US PATENT SUBCLASS 137 / 819-- .~.~.~ To cascaded plural devices

US PATENT SUBCLASS 137 / 819
.~.~.~ To cascaded plural devices

Current as of: June, 1999
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137 /	HD	FLUID HANDLING

803	DF	FLOW AFFECTED BY FLUID CONTACT, ENERGY FIELD OR COANDA EFFECT (E.G., PURE FLUID DEVICE OR SYSTEM) {11}
814	DF	.~ System comprising plural fluidic devices or stages {1}
815	DF	.~.~ Plural power inputs (e.g., parallel inputs) {3}
819		.~.~.~ To cascaded plural devices {2}
820	DF	.~.~.~.~> With feedback passage(s) between devices of cascade
821	DF	.~.~.~.~> With pulsed control-input signal

DEFINITION

Classification: 137/819

(under subclass 815) System provided with two or more fluidic devices arranged in a series array, and also provided with a connection from a power output passage of a first of said devices to a control input passage of a second of said devices that is downstream of said first device.

(1) Note. The connection described may be direct (as via a passage with two ends, one to a power output and the other to a control input) or may be indirect (as via a restrictor or storage tank) or may be supplemental (as via a second passage to the second device that adds to the effect of a primary control input to the second device).