(under subclass 98) Systems in which the proportioning or correlating means includes mechanically interconnected flow displacement elements.
(1) Note. Flow displacement elements include primarily pump and meter arrangements and vanes or other elements exposed to the flow and shifted in response to variations therein, such shifting elements usually acting both as controlling and detecting means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
565+, for nonautomatic distribution systems including pumps.
