US PATENT SUBCLASS 73 / 204.21
.~.~ With fluid flow deflector or restrictor (e.g., baffle, constriction)

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

861  DF  VOLUME OR RATE OF FLOW {23}
204.11  DF  .~ Thermal type {9}
204.21.~.~ With fluid flow deflector or restrictor (e.g., baffle, constriction)

DEFINITION

Classification: 73/204.21

With fluid flow deflector or restrictor (e.g., baffle,

constriction):

(under subclass 204.11) Subject matter having an element for modifying the direction, or the cross-section area, of a portion of the fluid flow.

SEE OR SEARCH THIS CLASS, SUBCLASS:

202.5, for a restrictor combined with a testing bypass or shunt.

861.52+, for nonthermal flow measuring with a restrictor in the flow path.

SEE OR SEARCH CLASS

138, Pipes and Tubular Conduits,

40+, for a restrictor in a conduit.