(under subclass 340) Apparatus in which there is a supplemental chamber associated with the liquid receptacle, which is preliminarily filled with the liquid before discharge can be effected and which serves as means to trap a given quantity of fluid.
(1) Note. For the line between this subclass and subclass 342, see (1) Note in subclass 342.
SEE OR SEARCH THIS CLASS, SUBCLASS:
71+, for sprayers having indicators, meters, gauges and the like for performing a measuring function.
342, for devices having a trap chamber which provide a
continuous supply to the liquid outlet tube and see (1) Note above.
SEE OR SEARCH CLASS 222, Dispensing,
424.5+, for a dispenser comprising a supply container and a trap chamber.
