Abstract: A self-contained and ventilated temporary shelter includes a first module, a second module and an air purification system. The first module defines a first temporary living space. The second module defines a second temporary living space. The air purification system is in fluid communication with the first temporary living space and provides a source of filtered air to the first temporary living space. The second module is in fluid communication with the first module such that the source of filtered air passes from the first temporary living space to the second temporary living space. The air purification system generates a positive airflow through the first and second temporary living spaces.

Abstract: A protective cover for child carriers having a rigid, concave shell is configured to shield the child from projectiles such as balls, rocks, and the like. The shell also comprises a plurality of openings that are dimensioned to permit air to flow freely therethrough while the cover shields the child from projectiles. The cover also comprises at least one attachment device which is adapted to detachably affix the cover to most conventional child carriers.

Abstract: Disclosed is an apparatus for opening/closing a ventilation window of a tent. The apparatus has a fastener for opening/closing the ventilation window for ventilating an inner space of the tent by assembling/disassembling combining members with each other, a hole formed on a body of the fastener, an opening rope of which one end is tied up to the hole, and a closing rope of which one end is tied up to a connection hole formed on a knob combined to a long hole formed on the body of the fastener. The ventilation window is opened as the opening rope is pulled, and closed as the closing rope is pulled. Thus, there is no inconvenience in opening/closing the ventilation window as the user can open/close the ventilation window while he/she sits down on the floor of the tent.

Abstract: A large temporary shelter designed to act as a communication, maintenance, and warehouse facility in all types of climate and terrain. The shelter is engineered for durability, portability, repetitive assembly and disassembly. The shelter includes a plurality of lightweight structural arched frame supports that are easy to assemble and connect to a lightweight, rectangular-shaped base frame temporarily attached to the ground. The shelter also includes a durable outer cover and an inner liner that extends over the outside and inside surfaces of the arched frame supports. The outer cover and inner linings are spaced apart to create duct spaces between the arched frame supports for heating air conditioning. A central attic space is created between the outer cover and the inner linings which creates a large central air space for greater insulation. Formed on one end of the shelter are at least one personnel door and two double-hinged vehicle doors.

Abstract: A covered vent for a tent or canopy consisting of a series of cutouts along the ridge line of a canopy and having a screen fastened to cover the cutouts, a flap fastened to the canopy at one side by stitching and covering the cutouts, and having a series of ties fastened along the length of the second side of the flap, the ties being fastened to the canopy to provide a limited opening to permit air flow when large gusts of air are present and closing when the air gusts are diminished.

Abstract: A modulator transportable collective protection system for the decontamination and containment of personnel in a toxic free area. A contamination containment area is provided through which personnel are decontaminated prior to entering the toxic free area. The migration of contaminants is prevented by causing a purge of clean filtered air from the toxic free area to the contamination control area and to the exterior environment. A blower and filter unit provides air to the toxic free area to maintain an over pressure therein, ensuring that all entry to the toxic free area is through a flow of clean air.

Abstract: A modulator transportable collective protection system for the decontamination and containment of personnel in a toxic free area. A contamination containment area is provided through which personnel are decontaminated prior to entering the toxic free area. The migration of contaminants is prevented by causing a purge of clean filtered air from the toxic free area to the contamination control area and to the exterior environment. A blower and filter unit provides air to the toxic free area to maintain an over pressure therein, ensuring that all entry to the toxic free area is through a flow of clean air.

Abstract: A modulator transportable collective protection system for the decontamination and containment of personnel in a toxic free area. A contamination containment area is provided through which personnel are decontaminated prior to entering the toxic free area. The migration of contaminants is prevented by causing a purge of clean filtered air from the toxic free area to the contamination control area and to the exterior environment. A blower and filter unit provides air to the toxic free area to maintain an over pressure therein, ensuring that all entry to the toxic free area is through a flow of clean air.

Abstract: A vent enabling passage of air through a flexible cover such as those used to cover a boat, automobile, truck payload, stored materials at industrial sites, retail outlet outlets and the like. More specifically, the vent is of one piece unitary construction and includes an annular base secured to the flexible cover by adhesive or other conventional securing structure with the base including a central opening aligned with an opening in the flexible cover. The vent further includes a dome shaped louvered cover hingedly connected to the base and oriented in overlying relation to the base with the louvers enabling air passage through the cover and base for circulation of air in relation to the space covered by the flexible cover on which the vent is mounted. A retaining wall extends inwardly and upwardly from the base around the central opening to prevent water from entering the opening.

Abstract: An electric fan with mounted light (6) mounted overhead within a square dome camping tent (1). The fan/light unit is supported by a series of fiberglass poles (12), and pole footings (10). The fan/light unit is powered by a portable power supply and control unit (7) which contains power switches (23), an updraft/downdraft switch (24), an accessory plug (25), and a charger plug (27).

Abstract: A modular transportable collective protection system for the decontamination and containment of personnel in a toxic free area. A contamination containment area is provided through which personnel are decontaminated prior to entering the toxic free area. The migration of contaminants is prevented by causing a purge of clean filtered air from the toxic free area to the contamination control area and to the exterior environment. A blower and filter unit provides air to the toxic free area to maintain an over pressure therein, ensuring that all entry to the toxic free area is through a flow of clean air.

Abstract: A portable shelter includes a frame having front and back arches joined by two skids at their bottom ends and a set of braces extending between the arches. A cover over the frame has a water impervious top panel and end and back panels that are an air pervious mesh. The shelter is particularly useful in sporting installations, for example golf driving ranges.

Abstract: A tent having a fabric body defining an internal volume and a door for entering and exiting the internal volume and for providing ventilation to the internal volume. A continuous zipper is located on the periphery of the door and on the door opening. A pair of zipper slides is configured for traversing the continuous zipper enabling the door to completely open, completely close and open partially in any one of a number of orientations.

Abstract: An isolation device has a movable frame and a barrier mounted on the frame. The barrier partially encloses a space to be occupied by a patient. The device also includes an air conducting unit having a primary duct attached to the barrier such that air can be conducted between the partially enclosed space and an outside location through the primary duct. Attached to the primary duct is a means for moving air between the partially enclosed space and the outside location.The present invention also includes a method of isolating a patient that begins by providing an isolating device according to the present invention. Air is conducted between the partially enclosed space and the outside location through the primary duct using the means for moving air, and a patient is positioned in the partially enclosed space.

Abstract: An air supported play structure that may be configured into a large variety of forms and shapes. An expanse of air-permeable fabric is weighted around its edges, and the fabric is supported above a surface by a stream of air supplied by a fan. A plurality of connectors are attached to the fabric, and those connectors are arranged to allow any one connector to be secured to another connector. The geometric configuration of the play structure is altered by changing the position of the edge weights, and by selecting the connectors to be secured one to another.

Abstract: A textile material having thermal image masking or suppression in the mid and far infra-red region without compromising the effectiveness of visual and near IR camouflage or comfort level, or the effectiveness, and mobility of a person. Specifically the invention is directed to an air permeable, moisture vapor transmissive, waterproof, heat reflecting material consisting essentially of at least one metallized microporous membrane, with an oleophobic coating over the metallized portions thereof. This membrane is laminated to at least one other layer or textile backing material such as woven, nonwoven or knitted nylon, polyester, cotton, silk, etc. or additional microporous layers, in which the metal in the metallized membrane forms a discontinuous layer on the surface and on the pore walls adjacent the surface of the microporous membrane.

Abstract: A portable bivouac shelter (10) is provided having an end pole (48) retaining on the top sheet (12) through a tunnel (46) for holding the top sheet (12) in a taught and semi-circular configuration. This permits the top sheet (12) to be held away from the bottom sheet (14) in an open configuration for enhanced ventilation. A top pole (54) is also provided across the top sheet 12 near the head end (20). The top pole (54) cooperates with the flexible end pole (48) to form a sloped roof over a user's head and to hold the top and bottom sheets (12) and (14) in a selected degree of an open configuration. Optional mounting snaps (62) in the interior (24) of the enclosure (18) enable a user to reconfigure the opening (26) without leaving the interior (24) of the shelter (10). The shelter (10) thus provides enhanced ventilation while the sloped roof formed by the top pole (54) prevents the entry of precipitation into the enclosure (18). Optional mosquito netting (32) is zippered on the interior of the opening (26).

Abstract: A shade assembly engagable with a vehicle of a type including a body bounding a compartment for accommodating occupants, the shade assembly comprising a canopy, a support structure coupled with the canopy, a support member operably coupled with the support structure for moving the support structure from a first position to a second position for moving the canopy from a closed position to an open position, and an engagement mechanism for detachably engaging the support member with the body of the vehicle, the canopy to extend outwardly from the support member in the open position to substantially shade the compartment of the vehicle exteriorly of the compartment.

Abstract: A tent has an elongate shell of limp material and a pair of self-erecting frames movable between an erect configuration in which the frames are capable of supporting the shell to define an interior space of the shell and a collapsed configuration in which the shell is compacted and stored in a storage bag. Each of the self-erecting frames comprises a plurality of frame members having an upper end and a lower end. A connecting system connects the upper ends of the frame members and biases the lower ends of the frame members apart to move the frame to its erect configuration. The frame members are movable against the bias of the connecting system to move the frame from its erect configuration to its collapsed configuration. In another embodiment, a portion of the shell comprises a mesh window panel to permit air flow in and out of the interior space of the tent. A window flap is connected to the shell adjacent the window panel for covering the window panel.

Abstract: A tent has a two-ply door having an air venting fabric as a first ply and a waterproof fabric as a second ply. On the waterproof fabric, a continuous zipper which defines a c-shaped arcuate path is formed. The zipper starts at a side of the tent door and ends at the same side. Zipper slides are mounted on the zipper path, such that a pair of consecutively positioned zipper slides unzips the waterproof fabric to allow ventilation through the air venting fabric when the pair slides towards one another and zips the waterproof fabric to close off ventilation when the pair slides away from each other. Operation of a first of the pair provides ventilation through the top of the air venting fabric and operation of the other provides ventilation through the bottom of the air venting fabric.

Abstract: A hunters ground blind including a frame portion. Further provided is cover system dimensioned for extending over the frame portion. Situated on the cover is a front window with a plurality of vertical strips and a penetrateable screen removably coupled thereover. Also included is a pair of inverted L-shaped slots formed in the cover system which are each adapted to allow the selective opening thereof when hunting various game.

Abstract: A one-piece air circulation vent for piercing and maintaining a ventilation opening in a flexible cover or the like. The vent includes a stiff, but resilient body structure which comprises a main panel member generally triangular in plan and defining convergent side edges and an apex facing in the forward direction. The main panel member is arched transversely of the forward direction and has a generally V-shaped slot formed therein including convergent legs generally paralleling the convergent side edges of the panel member. The V-shaped slot defines the main panel into a generally triangular central cutting section and a peripheral retaining section. The side edges of the central section converge toward a sharpened apex inward of the apex of the panel member. The central section with its sharpened apex is slightly deflectable relative to the remainder of the panel member. The rear of the body structure has a louvered rear panel to allow air circulation into and out from underneath the cover.

Abstract: A portable and disposable operating environment including at least one substantially flexible material panel which is removably secured to a rigid support so as to define and drape over an operating area. The portable and disposable operating environment also includes at least one flow through passage which is structured to receive a supply of purified air therein and direct it into the operating area defined by the flexible material panel. The purified air is structured to continuously flow into at least one flow through passage defined in the flexible material panel so that there is continuous sterile air circulation within the operating area defined thereby.

Abstract: A deployable flexible walled enclosure for housing people in the event of a serious air quality degradation is provided. A pressurized enclosure, either stored in a permanent location or transportable to a selected site, includes an air supply system for filtering and subsequently supplying clean air to the interior of the enclosure. The structure is compactly packaged when not in use and is capable of being deployable and/or activated from a remote control station in time of need. A small cache of life support elements are stored in the predeployed enclosure for use as needed upon deployment.

Abstract: An inflatable; convertible shelter and flotation device used for long distance hiking and camping expeditions. Cocoon is constructed of canvas and nylon. The canvas floor base is rubberized to allow for water proofing and air containment. A nylon lining is attached to the canvas and is held in place by Velcro strips. When used as a tent Cocoon's nylon lining is unfastened to form a wedge shaped tent. The canvas base can be inflated for insulation and sleeping comfort. When used as a flotation device the canvas base with three independently inflated air panels provide buoyancy for traversing rivers and lakes. Each inflatable panel contains air tight cells of different lengths. Grommets are secured at the end of each cell and provide openings for rope to be drawn through. Grommets and rope allows a gathering together of air-cell ends. A gathering together of each end of the inflated panels allows the base to form a tubular shape.

Abstract: A waterproof vehicle or equipment cover with passive barometric air-pump is disclosed and is characterized as having a flexible, fluid impervious first layer of material, a flexible, porous second layer of material sized to generally correspond to the first layer of material and attached thereto at the perimeter of the second layer to create an enclosed void defined by the first layer and the second layer, and a plurality of flexible tubes, each tube having a first open end and a second open end, and having a plurality of apertures defined thereby, wherein each tube is located in the void, in spaced apart relation, to thereby permit ingress of gaseous fluid from the first end of each tube to the void and egress of gaseous fluid from the void to the second end of each tube.

Abstract: The present invention provides a means for secondary containment of airbo releases from underground storage tanks, trenches, cribs, and vaults. Airborne releases of nuclear waste from previously operated nuclear weapons plants is a particular problem which this invention addresses. The dome structure is fabricated by large inflatable fabric forms that are insulated and hardened by specialized shotcrete processes for either spherical or elliptical type dome structure. This dome structure is designed to be reused and thus made mobile by having at least three large capacity crawler/transporters or a crane link-up and lift the dome structure for transport to a desired HTRW location. The dome structure is made of layered materials comprising a thin flexible membrane of urethane foam and conventional shotcrete placed on steel reinforcing bars.

Abstract: The invention relates to a method of establishing and maintaining in sealed tents or the like mobile units, an environment which is independent of the surroundings with regard to temperature and contamination. The invention is characterized by taking air from the surroundings, extracting contaminated particles and gas from the air by filtration, and causing the air to pass into the mobile unit so as to establish a predetermined air pressure which is higher than the air pressure of the surroundings. The filtered air is mixed with air recycled from within the mobile unit when the aforesaid predetermined air pressure has been reached and mixing of the filtered air with recycled air is continued for as long as the internal air pressure is equal to or greater than the predetermined air pressure. The air mixture is heated or cooled to a predetermined temperature and is then distributed essentially uniformly in the mobile unit and filtered, in conjunction therewith, so as to extract any remaining particles and gas.

Abstract: A portable clean air isolation enclosure which includes a collapsible enclosure, that has a top mounted inflatable plenum chamber, connected to a source of filtered air, and with peripheral curtains sealed at the bottom to the floor, to provide a positive or negative pressured sterile or dust free environment, which enclosure can be moved through normal doorways, set up and operated by one person.

Abstract: A drive-through dust hood assembly for transit mix trucks is provided by a pair of side curtains that are pivotally mounted on a top closure panel and which cooperate to close about the end of a truck and the mouth of the mixer drum to capture any dust created by filling thereof. The side curtains may be pivoted from the closed positon to an extended position for easy transit mix truck access when not exhausting dust. The side curtains of the closure are made of flexible sheet material that will conform to the irregular size and shape of various style trucks, so that filling dust does not escape to the ambient air. The exhausted dust is captured in a bag house or other suitable filtration facility for reuse or subsequent disposal. Swinging curtain closures are used for the back of the truck to permit efficient closing of the back area while allowing easy pivoting of the curtains should the truck not fully clear the open assembly.

Abstract: A portable enclosure which is suitable for use as a portable bus stop or the like and includes a frame constructed of plastic pipe, a canopy covering the top and bottom portions of the frame and a clear plastic window area located in the center section of the frame between the canopy segments, for viewing purposes. The portable enclosure is fitted with a pair of wheels and a handle positioned above the wheels for transportation purposes and includes a door for ingress and egress and a seat for accommodating the occupant or occupants.

Abstract: A pair of similarly transversely bowed and superposed panel members are secured together and are V-shaped in plan. The apex portion of one panel member disposed to the concave side of the other panel member is sharpened and the panel members are secured together along their base edge portions with the remaining portions of the panel members disposed in slightly spaced apart relation. The opposing surfaces of the spaced apart portions of the panel members include coacting projections for frictionally clampingly engaging the portion of a flexible cover disposed to one side of a slit formed in the cover through which the aforementioned one panel member extends.

Abstract: A ventilating system for a tepee includes an uppermost portion of a wall of a tepee, a substantially horizontally disposed opening defined by a top of the uppermost portion, a support disposed above a center of the opening, and a cone-shaped cap having a vertex, a base and a pivot point located on a top side of the wall, wherein the pivot point is rotatably supported by the support and wherein a bottommost portion of the base, opposite from the pivot point, rests on an outer annular surface of the uppermost portion, such that the cap is rotatable about the support.

Abstract: A solar heated sauna comprises a semicircular section of transparent or smoked rigid plastic which is positionable over a lounge chair, beach blanket, or the like. A user reclines under the sauna on the chair or blanket, and ventilation holes, as well as pivotally connected flaps, are provided for adjusting the amount of ventilation. The design of the invention further includes side positioned holes which can be utilized as handles.

Abstract: This invention relates to shelters which are readily adaptable in size and configuration to define an environment, preferably about plants, to control the amount of radiation, humidity, temperature and ventilation and to inhibit intrusion into the defined environment by deleterious vectors such as insects, unwanted microorganisms, weed seeds and the like.

Abstract: A tent comprises a shell including a floor and a canopy secured together. The floor and canopy are separably joined along a substantially U-shaped perimeter section to provide a door opening. The tent has a frame including an arch with its ends supported adjacent the ends of the door opening and extending across the tent to support the canopy above the floor. The arch is pivotable from a closed condition of the tent in which the floor and canopy meet along the U-shaped door opening and an open position in which the canopy is drawn up and away from the floor to permit access to the tent. The frame may also include two longitudinally oriented bowed supports supporting the canopy above the floor. The tent may, for cold weather use, include an insulating liner suspended from the frame and spaced from the canopy. The liner is preferably air pervious at a head end of the tent and impervious at a foot end of the tent. The canopy is then made with a breathing section at the head end.

Abstract: A controlled access enclosure comprises an external frame (1) within which is suspended a cover (15). Access is gained to and from the unit by means of a zipped opening (20) in one part of the enclosure and a flap door arrangement in another part of the enclosure, the flap door being surrounded by a flange (21) which may be sealed to a hazardous working area to prevent contamination escaping from the working area into the surrounding clean environment.

Abstract: The inventive Quonset-type pipe-frame greenhouse is constructed with: a plurality of main rib members each in a semicircular or inverted U-shaped form erected on the ground in parallel with each other and connected together with at least one longitudinal connecting member to form a main room; a plurality of auxiliary rib members each straddling on the ridge line of the main room and connected together with at least one auxiliary longitudinal connecting member to form a monitor roof-like protrusion; and transparent sheet members of a plastic resin for the walls of the main room and the monitor roof-like protrusion each capable of being turned up at the lower end to make an opening for ventilation according to need. The inventive greenhouse is advantageous in the improved ventilation in the upper part of the room to assist healthy growth of the plants and in the improved aerodynamic strength of the structure capable of resisting a strong wind without the danger of falling down.

Abstract: A portable tent construction in which an outer tent of see-through "mosquito net-like" material completely encloses an inner waterproof weather tent which can be erected by the occupant from within the outer tent without the inconvenient necessity of exiting the tent. Implementation is uncomplicated and may be partially or totally completed as desired.

Abstract: A collapsible supporting frame structure for portable shelters which includes a plurality of radially extending pivoted legs having their upper ends pivotally connected with an upper supporting ring and intermediate portions having a pivotal link connection with a lower supporting structure and a hollow slide member with its lower end fixed to the lower supporting structure and slidably mounted through said upper ring, whereby the raising of the hollow slide member through the upper ring causes radial expansion of the supporting leg structure into outwardly spaced, ground-engaging position and including the extension of said hollow member upwardly through said ring to provide a smoke stack for the area confined under the supporting leg structure.

Abstract: The present invention relates to a protective entranceway contained in the outer door of a van, trailer or other shelter means. In one mode our device takes the form of a door operable about a vertical hinge line, and although thicker than an ordinary door, it serves in the manner of an ordinary door to provide closure for the shelter means at such time as no contamination is present. A platform is contained on the outer portion of our door, which is enabled to swing downwardly at the time of a contamination alert. A canopy that had been contained in the door in a folded condition is caused by downward movement of the platform to deploy and form a closed entranceway serving in a second mode of use to prevent contaminated air from entering the shelter means.

Abstract: An arrangement for camouflaging military targets in the spectral range of electromagnetic radiation from ultraviolet light to radar waves by contrast reduction between target and background. Emission and/or remission contrast of the target towards the natural background is reduced by applying camouflaging nets which are provided with a specially cut garnishing made of a compound texture in which each single layer affects part of the total electromagnetic spectrum. The layers are arranged so that the camouflaging effect of a single layer does not destroy the others. The reduction of the temperature contrast between target and background of warm or hot targets is achieved by means of heat-reduction carpets. The reduction of temperature contrast of objects currently producing heat is achieved by additionally blowing off hot gases that are surrounded by laminar flows of cold air in special channels where warming up of the camouflaging set-up itself by the hot gases is avoided.

Abstract: A ventilator for a boat mooring cover or the like including a support plate on the underside of the cover and a cover plate on the outer side of the cover. The support plate and cover each include passages therein in fluid communication with each other and with an aperture provided in the cover. An extensible and retractible support is provided for adjustably positioning the ventilator at different levels. The support plate includes an annular groove while the cover plate includes an annular detent or clamping rib which cooperates with the groove in the support plate to pinch and displace a portion of the cover therebetween to attach the ventilator to the cover.

Abstract: The invention is a scent-free wildlife blind. The blind has a room-like shelter having a door, a plurality of windows, a small vent near ground level, and a flexible tube extending from the top of the shelter to a height of approximately 30 feet from the ground. When the wind hits the shelter, the windspeed will be higher at the top of the tube than at the bottom vent. The pressure exerted by the wind on the air inside the shelter is inversely proportional to the wind speed. Therefore, the pressure difference will force air in through the bottom vent and out through the top of the tube, carrying the scent of the occupants out of the blind high enough so that nearby animals will not smell the occupants.