87results about How to "Large volume change" patented technology

A self-powered medical device, for example a pacemaker uses the variations of blood pressure inside the heart or a major artery to create a mechanical resonance in an electromagnetic or piezoelectric generator. The resonance extends the time power is generated during the cardiac cycle. The pressure variations compress a bellows carrying the resonant generator. The inside of the bellows may be evacuated to a partial or full vacuum, and a spring restores the bellows to the desired equilibrium point, acting against the blood pressure. The current pulses are stored in a capacitor. Eliminating the battery allows dramatic miniaturization of the medical device to the point it can be implanted at the point of desired stimulation via a catheter.

A compressible hearing aid includes an exterior deformable skin which bounds an internal region which is filled, at least in part, with an open-cell foam, the foam can be wrapped around or molded to contain an audio output transducer. The skin is not self-supporting and in response to applied forces from user's ear canal, the skin and the foam both deform and readily compress exhibiting a reduced volume. Though compressed, the foam exerts an outward force against the skin thereby continuing to form an elongated seal between the skin and the external periphery of the user's dynamically changing ear canal. As the volume of the ear canal increases, the skin and open-cell foam expand, exhibiting an increased internal volume, while maintaining a comfortable seal with the ear canal. A plurality of external ribs carried on the skin not only reduces feedback but promotes drying of the ear canal and promotes retention of the hearing aid in the ear canal.

The invention discloses a high-temperature-resistant insulation coating and a preparation method and application thereof. Slurry for preparing the high-temperature-resistant insulation coating is at least prepared from the following components in parts by mass: (a) 100 parts of polysilazane resin, (b) 1-100 parts of polysiloxane resin containing active functional groups, (c) 5-100 parts of a filler, and (d) 0-10 parts of an assistant. By adopting the polysilazane resin as a primary film forming substance and adopting the polysiloxane resin containing the active functional groups as a secondaryfilm forming substance, the high-temperature-resistant property is ensured, and the coating also has good tenacity; the preparation method is simple and does not rely on special equipment; the temperature-resistant property of the high-temperature-resistant insulation coating prepared through the method can be appropriately adjusted according to actual needs so as to adapt to different application fields; and the preparation method is wide in application range and can be suitable for various insulation objects, strips, pipes, wires and the like.

A silicon composite comprises silicon particles whose surface is at least partially coated with a silicon carbide layer. It is prepared by subjecting a silicon powder to thermal CVD with an organic hydrocarbon gas and / or vapor at 900-1,400° C., and heating the powder for removing an excess free carbon layer from the surface through oxidative decomposition.

A rotary heat engine having a cylinder and a rotor having a rotating shaft rotatably placed in the cylinder. The cylinder has a heat receiving section for supplying heat to the inside of the cylinder and a heat radiating section for radiating heat from the inside. The engine also has an engine section body and an operation liquid storage section. A vaporized gas supply channel and a gas recovery channel communicating with the inside of the cylinder are provided, respectively, on the heat receiving section side and heat radiating section side of the cylinder in the engine section body. The operation liquid storage section is between the vaporized gas supply channel and the gas collection channel in order to aggregate and liquefy recovered gas and is installed such that both channels fluidly communicate with each other. Also, the operation liquid storage section has a heat insulation dam provided with a through hole for preventing backflow of fluid flowing inside.

The invention relates to a motor vehicle seat (1) having an upholstered component (3) which is covered by flexible covering (4), and a safety device which is arranged in the upholstered component (3) and has an airbag (5) which is coupled to a gas generator (6). The gas generator (6) is activated when sensor data relating to an accident or an imminent accident are present to inflate the airbag (5) with gas and unfold the airbag. An activator (8) is provided by means of which the airbag (5) or separate gas cushion (7) can be additionally repeatedly inflated with gas in a reversible fashion. The covering (4) is of an inelastic design, at least in certain areas, and has an elastic section (9) which is arranged in the covering (4).

The invention discloses a method for preparing an yttrium tantalate high-temperature ceramic through a solid phase method, wherein the molecular formula of the compound yttrium tantalate is YTaO4. According to the preparation method, the used raw materials are yttrium oxide and tantalum oxide; and the method comprises: weighing the raw materials according to a certain ratio, mixing the raw materials in anhydrous ethanol, placing into a planetary ball mill, carrying out ball milling to achieve a uniformly-mixing state, drying the mixed powder, screening, placing into a mold, compacting, pre-sintering, cooling, taking out the pre-sintered sample, grinding, carrying out ball milling, drying, screening, placing the screened powder into the mold, compacting, and carrying out secondary sintering. According to the present invention, the product purity of the process is high, the impurity content is low, the product preparation cost is low, the method is suitable for mass production, and the target product is expected to be used as the novel high-temperature resistant, anti-oxidation and anti-wear ceramic material.

The invention discloses an active water-draining type fuel cell. The active water-draining type fuel cell comprises a positive electrode structure, a negative electrode structure, a proton exchange membrane positioned between the positive electrode structure and the negative electrode structure, and a water-draining apparatus, wherein the positive electrode structure comprises a positive electrode runner plate, a positive electrode dispersion layer and a positive electrode catalytic layer which are arranged from the top to bottom in sequence; the positive electrode catalytic layer is connected with the proton exchange membrane; the negative electrode structure comprises a negative electrode catalytic layer, a negative electrode dispersion layer and a negative electrode runner plate which are arranged in sequence; the negative electrode catalytic layer is connected with the proton exchange membrane; the negative electrode runner plate comprises a porous carbon core layer and a graphite base layer; the upper part of the porous carbon core layer is connected with the negative electrode dispersion layer while the lower part of the porous carbon core layer is connected with the graphite base layer; and one end of the porous carbon core layer extends to be connected with the water-draining apparatus. The active water-draining type fuel cell has the beneficial effects as follows: the negative electrode runner plate adopts the porous carbon core layer and the graphite base layer, so that liquid water generated by a reaction in the fuel cell can be led out actively so as to effectively prevent from water logging; and in addition, the additionally provided water-draining apparatus is simple in structure and easy to realize.

A non-aqueous electrolyte secondary battery including a positive electrode having a positive electrode mixture layer containing a positive electrode active material, a binder, and a conductive agent, and a negative electrode having a negative electrode active material capable of intercalating and deintercalating lithium. The positive electrode active material includes a layered lithium-transition metal composite oxide represented by the compositional formula LiaNixM(1-x)O2 where 0<a≦1.1, 0.5<X≦1.0, and M is at least one element. The binder contains a fluororesin and a nitrile-based polymer. The amount of the nitrile-based polymer is 40 mass % or less with respect to the total amount of the binder.

The invention relates to a motor vehicle seat (1) having an upholstered component (3) which is covered by flexible covering (4), and a safety device which is arranged in the upholstered component (3) and has an airbag (5) which is coupled to a gas generator (6). The gas generator (6) is activated when sensor data relating to an accident or an imminent accident are present to inflate the airbag (5) with gas and unfold the airbag. An activator (8) is provided by means of which the airbag (5) or separate gas cushion (7) can be additionally repeatedly inflated with gas in a reversible fashion. The covering (4) is of an inelastic design, at least in certain areas, and has an elastic section (9) which is arranged in the covering (4).

The invention provides a method for preparing carbon nanotube and PCM-combined phase change temperature control component, which aims to provide a method for preparing a phase change temperature control component with high phase change latent heat and better heat conduction effect. The present invention is implemented as follows: casting pyrolytic graphite in the heat sink bottom and the verticalhot wall surface of a metal conductor packaging container; combining carbon nanotubes and phase change materials by ultrasonic vibration to form a carbon nanotube and phase change composite material,and charging the liquid carbon nanotube and phase change composite material in a heat conductive reinforcing skeleton by a vacuum co-fusion method; welding the heat conductive reinforcing skeleton ina phase change cavity to form a multilayer phase change latent heat self-control adjustment level that the pyrolytic graphite wrapping, in a U-shape, heat conductive reinforcing skeleton, and forminga thermal insulation buffer layer from the phase change cavity; and finally, welding a cover plate on the stepped opening of the metal conductor packaging container by electron beam welding, enclosingto form a closed phase change temperature control component, and processing to obtain the boundary dimension according to requirements.

The present disclosure provides an anode for a secondary battery, including: an electrode current collector; a first coating layer formed on the electrode current collector and including an anode active material, a first nonaqueous binder and a conducting material; and a second coating layer formed on the first coating layer and including a second nonaqueous binder. Since the anode of the present disclosure can reduce volume change of the anode active material, a lithium secondary battery including same may have improved cycle characteristics.

The invention discloses a mucus drag reduction device for a underwater vehicle, which belongs to the technical field of ship drag reduction and efficiency increasing. The mucus drag reduction device for the underwater vehicle comprises an air cylinder, a piston cylinder, a flow control valve, a controller, a joint, mucus, an air pipe and liquid pipes. The cavity of the piston cylinder is divided into two parts through a piston; the cavity on one side is connected with the air cylinder through the air pipe; the mucus is within the cavity on the other side; the cavity, full of the mucus, of the piston cylinder is connected with an inlet of the joint through the liquid pipe with the flow control valve; more than one outlets of the joint are respectively connected with mucus releasing holes in a underwater vehicle housing through the liquid pipes; and the controller is connected with the flow control valve. According to the invention, the drag reducing mucus releasing speed can be automatically adjusted according to the navigational speed of the underwater vehicle so that the drag reducing mucus uniformly and persistently cover most external surface of the underwater vehicle to increase the maximum navigational speed of the underwater vehicle and energy consumption can be also reduced at equivalent navigational speed.

The invention relates to a repair welding method for a magnesium alloy casting oil way. A graphite material is used as a repair welding base plate for carrying out repair welding on defects of a casting, so that the purpose of repair is achieved. The characteristics of softness, easy removal, high temperature resistance and thermal shock resistance of graphite are utilized, in the using process, the repair welding base plate can bear acute changes of temperature so that damage and cracks can be prevented, and has various properties needed by an argon arc welding base plate, it is possible to repair the defects of the magnesium alloy casting oil way part, and the purpose of saving the casting is achieved.

The present invention is the preparation process of fast responding pH sensitive hydrogel, and belongs to the field of polymer material preparing technology. The preparation process of the hydrogel includes the following steps: dissolving sulfadiazine in alkali aqua and acetone solution, dripping acrylyl chloride to react, filtering the product, washing to eliminate unreacted monomer and impurity and drying to obtain sulfadiazine monomer; mixing N-vinylpyrrolidone, sulfadiazine monomer, 1N, N-methylene diacrylamide, azodiisobutyronitrile and dimethyl sulfoxide to form mixed solution and react in water bath at 30-100 deg.c for 2-24 hr to obtain hydrogel; soaking and washing with deionized water to eliminating unreacted monomer, cross-linking agent and solvent impurity, and drying to obtain the pH sensitive hydrogel. The prepared pH sensitive hydrogel is especially sensitive in pH 6.8-7.2, and is expected to prepare medicine release controlling supplementary material.

A machine tool main spindle balancer that stably pulls and urges a main spindle unit upward to reliably and effectively reduce a load for lifting a means for lifting the main spindle unit, that can be easily applied to existing machine tools, that is excellent in durability and is downsized, and that can be constructed in a simple structure to make the balancer advantageous in production costs. The main spindle balancer (30) has a gas spring (31) having a cylinder body (32), a rod (33), and compressed gas. The gas spring (31) is placed above the main spindle unit (10). The lower end of the rod (33) is connected to the main spindle unit (10) so that the rod (33) can pull and urges the main spindle unit (10) upward by urging force acting on the rod (33) of the gas spring (31). The urging force by the gas spring (31) reduced a load on a lifting mechanism (20).

A process for producing ceramic bearing components in which a material mixture is produced from an organometallic compound as a preceramic precursor and from silicon in element form or in the form of an alloy as a chemically reactive filler. The material mixture is subjected to reaction pyrolysis for conversion into a ceramic material.

The invention discloses a Sm-Gd-Dy tri-rare-earth ion tantalate and a preparation method and application thereof. The general chemical formula of the Sm-Gd-Dy tri-rare-earth ion tantalate is SmGdDy<c>TaO<7>, wherein the a, b and c meet the relationship of a+b+c=3 and are separately in a range of 0.8-1.2. The preparation method comprises the following steps: (1) weighing samarium nitrate, gadolinium nitrate, dysprosium nitrate and tantalum oxalate according to a stoichiometric ratio, performing mechanical mixing with citric acid with a preset amount under a heat preservation condition, adding a concentrated ammonia water neutralization solution during the mixing process, and carrying out mechanical mixing to promote a complexation reaction under a heat preservation condition; and (2)drying the obtained solution, and then carrying out calcination at a high temperature to remove carbon impurities to obtain the Sm-Gd-Dy tri-rare-earth ion tantalate powder. The Sm-Gd-Dy tri-rare-earth ion tantalate has good high-temperature thermal stability and low thermal conductivity, and can be used as a thermal barrier coating material.

A filtering device comprises a vessel for containing filtering media such as nutshells. Associated with the filtering device is an eductor for scrubbing and cleaning the media and removing contaminants such as oil from the media. The eductor includes an inlet port for receiving a motive liquid. Further, the eductor includes an inlet port for receiving media held in the vessel. In operation, a motive liquid is directed into the eductor and this induces media in the vessel into the eductor. By continuously directing motive liquid from an external source into the eductor, this results in the media being fluidized and circulated and recirculated through the eductor, giving rise to a slurry that contains liquid, the media and removed contaminants. A portion of the slurry is discharged from the filtering device while the media is retained in the filtering device.

The invention discloses Sm-Eu-Gd trirare earth ion tantalate as well as a preparation method and application thereof. The chemical general formula of the Sm-Eu-Gd trirare earth ion tantalate is SmaEubGdcTaO7, wherein a+b+c is equal to 3, and a,b,c is equal to 0.8 to 1.2. The preparation method of the Sm-Eu-Gd trirare earth ion tantalate comprises the following steps: (1) weighing europium chloride, gadolinium nitrate, samarium nitrate and tantalum oxalate according to a stoichiometric ratio, mechanically mixing with a set amount of citric acid under heat preservation conditions, adding a concentrated ammonium hydroxide neutralizing solution in a mixing process, and then mechanically mixing under the heat preservation conditions to promote the process of reaction; (2) drying the obtained solution, and then calcining at high temperature to remove carbon impurities to obtain Sm-Eu-Gd trirare earth ion tantalate powder. The Sm-Eu-Gd trirare earth ion tantalate is high in high-temperature thermal stability and low in thermal conductivity coefficient, and can be applied as a thermal barrier coating material.

The invention discloses an arc cylinder pendulum type internal combustion engine. The arc cylinder pendulum type internal combustion engine comprises an air cylinder (1) as well as pistons (2) and air valves (9) in the air cylinder (1), wherein the air cylinder (1) is annular; the pistons (2) are mounted at the two ends of each of arc-shaped connecting rods (3); the middle part of each of the arc-shaped connecting rods (3) is connected with a pendulum rod (4); the pendulum suspension point of the pendulum rod (4) is positioned in the center of the air cylinder (1); the pendulum rod (4) is connected with a crankshaft (6) through a connecting rod (5); working cavities are defined on the air cylinder (1) by the two adjacent pistons (2) respectively arranged on the different arc-shaped connecting rods (3); and the air valves (9) are arranged in the middle of the working cavities. A pendulum type structure is specially designed, so that the wall of the air cylinder is not additionally extruded by the pistons when power is transmitted to the crankshaft through the connecting rod due to the limitation of the pendulum rod, thereby solving the problem of an offset cylinder of the existing reciprocating internal combustion engine, noise and power consumption are reduced, power is increased, and the energy resources are saved.

Xanthan gum has been found to be a superior binder for binding an electrode, especially an anode, in a lithium-ion or lithium-sulfur battery, being able to accommodate large volume changes and providing stable capacities in batteries tested with different types of anode materials.

The embodiment of the invention provides a rowing machine and treadmill combined type multi-functional body builder. The body builder comprises a base, a running mechanism is arranged on the base, and a rowing mechanism is further arranged on the base. The running mechanism comprises a running supporting mechanism, a rotating roller and a running belt, the running supporting mechanism is connected to the base, the rotating roller is rotatably connected to the supporting mechanism, and the rotating roller is sleeved with the running belt. A sliding rail and a sliding seat are arranged on the base, the sliding seat is arranged above the running belt, and the sliding seat moves forwards and backwards along the sliding rail. The body builder further comprises a holding component, a traction component and a damping component fixed to the base, one end of the traction component is connected with the holding component, and the other end of the traction component is connected with the damping component. According to the embodiment of the invention, two kinds of fitness apparatuses are integrated on one piece of fitness equipment, so that the requirement of one machine for multiple functions is met, and meanwhile, the occupied area is greatly saved.

The invention relates to the technical field of sofas, in particular to a sofa with a dust removing device, which comprises a cushion, a backrest, handrails and a base, wherein the dust removing device and a dust collecting box are arranged below the base, the dust removing device comprises a first elastic piece, a swing rod, a cylinder body and the dust collecting box, the cylinder body is slidably connected on the base, a sliding block is connected in the cylinder body in a sliding way, and an enclosed accommodating cavity is formed between the sliding block and the cylinder body; the swingrod is rotatably connected to the base, one end of the first elastic piece is connected with the cushion, the other end of the first elastic piece is connected with one end of the swing rod, the otherend of the swing rod is hinged with the sliding block, a sucker is arranged at the bottom of the cylinder body, and a negative pressure valve is arranged in the communication position between the sucker and the cylinder body; the dust collecting box is fixedly connected on the base, the cylinder body is communicated with the dust collecting box through a pipeline, and the pipeline is provided with a residual pressure valve. According to the scheme, the pressure in the cylinder body is changed through the gravity of a human body, so that dust enters the cylinder body and the dust collecting box, and the problem that the dust below the sofa base is difficult to remove in the prior art is solved.

A negative electrode includes a negative electrode current collector and a negative electrode mixture layer disposed on the current collector, the negative electrode mixture layer including a carbon material and a Si-containing compound. The negative electrode mixture layer includes a lower layer (a first layer) disposed on the negative electrode current collector, and an upper layer (a second layer) disposed on the lower layer. The lower layer includes the carbon material, the Si-containing compound, and a first binder including a polyacrylic acid or a salt thereof. The upper layer includes the carbon material and a second binder. The mass of the lower layer is not less than 50 mass % and less than 90 mass % of the mass of the negative electrode mixture layer, and the mass of the upper layer is more than 10 mass % and not more than 50 mass % of the mass of the negative electrode mixture layer.

The invention discloses Eu-Gd-Dy trirare earth ion tantalate and a preparation method and an application thereof, the Eu-Gd-Dy trirare earth ion tantalate has the chemical general formula of EuaGdbDycTaO7, wherein a+b+c=3, and a, b and c is 0.8-1.2. The preparation method comprises the following steps: 1) according to the stoichiometric ratio, weighing europium chloride, gadolinium nitrate, dysprosium nitrate and tantalum oxalate, mechanically mixing with citric acid with a set amount under a heat-retaining condition, adding strong aqua ammonia in the mixing process to neutralize the solution,and then mechanically mixing to promote the process of the reaction under a heat-retaining condition; and 2) drying the obtained solution, then calcining at high temperature to remove carbon impurities, and thus obtaining an Eu-Gd-Dy trirare earth ion tantalate powder. The Eu-Gd-Dy trirare earth ion tantalate has the advantages of good high temperature thermal stability and low thermal conductivity coefficient, and can be used as a thermal barrier coating material.

The invention relates to an externally-engaged spherical gear pump which comprises a pump body (1), a male-tooth gear (2), a female-tooth gear (3), a driven shaft (4), a driving shaft (5), a rear pump cover (6), positioning pins (7), a bearing cover (8) and a front pump cover (9). The tooth shape of the male-tooth gear (2) is a convex spherical gear, and the tooth shape of the female-tooth gear (3) is a concave spherical gear engaged with the convex spherical gear of the male-tooth gear (2). The work tooth face of the male-tooth gear and the work tooth face of the female-tooth gear are a spherical convex-tooth gear profile and a spherical concave-tooth gear profile correspondingly, the volume change quantity of an oil absorption cavity is large, the circular arc radius of the convex-tooth gear profile is equal to that of the concave-tooth gear profile, therefore the gear tooth contact strength is high, the inter-tooth load is small, the output flow is large, flowing the pulse is small, noise is low, and steadiness of pump operation and the service life are both superior to those of a traditional gear pump adopting an involute gear profile.

The invention relates to a fuse cutter and a novel drop fuse, the novel drop fuse comprises a circuit breaker unit, Fuse, fuse cutter, includes a fuse cutter base, the substrate is provided with a through hole through which the fuse can pass, characterized in that an air cylinder is arranged on the left side of the base body, a piston, a cutting knife is arranged at the end of the piston, a cavitywhich can be moved by the cutting knife is arranged in the base body, a gas generator is also arranged at the bottom of the cylinder, the cutting knife and the base body are made of insulating material, and the gas generator is started by a starting unit. The invention has the advantages of simple structure, reliable operation and instantaneous circuit breakage.