Abstract: An aspirator assembly for inflating an emergency slide. The aspirator assembly includes a bell housing, a mixing chamber, and a nozzle assembly. The bell housing includes a ring defining an inlet port at which a check valve is located and into which ambient air can flow. The mixing chamber has an outlet port, The nozzle assembly is located in the mixing chamber and includes plural passageway sections defining concentric rings and cross bars. The passageway sections include internal passageways in communication with plural nozzle jets through which a compressed air is introduced into the mixing chamber to mix with the ambient air. The passageway sections are of an airfoil shape cross-section having a rounded leading end directed towards the inlet port and a trailing end is directed toward the outlet port to reduce air turbulence within the mixing chamber.

Abstract: An insert for an air intake of a suction duct, the insert including an inner portion configured to extend within the suction duct, a mating portion configured for sealingly engaging the air intake, and an outer portion configured for extending outside of the suction duct. The inner portion includes a conduit having a central axis extending along an inlet direction at the inlet end and along an outlet direction at the outlet end, the inlet and outlet directions being non-parallel. The outlet end has a smaller cross-sectional area than that of the suction duct. The insert includes an inlet in fluid communication with the inlet end of the conduit. The outer portion includes a curved lip surrounding at least part of an inlet opening of the inlet, the lip configured to direct a flow into the inlet opening and toward the inlet end of the conduit.

Abstract: An aspirator assembly for inflating an emergency slide is disclosed. The aspirator assembly includes a bell housing, a mixing chamber, and a nozzle assembly. The bell housing includes a ring defining an inlet port at which a check valve is located and into which ambient air can flow. The mixing chamber has an outlet port, The nozzle assembly is located in the mixing chamber and includes plural passageway sections defining concentric rings and cross bars. The passageway sections include internal passageways in communication with plural nozzle jets through which a compressed air is introduced into the mixing chamber to mix with the ambient air. The passageway sections are of an airfoil shape cross-section having a rounded leading end directed towards the inlet port and a trailing end is directed toward the outlet port to reduce air turbulence within the mixing chamber.

Abstract: An in-line vapor trap for removing water and/or oil vapor from a compressed air line which includes a manifold having spaced coaxial inlet and outlet openings, a hollow base suspended from the manifold, and replaceable cartridges connecting the manifold inlet to the hollow base and connecting the hollow base to the manifold outlet. A honeycomb structure is disposed in the lower portion of the base within the enclosed volume defined thereby, and cooperates with the base side and bottom walls to define a zone of substantially zero air movement for collection of liquid droplets. A depression in the base bottom wall forms a liquid sump, and a drain opens into the sump for drainage of captured liquid.

Abstract: A pressure vacuum valve arrangment for the fitting to the vent pipe of a tank for the storage of volatile fuel comprises a first valve to open on increasing pressure of the tank to allow escape of air and vapors from the tank and a second valve adapted to open on decrease of pressure in the tank due to withdrawal of fuel to allow air to enter the tank. To the top is fitted a sleeve forming a venturi action to disperse the vapors into the atmosphere, and to the entry of the second valve is provided a bag filter to prevent dust entering the tank.

Abstract: A discharge apparatus for dispersing exhaust gases discharged into the atmosphere and eliminating the steam plume, is disclosed. A plurality of conical diffusing elements are supported in spaced nested relationship along the discharge axis of the exhaust duct. Continuous compressed air is ejected into the central portion of each conical diffusing element.

Abstract: An apparatus for discharging to the atmosphere, combustion gases containing sulphur trioxide, means are provided for injecting into the stream, prior to venting to the atmosphere, a selected quantity of diluting gas. The diluting gas and sulphur containing combustion gases are turbulently mixed to provide dilution of the sulphur trioxide in the combined effluent from the stack. In one embodiment, the diluting gases are injected through a pipe positioned axially in the stack, below the top. A column of diluting gas is injected at high velocity into the upwardly moving combustion gases to entrain, mix with, and dilute the sulphur trioxide in the combination gases prior to escape from the stack to the atmosphere. In an improved embodiment, an annular plenum is constructed around the stack at a point upstream of the top of the stack, and a plurality of pipes are directed inwardly radially and upwardly through the wall of the stack.

Abstract: Hot gases from a furnace or the like are fed to a core or inner tube that terminates at its downstream end at the upstream end of a larger-diameter mixing tube. A jacket surrounding the inner tube is formed with a plurality of compartments which are of increasing cross-sectional area toward the downstream end of the inner tube. A blower is connected to the upstream ends of the compartments or branches or the jacket and the downstream ends of these compartments are connected to a annular nozzle defined between the outside of the inner tube and the inside of the mixing tube. Thus air in the compartments is heated by the hot gases in the inner tube and expand so as to issue from the nozzle at high speed and entrain the gases in the inner tube in jet-pump fashion.