99 results about "EVACUATED CONTAINER" patented technology

The light source, comprises an evacuated container having walls, including an outer glass layer (23) which on at least part thereof is coated on the inside with a layer of phosphor (24) forming a luminescent layer and a conductive layer (25) forming an anode. The phosphor (24) is excited to luminescence by electron bombardment from a field emission cathode (40) located in the interior of the container. The field emission cathode (40) comprises a carrier having a diameter in the mm range. At least a portion of the surface of the carrier is provided with a conductive layer having surface irregularities in the form of tips, having a radial extension being less than about 10 μm. Due to the geometry and the tips, the electric field is concentrated and amplified at the field emission surface.

A compact vacuum container includes a tangential air inlet at the upper portion, a closed top and a central outlet at the bottom having an improved air separation and dirt collection container is provided. A hollow central column with a skirt formed with a downwardly extending flange having an outer diameter is less than the inner diameter of the container, extends from the closed to the bottom outlet opening the upper position above the skirt is open and the lower portion of the column is solid. Dirt particles that separate from the air flow above the skirt drop to the lower portion below the skirt. Clean air then exits an open upper portion of the column to the suction source below the container. The air exiting the bottom of the column may pass through an radially pleated filter before being drawn into the vacuum source.

The invention relates to an experimental method applicable to a test of the adsorption-desorption deformation of a coal body under high temperature and high pressure. The experimental method is carried out by using a test system applicable to the adsorption-desorption deformation of a coal body under high temperature and high pressure, and the test system applicable to the adsorption-desorption deformation of a coal body under high temperature and high pressure comprises a vacuumizing system, a gas injection system, an adsorption-desorption deformation test system, and a gas metering system; the vacuumizing system comprises a vacuum pump and a vacuum container, the air inlet of the vacuum pump is connected to the air outlet of the vacuum container through a first air pipe, a first stop valve is arranged on the first air pipe, and the air inlet of the vacuum container is connected to a second air pipe. To sum up, the experimental method has the advantages of convenience in operation, low workload, quick and accurate measurement and high experimental performance, and provides experiment and theoretical research for adsorption-desorption volumetric deformation in the process of coal bed methane extraction.

A method of preparing and reconstituting a sterile, lyophilized pharmaceutical active for rapid reconstitution by evacuating a lyophilized pharmaceutical active-containing container until the pressure within the container is less than about 300 Torr and hermetically sealing the evacuated container. The sterile, lyophilized pharmaceutical active can be prepared by flash freezing a pharmaceutical active-containing composition then lyophilizing the composition. The hermetically sealed lyophilized pharmaceutical active can be reconstituted by adding at least the total volume of liquid necessary for reconstitution of the sterile, lyophilized pharmaceutical active to the sterile, lyophilized pharmaceutical active, sealed under a pressure of less than about 300 Torr, in less than about 10 seconds to yield, within about 5 minutes, an administrable pharmaceutical active-containing composition. One aspect of the herein described sterile, lyophilized pharmaceutical active is a packaged sterile pharmaceutical active comprising an evacuated, hermetically sealed container having disposed therein a sterile, lyophilized pharmaceutical active, sealed under a pressure of less than about 300 Torr.

The present invention provides a plasma processing apparatus for processing a sample on a sample stand in a vacuum container whose inside pressure is reduced, with a plasma generated in an upper space above the sample stand. The apparatus comprises: an electric discharge chamber disposed in the vacuum container and above the sample stand, and having a discharge-chamber sidewall surrounding the upper space; a vacuum chamber disposed in the vacuum container and below the electric discharge chamber, and in communication with the electric discharge chamber; a vacuum-chamber sidewall disposed inside the vacuum container to surround the sample stand, and constituting a side surface of the vacuum chamber; a first temperature regulator disposed outside the discharge-chamber sidewall to adjust a temperature of the discharge-chamber sidewall; and a second temperature regulator controlling a temperature of the vacuum-chamber sidewall to a value lower than the temperature of the discharge-chamber sidewall.

The purpose of this invention, which is referred to as a vacuustat, is to generate buoyancy in the atmosphere by means of an evacuated or partially evacuated container, rather than by using a lighter-than-air lifting gas such as hydrogen or helium. This particular vacuustat design comprises a flexible airtight membrane supported by a fractal tensegrity internal structure consisting of a relatively small mass of compressive members forced into higher-order buckling modes through use of tension members. The advantages of such a design over conventional aerostats include superior buoyancy control for ascent and descent, greatly increased flight endurance, and cost-effectiveness in operation. This particular vacuustat design has a much greater lifting efficiency than previous designs, and should also be easier and more cost-effective to manufacture.

A self-standing type bag-shaped vacuum container has a self-standing container including a wall formed of a soft sheet, a pouring port, and a check valve mounted in the pouring port. The check valve is opened to allow the migration of a content of the container when subjected to a pressure in the pouring direction, but is closed when subjected to a pressure in a filling direction, so that the inside of the container is evacuated. The self-standing container can be optimized for storing beverages or the like which are negatively effected by contact with air, because the content will be oxidized with the air. The vacuum type container will not lose its self-standing property even if the content is reduced, and can stand stably by itself.

A reduced-pressure steam heating device and a method for eliminating the banging noise generated therein as the heat carrier fluid is being heated. In the device, a heat carrier fluid sealed inside an evacuated container is heated to generate steam, the heat of which is used to heat the intended object. The heat carrier fluid is agitated and circulated as it is being heated to eliminate any banging noise.

A vacuum sealing appliance for lidded containers. A container is evacuated by placing a conventional container with a lid under a bell cover or by applying a special lid to an open container. An actuator assembly moves a valve to an sealed position and energizes an electrical vacuum pump. A vacuum switch and solenoid simultaneously terminate the operation of the vacuum pump and allow atmospheric pressure to be applied to the lid, thereby to seal the lid against the container.

The invention aims at providing a Mars wind tunnel with sand and dust simulation. The wind tunnel is horizontally arranged in a vacuum container and comprises a collector, a stable section, a contraction section, a test section, an ejector section, an outlet diffusion section, an ejector, and a first diffusion section. The test section is connected with the first diffusion section; the first diffusion section is connected with the ejector section; the ejector section is connected with the diffusion section, a transitional equal straight section is arranged between the ejector section and the diffusion section, and the ejector is arranged at the inlet of the ejector section. The diffusion angle of the first diffusion section is not more than 5 degrees, and the cross section area of the inlet of the ejector section is larger than that of the outlet of the test section. Compared with the prior art, simulation of the wind speed of 5-100 m/s in a large-span range can be achieved under the air pressure of 100 Pa only by consuming a small amount of air, the flow field of the test section is uniform and stable, and the sand and dust environment of the Mars can be simulated under the low air pressure.

A vacuum receptacle lid for easy sealing includes a lid body that closes and opens an inlet portion of a receptacle body provided with a space containing contents, and includes a valve installation hole formed at a part thereof, at least one air vent hole, and a packing installation groove which is opened downwardly in a C shape inside a rim thereof, a check valve that is provided a combining projection at a bottom surface of a body portion enclosing the air vent hole, is inserted into and combined with the valve installation hole, and exhausts air of the inside of the receptacle body via the air vent hole and blocks inflow of external air by enclosing, opening and closing the air vent hole, and a packing that is accommodated and installed at the packing installation groove, and includes an upper contact portion coming into contact with an upper surface of the packing installation groove, a lower contact portion coming into contact with the receptacle body, and an intermediate contact portion of which ends are connected to at least a part of the upper contact portion and the lower contact portion and which has a cross-section of a zigzag shape.

The invention provides a vacuum system for simulating a large dust distribution environment of the moon. A rough pumping system of the vacuum system is responsible for completing rough pumping of a container and establishing an initial basic vacuum environment; a low-temperature pump main pumping system of the high-vacuum unit is used for establishing and maintaining test pressure; a molecular pump auxiliary pumping system is used for auxiliary pumping of the cryopump and also serves as a leak detection system of the equipment; and a re-pressing system is used for recovering the vacuum environment in the vacuum container to the atmospheric environment, the vacuum valve system comprises a plurality of valves used for connecting and disconnecting a gas path, and the pipeline system comprises an exhaust pipeline, a water path system and a gas path system. The technical problem of how to design a set of vacuum system which is suitable for preventing dust particles from splashing and pollution under the condition of large cloth dust is solved. The system provides a vacuum environment for the lunar surface comprehensive environment simulator to carry out lunar surface multi-factor comprehensive environment effect tests such as vacuum, low temperature, electron irradiation, ultraviolet irradiation, X-ray irradiation, micron/submicron charged dust and the like.

An evacuated container assembly suitable for use in connection with blood collection including: (a) a container member formed of a first polymeric material and having a sidewall and one or more openings; (b) a nanocomposite barrier coating disposed on the container member having a thickness of up to about 30 microns and being derived from an aqueous dispersion including (i) a dispersed barrier matrix polymer; and (ii) a substantially exfoliated silicate filler having an aspect ratio of more than 50; and (c) one or more sealing members disposed in the opening(s) operative to hermetically seal the cavity; wherein the cavity is evacuated and maintains a pressure below atmospheric pressure and exhibits a draw volume loss lower than that of a like assembly without a nanocomposite barrier film by a factor of at least 1.5.

The invention discloses a method and a device to dismantle a component-carrying circuit board. The circuit board is horizontally arranged in a conveyor belt, conveyed by the conveyor belt to above an evacuated container; at the same time, a small conveyor belt is arranged slantways above the conveyor belt and is pressed on the circuit board; with the collaborated function of the friction force and vacuum absorption force of the conveyor belt and the gravity and the elasticity of the small conveyor belt, the conveyor belt is fastened onto the conveyor belt; symmetrical rolling knives are arranged above the evacuated container and the conveyor belt, and the components are separated from the circuit board after the component-carrying circuit board is cut by the symmetrical rolling knives. The invention is adapted to the different thickness of the board, the clamping of the circuit board is tight, and the cutting operation of the symmetrical rolling knives ensures the exactness of the cutting and disengaging direction, rapid speed, and high efficiency and recycles the metal powder without causing pollution.

An apparatus and method for dehydrating biological materials, such as vaccines and microorganism cultures, in which the materials are dehydrated in an evacuated container which is in a microwave waveguide that is open to the atmosphere. The apparatus comprises means for freezing the container of biological material, a microwave generator, a waveguide, means for introducing the container into the waveguide, means for applying a vacuum to the container and means for removing the dehydrated material from the waveguide. In the method of the invention, the container of biological material is put in a microwave waveguide open to the atmosphere, a vacuum is applied to the container, the material is frozen and is radiated to dehydrate it. The dehydrated material is then removed from the waveguide.

A cryostat comprises a cryogen vessel suspended within an outer vacuum container, the cryogen vessel is supported by an arrangement that includes at least one housing mounted on an exterior surface of the outer vacuum container and arranged to function as a floor mounting foot, for supporting weight of the cryogen vessel and the outer vacuum container, and at least two mounting points mounted within the housing(s). Each of at least two suspension elements (an upper suspension element and a lower suspension element) extends through a hole in the surface of the outer vacuum container, between the respective mounting point and a respective point on the cryogen vessel.

Ceramic nanopowder was sealed inside a metal container under a vacuum. The sealed evacuated container was forced through a severe deformation channel at an elevated temperature below the melting point of the ceramic nanopowder. The result was a dense nanocrystalline ceramic structure inside the metal container.

The invention discloses a device and a method for improving the local vacuum degree of a pulse wind tunnel. The device comprises a check ring, a bottom plate, a cover plate and a diaphragm. Under thecondition that the driving pressure is not changed, the vacuumizing capacity of a test section is improved, specifically, a diaphragm partition device is installed in a straight section of a vacuum tube, the test section and a vacuum container device are separated by the diaphragm partition device, and a bypass pipeline and a bypass valve are arranged in front of and behind the diaphragm partitiondevice; when a wind tunnel test is prepared, firstly, the bypass valve is opened, the test section, the vacuum tube straight section and the vacuum container device are communicated, and a vacuum unit is started to vacuumize gas in a relatively large volume space to the required vacuum requirement. The ratio of the driving pressure to the vacuum environment pressure of the test section is greatlyimproved, so that the effect of improving the wind tunnel driving capacity is achieved, and the problem that the arrangement of an existing vacuum unit and test section, a vacuum tube straight section and a vacuum container device cannot meet the use requirements is solved.

A breath testing apparatus is provided with a mouthpiece, a collection chamber, and a discharge chute. A breath sample is captured within the collection chamber and transferred to an evacuated container through the discharge chute by a sample transfer assembly.