US PATENT SUBCLASS 137 / 824
.~.~.~ Co-lineal, oppositely-directed power inputs (e.g., impact modulator)

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}
822  DF  .~ Plural power inputs to single device {1}
823  DF  .~.~ Intersecting at interaction region (e.g., comparator) {1}
824.~.~.~ Co-lineal, oppositely-directed power inputs (e.g., impact modulator)

DEFINITION

Classification: 137/824

(under subclass 823) Device wherein said separate lines merge into a single line common to both said passages, and said streams impinge against one another coaxially in said common zone.

(1) Note. The device of this subclass is usually referred to as "impact modulator".

(2) Note. This subclass provides for an exception to the statement in (1) Note of subclass 822 that two power input streams are provided. A patent having claimed disclosure of only two co-lineal passages for input of oppositely-directed fluid will be originally classified in this subclass 824 even if one of such inputs is termed a "control stream", since it is clear that the "control stream" is effectively equivalent to a power input.