Abstract: A desktop-type ventilation system generally includes a ventilation hub having at least one vent and at least one fume hood connected thereto. The fume hood(s) generally include a pair of side walls, wherein each is disposed at an angle for directing and causing air to be funneled toward the vent. The fume hood(s) include a front wall defining an inlet orifice, a rear wall having an outlet orifice for connection to the vent, and a top wall disposed at an angle of elevation from the rear wall to the front wall. The front wall is detachably securable to the side walls and the top wall such that the fume hood(s) may be broken down after use and nested for storage. The ventilation hub may detachably secure to a work surface such that it may be removed therefrom and conveniently stored when not in use.

Abstract: An air duct outlet includes a housing having spaced-apart top and bottom walls, and spaced-apart first and second side walls extending between the top and bottom walls to define an air passageway having an inlet and outlet. A first air return passageway is located adjacent to the first side wall, and diverts a portion of an air stream flowing through the air passageway as the air stream adheres to the first side wall. A second air return passageway is located adjacent to the second side wall, and diverts a portion of an air stream flowing through the air passageway as the air stream adheres to the second side wall. The continuous diversion of portions of an air stream flowing through the air passageway by the first and second air return passageways causes an oscillating, sweeping motion of the air stream as it exits from the air passageway outlet.

Abstract: A roof ridge vent formed from a continuous, indeterminate-length, elongate strip of openwork material that has a pair of longitudinally-extending side edges each covered with a waterproof material. The edge coverings function as wind baffles and promote air circulation through the vent when wind blows over the roof ridge. The ridge vent is rollable lengthwise into a spiral roll for storage and shipment and is unrolled lengthwise during installation on a roof ridge.

Abstract: A screen device is disclosed for attaching to, or making an overhead or roll-up door, one example being a garage door. The device is disclosed as an apparatus that is installed as a single or multiple units within or attached to a door, the apparatus comprising (1) a frame; (2) a louver mechanism attached to the frame, the louver of approximately the same size and shape as the frame, the louver mechanism operable to rotate open and close against the frame; (3) an opener for attaching the louver mechanism to the frame, and for maintaining the louver mechanism at a desired position of opening; and, (4) a screen or mesh immovably attached to the frame, and positioned relative to the louver mechanism so that the screen is obscured and shielded by the louvers of the louver mechanism, and when the louver is opened, the screen or mesh is revealed, and whereby the screen filters out objects that impinge upon the opening left by the frame, yet permit light and air to pass.

Abstract: Engine cooling water is charged to a flexible diaphragm member (3d) to expand the flexible diaphragm member (3d) so that the substantial sectional area of an air passage (3b) is decreased when a ventilation resistance, in an air conditioning casing (2) in a maximum heating or a foot mode, is increased. On the other hand, the engine cooling water is discharged from the flexible diaphragm member (3d) to deflate the flexible diaphragm member (3d) so that the substantial sectional area of the air passage (3b) is increased when a ventilation resistance, in the air conditioning casing (2) in maximum cooling or face mode, is decreased. Thus, the property of a fan (3) can be changed into a property suitable for foot mode having a large ventilation resistance, while heating air is being supplied.

Abstract: A hooded exhaust vent having walls bounding an exhaust opening covered by a guard, in the assembly of which the walls and guard respectively have laterally extending slides urged in sliding movement into slide tracks in the path of the movement to establish a sliding interconnection therebetween.

Abstract: A portable smoking room having a flexible enclosure defining a room detachably mounted on a frame is provided. A duct is detachably mounted to the frame for transporting smoke laden air within the flexible enclosure outside of the flexible enclosure. A fan detachably mounted to the duct creates negative pressure within the flexible enclosure such that smoke laden air within said flexible enclosure may be drawn out though the duct and ambient air from outside may be drawn in through a plurality of air intake apertures in the flexible enclosure. The frame of the portable smoking room may be disassembled when the enclosure and the duct are detached from the frame such that the flexible enclosure, the frame, the fan, and the duct may be transported and reassembled at another location.

Abstract: An air distribution arrangement is adapted to be arranged in a cabinet for housing rack-mounted equipment that generates heat in use. The arrangement can be part of the cabinet when constructed or it can be an add-on feature. The arrangement includes plenum structure comprising side walls and a top wall that cooperates with the front door of the cabinet and the faces of the rack-mounted equipment to define a plenum. An air box in the cabinet draws ambient air from adjacent the floor into the plenum at a rate of at least 850 cfm. The ambient air is cooler than the air in the cabinet. The faces of the rack-mounted equipment have openings for receiving the ambient air to cool the interiors thereof. After cooling the rack-mounted equipment the air can be exhausted back to the ambient. The side walls and the top wall of the arrangement are adjustable to permit adjustment of the depth of the plenum. Pressure in the plenum can be relieved by slots in the plenum structure.

Abstract: A protective bed includes a shield comprising bullet-proof and impact resistance material that surrounds a metal frame. The shield operably separates to provide access to an interior sleeping area. Quick access doors are located on either side of the bed. A ventilation system provides for climate control as well as filtering harmful substances from the air. A rebreather scrubs carbon dioxide from air within the unit to allow a user to close the unit to outside air.

Abstract: A ceiling damper system that comprises a damper housing having an input opening to accept air from a heating, ventilation and air conditioning HVAC system, and an output opening to supply the HVAC air to a room. The system further comprises a damper mechanism to substantially block the flow of air through the damper housing when the temperature around the housing reaches a predetermined level. Two or more cross members are included, each of which is mounted between fixed points in the ceiling in a position to allow the cross members to support and hold the damper housing. The damper housing rests on the cross members and is mounted to the cross members. A method for mounting a ceiling damper that comprises providing a ceiling damper having a damper housing for accepting air from a HVAC system and providing the HVAC system air to a room. It further comprises mounting at least two cross members across fixed points in a room ceiling in a position to support the damper housing.

Abstract: An air velocity control unit includes first bars fixed using a frame. Second bars are disposed below the first bars. The second bars are alternatively arranged between the first bars. The second bars are connected with each other. The unit further includes a control member for moving the second bars upwardly and downwardly to control the air velocity. A connecting member connects the second bars to the control member. Clean air flows into a clean room by a controllable velocity in accordance with the upward and downward movement of the second bars.

Abstract: A bulk product melt system including a portable support platform positionable with respect to a bulk product source vessel. A water heating system is positioned with respect to the support platform and includes a water tank, which contains a volume of water heated to a selected process water temperature. A water flowmeter in control communication with the water tank monitors a water flowmeter rate of the heated water from the water tank. A mixing eductor in fluidic communication with the water tank receives the heated water at a controlled water flowmeter rate from the water tank. The portable bulk product melt system also includes a bulk product mixing system that is positioned with respect to the portable support platform and includes a bulk product receiver having an inlet portion in fluidic communication with an outlet of the bulk product source vessel and an outlet portion in fluidic communication with the mixing eductor.

Abstract: The present invention provides a solar-powered ventilation system for an attic or rafter space that mimics the appearance of the roofing material and thus has little effect on the appearance of the building. The vent has two pieces, a primary vent and a secondary vent. The primary vent is installed on a roof deck over a ventilation opening cut through the deck. The secondary vent is constructed to look like the surrounding field tiles and is installed over the primary vent. The secondary vent includes a solar panel preferably attached to the top surface of the secondary vent. One or more vent openings in the secondary vent and an opening in the primary vent conduct air between the attic or rafter space and the outside. In certain preferred embodiments, a solar-powered fan is also preferably located underneath the secondary vent.

Abstract: An insulated crawlspace vent to provide airflow in a crawlspace in the summer and insulate it in the winter. An aluminum extrusion built as a picture frame is glued to the opening in the foundation of the crawlspace. An insulated door closes from the outside and is latched shut to keep out the cold.

Abstract: A register assembly with adjustable faceplate connectors can be used to cover air duct openings that supply a flow of heated or cooled air to a room of a structure, and can also be used to cover air duct openings that receive return air from the room. The register assembly includes a faceplate that has removably attachable connectors that adapt the faceplate to be removably attached to a plurality of damper assemblies of different sizes. The plurality of connectors are adjustably connected to the faceplate to adapt the faceplate to each different size of damper assembly.

Abstract: A multi-layer barrier for insulation blocking an opening or passage of a building and for providing ventilation to or within a building. A plurality of inflated hollow membrane cube-like structures are formed adjacent to one another, which traverse a longitudinal width of the opening or passage. The hollow membrane cube-like structures are formed from generally rectangular sheets having two long parallel edges, two parallel short edges and a floor having one or more orifices in the forming floor of each non-bottom sheet between membranes, for air connection between membrane structures to be changed from an inflated and a deflated state.

Abstract: A security housing contains a housing body having ventilation openings for supplying air to a heat source, in which air convection takes place for dissipating heat. First air guide elements are disposed in the housing body on a first side of each of the ventilation openings and are shaped for partly covering the ventilation openings. The first air guide elements each have a base integrally molded on the housing body, the bases are spaced apart from each other such that, in each case one of the ventilation openings is further defined. A removable security housing part is disposed inside the housing body and forms an air guide duct. Second air guide elements are disposed in the air guide duct and are shaped such that they cover the ventilation openings and the first guide elements such that, non-rectilinear air guidance is ensured.

Abstract: A portable device that is placed between the ambient air outside an existing enclosed space and the existing enclosed space that pulls the ambient air through an interchangeable array of air cleaning modules and delivers the cleaned air from the air cleaning modules into the existing enclosed space. The air cleaning modules are disposed outside the existing enclosed space so that only cleaned air is drawn into the existing enclosed space. The air cleaning modules can also be capped for easy and safe disposal after use. The air cleaning modules are in fluid communication with an electric fan that is disposed inside the existing enclosed space through an air flow inlet that is part of an expandable window insert. Accordingly, the cleaned air delivered to the existing enclosed space provides its inhabitants with clean breathable air and increases the air pressure in the existing enclosed space which prevents contaminated air from the external environment from entering the existing enclose space.

Abstract: A single-piece vent baffle and method of installing a vent baffle. The vent baffle includes a main body portion and a tail portion and a first face and a second face. The main body portion includes at least one spacer extending from the first face. The vent baffle may be installed to an underside of a roof and to a wall plate by positioning the spacer adjacent the underside of the roof to create an air flow channel between the underside of the roof and the first face. The vent baffle blocks an opening between the roof and the wall plate while allowing ventilating air to flow through the air flow channel.

Abstract: The invention relates to an arrangement in a hot air aggregate comprising a cover (2) having a built-in fan (3), an enclosed chamber (4) after said fan (3) which extends into a conically formed, front portion (5), to which a burner unit (7) having an enclosed burner (9) supplied with a gas flow and a nozzle (10) are provided via a connecting coupling sleeve (6).