(under subclass 135) Dispensers having unitary discharge assistants, in which those portions which contact the material dispensed have a reciprocating motion (i.e., do not rotate or swing about an axis) and which unit acts on material from all sources.
(1) Note. By "unitary discharge assistants" is meant those structures which are so interconnected structurally by means other than or in addition to relatively moving operating means as to both prevent relative motion and compel motion together.
SEE OR SEARCH THIS CLASS, SUBCLASS:
361, and see the notes thereto for other combinations having reciprocating trap chambers or discharge assistants.
