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558 results about "Close-ended" patented technology

A closed-ended question contrasts with an open-ended question, which cannot easily be answered with specific information. Examples of close-ended questions which may elicit a "yes" or "no" response include:

Graphite powder suitable for negative electrode material of lithium ion secondary batteries

A graphite powder has surface closed-end structures in which the graphite c-plane layers of the graphite layer crystal lattices have closed-ends on the surface of the graphite powder by linking the ends of one or more pairs of the c-plane layers, leaving interstices which are open on the surface of the graphite. The number of open interstices is at least 100 and at most 1500 per micrometer in a c-axis direction of the graphite. Preferably, the graphite powder has a specific surface area of 1.0 m2 / g or less. Such a graphite powder can be prepared either by graphitizing a carbon material, which has been pulverized at a high speed under well-controlled conditions before and / or after the carbonization, or by subjecting a carbon material, which has been pulverized under well-controlled conditions before and / or after the carbonization, to graphitization and then to oxidative heat treatment at a temperature of 600-800° C. and finally to heat treatment at a temperature of 800° C. or higher in an inert gas. The graphite powder can be used to produce negative electrodes of lithium ion secondary batteries having a high discharge capacity of at least 320 mAh / g and a high charge / discharge coulombic efficiency of at least 90%.
Owner:NIPPON DENKO CO LTD +1

High-strength bolt axial force measuring device and measuring method

The invention discloses a high-strength bolt axial force measuring device and measuring method. The measuring device comprises a pull rod, an axial force sensor, a force providing part and a support; the close end of the pull rod is provided with a connecting part for being connected with a high-strength bolt thread end, and the close and far ends of the pull rod are provided with a first match part and a second match part respectively; the first match part is in match contact with the close end face of the axial force sensor, the second match part and the far end of the force providing part act in a match mode, the far end of the support is mounted between the force providing part and the axial force sensor, and the close end of the support is used for being supported on a part connected with a high-strength bolt; and the high-strength bolt axial force measuring device also comprises a strain measuring part arranged on a nut. The measuring method comprises the steps of (1) mounting the strain measuring part on the axial outer face of the nut; 2, connecting the pull rod with the thread end of the high-strength bolt in the match mode; and 3 starting the force providing part to read the value of the axial force sensor at proper time according to the changing condition of the stain measuring part. The high-strength bolt axial force measuring device and method are accurate in measuring by directly measuring the axial force of the high-strength bolt.
Owner:LONGYUAN BEIJING WIND POWER ENG TECH

Barometric pressure microwave plasma generation device

The invention relates to a normal pressure microwave plasma generating apparatus, which consists of a rectangular waveguide, a wave-transparent gas seal membrane, a waveguide changeover mechanism, a microwave resonant cavity, a closure end adjustable phase matching unit, a reactor, a flame lighter, an outer layer cooling collar and a rotating air current generating unit. The microwave transmits in the rectangular waveguide, the reactor is disposed on the geometrical center in the resonant cavity which has the air cooling collar installed outside, the flame light is disposed upon a gas reaction tube and the rotating air current generating unit, the combined type insulated high temperature resistant electrode of the flame lighter is disposed along the inner axis of the quartz tube with the end position adjustable up and down freely. The invention achieves the following advantages: adopting the rectangular waveguide and waveguide conversion can make the microwave energy gathered to process higher power; the power capacity can reach 2KW; the close end can adjust the phase matching unit to generate standing wave in the resonant cavity, ensures the microwave energy coupled to the resonant cavity, reduces microwave reflection loss and improves energy utilization efficiency.
Owner:DALIAN MARITIME UNIVERSITY

Dynamic full performance test system for multifunctional belt balance

ActiveCN101476931AExpand the belt speed coverageWeighing apparatus testing/calibrationSlope angleEngineering
The invention relates to a multifunctional belt balance dynamic overall-performance testing system with relatively less occupied area and investment, and is suitable for belt conveyors with a plurality of belt width and groove-shaped angles. The system can test both an embedded type belt balance and an integrated type belt balance, and can develop both a test project of a metering belt balance and the test project of a quantitive belt balance. The system is characterized in that a plurality of the belt conveyors with different belt width and length are mounted in different elevation by layers (at least two layers) and are close end to end; the end-to-end close part is provided with pits or feed bins which are used for continuing or caching of a tested material; at least one of the pits or feed bins is used as control weighing equipment for a high-precision hopper balance; and each conveyer can adopt a layout of a reciprocating return or annular continuous mode. Each long conveyer can be embedded with the metering belt balance to be tested with corresponding belt width; and an integrated-type quantitive belt balance to be tested can be conveniently rearranged on a short belt conveyer part. In testing, a material entering the bottom layer the pit is lifted to the feed bin of the top layer by the belt conveyor with a large slope angle and is recycled and utilized time and again.
Owner:NANJING SANAI IPC CO LTD +1
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