Fluid oscillator
AssigneeThe United States of America as represented by the Secretary of the Army
InventorAllen B. Holmes
Life of this patent
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Abstract
A telemetry system is disclosed which utilizes a fluid feedback oscillator n conjunction with a flow restricting device in order to generate pulses in a fluid. Means are provided to turn the oscillator on or off or to vary the frequency of oscillation, thereby permitting the transmission of information by means of the fluid pulses.
Claims6
A pulsing device having an inlet and alternate paths for fluid flow and means for generating pulses in a fluid entering said inlet and flowing through said device, comprising fluid feedback oscillating means for directing the fluid flow from said inlet to said alternate paths, and vortex valve means in communication with said paths for alternately increasing and decreasing resistance to fluid flow received from said alternate paths by reversal of vortical flow to generate said pulses,
- pulse regulating means for increasing the frequency of oscillation of said fluid feedback oscillating means above a threshold level precluding reversal of vortical flow for preventing generation of said pulses,
- said pulse regulating means comprising means for regulating the frequency of oscillation of said fluid feedback oscillating means below said threshold level to control the rate at which said pulses are generated.
A telemetry apparatus comprising means to gather data at a first location along a fluid body and provide signals indicative of such data, means responsive to said signals to generate pulses in the fluid body, and means to receive said pulses at a second location along said fluid body remote from said first location,
- wherein said means to generate pulses comprises a pulsing device having an inlet and alternate paths for fluid flow and means for generating pulses in a fluid entering said inlet and flowing through said device, comprising fluid feedback oscillating means for directing the fluid flow from said inlet to said alternate paths, and vortex valve means in communication with said paths for alternately increasing and decreasing resistance to fluid flow received from said alternate paths by reversal of vortical flow to generate said pulses,
- pulse regulating means for increasing the frequency of oscillation of said fluid feedback oscillating means above a threshold level precluding reversal of vortical flow for preventing generation of said pulses,
- said pulse regulating means comprising means for regulating the frequency of oscillation of said fluid feedback oscillating means below said threshold level to control the rate at which said pulses are generated.
Dependencies are inferred from the claim text.