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US 4,276,943 AGranted
Fluidic pulser
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 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.
Claims8
A device for producing pulses in a fluid body comprising,
- bi-stable fluid amplifier means for establishing a stable flow of fluid through one outlet thereof, said bi-stable amplifier having dual outlets,
- vortex chamber means hving inlets on the periphery thereof and at least one outlet at the center thereof,
- said outlets of said bi-stable amplifier means entering said vortex chamber tangentially in opposite directions through said inlets on the periphery thereof,
- and control means associated with said bi-stable amplifier means for selectively diverting the stable flow in one outlet thereof and for establishing stable flow through the other of said dual outlets,
- whereby fluid flow through said amplifier means and said vortex chamber means is restricted to a first degree during diversion of the stable fluid flow, and to a second greater degree when the stable flow passes through only one of said outlets, thereby producing pulses in said fluid each time said flow is diverted.
2 more elements
Dependencies are inferred from the claim text.