9888 results about "Closed space" patented technology

A self-inflating and self-deflating orally ingestible device that is able to traverse the entirety of the alimentary canal is described. In one embodiment, the device includes a closed balloon having a surface separating an enclosed space internal to the balloon from a space external to the balloon, at least one self-sealing valve integrated with the surface of the balloon to provide access to the enclosed space internal to the balloon from the space external to the balloon, a vent comprised of a dissolvable seal integrated with the surface of the balloon, and a vessel located within the enclosed space internal to the balloon to separate internal contents of the vessel from the enclosed space internal to the balloon.

A system includes an enclosed space defining a controllable environment chamber. The system also includes at least one monitoring device configured to measure multiple characteristics of an environment within the chamber. The system further includes multiple actuators configured to alter the characteristics of the environment within the chamber. The enclosed space includes at least one rack system configured to be placed within the enclosed space. Each rack system includes multiple layers configured to receive multiple plants to be grown in the chamber. The actuators are configured to adjust the characteristics of the environment within the chamber to condition the environment based on the plants to be grown in the chamber.

A container and closure assembly includes a container defining an opening and having a lip positioned around the opening. The assembly also includes a closure configured to be attached to the container. The closure includes a top portion defining a circular periphery, and a first skirt portion extending downwardly from the circular periphery to form a cylindrical structure defining a first internal closure space. The closure also includes a second skirt portion extending downwardly from a first part of the cylindrical structure. The second skirt portion has a first side edge and a second side edge that form a gap. A tab extends downwardly from a second part of the cylindrical structure and is positioned in the gap. A first vertex segment is attached to the second skirt portion, and a second vertex segment is attached to the tab.

A method for removal of deposition on a radiation collector of a lithographic apparatus includes providing a gas barrier to an end of a radiation collector, thereby providing a radiation collector enclosure volume; providing a gas to the enclosure volume, the gas selected from a halogen containing gas and a hydrogen containing gas; and removing at least part of the deposition from the radiation collector. A lithographic apparatus includes a radiation collector; a circumferential hull enclosing the radiation collector; a gas barrier at an end of the radiation collector, thereby providing a radiation collector enclosure volume. The radiation collector is enclosed by the circumferential hull and the gas barrier. An inlet provides a gas to the radiation collector enclosure volume and an outlet removes a gas from the radiation collector enclosure volume.

Embodiments of a drone for inspection and a method of use are depicted wherein the drone is utilized in an enclosed space and is capable of being controlled with or without line of sight to the aircraft. The drone may land on generally horizontal or vertical surfaces. A method of use is taught as well.

The invention relates to the technical field of oil and gas well production increase and fracturing operation, in particular to a horizontal well hydraulic directional spraying gun. The horizontal well hydraulic directional spraying gun comprises a directional split tooth cylinder, an enveloping line sleeve, a directional steel ball, thrust bearings and nozzles. The directional split tooth cylinder and an upper connector form an annular space, a reset spring is arranged in the annular space, the right end of the upper connector is connected with an upper housing, the enveloping line sleeve issleeved with the interior of the upper housing, a central rod penetrates through the interior of the enveloping line sleeve to be connected to an internal thread at the right end of the directional split tooth cylinder, and a closed space is defined by the upper housing, the directional split cylinder and the enveloping line sleeve; the directional steel ball is placed in the closed space, the right end of the upper housing is in threaded connection with a connecting sleeve, the thrust bearings are symmetrically disposed at both ends of the connecting sleeve, and the right end of the enveloping line sleeve is connected with a spraying gun casing. Forced orientation of the spraying gun casing can be achieved by a hydraulic driving mode, the orientation success rate is high, tools can be reused after maintenance and protection, and the cost is low.

A fragrance release system having a substantially rotationally symmetric container having a chamber accommodating a multitude of particles for deodorizing or fragrancing an open or closed space, the particles comprising a carrier material and at least one fragrance, and the container having a plurality of orifices through which emission of the fragrances of the particles from the accommodation chamber outward is possible, wherein the accommodation chamber (3) of the substantially rotationally symmetric container (2) has a crescent-like cross-sectional shape with a convex front wall (5) and a concave back wall (6).

The invention discloses a ventilation device, which aims to solve the problem that the conventional ventilation device does not have an air adjusting function. The device comprises a pedestal, a high-speed air blower and an annular ejector, wherein the high-speed air blower is arranged at the bottom of the pedestal; the annular ejector is arranged at an air outlet of the high-speed air blower and is fixed on the pedestal; and the air inlet or the air outlet of the high-speed air blower is provided with a vapor generator which is fixed on the pedestal for producing water vapor. In the ventilation device, the water vapor is produced through the vapor generator and is ejected through an atomization nozzle at a high speed to produce fog of smaller granularity, so that a hot air flow can more easily absorb the latent heat of vaporization, and the ventilation device has a humidification effect and a heat absorption and temperature reduction effect on a large amount of hot air sucked by the annular nozzle, and brings comfortable cool air similar to air on the shore of a lake or a sea to the surrounding environment. In the ventilation device, an external circulating device is not required to be mounted, so the cost is low; the space is not required to be closed, so that air convection is guaranteed; and the ventilation device is more energy-saving in the same temperature reduction range compared with a fan and an air conditioner, and can be used conveniently and safely.

An extrusion-molding machine according to the present invention comprises: a screw having a blade portion for extruding a molding material, the screw disposed in a tightly-closed space; and a die for molding an extruded molding material, wherein the space is maintained in a reduced-pressure atmosphere, and a high-hardness coat layer is formed at least on the blade portion.

On-board ILS sensors for detecting illegal drugs and based on intracavity laser spectroscopy (ILS) are provided for detecting the presence of drugs and their metabolized by-product vapors in an enclosed space, such as a vehicle. The sensor comprises: (a) a laser comprising a gain medium having two opposed facets within a laser resonator and functioning as an intracavity spectroscopic device having a first end and a second end, the first end operatively associated with a partially reflecting (i.e., partially transmitting) surface; (b) a reflective or dispersive optical element (e.g., a mirror or a diffraction grating) operatively associated with the second end to define a broadband wavelength laser resonator between the optical element and the first end and to thereby define an external cavity region between at least one facet of the gain medium and either the first end or the second end or both ends; (c) the external cavity region being exposed to air in the enclosed space to enable any drugs or their metabolized by-product molecules to enter thereinto; (d) a detector spaced from the first end; (e) appropriate electronics for measuring and analyzing the detector signal; (f) a housing for containing at least the laser, the partially reflecting surface, and the optical element, the housing being configured to prevent escape of stray radiation into the enclosed space and to permit air from the enclosed space to continuously circulate through the external cavity region for analysis; and (g) means for driving the laser (e.g., electrical or optical). A method is provided for measuring concentration of drug vapors and their metabolized by-product vapors in the vehicle or other enclosed space employing the on-board sensor. The method comprises: (1) sensing any drugs and their metabolized by-product vapors in the enclosed space by the on-board sensor; and (2) providing a signal indicative of presence of any drugs or metabolized vapors.

Disclosed is a swallowable self-expanding gastric space occupying device and related methods of making and using the device to control obesity. The device has a membrane through which gastric liquid can pass, wherein the membrane provides an enclosure volume separated from the gastric environment by the membrane. A plurality of self-expanding components is contained in the enclosure volume, so that the components expand in volume upon contact with the gastric fluid, thereby expanding the device from an unexpanded volume to an expanded volume. Composite membranes provide the ability to precisely control how and when the membrane degrades in the stomach, to release the self-expanding components from the enclosure and to ensure that the released pieces are sufficiently small to not obstruct any portion of the gastrointestinal system.

A trash can with function of sucking litterbags having a plurality of intake hole arranged surrounding the lower part or bottom side thereof. The intake holes are connected to a closed space with an air pump therein for expelling air into a vacuum status so as to make the litterbag inside be sucked by the intake holes. When a litterbag is disposed into the trash can, the opening of the litterbag is arranged on the edge of the opening of the trash can. Then the bottom of the litterbag is pressed down to the bottom of the trash can and the air pump is turned on to make the intake holes adsorb the litterbag. Thus the litterbag is spread out completely on the bottom of the trash can so that the disposition of the litterbag is simplified and the litterbag is set down more properly.

Air moving device includes a housing, an impeller in the housing for generating a downward air flow, and vanes in the housing in close proximity to and a selected distance below the impeller to straighten the air flow. The device produces an air flow that substantially remains in a column over a substantial distance. The method includes producing an air flow that substantially remains in a column over a substantial distance and directing the air flow from the ceiling towards the floor to provide temperature destratification of the air in an enclosed space. The method also includes directing warm air from the ceiling to the floor and storing heat in the floor, apparatus on the floor and ground under the floor. The stored heat is released when the ceiling is cooler than the floor.

A stationary dryer, useful as a clothes dryer, is provided comprising a housing enclosing a space and a stationary clothes support located within the space. An air moving device is provided for generating an air flow through the space from an air inlet to an air outlet. An air distributor mechanism comprising a distribution plenum is positioned between the air inlet and the clothes support, with a plenum wall having a plurality of perforations therein. The perforations are sized, shaped and arranged so as to provide jets of air against the clothes support and to equalize an air flow distribution over the clothes support.

The present invention provides an assembly comprising a skin-mountable device (10) with an adhesive mounting surface (31), the device being arranged in a packaging (20) comprising an opening with a surrounding portion and being closed with a seal member (40) releasably attached to the surrounding portion (22), thereby providing a closed space for the device. The seal member has an inner surface releasably attached to the adhesive, the seal member being penetratable by a sterilizing gas, wherein the inner surface is partially coated with a material (42, 44) allowing the seal member to be peeled from the adhesive, yet allows the sterilizing gas to penetrate the seal member. In this way a seal member is provided which to a high degree has two desirable properties: being gas penetratable yet allows the seal member to be peeled from the adhesive surface.

A system for suppressing fire in an enclosed space, e.g. an aircraft cabin or freight compartment, includes nitrogen tanks and/or generators to rapidly supply a limited quantity of nitrogen with a high flow rate, and a membrane system to supply an essentially unlimited quantity of nitrogen at a lower supply rate for a long duration. The membrane system includes a selectively permeable membrane that separates nitrogen gas from ambient environmental air that is supplied into the membrane system. Once a fire is detected, nitrogen is supplied from the nitrogen gas tanks and/or generators at a high rate to rapidly increase the nitrogen concentration and establish a reduced oxygen concentration (e.g. 12 vol. %) in the enclosed space. Then, nitrogen is supplied from the membrane system at a reduced rate for a long duration to maintain the reduced oxygen concentration in the enclosed space until the fire is extinguished by oxygen starvation.

The invention relates to a method for preparing an antibacterial air-filtering membrane. The method comprises the following steps of: co-mixing and dissolving an antibacterial agent, a polymer, an addition agent and a solvent and obtaining a stable co-mixed solution; or obtaining a uniform fusant through fusing and co-mixing the antibacterial agent and the polymer; and then weaving nanofibers of the co-mixed solution or the fusant on the surface of a non-woven fabric through electrostatic spinning and obtaining the antibacterial air-filtering membrane. The preparation method provided by the invention has the advantages of simplicity, low cost, low requirement for equipment and suitability for scale production; and the product prepared by the method has good long-term antibacterial capability and can be applied to closed spaces with concentrated personnel, such as hospitals, stations and the like and can also be applied to places with lower requirements, such as ordinary families and the like.