119results about How to "Get cheap" patented technology

A system for transportation or access control of persons and / or goods in a building comprises at least one story terminal for recognition of at least one identification code of a person or an item, at least one data memory for storing at least one user profile with details with respect to a predefined destination story of the person or item or with details with respect to the access authorization of the person or item to a zone of the building, and at least one processor for associating a recognized identification code with a user profile. The processor and the data memory are arranged in at least one bus module. The bus module communicates, through a signal bus, details with respect to the predefined destination story of the person or item or details with respect to the access authorization of the person or item to the zone. A methodology for maintaining the system can be implemented through a computer program. The system can also be retrofitted into existing installations.

The invention discloses a high temperature seepage test device and method. The device is mainly composed of a nitrogen gas bottle, a pressure chamber, a pressure chamber cover plate, upper and lower gas guide pressing heads, a main engine shaft pressing head, a collecting bottle and a gas flow meter. The method comprises the following steps of: filling nitrogen gas to a coal rock sample in the pressure chamber, enabling the nitrogen gas to flow out by a flow guide channel after permeating through the coal rock sample under a certain pressure and temperature, making the nitrogen gas pass through a gas outlet of the main engine shaft and enter in the collecting bottle by a communicating pipe, discharging the nitrogen gas in the collecting bottle by a gas discharging pipe on a top cover of the collecting bottle, and recording flow quantity of the discharged gas at this time by the gas flow meter; closing a pressure control valve by regularly increasing the pressure of the nitrogen gas for multiple times until the pressure of the filled nitrogen gas is increased to 4MPa, meanwhile, stopping work by regularly rising the temperature of the coal rock sample for multiple times until the temperature is rose to 600 degrees centigrade; and analyzing the acquired data to finish the overall test. The test device is simple in structure, the test method is simple and convenient and good simulation effect is realized.

A connecting device suitable for connecting a movable conducting terminal (2) of a switching device (3) to a stationary conducting terminal (4) of a switchgear apparatus (5), comprises: a pin-group (6) suitable for being inserted into an opening (7) obtained in a connection-region (10) which is defined by mutually overlapping portions of the movable (2) and stationary (4) conducting terminals, the pin-group (6) having a head-end (8) and a pressing-clamping-end (9) which are suitable for being positioned at opposite sides with respect to the connection-region (10). The pin-group (6) is movable from a releasing position (15), in which a mutual separation of the movable (2) and stationary (4) conducting terminals is enabled, to a locking-clamping-position (16), in which the movable (2) and stationary (4) conducting terminals are reciprocally clamped. There are provided locking-positioning-means (14) configured for keeping the pressing-clamping-end (9) blocked in the locking-clamping-position (16) and for imparting to the pressing-clamping-end (9), upon a movement of the pin-group (6) from the releasing position (15) to the locking-clamping-position (16), a tightening displacement (17) so as to generate a tightening force which presses the mutually overlapping portions against to one other. The connecting device (1) is provided with tightening-control-means (40) configured for controlling the tightening force so as to set a desired value of tightening-contact-pressure between the mutually overlapping portions.

A turbine blade locking device for axial retention of a turbine blade (1) having a blade root (3) inserted in an axially extending profiled lobe slot (5) of a turbine disk (4), wherein, a sealing fin of a blade platform (10) includes, over part of its axial length, a retaining groove (6) featuring a semicircular cross-section, a disk lobe (7) of the turbine disk (4) is provided with a semi-spherical recess (8), and a ball (2) is fitted into the recess (8) and the retaining groove (6).

The invention relates to a method for preparing MgO.Al2O3 superfine powder by a sol-gel process and belongs to the field of preparation of superfine powder. The method comprises the following steps: adding magnesium and aluminum in a ratio of amount of substance being 1: 2 into an organic alcohol solvent; by using iodine as a catalyst, preparing a precursor compound magnesium and aluminum double metal alkoxide under a heating condition; heating the alkoxide solution at the normal pressure so as to recover excessive organic alcohol; then, purifying by virtue of distillation at a reduced pressure; adding ethanol to prepare a 0.2-0.4mol / L alkoxide solution; dropwise adding deionized water, adding a chelating agent and stir to fully hydrolyze the alkoxide solution; gelling and drying; and roasting in a heating furnace to obtain MgO.Al2O3 superfine powder. The MgO.Al2O3 superfine powder prepared by the invention is simple in process and low in cost. The grain size range of the superfine powder prepared is within 200-600nm, and the superfine powder sprayed to molten steel can refine grains so as to improve the mechanical property of a steel product.

Disclosed is a rolling tool which serves for working - in particular rolling smooth - an inner lateral surface of a cylindrical clearance. For this purpose, the rolling tool has at least one rolling body, which is held in the rotatably drivable rolling tool, and can be taken along by said tool on a peripheral path along the inner lateral surface. In this case, the at least one rolling body is inserted into a radial clearance in the rolling tool and can be subjected to a pressurized fluid from the inside to the outside along the radial clearance. According to the invention, the fluid is an aerosol. The aerosol is a fluid mixed with gas and serves for hydrostatic bearing and lubrication. In this case, the amount of fluid required is reduced in comparison with the prior art - on the basis of minimal quantity lubrication (MQL).

The invention relates to an illumination device (100). The illumination device comprises a lamp tube (1) with two open ends, a light engine (2) arranged in the lamp tube (1), a carrier for carrying the light engine (2), and two end covers (3) for sealing the open ends. The illumination device (100) is characterized by further comprising a diffuser (4), wherein the carrier for carrying the light engine (2) is kept on the diffuser (4), and the diffuser (4) is kept on the inner wall of the lamp tube (1).

A midsole for footwear includes at least one solid or hollow cushioning tube positioned therein for improving the cushioning of the midsole. Preferably, the midsole includes a plurality of cushioning tubes fabricated of an elastomeric material. The tubes may vary in diameter and / or wall thickness relative to one_another for varying the cushioning and stability characteristics of the system. Each tube may also vary in diameter and / or wall thickness along its length.

A lithium ion secondary cell negative electrode material is obtained in the present invention. The negative electrode material contains: particles (A) containing elements other than elemental carbon that are capable of storing and emitting lithium ions; graphite particles (B) that are capable of storing and emitting lithium ions, the median in the reference distribution for the primary particle aspect ratio as relates to the graphite particles (B) being 1.4-3.0; and carbon fibers (C). A three-dimensionally interwoven net structure is formed using one or more of the carbon fibers (C). The particles (A) are fused to the structure, and the structure is fused to at least a portion of the surface of the graphite particles (B). A lithium ion secondary cell is obtained using the negative electrode material.

The present invention relates to a novel process of preparing an enantiomerically enriched Gamma-amino acid, such as enantiomerically enriched (S)-pregabalin.

A data observation device observes internal data of a control device for controlling a machine tool, an industrial machine, an industrial robot, or the like which has at least one drive shaft driven by one selected from a servo motor, a spindle motor. The device includes: means which specifies observational data targeted for observation; means which specifies trigger data used to determine a timing of a trigger for starting and / or terminating acquisition of the observational data; means which sets a trigger condition for applying the trigger based on a value of the trigger data; and means which judges whether or not the trigger condition is satisfied in the control device, selectively starts and terminates acquisition of a value of the observational data, and displays the acquired observational data.

The invention discloses a method for preparing a diphenyl acetylene class compound in eutectic ionic liquid, which comprises the following steps of: adding quaternary ammonium salt-imidazole eutectic ionic liquid into a reactor under protective gas, taking aryl iodide and aromatic acetylene as raw materials and CuI / Pd(Ph3P)4 / Ph3P as a catalyst and reacting for 4 to 12h under the temperature condition of 20 to 60 DEG C to prepare the diphenyl acetylene class compound. The invention takes the quaternary ammonium salt-imidazole eutectic ionic liquid as a solvent to prepare the diphenyl acetyleneclass compound and has the advantages of low reaction temperature, small contamination in the preparation process, simple operation, energy saving, discharge reduction and environmental protection, the product has simple and convenient separation and high yield, and the catalyst can be recycled.