Abstract: A fluid telemetry system is disclosed which utilizes an improved pulsing ice. The pulser comprises a bistable fluid amplifier. Both outlets of the bistable fluid amplifier communicate tangentially with a vortex chamber. A pulse in the fluid entering the amplifier may be produced each time the fluid flow is diverted from one outlet to the other.

Abstract: A substantially funnel-shaped vortex chamber valve having a longitudinal axis assuming an angle to the vertical which is greater than 30.degree., having at least one substantially tangential inlet nozzle disposed in the vicinity of the lowest point of the largest cross-sectional area of the chamber, and an eccentrically arranged venting port disposed in the vicinity of the highest point of the chamber, the venting port having a feedline extending above the level of the head race.

Abstract: A fluid mixing apparatus introduces a controlled amount of gas into a liquid flowing through a conduit.The fluid mixing apparatus incorporates a flow control device which is constructed to produce a variable impedance to fluid flow through the control device. The impedance varies in a pre-planned relationship to the pressure differential across the flow control device and to an acceleration of the flow within the control device.The control device has an outlet connected to the interior of the liquid carrying conduit and has a gas inlet for supplying the gas to the interior of the control device.In a specific embodiment, the flow control device is a vortex chamber which produces rotation of the gas flowing through the gas inlet. This rotation produces a self-choking effect on the gas flowing from the inlet to the outlet.

Abstract: A fluid flow regulator controls the amount of fluid flow or pressure of the fluid flowing through the regulator by producing an impedance to flow through the regulator which varies in relationship to the pressure differential across the regulator and which also varies in relationship to an acceleration in the fluid flowing through the regulator. The regulator has a shape which produces an acceleration in the fluid flowing through the regulator to cause the flow itself to vary the impedance to flow through the regulator.In a specific embodiment the fluid flow regulator is a vortex chamber and can be used as a replacement for existing, mechanical PCV valves for internal combustion engines. The flow regulator of the present invention provides a variable orifice valve function without any moving parts.

Abstract: An attenuator, for use in a fluid system for reducing pulsations and transients, having a vortex chamber with a plurality of tangential inlets and one or more outlets with converging nozzles being provided in the inlets to increase the inlet flow velocity and to provide diode action. At least one elbow is provided in the outlet line adjacent the vortex chamber outlet with a second elbow being provided at a distance from the elbow adjacent the vortex outlet, approximately equal to the radius of the vortex chamber. The second elbow is not needed when outlet line discharges to a sump or to the atmosphere.

Abstract: A fluidic throttling flow controller for controlling core cooling flow in a uclear reactor. Increased temperature of cooling flow adajcent the core increases the flow adjacent the core and is used to control a focused jet amplifier which in turn controls a vortex valve to reduce flow and shut down the reactor when overheating occurs.

Abstract: Pressurized motive fluid flow passes through a single fluidic vortex orifice to opposite chambers of a differential area, double acting, linear servo-cylinder. While shifting in one direction the vortex orifice severely restricts the flow to the fluid chamber of the motor which is contracting in size so as to permit rapid movement of the piston in that direction, and whenever the piston is moving in an opposite direction the vortex orifice allows substantially unrestricted fluid flow to the same chamber which is now expanding in size, so that the piston can shift rapidly in this opposite direction.

Abstract: The invention provides a shock absorber for wheeled and track type vehicles in which the conventional compression valve is replaced by an acceleration controlled vortex throttle. A beam deflection amplifier introduces fluid radially, tangentially or at an intermediate position into a vortex chamber under control of an accelerometer. The vortex throttle is controlled such that in the presence of acceleration of a wheel relative to the ground shock motion is lightly resisted while long term movement of the wheel toward the vehicle is strongly resisted so that the wheel more closely follows the terrain contour with reduced energy delivered by the wheel to the vehicle body.

Abstract: An apparatus for regulating the flow rate of a fluid, comprising a casing having an annular or cone-shaped fluid passage, for radial flow (inwardly or outwardly) between an inlet and outlet which are spaced radially and form unobstructed flow paths to the whole of the fluid passage. The geometry of the fluid passage is defined for a compressible and incompressible fluid so that laminar flow is achieved in the fluid passage. The apparatus further provides a very rapid dynamic response, essentially free of hysteresis, and substantially no internal generation of fluid flow turbulence resulting in a minimum of noise and freedom from cavitation. In an adjustable configuration the apparatus provides a proportional fluid valving function. In a nonadjustable configuration the apparatus provides a laminar flow restriction.

Abstract: An automatic volume control for centrifugal pumps wherein a centrifugal pump is arranged with its suction oriface facing downwardly into an open top tank having a tangential feed channel. The tank is placed in a receiver for the liquid to be pumped, at a level wherein the tank and the feed channel is submerged below the intended maximum liquid level. An upwardly directed air line outlet may be placed in the bottom of the tank in axial alignment with the pump.

Abstract: The sensor comprises an operational circuit consisting of fluidic elements. The detecting sensor causes variation in the pressure of a control fluid supplied to the operational circuit. The variation of pressure, depending on the rotational speed of vehicle wheels, serves to detect the vehicle speed from the pressure in the control fluid.

Abstract: A fluidic implementation of a constant mass airfuel ratio fuel-injection system which may be utilized, for example, in an internal combustion engine. The system includes a fluidic mass air flow sensor that produces a pressure oscillation in direct proportion to the mass air flow to the engine. The frequency of this oscillation is utilized to control a fuel flow metering device which delivers a fixed amount of fuel per oscillation cycle. In one preferred embodiment, the metering device may comprise a fixed displacement piston pump. In an alternative embodiment, the metering device comprises a constant pulse-width fluidic amplifier.