection structure is mounted at the lower end of the fixing structure; transmission structures are mounted at the front end and the rear end of the bottom plate structure; and one-way structures are mounted at the right ends of the transmission structures. The bottom plate structure further comprises a mounting plate and supporting rods, the two sets of supporting rods are rotationally mounted at the bottom of the mounting plate, wheels are rotationally mounted at the hinged positions and the tail ends of the supporting rods, bottom grooves are formed in the positions close to the mounting positions of the supporting rods, the supporting rods are mounted at the bottom, close to the left end, of the mounting plate, and the bottom grooves are formed in the rotating mounting positions of the supporting rods. The supporting rods can be clamped with the bottom grooves so that the mounting plate can be fixed at any angle of the bottom groove, and the overall stability of the mounting plate is improved.

The invention discloses a bottom uniform booster-type vacuum preloading treatment method. The method includes the steps that A, a preloading pit is formed through excavation; B, air inflation pipes are pre-buried in the preloading pit, the air inflation pipes include the bottom air inflation pipes which are pre-buried at the bottom of the preloading pit and vertical air inflation pipes which are vertically upward and connected with air inflation devices outside the preloading pit, exhaust holes are densely distributed in the upward sides of the bottom air inflation pipes, the bottom air inflation pipes are connected with the vertical air inflation pipes in a guiding mode, and the vertical air inflation pipes are sleeved with springs; C, a soil body needing to be subjected to vacuum preloading treatment is conveyed to the inside of the preloading pit, drainage plates are buried and connected with a pump drainage pipeline and a pump drainage device which are located on the upper portion, and the soil body is covered with sealing cloth; D, the pump drainage device is started to make the drainage plates pump water in the soil body till the pump drainage water amount is obviously reduced; and E, the air inflation devices are started to inflate the bottom air inflation pipes through the vertical air inflation pipes, the bottom air inflation pipes inflate the soil body upwards, and the pump drainage device works at the same time. By means of the bottom uniform booster-type vacuum preloading treatment method, when the pump drainage effects of the drainage plates are reduced greatly, the bottom of the soil body can be inflated, the water is squeezed and gathered to the drainage plates, the drainage effect is further improved, and the water in deep layer soil can also be pumped and drained.

A vacuum pump for producing a vacuum in a space which is to be evacuated has a housing (10) having a cylindrical inner space (22). An expeller (26) is arranged eccentrically in the inner space (22). A helical sealing element (34) is provided between the expeller (26) and an inner wall (38) of the housing (10) for forming at least one crescent-shaped conveying space. The housing (10) or the expeller (26) are connected to a drive device (44) for producing a relative rotary movement between the housing (10) and the expeller (26). According to the invention, the vacuum pump is configured as a dry-running vacuum pump.

The invention relates to an ultra-quiet pavement paving material and application. The ultra-quiet pavement paving material comprises an aggregate, rubber and a two-component solvent-free polyurethanebinder, wherein the mass percentage of the two-component solvent-free polyurethane binder is 5.0-6.0%; the mass percentage of the rubber is 4-12%; the balance is the aggregate; and the two-component solvent-free polyurethane binder is synthesized by an epoxy resin and a polyurethane binder prepolymer according to a mass ratio of 1:(3-6). According to the pavement paving material which is providedby the invention, cubic rubber particles are adopted to be in contact with the aggregate to form connected pores, play good roles in sound absorption and noise reduction, and are easy to form stone-rubber-stone skeleton structures and can be in good contact with the aggregate, and thus the stability and the durability of the mixture can be ensured.

The invention relates to a method for extracting copper in liquid-liquid solvent extraction from aqueous solutions with a high sulphate content, by raising the viscosity of the extraction solution and by dispersing the aqueous solution into drops, achieving a dense drop aggregation. The viscosity of the extraction solution may be raised either by increasing the content of the actual extractant, the extraction reagent, in the extraction solution or by using a diluting agent with a higher viscosity than that of the diluting agent normally used. By raising the viscosity of the extraction solution the mixing durability of the extraction dispersion can be increased and resulting of that the amount of residual drops is decreased. Other advantages are that the extraction solution flow of the extraction process decreases in relation to the flow of the aqueous solution acting as the copper source and that the size of the extraction equipment needed is reduced.

The present invention relates to a valve of liquid operation, especially a fuel injection valve. The valve has a valve shell, wherein in the valve shell, on one hand, a valve body interacted with a valve seat is guided, especially a nozzle needle, on the other hand, an operating element interacted with the valve body is guided, i.e., the operating element causes the valve body to be pressed into a closed position facing the valve seat through a spring force of a spring element attaching to a spring plate position of the operating element, while fluid pressure at the valve body position raises the valve body from the valve seat against the spring force of the spring element, wherein fluid leaks and gathers in a spring cavity of the valve shell for containing the spring element and can be outputted from the valve through a leakage pipeline, and wherein, at least one hole is leaded in the spring plate of the operating element for connecting a sub-cavity of the spring cavity arranged at a first side of the spring plate with a sub-cavity of the spring cavity arranged at a second side of the spring plate.