Fluid oscillators

Claim 2

A fluid device for producing oscillations at a constant frequency comprising fluid inlet and outlet means, a source of power fluid, means for directing the power fluid along a normal path to said outlet means, a resonant chamber disposed adjacent to said normal fluid path so that the flow of power fluid in said normal fluid path creates a vacuum in said chamber to cause the power fluid to deviate from said normal path into the vacuum chamber until pressure is restored therein at which time the fluid returns to its normal path, said chamber including a second cavity connecting with said chamber and adapted to maintain a relatively constant frequency of oscillation of the power fluid flow with changes in pressure at said fluid inlet said second cavity comprising an elongated horn-shaped cavity having a closed end and an open end communicating with the resoNant chamber.

Claim 3

A fluidic generator for producing an electromotive force comprising a fluid oscillator for producing fluid oscillations, an electromagnetic generator including an armature and a coil adapted to produce an electromotive force in response to vibrations of said armature, and means to convert the fluid oscillations produced by said fluid oscillator into mechanical forces to vibrate said armature, said fluid oscillator for producing the periodic fluid forces having a fluid inlet and fluid outlet means, a means for directing a flow of power fluid along a normal path from said inlet means to said outlet means, a resonant chamber disposed adjacent to said normal fluid path so that said flow of power fluid creates a vacuum in said chamber which in turn causes the flow of power fluid to deviate from its normal path into the vacuum chamber until pressure is restored therein at which time the fluid returns to its normal path, said oscillator includes a second cavity connecting with said resonant chamber comprising an elongated horn-shaped cavity having one end closed by a movable diaphram and having the other end open into said resonant cavity.

Claim 4

A fluidic generator for producing an electromotive force comprising a fluid oscillator for producing fluid oscillations, an electromagnetic generator including an armature and a coil adapted to produce an electromotive force in response to vibrations of said armature, and means to convert the fluid oscillations produced by said fluid oscillator into mechanical forces to vibrate said armature, said fluid oscillator for producing the periodic fluid forces having a fluid inlet and fluid outlet means, a means for directing a flow of power fluid along a normal path from said inlet means to said outlet means, a resonant chamber disposed adjacent to said normal fluid path so that said flow of power fluid creates a vacuum in said chamber which in turn causes the flow of power fluid to deviate from its normal path into the vacuum chamber until pressure is restored therein at which time the fluid returns to its normal path, said oscillator includes a second cavity connecting with said resonant chamber comprising an elongated horn-shaped cavity having one end closed by a movable diaphram and having the other end open into said resonant cavity.

Claim 5

The fluidic generator of claim 2 wherein the force converting means includes a rod-like element having one end attached to said movable diaphragm and the other end attached to said armature whereby changes in pressure due to the fluid oscillations within the resonant cavity of the fluid oscillator cause the diaphragm to expand and contract to thereby cause the armature to vibrate by means of said rod-like element.

Claim 6

A fluid oscillator for producing oscillations of constant frequency including: a. a fluid inlet means; b. a fluid outlet means; c. a resonant cavity for producing oscillations of fluid flow; and d. a stabilizing means operably attached to said resonant cavity for maintaining the frequency of the oscillation of fluid flow relatively constant with changes in input pressure, said stabilizing means comprising an elongated horn-shaped cavity having a closed end at its large diameter portion and having an open end at the smaller diameter portion connecting into said resonant cavity.

Claim 7

A fluid oscillator for producing oscillations of constant frequency including: a. a fluid inlet means; b. a fluid outlet means; c. a resonant cavity for producing oscillations of fluid flow; and d. a stabilizing means operably attached to said resonant cavity for maintaining the frequency of the oscillation of fluid flow relatively constant with changes in input pressure, said stabilizing means comprising an elongated horn-shaped cavity having a closed end at its large diameter portion and having an open end at the smaller diameter portion connecting into said resonant cavity.