Abstract: The present invention is a mobile air contaminant control system that includes a filter assembly enclosed by a mobile outer chamber. The filter assembly is tapered to create a large volume air way downstream from the filter assembly that enables more even air flow and filter loading. One or more exhaust fans pull the air through the filter assembly and exhaust it to the exterior of the chamber. The system is functionally attached to an exterior structure having at least one air intake and housing a work piece. As airborne contaminants are generated from the work piece(s), the control system exhausts them from the exterior structure through the filter assembly and into the external environment.

Abstract: A remote suction configuration, method, and retrofit kit for ventilating exhaust from an exhaust-producing power tool used indoors. An exhaust conduit is connected between an exhaust port of an exhaust-producing tool used within a substantially enclosed structure and an intake port of a vacuum apparatus placed externally to the structure. Universal connectors or retrofit adapters are provided at the ends of the exhaust conduit to connect the exhaust conduit between an exhaust port of the exhaust-producing tool and an intake port of the vacuum apparatus. In this manner, exhaust produced by the tool may be actively pulled through the conduit to an external environment instead of relying on the tool to push the exhaust the entire length of the conduit.

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 exhaust apparatus includes a structural member; a vacuum pump configured to exhaust a gas via the structural member; and a regulator configured to regulate a temperature of the structural member. The structural member has first and second end faces and a columnar through hole connecting the first and second end faces to each other. The apparatus is configured such that the vacuum pump exhausts a gas via the through hole.

Abstract: A safety cabinet has a body adapted to contain hazardous substances and having an upright front side, a base underneath the cabinet and adapted to support the cabinet spaced above an underlying floor. The base having an upright front wall below the body, set back from the front side thereof, and formed with a plurality of air intake openings, and structure in the base forming a suction-vent passage extending from the intake openings.

Abstract: A display device according to the present invention comprises a housing having a waterproof structure and provided with an accommodation room formed therein, a ventilation part defined outside the accommodation room and leading to outside of the housing, a display panel arranged inside the accommodation room and including a display screen viewable from a front surface side of the housing, and one or a plurality of heat pipes arranged on a rear surface side of the display panel. The heat pipe passes through a side surface wall forming the accommodation room and extends from inside of the accommodation room to inside of the ventilation part.

Abstract: A ventilator includes a base, a drive device disposed on the base, an impeller coupled to the drive device and driven by the drive device, and a cover assembled with the base to define a closed area between the cover and the base for receiving a first circuit board therein, wherein when an AC power source is input to the first circuit board to be converted, a DC power source is output to drive the drive device.

Abstract: An air handling unit for supplying air to a building including an exterior housing forming a chamber and having a longitudinal axis and air inlets and an outlet at opposite ends of the housing. An array of plenum fan units is mounted in the housing between its opposite end sections, this array extending transversely relative to the longitudinal axis. A corresponding array of insulated inlet flow concentrators is arranged adjacent to upstream ends of the plenum fan units. Each concentrator forms a flow passage which tapers towards an inlet opening of its respective fan unit. The flow passage is formed by a perforated metal wall circumferentially encased in sound attenuating material. Interior walls are mounted in the housing to separate the fan units from one another. At least one mechanism is mounted at one end of the compartment for each fan unit formed by the interior walls.

Abstract: An exhaust system for an aircraft galley chiller is provided. The exhaust system includes a galley having a chiller that includes an inlet, a condenser fan inlet, a condenser fan outlet proximate to chiller inlet, and a first flow of air through the condenser, an air ventilation outlet conduit that includes a second flow of air therethrough, and an ejector pump. The ejector pump includes a first airflow inlet, a second airflow inlet and an airflow outlet, wherein the first airflow inlet is coupled in flow communication with the condenser fan outlet, the second inlet is coupled in flow communication with the air ventilation outlet conduit. As the second airflow increases, the first velocity increases in a direction away from the galley chiller facilitating a decrease in temperature at the condenser fan inlet.

Abstract: An air-circulator includes an housing with an air inlet, an air outlet opening, an odor filter, and an insertion opening for inserting the odor filter. The odor filter is assigned to the air outlet opening.

Abstract: A combination of a wood stove and radon collecting system. A radon collection tube located in the basement of a building is connected via conduit leading into the combustion chamber of the stove. Burning wood within the combustion chamber is operable to normally cause radon within the building to flow into the radon collection tube, through the combustion chamber and then out through an exhaust tube. In the absence of burning wood, a lighted candle is placed in the combustion chamber tube to cause the radon within the radon collection tube to flow into the combustion chamber and then out through the exhaust tube.

Abstract: A composting apparatus (1) comprising a compost heap (2) comprising compostable material. There is at least one ventilation pipe (4) and air moving means (6). The ventilation pipe (4) comprising a pipe wall (8) defining a conduit for gas. The ventilation pipe has a connection end (10) and a ventilation portion (12). The ventilation portion has a plurality of aeration holes (14) extending through the pipe wall (8). The ventilation portion (12) is located within the compost heap (2) and the connection end (10) is coupled to the air moving means (6) such that, when active, the air moving means (6) causes movement of air through the aeration holes (14). The invention also extends to a method of ventilation compost.

Abstract: A roof ventilation system operable based on environmental parameters is disclosed. The system includes a vent, a fan, a solar panel, a battery and a controller. The vent is positioned within a field of a roof, and includes a first opening configured to allow airflow between regions above and below the roof. The fan is positioned to generate an air flow through the vent. The solar panel is positioned on the roof in a location such that the solar panel receives solar radiation. The battery is electrically connected to the solar panel. The controller is in communication with the fan, and is configured to drive the fan based on at least one environmental parameter.

Abstract: A combination of a wood stove and radon collection system. A radon collection tube location in the basement of a building is connected via conduits leading into the combustion chamber of a wood stove. Means secure the radon collection outlet to the stove between the stove door and the stove main body. Metal strips extend across gaps formed between the stove door and stove main body when the outlet is in the installed position.

Abstract: The salon ventilation system includes a wet/dry vacuum cleaner connected to main on/off power and speed control switches. The vacuum cleaner is connected to a manifold feeding a plurality of inlet port assemblies, each assembly being used in a respective manicurist station. Included are individual air input ports with respective shut-off valves or blocking caps. Each air input port is placed adjacent an open chemical jar to suction chemical fumes released therefrom. The manifold is placed behind walls or in a housing to cover the pipes and aesthetic purposes. The vacuum device has an output port that vents chemical fumes outside. The inventive ventilation system achieves odor control without the use of a ventilation hood. Moreover, if none of the stations is being used, power to the vacuuming device is turned off.

Abstract: Highly efficient ventilation fans for exhausting air out from underneath roofs, and/or for being portable in use and application. The fan can include optimized airflow blades having a twisted configuration that can move at a rotational speed operation of up to approximately 500 rpm. The approximately 15 inch diameter twisted blades can be premolded on a hub that together form a single molded unit of plastic. They can also be fabricated using metal. The unit can be mounted in an exhaust outlet having a conical diffuser on or adjacent to a roof. Alternatively, the fan can be portable for use most anywhere there is a need for ventilation and moving of air. The blades can rotate by a solar powered motor, where the blades and motor can generate up to approximately 1040 cfm while using no more than approximately 16 Watts.

Abstract: An autonomous ventilation system includes a variable-speed exhaust fan, a controller, an exhaust hood, and an infrared radiation (“IR”) sensor. The exhaust fan removes air contaminants from an area. The controller is coupled to the exhaust fan and adjusts the speed of the exhaust fan. The exhaust hood is coupled to the exhaust fan and directs air contaminants to the exhaust fan. The IR sensor is coupled to the controller, detects changes in IR index in a zone below the exhaust hood, and communicates information relating to detected changes in IR index to the controller. The controller adjusts the speed of the exhaust fan in response to information relating to detected changes in IR index. The autonomous ventilation system also includes an alignment laser to indicate a point at which the IR sensor is aimed and a field-of-view (“FOV”) indicator to illuminate the zone in which the IR sensor detects changes in IR index.

Abstract: A whole house fan system and installation methods configured to reduce noise generated by the fan are provided. The system generally includes a fan, a register, and a flexible duct extending between the fan and the register. The flexible duct has acoustical insulation properties, which helps to reduce sound transmission from the fan to the register. The fan system is configured to be mounted in the attic space of a house. The fan motor is suspended in the attic so that it does not have direct contact with any part of the building structure.

Abstract: The subject invention relates to ventilation systems that include a unitary molded housing that defines a flow path and one or more mounting structures, wherein the flow path and the mounting structures are integrated into the unitary molded housing. An exterior structure is coupled to the unitary molded housing, the exterior structure includes at least one inlet port, the at least one inlet port being concealed from view. At least one recess is coupled to the exterior structure that accommodates at least one illumination element.

Abstract: A manicurist air purification apparatus with magnifying glass for improving a manicurist's working environment, which is simple, inexpensive and has efficient air sucking means to remove the toxic fumes, without impairing the manicurist hands movement.

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: A ventilator having a ventilator stator for mounting to a structure and a ventilator rotor for mounting and rotation with respect to the stator. One or more wind-drivable elements are mounted to the ventilator. A motor is provided for operation between the ventilator rotor and ventilator stator for selective motor-driven rotation of the ventilation rotor.

Abstract: A buttressed hinge assembly adjusts to fit a roof in order to hold a fan thereon, which fan is especially suitable for a restaurant roof. The hinge assembly attaches to a roof vent to hold the fan in a proper position, yet permits the fan to be easily moved for cleaning of vent and the fan.

Abstract: An impeller exhaust ridge vent is provided for covering a ridge slot formed along the ridge of a roof. The ridge vent has an elongated laterally flexible center panel with edge portions along which vents are formed. Standoffs can depend from the bottom of the center panel for supporting the center panel a predetermined distance above the roof deck so that attic air can vent through the ridge slot, beneath the center panel, and exit through the vents. A base panel can be provided to cover the roof deck and form a smooth substantially sealed air duct for passage of the air. Upstanding wind baffles are disposed outboard of and spaced from the vents. One or more tangential impellers is rotatably mounted in the pace between the vents and wind baffles and can be free spinning or driven by an electric motor. Rotation of the tangential impellers creates a cross-flow fan effect that draws air forcibly from beneath the center panel and exhausts it to ambience. The attic space is thereby actively ventilated.

Abstract: An exhaust fan covering system features a cover body with an open end and at least one opening extending through the cover body. An air filter is arranged to be supported on the cover body between the at least one opening and the open end to force airflow to pass through the filter. An air filter for an existing exhaust fan cover features a frame arranged for support on the exhaust fan to carry filter material such that unobstructed portions of the material are positioned between the at least one opening and the open end of the cover. A filter kit for exhaust fan covers of different sizes features a piece of filter material and at least one template dimensioned for placement over the piece of filter material to define a guide for cutting of the piece of air permeable down to fit an exhaust fan cover of known dimensions.

Abstract: This patient isolation module has a transparent cubicle mounted over an hospital bed. This cubicle has a rectangular room-air intake opening at one end thereof, and an air treatment unit mounted outside the other end. The air treatment unit has fan inlet openings communicating inside the cubicle and forming a crown over the head of the bed. The air treatment unit draws air from the cubicle and causes a stream of fast-moving air to move along the cubicle, in a toe-to-head direction relative to a patient laying in the hospital bed. The air stream defines a hood-shaped envelope extending over and along both sides of the bed, to better separate a patient's breathing zone from health-care workers standing near that patient's bed.

Abstract: Disclosed herein is a fan cylinder for a cooling tower, which is configured to prevent the air discharged from the cooling tower from flowing back thereinto. The fan cylinder is fixed to the upper side of the cooling tower, and is configured to mount a cooling fan therein. The fan cylinder comprises a linear portion having a constant inner diameter, and mounted therein with the cooling fan; an inlet portion connected at an upper end thereof to a lower end of the linear portion, and having an inner diameter increasing downwardly; an extension portion connected at a lower end thereof to an upper end of the linear portion; and having an inner diameter increasing upwardly, and an outlet portion connected to an upper end of the extension portion, and having an inner diameter decreasing upwardly.

Abstract: A waterproofing and humidity control system is provided for a building which includes drain members located in trenches provided in ground beneath and adjacent the basement of the building. A suction and fan and motor assembly is located within a housing positioned within the building. Conduits communicate with the drain members and the motor and fan housing. An exhaust vent is located in the wall of the building spaced from the motor housing and has an air inlet and outlet. A separate conduit or duct communicates with and connects the inlet of the vent with an outlet of the motor and fan housing. The duct may extend between joints in the wall of the building. An adapter conduit is used with the system and is positioned between the motor and fan housing and the duct. The adapter conduit has portions which are offset from each other to allow the fan housing to be positioned in front of a finished basement wall.

Abstract: A ventilator comprising a cylindrical housing the intake of which is connected to a coaxial cylindrical conduit of smaller diameter, an electric motor axially mounted in the housing, of small diameter relative to that of the housing, and on the shaft of which is fixed a wheel consisting of blades, each having a shape that all the cross-sections of a blade through planes parallel to the axis of the housing are parallel to said axis and the vanes orienting the air stream, integral with the inner side of the housing, distributed at the periphery of the housing and each including at least a curved part which, located on the side of the housing intake, is housed in an annular space comprised between the housing and the virtual cylindrical surface extending the air intake.

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 vacuum airtight hard plastic room (like a room size food storage container) for portablity from hospital to hospital for a cancer free surgery, a plastic room (a giant plastic container) thats airtight, Vacuum to zero level oxygen, so when a incision is made during surgery to remove the cancer that is a spreadable cancer from oxygen, there is no oxygen to come Into contact with the cancer therefore the cancereous tissues could be remove successfully with out spreading further during surgery, the patient, doctors, nurses will be supplied with oxygen tanks, and mask, before and during surgery.

Abstract: A livestock facility exhaust system to remove a majority of the dust and other such odorous airborne particulate material from air exhausted by power ventilation equipment from a livestock confinement building and without a significant increase in static pressure within the ventilation system. This is accomplished by a free standing enclosure of high strength air permeable material supported by a hoop structure around the exhaust end of the containment building of the livestock facility. Exhausted air enters the enclosure and is temporarily contained therein. Air circulates around impaction surfaces in the enclosure that promote precipitation of airborne particulates from the air stream. A discharge opening is located at or near the top of the enclosure. Exhaust air rid of most of the airborne particulates moves upward and out through the opening. The enclosure also serves to deflect outside wind from the fan orifices which helps to maintain fan performance.

Abstract: An apparatus for diverting condensate which forms inside an exhaust system. The exhaust system comprises an exhaust side in which condensate may be formed, a suction side, and an exhaust fan between the exhaust side and the suction side and coupled to each of the exhaust side and the suction side to form a conduit through which gaseous fluid may be conveyed. A hollow tube having a first open end and a second open end is provided. The first end is coupled to the exhaust side and the second end is coupled to the suction side so that the hollow tube communicates between the exhaust side and the suction side in a manner bypassing the exhaust fan. A means exists inside the exhaust side for diverting condensate away from the exhaust fan apparatus. The means is positioned to channel condensate into the first open end of the hollow tube.

Abstract: A kit for reducing the level of radon in a dwelling. Containing a rain-proof exhaust vent hood housing an axial fan, and a suction pipe attached to a length of flex-duct. The kit can be easily installed by most homeowners. The installer simply cuts a hole in the band-board atop the foundation wall of the dwelling, inserts the assembled vent hood and suction pipe in the band-board opening, attaches the proximal end of a length of flex-duct and positions the distal end of the flex-duct into a de-pressurization point in the dwelling. An existing sump pump well or drain tile field can serve as a de-pressurization point.

Abstract: A cat odor eliminating system including a connector having an open inner end, an open outer end, and a hollow interior. A fan is disposed within the connector. A length of tubing is coupled with the open outer end of the connector. The length of tubing has an open free end. An adapter plate is provided that is dimensioned for covering the vented top of the cover of the cat litter box. The adapter plate has a central opening with a collar extending upwardly therefrom. The collar is coupled with the open free end of the length of tubing.

Abstract: A portable environmental control system for evacuating particulate laden, toxic, and explosive gasses from an interior space includes a flexible partition for erection at the interior space, and a first section of flexible duct connected to the partition and to an electric motor driven blower unit having an explosion proof ducted fan. A second section of duct is connected to the blower unit and may be connected to a filter unit mountable in a window of an interior room or to a collapsible plenum having plural filter units mounted therein for treating and returning air evacuated from the space back into the space. The blower unit may be placed within a space having a high concentration of explosive gasses for evacuating the gasses by way of an elongated duct section connected to an elevating mechanism to discharge gasses out of doors above ground level.

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: This disclosure relates to an affordable kit for reducing the level of radon in a dwelling. This inexpensive kit contains an efficiently designed rain-proof exhaust vent hood housing an axial fan, and a suction pipe attached to a length of flex-duct. The kit can be easily installed by most homeowners. The installer simply cuts a hole in the band-board atop the foundation wall of the dwelling, inserts the assembled vent hood and suction pipe in the band-board opening, attaches the proximal end of a length of flex-duct and positions the distal end of the flex-duct into a de-pressurization point in the dwelling. An existing sump pump well or drain tile field can serve as a de-pressurization point, thereby making the kit even easier to install.

Abstract: A climate control system includes an air evacuation and ventilation system thereof operable to withdraw air from an outflow air duct system and ventilate the withdrawn air to the outside prior to the system treating air withdrawn from an interior space of a building through an inflow air duct system. The air evacuation and ventilation system includes a ventilation duct having a first end in communication with an air outlet junction box and a second end having an opening located outside the building, an exhaust fan, supportably mounted within the junction box, for drawing air out of the outflow air duct system and into the ventilation duct, and a damper, supportably mounted within the junction box and pivotable between a closed position in which the damper prevents air from flowing into the ventilation duct and an open position in which air is drawn into the ventilation duct.

Abstract: A system for stabilizing, moderating and/or controlling the temperature of an outdoor enclosure, such as a network interface device, using room-temperature air from the associated building. A fan draws the room temperature (or moderate-temperature) air through a conduit from the interior of the dwelling to the outdoor enclosure. The outdoor enclosure is temperature-stabilized as indoor air flows through it. The air may flow through the same conduit that accommodates the data lines. A power line for the fan may be located in the same conduit. The system may be arranged to prevent insects and contaminants from entering the enclosure.

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 bathroom ventilation air inlet is mounted in conjunction with a toilet paper dispenser. Activation of a suction source connected by conduit to the inlet draws air from the bathroom, removing odour and moisture. The system also operates using a central vacuum system as a suction source. In such case the air inlet has a valve to seal and open the air inlet.

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: A powered exhaust fan for ventilating structures, especially well suited for roof ventilation, provides a motor driven fan assembly supported by a support assembly beneath an opening in a roof structure. The fan assembly further includes an air deflector assembly housing an impeller driven by the motor. The air deflector assembly also includes an intake portion and an exhaust portion. The fan assembly is positioned so that rising warm air is drawn into the intake portion by the rotating impeller and is directed into the inner surface of the air deflector assembly, out of the exhaust portion and then out through the roof opening. The positioning of the exhaust fan below the roof minimizes the negative aesthetic impact of the exhaust fan and allows it to be installed with existing passive ventilation systems.

Abstract: An air cleaning device for reducing the nosocomial and airborne transmission of diseases, such as tuberculosis, pertussis, influenza and measles. The device is positioned at the wall behind a hospital bed and allows for the removal of localized room air at the patient's bed and creates an envelope of constantly moving air past the patient into the inlet of the device. The air currents that are so generated capture airborne particles, e.g., as droplet nuclei, arising from the patient before they are allowed to disperse throughout the room so as to reduce the possibility of exposure of patient generated ariborne pathogens to healthcare workers or others. The air source capture velocity profile is such as to provide a negative pressure at the inlet thereto and a negative pressure within the room and the captured air can be both appropriately irradiated and filtered to purify the air stream which exits from the device.

Abstract: Device for drainage of contaminated urban atmospheres, including a plurality of air propellers, with an air intake below or on the side thereof and with an air output oriented upward; towers having a height greater than 100 meters; supports on which the air propellers are fixed, the supports capable of sliding vertically over the towers such that the supports can be immobilized within a stratus of hypercontaminated air that forms over some urban areas during anticyclonic periods and/or with thermal inversion, in such a way as the air propellers suction supercontaminated air from the stratus and project the supercontaminated air upward to a great height until the supercontaminated air reaches atmospheric zones naturally ventilated; and screens and mufflers to reduce acoustic intrusion produced by the air propellers.

Abstract: A method and apparatus for preventing and/or minimizing the formation of ice dams and icicles on a roof of a building having an unheated attic under said roof, which involves the steps of: (1) determining if there is an accumulation of snow on the roof, (2) determining ambient outdoor air temperature, (3) determining the temperature of air in the attic and (4) if there is an accumulation of snow on the roof and if the ambient outdoor air temperature is at or below freezing and if the attic air temperature is sufficient to cause melting of the snow on the roof, exhausting air from the attic.

Abstract: A radon mitigation method and system for mitigating the migration of radon into a building structure which includes an in-ground collection basin (200) formed in the foundation of the building structure. A liner (300) is located within the basin (200) with the liner (300) having both a sub-basin portion (320) and a rim portion (310). The rim portion (310) of the liner (300) forms a plenum chamber (400) between the liner (300) and the basin (200). The liner rim portion (310) is sealed to the basin (200) by a seal (410). A conduit (417) leads out of the building structure to remove gas from the plenum chamber (400). A pump (13) is operatively connected to the conduit (417) to exhaust gas through the conduit (17) to remove any radon within the plenum chamber (400) to the outside of the building structure.

Abstract: A dual purpose attic ventilator (10) comprising a hatch (12) with a structure (14) for mounting the hatch (12) on a roof (16) of an attic (18) in a building (20) having an opening (22) therethrough. An attic fan (24) is also provided. A component (26) is for pivoting the attic fan (24) on the hatch (12). A person can open the attic fan (24) on the hatch (12) to climb out through the hatch (12) onto the roof (16) of the building (20). The person can close the attic fan (24) on the hatch (12), to allow the attic fan (24) to pull hot air out of the attic (18) through the hatch (12).

Abstract: A nail sculpting station (12) is provided having a plurality of workstations (14), each of the workstations (14) having a work surface 16, a customer arm rest (18) and an exhaust vent (20). A customer's nails are manicured and sculpted while disposed above one of the exhaust vents (20) such that fumes and dust created during the manicuring and sculpting of the customer's nails will be drawn into the exhaust vents (20). The exhaust vents (20) of each of the workstations (14) are connected to a central exhaust duct 26which passes through a central region (24) of the nail sculpting station (12) and through the ceiling (38) above the nail sculpting station (12). The fumes and dust are exhausted exteriorly of the air space within which the nail sculpting technician and the customer are located.