Abstract: A self-contained pre-manufactured roof top unit is used to circulate fresh air, heat or cool a building. The housing has a blower connected into a circulation system to circulate air into and out of the building. The unit has a pressure relief opening for connection into the building that is used to relieve air pressure buildup within the building. The pressure relief opening is part of a pressure relief passage that is independent of the blower and has an exhaust vent that opens and closes automatically in response to pressure differential between the building and ambient air.

Abstract: An apparatus captures and evacuates air from an area above a body of liquid, particularly a swimming pool. The apparatus exhausts the contaminants and water vapor to an area outside of an enclosure housing the swimming pool. The invention comprises an assembly mounted to a wall adjacent the body of liquid. The assembly is comprised of a top section, opposing side sections connected by the top section, and at least one flange extending from an edge of at least one side section. The wall-mounted and bench assembly may be formed integrally, but also may be formed from two or more pieces.

Abstract: A cooling structure for an electricity storage device includes: a secondary battery generating heat; a DC-DC converter generating heat in a quantity different from that of secondary battery; an exhaust path for passing air after cooling secondary battery generating heat in a relatively small quantity, and led to the outside of a vehicle; an exhaust path for passing air after cooling DC-DC converter generating heat in a relatively large quantity, and joining exhaust path; and a circulation path connected to exhaust path upstream of an air flow beyond a position at which exhaust path joins, and led to the inside of a vehicle compartment. With this configuration, there is provided a cooling structure for an electricity storage device in which the suppression of both increase in temperature and decrease in inner pressure inside the vehicle compartment can be effectively achieved at the same time.

Abstract: A ceiling air outlet has an elongated supply air chamber comprising a supply air inlet. At least one side chamber is located to the side of the supply air chamber. A nozzle inflows supply air from the supply air chamber into the side chamber. Each side chamber has an associated heat exchanger through which room air is induced into the side chamber as a result of induction. Each side chamber comprises an outlet opening. Each nozzle flows the supply air passing through it horizontally. The ceiling air outlet comprises on the underside facing toward the room to be ventilated, a flat element that covers the ceiling air outlet and is impermeable to air. Each outlet opening is oriented in alignment with its nozzle(s) so that the supply air flowing through each nozzle is not deflected. The room air is induced from above the upper edge of the ceiling air outlet.

Abstract: A vehicle having an HVAC system with a particular ventilation housing design and method for making the same are described. The ventilation housing has a common mode door for defrost and floor panels and allows efficient use of components to provide effective operation in bi-level and other modes. In bi-level mode, the mode doors can be operated to form flow path such that floor outlet is virtually on the upstream side of the panel outlet.

Abstract: The device of the present invention is located in a closed containment enclosure surrounding a storage bin and comprises a closed tank (28) positioned on the storage bin containing a liquid (26) and having a fireproof shield enclosing the tank and a liquid level control system for controlling the level of liquid in the tank with the tank (28) comprising at least one opening in communication with the closed container enclosure, and at least one internal chamber in direct communication with the storage bin via a flue pipe and at least one external chamber in direct communication with the containment enclosure via said at least one opening.

Abstract: An air outlet has at least one air supply line and at least one baffle plate, wherein the opening cross section of the air supply line is arranged in a plane running parallel to the baffle plate, the baffle plate has a circumferential contour, and is spaced apart from the air supply line, and the opening cross section of one end of the air supply line is directed toward the baffle plate. Such air outlets are particularly suited for small-volume rest rooms, such as in a vehicle, which require a sufficiently high ventilation quality at the lowest possible draught.

Abstract: A method and apparatus for distributing air. The apparatus includes an air distribution vent that distributes air into a compartment, wherein the distribution of air into the compartment causes compartment air from the compartment to be drawn from the compartment. The apparatus also includes a contaminant removal system, wherein compartment air drawn from the compartment is processed to remove contaminants before being distributed back into the compartment by the air distribution vent.

Abstract: Described are roll-to-roll or reel-to-reel thermal or rapid thermal processing tools (reactors) are used to react a precursor layer on a continuous flexible workpiece. Variants of the reactors are described, including a reactor having multiple exhaust outlets connected to a process gap of the reactor between an entrance opening and an exit opening of the process gap; a reactor including multiple gas inlets and exhaust outlets connected to a process gap of the reactor between an entrance opening and an exit opening of the process gap; a reactor including multiple gas inlets and exhaust outlets connected to a process gap of the reactor between an entrance opening and an exit opening of the process gap; and a reactor including multiple gas inlets and exhaust outlets connected to a process gap of the reactor between an entrance opening and an exit opening of the process gap.

Abstract: A vent structure 100A of the present invention includes a housing 91 and a vent member 13A attached to an opening portion 91k of the housing 91. The vent member 13A is provided with a support body 11 having a through hole 11h to serve as a gas passage between the interior and the exterior of the housing 91 and a gas permeable membrane 6 fixed to the support body 11 so as to close the through hole 11h. Assuming that a thickness direction of the gas permeable membrane is a height direction, a height H1 of the support body 11 from a second opening end face 11q (aligned with an outer surface 91p of the housing 91) to a first opening end face 11p on the other side is set to 4 mm or more.

Abstract: A base for a food processor housing a motor and including controls for operation of the food processor. The base includes an air intake, an air exhaust, and a baffle, wherein the air exhaust and baffle are formed as a part of the bottom of the food processor base and act to reduce the sound emitted by the food processor. The bottom of the food processor base includes an internal cavity defined partially by a support flange where heated air is exhausted. The air is then forced to change directions before exiting through exhaust ports.

Abstract: A substrate processing apparatus includes a chamber having an inner space where a process is carried out with respect to a substrate and an exhaust unit for exhausting substance in the inner space to the outside. The exhaust unit includes a first exhaust plate located at an upstream of an exhaust path of the substance, the first exhaust plate having first exhaust holes, and a second exhaust plate located at a downstream of the exhaust path, the first exhaust plate having second exhaust holes. The first exhaust plate is disposed outside a support member, and the second exhaust plate is disposed below the first exhaust plate generally in parallel to the first exhaust plate. The exhaust unit further includes first covers for selectively opening and closing the first exhaust holes and second covers for selectively opening and closing the second exhaust holes.

Abstract: A system and method for providing a substantially constant volume exhaust or ventilation air terminal system is shown for controlling exhaust and/or return airflow rates in a system having a central fan or ventilator. The system and method permits zone-by-zone or area-by-area airflow regulation or control in non-demand areas in response to a demand or call for ventilation in demand areas. In one embodiment, the system employs at least one constant airflow controller or regulator situated in a damper. Another embodiment shows a combination of a first constant airflow controller or regulator situated or mounted on a damper with a second constant airflow controller or regulator situated in a duct associated with the damper. In still another embodiment, a constant airflow controller or regulator is provided in a duct, and used in combination with a solid damper.

Abstract: An air exhaust box, for mounting in an exterior building wall and connecting to at least one exhaust duct, includes: a housing having side walls, a rear wall and a front exhaust opening; the front opening having a mounting flange surrounding a periphery of the opening and extending outwardly from the side walls; the rear wall having an inlet opening greater than a predetermined maximum dimension; each of the side walls being joined to the rear wall at an angle less than 90 degrees; and a duct adapter having a cover removably mountable to the rear wall with removable fasteners, the cover having an outer dimension larger than said maximum dimension of the inlet opening and a rearwardly projecting duct sleeve with an inner opening of size between said maximum dimension and a minimum dimension.

Abstract: A vented panel connector for a decorative panel system includes a front plate, a pair of spaced-apart vent plates carried by the front plate, a pair of spaced-apart panel flanges extending from each of the pair of spaced-apart vent plates and a plurality of vent openings extending through each of the pair of vent plates between the front plate and the pair of spaced-apart panel flanges.

Abstract: A method and apparatus are disclosed for testing the integrity of a portion of flexible pipe body. The method includes the steps of, via at least one port in an end fitting assembly in which an end of a portion of flexible pipe body is terminated, monitoring at least one parameter associated with an annulus region disposed between layers of the flexible pipe body, the annulus region being connected to the port by a connecting passageway.

Abstract: A connector system is disclosed for connecting an exhaust extraction system to the exhaust pipe of an internal combustion engine. The connector system comprises a first flange, which can be connected to the exhaust pipe of the engine. A second flange is connected to a conduit through which exhaust fumes are evacuated. The first and second flanges can have mating tapered surfaces, to facilitate alignment of the second flange relative to the first flange. The second flange preferably comprises magnets for providing a secure connection between the first flange and the second flange, while enabling quick release of the connection. The magnets are preferably arranged in an asymmetric configuration.

Abstract: A paint booth arrangement maximizes floor space and efficiency of a painting operation. The arrangement comprises an equipment enclosing structure and certain air handling equipment specifically configured within the structure. The structure comprises forward and rearward sections, opposed wall sections, a centralized roof section, and opposed wall-to-roof sections, which sections define open space having varied elevation for receiving paintable equipment. The air handling equipment comprises an air intake and exhaust assemblies and an air replacement system. The air intake and exhaust assemblies extend coextensively intermediate the wall sections at the rearward section and function to support portions of the air replacement system. The air replacement system comprises conduit extending intermediate the forward and rearward sections as defined by the wall-to-roof sections.

Abstract: An air duct comprises a duct wall bounding an airflow channel that extends through the air duct along a flow path. The airflow channel has a plurality of cross-sections that are bounded by the duct wall and that are perpendicular to the flow path. A first one of the cross-sections has an aspect ratio that is less than two. A second one of the cross-sections has an aspect ratio that is greater than four and a minimum dimension that is less than three-quarters of an inch. A third one of the cross-sections has an aspect ratio that is less than two. The second cross-section is positioned between the first and third cross-sections along the flow path. The air duct channels air beneath a door, thereby allowing a vacuum or blower tool to operate in one room while the vacuum or blower device operating the tool operates in a different room.

Abstract: A cover assembly for an aperture in a wall may include: a first support and a second support provided on the wall, each support including a monolithic receptacle; a first pin-portion and a second pin-portion rotatably mounted in the receptacles, respectively, to define respective pivot-hinge arrangements; and a cover coupled to the first and second pin-portions. For example, the wall may be a part of fluid (e.g., air) duct disposed in a vehicle, and the cover may be oriented with respect to the wall so that the aperture represents one of an inlet and an outlet.

Abstract: A precision apparatus has a movable member (A), moving in a bridge element (2) arranged perpendicular to the movement of the moveable element. The bridge element comprising an air slit (S) and a exhaust (E). The bridge element (2) comprises a primary air duct (21), substantially extending along the length of the bridge element, which primary air duct is provided with apertures (21a, 21b), The apertures (21a, 21b) are evenly distributed along the length of the bridge element, and form an air flow passage to a secondary air duct (22), also substantially extending along the length of the bridge element Through the secondary air duct in operation air is drawn through the air slit (S).

Abstract: A flexible heat exchanger is incorporated into a ridge vent to form an assembly. The heat exchanger operates by collecting thermal energy (heat) from heated air exhausting from the attic space via the ridge vent. Air in the attic space is typically heated by the solar energy falling on the roof. Heat from this air is transferred through the wall of heat exchange tubes integrated into the ridge vent. The flow of heated air around the outside of the tubes is driven by the column of heated air that forms in the attic space, similar to the draft in a chimney. The chimney effect in the attic space circulates the flow of outside air into the soffit vents through the attic space where it is heated and then exhausted out the ridge vent, passing by and around the tubes before it exits.

Abstract: A structure for connecting an air-conditioning duct to an air-conditioning unit; the air-conditioning unit 1 having a first air supply outlet and a second air supply outlet 12 adjacent with each other, the air-conditioning duct having a first air passage and a second air passage adjacent with each other, wherein the first air supply outlet 11 and the second air supply outlet 12 include a U-shaped auxiliary wall 2 having a notched part K at one side therearound, a supply outlet boundary wall 130 separating the first air supply outlet 11 and the second air supply outlet 12, and a duct side step part Z is formed between an opening rim of a first duct 31 and an opening rim of a second duct 32, the duct side step part Z is contacted with is contacted with the supply outlet boundary wall 130 to install the air-conditioning duct 2 to the air-conditioning unit 1.

Abstract: A multi compartment green shelter is disclosed. The multi compartment green shelter comprises a main housing divided into a plurality of chambers. Separators are provided in the chambers to divide the chambers into compartments. At least one cooling unit is provided in middle chamber to provide cooling effect to all the compartments. Phase change material (PCM) panels are provided in the compartments to maintain preset temperature. A door is provided with each of the compartments to allow entry of a person therein.

Abstract: A generally S-shaped vent is provided for a roof including a substructure having at least one ventilation hole and being covered by a plurality of tiles. The tiles form a finish layer having peaks and valleys. The vent includes a base assembly having a number of flange members and at least one venting member with a vent aperture. The flange members are coupled to the roof substructure at or about the ventilation hole. At least one cap member is coupled to the base assembly, overlaying the vent aperture and including an upslope end, a downslope end, first and second sides, and an arcuate portion extending between the first and second sides. First and second louvered portions of the first and second sides of the cap member provide a ventilating passageway through the vent. The vent substantially conforms to the peaks and valleys of the finish layer of the roof.

Abstract: Disclosed is a modular, expandable, and portable shooting range system. The system can include one or more shooting modules that mount together to provide different numbers of shooting lanes with various lengths. The shooting modules are pre-engineered with removable panels in permit additional shooting modules to be added on as customer orders. This configuration also permits adding to the length of the shooting range to accommodate firing of different weapons. The shooting range system can further include a control booth which is divided from the shooting lanes. The control booth can be integrally formed with the shooting modules, or can be separate. The control booth can include a module control which allows a person to control lighting, air, and target control systems of the shooting range system, and can further provide a safe location to view the range.

Abstract: Disclosed herein is an air conditioner in which the structure of an outlet port is improved to prevent dew condensation at the outlet port. The air conditioner includes an outlet port to discharge air and a guide forming a discharge channel to guide air to the outlet port side. The guide is formed in a step shape to expand the discharge channel. The air conditioner has the effect of preventing dew condensation at the outlet port.

Abstract: An appliance comprising a sealable chamber (10) and a door (12) for the sealable chamber (10), wherein in an opened position the door (12) allows access to the chamber (10); and a venting system for allowing air to escape from the sealable chamber (10) when the door (12) is in closed position, wherein the venting system includes a vent flap (11), the vent flap (11) moveable from a closed position sealing the vent system to an open position allowing air to escape. The venting system allows an appliance, such as dishwasher, to expel unwanted air or vapour in a controlled manner whilst the appliance remains closed.

Abstract: The invention describes an outlet system in which a characteristic of one of gas and/or a liquid, for example the percentage CO2 in air, is measured in a central outlet duct (2). The outlet system comprises local outlet ducts (5, 6, 7) that are in flow communication with the central outlet duct (2). The flow through the local outlet ducts is partly determined by corresponding flow regulators (25, 26, 27) By means of selective setting of these flow regulators by a control system (22) the local value of the characteristic can be calculated using measured values in the central outlet duct (2) and the positions of the flow regulators (25, 26, 27). By means of the invention costs of sensor controlled ventilation systems, in, for example, residential and utility building, are reduced.

Abstract: A ventilation system for providing fresh outdoor directly to each floor through an intake damper on the floor and for admitting only as much air as is required to meet the required outdoor air requirements when the temperature of the outdoor is at extreme ambient temperatures. The system utilizes a compartment unit on each floor and a plurality of VAV's which are located in zones on the floor for achieving desired temperatures in each zone by combining the recirculating air with the outdoor fresh air for delivering to the VAV's at about 55° F.

Abstract: An external suspension system for supporting an inflatable air duct includes a series of external hangers that help hold the duct open while the duct is deflated. In some embodiments, the suspension system supports the duct at a series of points that are broadly distributed in a staggered pattern across the duct, yet the entire duct can be suspended from a single overhead cable, even if the duct is a stepped tube with multiple diameters. The system includes novel ways of locking the hangers to the duct and to the overhead cable.

Abstract: An image-capture apparatus includes: an outer casing inside of which predetermined sections are arranged; an imaging device arranged inside of the outer casing; and a circuit board arranged inside of the outer casing, on which electronic components are mounted, the electronic components being heat generating elements. A heat-releasing air duct is formed on an outer surface side of the outer casing, at least an opening of the duct being formed at one surface of the outer casing and not communicating with an inside of the outer casing. Part of the outer casing is provided as a duct forming part that forms the heat-releasing air duct. Heat generated by the electronic components mounted on the circuit board is conducted to the duct forming part to be released outside of the outer casing from the heat-releasing air duct.

Abstract: A solar roof-ventilating device for compulsorily generating the flow of indoor and outdoor air includes a hollow ventilating casing provided on the roof to communicate the inside and outside of the roof with each other. The interior of the ventilating casing is provided with a heat dissipator constituted of a plurality of heat-dissipating pieces. A plurality of heat-conducting pipes penetrates through the heat dissipator. The other end of the heat-conducting pipe is connected to a heat-absorbing plate made of heat-absorbing materials. The front of the heat-absorbing plate is coated with a layer of black coating to facilitate the heat-absorbing speed of the heat-absorbing plate. Therefore, after the heat-absorbing plate has absorbed the solar energy, the heat can be conducted to the heat dissipator via the heat-conducting pipe. In this way, the temperature of the heat dissipator increases to generate a rising hot air, thereby to compulsorily cause the flow of the indoor air and achieve the ventilating effect.

Abstract: In a safety vent part and an electric energy storage device having the same, the safety vent part includes a plate coupled to the device, a metal sheet and a metal cap. A hole having a step portion is formed through the plate, and is in communication with an interior of the device. The metal cap having an exhaust nozzle corresponding the hole is coupled into the step portion by a tight fit. The metal sheet is disposed between a bottom surface of the step portion and the metal cap. When an internal pressure of the device is higher than a predetermined breaking pressure, the internal pressure of the device breaks the metal sheet. A gas generated abnormally in the device is exhausted through the hole and exhaust nozzle.

Abstract: A humidifier and humidity sensor for use with a breathing assistance apparatus. The humidity sensor senses absolute humidity, relative humidity and/or temperature at both the patient end and humidifier end. The humidifier may also include provision to both control independently the humidity and temperature of the gases. Further, a chamber manifold facilitates easy connection of the humidifier to various outlets, inlets and sensors. A heated conduit provides a more effective temperature profile along its length.

Abstract: In a method of exhausting an interior room to atmosphere through a corrugated conduit, the use of a connector which is attached to the corrugated conduit by tongues seated in the recesses of the conduit corrugations as a result of a telescoping together of the connector and conduit, the tongues preventing opposite direction untelescoping and obviating leakage-promoting crushing of the corrugations as might result from using a clamp.

Abstract: A replacement dryer vent for remodelers includes a typical exterior vent portion and an interior tube portion. The tube portion extends into the building and has an internal diameter that increases towards its innermost edge, i.e., toward the interior of the building. The extension is designed to slip over an existing cylindrical duct already in a wall. This allows one to replace an existing dryer vent by simply removing the exterior vent portion and leaving the duct work in position. The new vent is simply inserted in the existing hole with the tube slipping over the duct making a tight connection.

Abstract: A 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. In one aspect primary vents are installed in the roof deck below the roof tiles, and the roof tiles are mounted to as to provide air spaces in between them and thus allow air flow from the primary vents to the outside. In another aspect a secondary vent is constructed to look like the surrounding field tiles and is installed over each primary 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. The secondary vent has a frame with one or more vent openings and a cap covering each opening shielding the ventilating space. Frames are formed in one piece and are made to fit each different size and type of roofing tile. The caps and the frame are ribbed for rigidity.

Abstract: A vent apparatus for cooperating with duct work associated with an exhaust fan to enable air to be exhausted from an interior room of a dwelling to the exterior environment. The vent apparatus includes a base member and a cover member releasably securable to the base member. The base member includes an attaching portion having a plurality of locking portions, while the cover member includes a plurality of flexible latching arm members which releasably engage the locking portions when the cover member is placed over the attaching portion. The attaching portion includes an enlarged opening which enables air exhausted from an interior room to be directed out between the base and cover members to the exterior atmosphere. The apparatus is particularly well-adapted to be used with vinyl or aluminum siding and is relatively inexpensive to construct, light-weight and easy to install. In an alternative embodiment, the apparatus includes a screen adapted to be secured to the base member.

Abstract: A vented laboratory cabinet from which vapors and fumes may be effectively exhausted from all parts of the cabinet includes an interior storage space defined by a plurality of panels that are accessible through a closeable door, at least one shelf carried within the cabinet interior, and a vent pipe extending downwardly from an exhaust opening toward a lower part of the cabinet. Improved venting is achieved with a vent pipe having at least two vertically spaced apart vent openings for passage of gases from the cabinet into the vent pipe, wherein at least one of the vent openings is located above the shelf and at least one other vent opening is located below the shelf. The improved vented laboratory cabinet provides effective evacuation of fumes from both sides of the shelf, whereby accumulation of chemical vapors is reduced or eliminated.

Abstract: A vent apparatus for cooperating with duct work associated with an exhaust fan to enable air to be exhausted from an interior room of a dwelling to the exterior environment. The vent apparatus includes a base member and a cover member releasably securable to the base member. The base member includes an attaching portion having a plurality of locking portions, while the cover member includes a plurality of flexible latching arm members which releasably engage the locking portions when the cover member is placed over the attaching portion. The attaching portion includes an enlarged opening which enables air exhausted from an interior room to be directed out between the base and cover members to the exterior atmosphere. The apparatus is particularly well-adapted to be used with vinyl or aluminum siding and is relatively inexpensive to construct, light-weight and easy to install. In an alternative embodiment, the apparatus includes a screen adapted to be secured to the base member.

Abstract: A vent apparatus for cooperating with duct work associated with an exhaust fan to enable air to be exhausted from an interior room of a dwelling to the exterior environment. The vent apparatus includes a base member and a cover member releasably securable to the base member. The base member includes an attaching portion having a plurality of locking portions, while the cover member includes a plurality of flexible latching arm members which releasably engage the locking portions when the cover member is placed over the attaching portion. The attaching portion includes an enlarged opening which enables air exhausted from an interior room to be directed out between the base and cover members to the exterior atmosphere. The apparatus is particularly well-adapted to be used with vinyl or aluminum siding and is relatively inexpensive to construct, light-weight and easy to install. In an alternative embodiment, the apparatus includes a screen adapted to be secured to the base member.

Abstract: An over-the-range type oven incorporating a bottom plate having substantially triangular shaped openings, or inlets, is described. In one embodiment, the bottom plate has a first, interior surface and a second, range-facing surface. First and second triangular shaped openings, or inlets, extend through the bottom plate, and each triangular shaped opening has a first leg, a second leg and a third leg. The bottom plate may further include a first air guide positioned adjacent at least one of the first opening legs and extending from the bottom plate first, interior surface for directing air flow through the first opening and into the oven cabinet, and a second air guide positioned adjacent at least one of the second opening legs and extending from the bottom plate first, interior surface for directing air flow through the second opening and into the oven cabinet.

Abstract: A vent apparatus for cooperating with duct work associated with an exhaust fan to enable air to be exhausted from an interior room of a dwelling to the exterior environment. The vent apparatus includes a base member and a cover member releasably securable to the base member. The base member includes an attaching portion having a plurality of locking portions, while the cover member includes a plurality of flexible latching arm members which releasably engage the locking portions when the cover member is placed over the attaching portion. The attaching portion includes an enlarged opening which enables air exhausted from an interior room to be directed out between the base and cover members to the exterior atmosphere. The apparatus is particularly well-adapted to be used with vinyl or aluminum siding and is relatively inexpensive to construct, light-weight and easy to install. In an alternative embodiment, the apparatus includes a screen adapted to be secured to the base member.

Abstract: A continuous vent in the form of a resilient apertured trough which fits into a bevel in the center of the soffit or at the fascia or the wall. The advantages of the vent is that its hold is based on its shape, its resilience and the angle of the bevel in the soffit. The vent is used in existing soffits or on new construction. The method involves the steps of venting a soffit by cutting two beveled ends a few inches apart and inserting a resilient apertured vent in the space between the bevels. For new construction, one beveled strip is temporarily adhered via an adhesive to hold the vent in place until the second bevel is completed and both beveled pieces are installed.

Abstract: The present invention is an externally mounted clothes dryer filter which attaches to a standard clothes dryer hose. The externally mounted clothes dryer filter is fastened to an external wall of a structure. The clothes dryer exhaust hose is attached to an input. A screen device in the filter captures lint and other particulate matter. The filter can be removed for cleaning.

Abstract: An extensible-contractible duct connector of slidingly interfittable, elongated, partial duct elements, the partial duct elements having an open end telescopically interfit with an open end of the other partial duct element to cooperatively form a duct connector, each having an outer closed end, each partial duct element having a side air flow opening directly adjacent the respective one of the closed ends to prevent significant dead air space between the opening and the adjacent closed end, the partial duct elements having slidably interfitting lateral edges with each other enabling sliding telescopic interfit that is incrementally variably adjustable between an extended condition with the side air flow openings offset maximally from each other, and a contracted condition with the side air flow openings having zero offset from each other.

Abstract: A telescopically extensible-contractible air duct connector comprising an elongated outer duct element having an open end, a closed end, and a lateral opening adjacent the closed end, an inner duct element telescopically interfitting within the outer duct element, having an open end within the outer duct element, a closed end located outside the outer duct element, a lateral opening adjacent the closed end, and a laterally projecting sleeve around the lateral opening, the outer duct element having an elongated slot extending from the open end and of a width slightly greater than that of the laterally projecting sleeve of the inner duct element to receive the sleeve upon telescopic contraction of the connector, and the inner duct element having an extended panel within the outer duct element, adjacent the slot, and of a width greater than the width of the slot to cover the slot when the connector is at least partially extended.

Abstract: A skyhatch or skylight having a case to which one or more wings are pivotably attached whose opening and closing is accomplished by using a combination cable system and pneumatic spring opening and closing mechanism such that the wings can be opened to any desired position between their fully closed and fully opened position on a continuously variable basis.

Abstract: A passive ventilation device and method for releasing hydrogen from an enclosure (3) housing a battery (9). The enclosure has an outer shell (11) and an inner insulating layer (13) that includes a gas permeable panel (7). The panel is disposed within the chamber adjacent one of the sidewalls of the enclosure. The sidewall has an inlet opening (34) and an exhaust opening (36) in communication with a ventilation space (32) for providing an upward air flow through the ventilation space to draw hydrogen through the gas permeable panel into the ventilation space. The upward air flow can be powered by the low density hydrogen and/or by heating the air within the ventilation space to a temperature greater than the ambient temperature.