Abstract: A retaining and releasing device for an exhaust-gas extraction nozzle, which nozzle (5) is adapted for extracting exhaust gases from upwardly directed exhaust pipes (3 ) on vehicles, e.g. fire-fighting vehicles, when these vehicles are started and driven in premises for the vehicles, e.g. a fire station.

Abstract: A suction delivery system for removing surgical smoke from an operative site includes a hose having the configuration of a first tube and adapted to extend generally between a suction source and the operative site. A wand coupled to the distal end of the hose has the configuration of a second tube with first portions of the wand define a major suction inlet while second portions of the wand define a lateral opening which relieves suction pressure when the major inlet is blocked by tissue. A tip section of the wand includes a vane extending at least partially across the major opening and a strut extending to support the vane outwardly of the major opening. The tip section also includes means providing a laterally visible indication of the degree of contamination of the system.

Abstract: An exhaust fumes distribution system for use within a structure adjacent to a space in which a vehicle having an engine coupled to a vertically oriented, open ended, exhaust stack is to be located to discharge exhaust fumes out of the structure. The system comprises an actuatable blower, an elongated guide tube, a collapsible conduit, and a wireless transmitter and receiver. The guide tube has a hollow interior and a slot extending therealong and is mounted horizontally above the space so that the slot extends from a first position adjacent an entrance to the structure to a second, remote position. The collapsible conduit is located within the guide tube and is coupled to the blower. The conduit has an end portion including an inlet opening and is biased into an extended position within the guide tube so that the inlet opening is located adjacent the first position to receive the open end of the stack through the slot.

Abstract: Apparatus for inhibiting the flow of contaminants in an exhaust enclosure toward an individual located adjacent an opening into the exhaust enclosure by providing a gas flow toward a source of contaminants from a position in front of an individual to urge said contaminants away from the individual toward a gas exit port. The apparatus comprises a gas mani-fold which may be worn by a person as a vest. The manifold has a series of gas outlets on a front face thereof facing away from the individual and toward the contaminants to thereby provide a flow of gas from the front of the individual toward the contaminants.

Abstract: An external middle joint for an extraction arm has one first half and a second half, an inner tube and an outer tube, the inner tube being connected to a fan mounted on a wall, the outer tube having an extraction hood. The first half is connected to the outer end of the inner tube and the second half is connected to the inner end of the outer tube. Each half has a connecting piece connecting the first half to the outer end of the inner tube and connecting the second half to the inner end of the outer tube. A length of hose interconnects the outer end of the inner tube and the inner end of the outer tube, so that a continuous channel is formed from the fan to the extraction hood. Each half has two legs extending on either side of the hose, each leg being articulated to the corresponding leg of the opposite joint half by means of bolt connections. The latter have a bolt which is non-rotationally mounted in one of the legs of the other joint half and which support a knob.

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 device for connecting an exhaust suction hose (1) to the exhaust pipe (3) of a vehicle (4) in such a way that the exhaust fumes of the vehicle (4) are carried away via the exhaust suction hose (1). The exhaust suction hose (1) being disposed at the top of a workshop or like premises and a dependent part of the exhaust suction pipe (1) being connectable to the exhaust pipe (3) of a vehicle (4) in the premises. The exhaust suction pipe (1) being kept connected to the exhaust pipe (3) while the vehicle is driven about in the premises, and the exhaust suction hose (1) being automatically released from the exhaust pipe (3) when the vehicle (4) is driven out of the premises.

Abstract: An over-flow tank for a semiconductor wafer washing apparatus includes a pair of opposed extensions integrally formed on a pair of opposed side walls of the tank. One of the extensions is provided with pipes and/or other devices. This form of attachment prevents formation of a stepped portion on which dust may accumulate. The extensions also act to guide the flow of clean air over the tanks, so that vapor formed in a chemical liquid tank in one row of such tanks is prevented from entering a pure water tank in an adjacent row.

Abstract: A hazardous waste removal assembly includes a generally rectangular flexible bag having a front panel and a back panel joined at a lower portion of the bag to form a collection chamber. The bag is sealed such that it is impermeable to dust and other particulate matter. The assembly also includes at least one glove sleeve fashioned through the front panel of the bag to permit an operator to remove abestos from a segment of the enclosed conduit, while maintaining subatmospheric air pressure within the bag. A replacement air intake inlet valve is positioned on the front or back panel to permit the ingress of ambient air into the bag while concomitantly preventing egress of air or particulate contents out of the bag.

Abstract: An elongate flexible conduit is in pneumatic communication with a rigid conduit, wherein the rigid conduit is defined by a reduced diameter relative to the flexible conduit, and wherein an air delivery tube is directed interiorly of the rigid conduit with a leg thereof coaxially aligned with the rigid conduit to effect negative pressure within the flexible conduit for evacuation of gaseous fumes of liquid.

Abstract: Apparatus for controlling and eliminating vapor emissions at a manicure work station including a housing disposed about an isolation chamber for accommodating one or more containers of vapor emitting materials. A plenum chamber is in communication with the isolation chamber and a fan delivers a flow of air from the isolation chamber into the plenum chamber and through a filter disposed between the plenum chamber and the ambient atmosphere.

Abstract: A waste management disposal system which disposes of both solid and aerosol waste includes a housing divided into a solid waste containment area and a negative pressure plenum for drawing aerosol waste away from the solid waste containment area. A funnel is provided for guiding solid waste into the waste containment area and the negative pressure plenum draws the aerosol waste in a path orthogonal to the funnel. A filter is provided for filtering the aerosol contaminants from the air upon which it is being transported.

Abstract: A quick-release adapter for connecting the inlet of an exhaust removal hose to the outlet of a tail pipe of a vehicle with an internal combustion engine while minimizing exhaust leakage. The adapter includes three disk-like permanent magnets pivotably mounted on the inlet of exhaust removal hose and three receptacle-shaped magnetic connectors secured to the outlet of the tail pipe for engaging the magnets and mating the exhaust removal hose to the tail pipe. The exhaust removal hose is thus readily connectable to and disconnectable from the tail pipe.

Abstract: An exhaust distribution system for a building to automatically attach/detach to a vertical exhaust stack of a vehicle located within the building. The system includes an elongate track for guiding movement of a trolley therealong from a first position adjacent the entrance of the building to a second remote position at which the vehicle is to be parked. The trolley supports one end, e.g., a mouth, of a flexible hose and includes a guiding device to orient the hose's mouth with respect to the exhaust stack to receive the exhaust fumes therefrom. An assembly automatically biases the trolley to the first position on the track. The system also includes a blower, a pressure responsive sensor, and a solenoid controlled damper to automatically vent the exhaust fumes out of the building whenever the pressure in the hose exceeds a predetermined level, e.g., a pressure level which would exist if the vehicle's motor was running.

Abstract: An exhaust extraction system for use in a welding work station is provided which operates to exhaust the noxious fumes from the welding site when the welding operation is being carried out and for a limited period thereafter. A supply of an inert shielding gas is delivered under pressure to both the welding side and the damper control mechanism. In response to changes in pressure in the supply line of the inert shielding gas, the damper control mechanism is operable to close the damper when the welding machine is deactivated and to open the damper when the welding machine is activated.

Abstract: Surgical procedures are conducted in a protected environment wherein a laminar flow of micro filtered air is passed from a top to a bottom of an enclosure with transparent panels defining a space for manual access of the surgeon's hands and arms. Air circulation is forced through a high performance HEPA filter between an inlet including the bottom of the enclosure and an outlet at the top, both including panels with an array of apertures for establishing substantially laminar flow. A duct along an endwall of the enclosure carries filtered air to the top. A positive pressure differential is maintained between the inside of the surgical compartment and the outside, to protect the patient operative site from contamination by airborne particles. The enclosure rests on top of a mobile cabinet and has access ports for connection lines and also for bringing the surgical subject into the enclosure. For experimental animals, an access port for cage boxes can be provided.

Abstract: A focussed ventilation method and apparatus for a work space, in the method and apparatus suction is focussed on the source of impurities of the work spot and/or on the source of excess heat, and the operation of the focussed suction is assisted with the air blown from a wide surface area at a low speed from an incoming air means.

Abstract: A sealed portable isolation enclosure for use in removing asbestos material from ceiling or other elevated asbestos-containing structures including a booth and an adjustable ceiling-contacting plenum for accommodating ceiling of various heights. Disposed between the booth and the plenum is a flexible transparent film for enclosing and sealing the spaced formed therebetween regardless of the elevation of the plenum relative to the booth. The enclosure is equipped with EPA approved vacuum and ventilation systems for filtering and ventilating the contamainated air therein. A disposable bagtrap door system is provided for the disposal of the asbestos-containing materials. In addition, the enclosure may also include a shower system within the enclosure.