A flow-amplifying nozzle having a construction which facilitates production, reduces costs, and enhances the safety of such a nozzle in operation. Such construction is particularly suitable for relatively small-size nozzles designed to direct and amplify the flow of compressed air or other pressurized fluid. The nozzle is composed of two pieces, one being a rigid tube having a closed, tapered nose portion and a plurality of radial openings in the cylindrical portion immediately adjacent the nose, and the other being a collar extending about and secured to the tube's cylindrical portion. The collar redirects the flow of fluid discharged through the radial openings, causing it to be expelled forwardly over the tapered nose of the nozzle. Secondary air is entrained by the rapid flow of primary air and thereby amplifies the total flow of air directed by the nozzle.

A flow amplifying pump apparatus includes a body member that defines a flow passageway and a compressed air inlet. The body member includes a main segment and an insert segment which extends into a container and rotates relative to the main segment. A cover member which lies releasably secured to the body member supports a plug assembly. The plug assembly includes a plunger that defines a groove for cooperating with a protuberance in the cover member to guide the plunger along a predetermined, substantially linear path.

An air amplifier and method and system for using a source of compressed oxygen enhancer, such as nitrous oxide, to increase air flow into an internal combustion engine, providing increased power gain for the engine over the power gain provided by the addition of the oxygen enhancer alone. A source of compressed gas is fed into an air amplifier positioned in the air intake tube for the engine, such as a hose or other conduit which leads to, for example, the throttle body for the fuel injector system. The compressed gas, which includes or is made up of an oxygen enhancer, such as nitrous oxide, is fed into the air amplifier near the inner edge of the air intake tube, producing a Coanda effect, such that air intake into the engine is greatly increased. The device is useful in conjunction with oxygen enhancer systems, such as nitrous oxide kits for feeding nitrous oxide into the throttle body for fuel injected internal combustion engines.

An air flow apparatus for providing a continuous curtain of jetting fluid includes a body member defining: an elongate plenum chamber for receiving compressed fluid; at least one inlet opening; and an outlet opening or nozzle for discharging fluid from the plenum chamber. The apparatus also includes an elongate baffle disposed in the plenum chamber, longitudinally of the plenum chamber, between the inlet opening and the nozzle for isolating turbulence in the fluid when the fluid enters the plenum chamber without restricting the flow of the fluid.

This invention relates generally to pumps, and more particularly, to a new concept in pumps where the principle of operation is based on the change in momentum of a curved, fluid jet curtain, with the pump itself containing no moving parts.