93results about How to "Eliminate strength" patented technology

The invention provides an all-fiber testing device for testing the polarization crosstalk of an optical device. The all-fiber testing device comprises a wide-spectrum light source (501), a polarizer (511), a to-be-tested polarizing device (522), an optical path correlator (530), a difference detector (550) and a photoelectric signal conversion and signal recording device (560), wherein the wide-spectrum light source (501) is connected with the to-be-tested optical fiber device (522) through the polarizer (511) and a first rotary connector (521) and is connected with the optical path correlator (530) with a polarization beam splitting Michelson structure through a second rotary connector (523); and the optical path correlator (530) is connected with the polarization difference detector (550) through a third rotary connector (541) and is connected with an interference signal detecting and processing device (560). The all-fiber testing device has the advantages of small size, high measurement accuracy, high temperature and vibration stability and the like, so that the all-fiber testing device is widely applied to high-accuracy measurement and analysis of the polarization performance of the optical device.

The invention provides a device and a method for improving polarization crosstalk measurement performance of an optical device. The device comprises a wide spectrum light source (301), a polarizer (311), a polarization device to be tested (632), an optical path correlator (640) and a polarization crosstalk detection and signal recording device (150), wherein the wide spectrum light source (301) is connected with the optical device to be tested (632) by the polarizer (311) and a first rotation connector (631) and then is connected with the optical path correlator (640) by a second rotation connector (633). By the device and the method, noise amplitude can be greatly suppressed, the sensitivity of polarization crosstalk measurement is improved, the dynamic range of polarization crosstalk measurement is expanded, and the device and the method are widely used for high-precision measurement and analysis on polarization performance of the optical device.

The invention discloses a reflective ultrasonic anemoscope and a measuring method thereof. The reflective ultrasonic anemoscope comprises four parts, namely a probe mounting seat (1), ultrasonic probes (21, 22, 23 and 24), a bracket (3) and a reflecting surface (4), wherein the four ultrasonic probes (21, 22, 23 and 24) are fixedly arranged on the probe mounting seat (1), are divided into two groups and are arranged on two orthogonal axes; and various ultrasonic probes (21, 22, 23 and 24) transmit ultrasonic signals in turn, and opposite ultrasonic probes (21, 22, 23 and 24) receive signals reflected by the reflecting surface (4). A wind speed value and a wind direction value are solved by a vector composition method. The reflective ultrasonic anemoscope eliminates influence on measurement due to a difficultly fixed measuring structure and great change of signal intensity along with the wind speed.

The invention discloses a friction material of a disc brake pad. The friction material comprises the following raw materials in parts by weight: 13-18% of cashew nut shell oil-modified phenolic resin, 9-16% of butyronitrile rubber powder, 3-7% of steel wool fiber, 6-11% of calcium sulfate whisker, 2-5% of potassium feldspar powder, 3-6% of graphite, 2-6% of brown fused alumina, 3-5% of antimony sulfide, 11-16% of baryta powder, 5-9% of chromite powder, 6-11% of heavy calcium carbonate, 2-4% of zircon sand and 3-6% of brass powder. Visibly, in the preparation raw materials, the cashew nut shell oil-modified phenolic resin is adopted for replacing ordinary phenolic resin as an organic carrier of a brake pad material, so that the shortcomings of poor resistance to thermal ablation, high abrasiveness, low anti-impact strength and the like of the ordinary phenolic resin are eliminated, the performance defects of the friction material of the disc brake pad caused by the ordinary phenolic resin can be avoided, and the overall performance of the friction material of the disc brake pad can be further improved.

An adsorbing collagen fibre-solidified tannin material for adsorbing and separating metallic ions (Pb, Cd, Hg, Cr and Cu) is prepared from animal skin through preparing collagen fibre membrane or granules, adding the said collagen fibres along with the aqueous solution of tannin to a reactor, reacting at 10-45 deg.c for 6-24 hr, laying aside for 12-24 hr, filtering, washing to remove excessive tannin, adding cross-linking agent, reacting at 20-70 deg.c for 2-8 hr, filtering, washing and drying at 60 deg.c for 12-24 hr. It has very high adsorption selectivity.

This invention relates to high voltage circuit current measurement optical inductor and its test method, wherein, the sensor head is of bar magnetic materials along line distribution input fiber; the basic path is composed of self focus lens, bias device, optical sensor head, test bias device, parallel output self focus lens and fiber and vertical output focus lens and fiber. The test current passes through ring conductor to establish parallel magnetic field with at least one basic light path. The multiple light paths each sensor head is of same distance separately connected to low voltage two photoelectricity converters to output voltage signal and vertical voltage to compute test current.

Abstract of the Disclosure A method of fabricating plastic objects having an insert of Lenticular lens material integrally bonded or otherwise attached therein. In one embodiment, the method is used to fabricate a container, such as a conical cup, by first manufacturing or providing a sheet of Lenticular material comprising layers of lens material and optical ridges and grooves and an ink layer printed on the flat side of the lens material. To protect the ink from the heat of molten or moldable plastic during later plastic processing, a thermally protective substrate is attached or bonded to the ink layer by using adhesives to attach a plastic substrate or by coating the ink with coating materials that thermally protect the ink from high temperatures. In one embodiment, the protective substrate is applied in a two step process of first placing a plastic hot melt onto a polyester or other material release liner and, after cooling of the hot melt, using heat and pressure to laminate or bond the hot melt plastic to the ink and then removing the liner. Lenticular inserts are cut out of the Lenticular material sheets and the inserts are positioned within a mold where the container is formed by injection, blow, or other molding process. In this step, the substrate acts as a bonding surface as it contacts the molten plastic, melts, and then cools forming a bonding interface with the plastic used to form the container.

The invention relates to a method for manufacturing fast-growing wood sheet, in particular to a manufacturing method for modifying a fast-growing poplar board, belonging to the technical field of sheet manufacture. The invention has the advantages of small internal stress of a compressed carbonized poplar board manufactured by the method and good stability of the size of the board, thereby ensuring the quality of a compressed carbonized wood. The invention overcomes the defects of a fast-growing poplar sheet, such as low density, low hardness, low strength, easy corrosion, difficult direct use and the like, improves the density of the sheet by carrying out compression and densification for the poplar sheet, carries out carbonization on the compressed poplar sheet on the condition of pressurization, and eliminates the compression stress inside the sheet so as to prevent springback of the sheet and improve the size stability, density and strength. The poplar board manufactured by the method can be directly used as a sheet. The compressed carbonized poplar board can be partially or entirely used to replace high-quality precious wood, thereby relieving the contradiction between continuously reduced precious wood resources and increasing demand for wood.

The present invention is directed to an exercise and training device for runners and provides a means to train them to stay in the most efficient position for optimum muscle use and to improve speed and lateral quickness. The device comprises an upper thigh strap, a foot stirrup and a length of resilient elastic material adjustably secured therebetween and adjusted to maintain the user's knee at a 90° angle during running.

The challenges in this invention is to provide automobile use mat that has distinguished noise absorption and anti-slip features, as well as it being light in weight for a low cost.

The inventors, for their exerted investigations in resolving such challenges and as a result, as a replacement to the frequently used conventional mats with mounted resin (bump) emboss configuration, have introduced the nonwoven fabric layer from polypropylene fiber, burned on the lower surface side of the nonwoven fabric layer, deforming the fibers, forming anti-slip layer from melt bonding the fibers together, discovered the possibilities in achieving an automobile use mat that is light weight, permeable, dominant in its anti-slip effect, easy to bend as well as handle, that lead to this invention.

A method of fabricating plastic objects having an insert of Lenticular lens material integrally bonded or otherwise attached therein. In one embodiment, the method is used to fabricate a container, such as a conical cup, by first manufacturing or providing a sheet of Lenticular material comprising layers of lens material and optical ridges and grooves and an ink layer printed on the flat side of the lens material. To protect the ink from the heat of molten or moldable plastic during later plastic processing, a thermally protective substrate is attached or bonded to the ink layer by using adhesives to attach a plastic substrate or by coating the ink with coating materials that thermally protect the ink from high temperatures. In one embodiment, the protective substrate is applied in a two step process of first placing a plastic hot melt onto a polyester or other material release liner and, after cooling of the hot melt, using heat and pressure to laminate or bond the hot melt plastic to the ink and then removing the liner. Lenticular inserts are cut out of the Lenticular material sheets and the inserts are positioned within a mold where the container is formed by injection, blow, or other molding process. In this step, the substrate acts as a bonding surface as it contacts the molten plastic, melts, and then cools forming a bonding interface with the plastic used to form the container.

The invention relates to an environment friendly oxidation type hydrophobic glucomannan adsorption material and a method for preparing the same, and belongs to the technical field of compositions containing glucomannan materials. The adsorption material comprises the following components in portion by weight: 20 to 100 portions of glucomannan, 50 to 500 portions of 0 to 70 percent glucomannan swelling inhibitor, 5 to 100 portions of alkali, 50 to 500 portions of water, and 1 to 20 portions of oxidizing agent. The preparation method comprises that: the glucomannan is swelled in an alkali mixed solvent of the swelling inhibitor, and subjected to acetyl group removing reaction for 1 to 40 hours at a temperature of between 35 and 90 DEG C; the mixed solution is filtered and washed so as to remove the swelling inhibitor and the excessive alkali, and the obtained product is dried at a temperature of between 50 and 100 DEG C for 8 to 24 hours to obtain the hydrophobic glucomannan; the hydrophobic glucomannan is swelled in water, the pH value is adjusted to be 3 to 12, and then the oxidizing agent is added to hydrophobic glucomannan and reacts for 1 to 24 hours; and the obtained mixed solution is filtered, washed and dried at a temperature of between 50 and 100 DEG C for 8 to 24 hours to obtain the oxidation type hydrophobic glucomannan adsorption material. The material has higher selective adsorption capability on heavy-metal ions and radioactive nuclides, and can be widely applied to the adsorption and separation of the heavy-metal ions and radioactive nuclides generated in mining, mining and metallurgy, chemical industry, electroplating, machinery, nuclear industry, environmental protection and restoration, and the like.

The invention provides a three-dimensional display capable of eliminating color non-uniformity and intensity non-uniformity on a three-dimensional image. The three-dimensional display comprises: a two-dimensional display, which comprises a plurality of color subpixels arranged in rows extending in a horizontal direction and in columns extending in a vertical direction which is substantially perpendicular to the horizontal direction, the color subpixels of red, green and blue being arranged periodically in the rows and the color subpixels of the same color being arranged in the columns; and a lenticular sheet provided on the two-dimensional display and having a plurality of cylindrical lenses through which the color subpixels are viewed and which extend in parallel with one another, the central axis of each cylindrical lens being inclined at an angle of theta to the column of the two-dimensional display, wherein, when a pitch of the color subpixels in the horizontal direction is px, a pitch of the color subpixels in the vertical direction is py, and a color subpixel group constituting one three-dimensional pixel is constituted by 3M*N number of color subpixels where 3M is the number of color subpixels in each row of one of the cylindrical lenses and N is the number of color subpixels in each column of one of the cylindrical lenses, a relationship, theta = tan -1 (3px /NPy ), is satisfied.

Disclosed is a tool for both removing and tightening screw-on drains that is simple and easy to use, has a simple design and is easy to manufacture. The tool is capable of engaging an inner surface of a drain flange in a manner that is sufficient to transfer enough force to remove screw-on drain flanges and is capable of use with various designs and sizes of screw-on drain flanges. Different size cams and different lever arms used on the cams allow the tool to optimize the radial force to torque ratio for both removal and insertion of screw-on drain flanges. In addition, nubs are used at the bottom of the drain flange to engage arms that typically are used on drain flanges to further add to the resistance that can be provided between the tool and the drain flange and distribute forces in a dynamic, instantaneous and automatic fashion to optimize removal of the drain flange.

An open clamshell-type food container is prevented from collapsing by means of a securing tab joined to the side wall of one of the container shells, a side wall joined to the other container shell, the two side walls being in alignment, and the securing tab being affixed to the other side wall.

The invention discloses a gas absorptivity online measurement method based on a modulation factor, belonging to the technical field of tunable diode laser absorption spectroscopy (TDLAS). The gas absorptivity online measurement method comprises the following steps: firstly, determining the width of an absorption spectral line through a characteristic of a fixed point by using a ratio of a quadratic harmonic wave to a quartic harmonic wave, and figuring out a modulation factor; and then determining a peak absorption rate of the spectrum line according to a ratio of the quadratic harmonic wave to the primary harmonic wave when the modulation coefficient is equal to 0.94. The gas absorptivity online measurement method is simple in principle; the influence of factors such as laser intensity fluctuation and a photoelectric enlargement factor is eliminated, the problem that the absorption rate can not be accurately measured in a wavelength modulation method is effectively solved, and the application range of a TDLAS technology is widened.

The present disclosure relates to a segmental joint of cast-in-place UHPC bridge beam, and belongs to the field of bridge structure. The joint comprises a plurality of female joints disposed at an end of a first segment and a plurality of male joints disposed at an end of a second segment, wherein each female joints and the male joints are correspondingly connected to form a tongue-and-groove connection, and each of the male joints is of a structure with big outer part and small inner part. The beam segment joint of the present disclosure not only applies to the joint connection between the segmental cast-in-place UHPC beam segments and the construction of the segmental cast-in-place UHPC beam segment, but also to joint connection of UHPC bridge deck of UHPC-steel composite beam and of full UHPC bridge deck of UHPC composite box girder with corrugated steel webs and to UHPC bridge deck construction.

The invention relates to a lost foam casting die and method for a braking disc and belongs to the technical field of lost foam casting and aims to solve the technical problem of short service life. According to the lost foam casting die and method for the braking disc, lost foam casting is adopted, the hardness of a friction surface of the braking disc is uniform and the service life is long. According to the technical scheme, the lost foam casting die comprises an upper die, a lower die and a semi-circular casting lost foam pattern, wherein cavities are formed in inner surfaces of the upper die and the lower die, a casting cavity is formed between the upper die and the lower die after the upper die and the lower die are buckled, the semi-circular casting lost foam pattern is arranged in the casting cavity, multiple movable blocks are arranged in the semi-circular casting lost foam pattern, and sprue gates are formed in tops of the upper die and the lower die. The lost foam casting die and method for the braking disc are widely used for casting of the braking disc.

The invention provides a free-cutting aluminum copper alloy extruded bar and a preparation method thereof. The aluminum copper alloy extruded bar comprises the following components of, in percentage by mass, 3.5%-4.5% of Cu, 0.6%-0.9% of Mg, 0.6%-1.0% of Mn, 0.4%-0.6% of Cr, 0.15%-0.25% of Ce, 0.06%-0.1% of B, 0.01%-0.02% of Ti, 0.0004%-0.0008% of C, 0.8%-1.2% of Sn, 0.3%-0.5% of Bi, less than orequal to 0.2% of Fe, less than or equal to 0.1% of Si, and the balance Al and other impurity elements. The preparation method of the bar sequentially comprises the steps of burdening, smelting an aluminum copper molten alloy, in-furnace blowing and refining treatment and degassing and impurity removing, on-line grain refining, on-line degassing filtering treatment, semi-continuous casting treatment, cast bar homogenizing, heating extruding treatment, on-line quenching and artificial aging treatment. The aluminum copper alloy extruded bar does not contain heavy metal element lead, meets the environment-friendly requirement, and has good mechanical properties and excellent cutting machining performance; cutting chips are easy to break, not prone to adhere to or twine around a cutter, the production efficiency of cutting machining is improved, and the surface smoothness and the size precision of products are improved.