An aspirator may comprise an aspirator body defining an air channel and an inlet at a proximate end of the aspirator, and an inflatable barrel coupled to the aspirator body and defining an outlet at a distal end of the aspirator, wherein the inflatable barrel comprises a helical coil having a first interior volume and coupled about a barrel liner, wherein the barrel liner defines a second interior volume, wherein the air channel and the second interior volume define an airflow path extending from the air channel through the second interior volume the inflatable barrel.

An aspirator for an evacuation assembly includes a duct defining a flow axis with an upstream portion and a downstream portion, a vane spanning the upstream portion of the duct, and a nozzle. The nozzle has an outlet, is supported by the vane, and is positioned within the upstream portion of the duct. The outlet is laterally offset from the flow axis and is axially overlapped by the vane to limit resistance to a primary gas flow entering the duct through the outlet of the nozzle. Evacuation assemblies are also described.

An aspirator includes an aspirator body having at least one flapper door designed to allow intake of a gas from an environment of the aspirator. The aspirator also includes an aspirator barrel having an end tip, a compressible spring, and a fabric positioned about the compressible spring, and designed to extend in response to receiving the gas and to transfer the gas from the aspirator body to the inflatable flotation device. The aspirator also includes a gas valve designed to receive a fluid from a compressed fluid source. The aspirator also includes a nozzle positioned within the aspirator body, coupled to the gas valve, and designed to receive the fluid via the gas valve and to direct at least a portion of the fluid towards the aspirator barrel such that the at least one flapper door allows the gas to flow from the environment into the aspirator barrel.

A static bilge pump has a body surrounded by a shell, forming a motive plenum therebetween. Inlets in the front of the shell allow a motive fluid to enter the motive plenum. The motive plenum tapers, decreasing in cross-sectional area along with width as it moves toward its aft, and ends at a motive nozzle. The body houses a suction chamber in fluid communication with a suction inlet that is in fluid communication with the bilge of a boat. Ejectors are positioned proximal to and between the motive nozzle and the discharge outlet. When the static bilge pump is exposed to fluid flow from its front to its stern, such as when a boat is in motion, water enters the motive inlets, filling the motive Plenum and acting as a motive fluid. The motive fluid is ejected at high pressure from the motive nozzle, creating suction at the ejectors and discharging the motive fluid as well as liquid with in the suction chamber out the discharge outlet.

An aspirator may comprise an aspirator body defining an air channel, an aspirator inlet disposed in the aspirator body whereby the air channel receives a compressed fluid, a venting aperture disposed in the aspirator body in fluid communication with the air channel, and a venting valve disposed in the venting aperture. The venting valve is in an open position and the venting valve moves to a closed position in response to the compressed fluid being received by the aspirator.

An aspirator may include an aspirator body comprising an outer wall and an inner wall, the inner wall defining a body channel. The aspirator may include an aspirator body including an outer wall and an inner wall, the inner wall defining a body channel. The aspirator body may include a plenum disposed between the outer wall and the inner wall. The aspirator body may include a plurality of apertures disposed between the outer wall and the inner wall and defined by a side wall and the plenum. The aspirator may include an aspirator barrel comprising a barrel outer wall and a barrel inner wall, the barrel inner wall defining an air channel. The air channel may be in fluid communication with the plenum.

A portable device for inflating at least one envelope includes an inlet for surrounding air (1), at least one nonreturn valve, at least one compressed gas inlet (2), at least one intake chamber (3), at least one connection, such as an acceleration cone (5), with a longitudinal median symmetry axis (X, X), arranged in the extension of at least one intake chamber (3), and connected to at least one inflatable envelope, and an intermediate chamber connecting at least one compressed gas inlet (2) to at least one intake chamber (3). The intermediate chamber and the at least one intake chamber (3) are separated by a wall arranged transversely to the axis (X, X) and connected by at least one orifice located in the transverse wall (8).

The invention relates to a ventilation device intended to generate an air flow in the direction of a motor vehicle heat exchanger, comprising: spaced-apart ducts, at least one air manifold having orifices, each duct leading at one of its extremities into a separate orifice of the air manifold,
each duct being provided with at least one opening for ejecting an air flow passing through said duct, the opening being separate from the extremities thereof and situated outside the air manifold,
at least one duct being mounted so as to be orientable between a closed position and an open position, the device being configured to allow more air to pass through in the open position than in the closed position.

An ejector includes: a Laval nozzle in which a first channel which has a throat and along which a fluid flows in a first direction is formed; and a main body which is formed in a tubular shape, in which the Laval nozzle disposed therein is fixed to a part of an inner surface thereof, and in which a second channel is formed between the rest of the inner surface and the Laval nozzle. The second channel is disposed at a first side with respect to the first channel in a second direction perpendicular to the first direction, and an opening formed in an end of the first channel at a downstream side is inclined to be approaching to the first side toward the downstream side.

A fuel system includes a fuel pump having an inlet and an outlet. The fuel system also includes a jet pump assembly having a first fuel passage defined by a first tube, the first fuel passage having a first fuel passage inlet and a first fuel passage outlet; and a second fuel passage defined by a second tube and connected to the outlet of the fuel pump, the second fuel passage having an exit orifice which discharges a first flow into the first fuel passage which draws a second flow into the first fuel passage through the first fuel passage inlet such that the first flow and the second flow combine in the first fuel passage and exit the first fuel passage through the first fuel passage outlet. The second fuel passage also has an initial orifice arranged upstream from, and in series with, the exit orifice.