(under subclass 225) Subject matter wherein the deflector is an elongated strip twisted in a spiral shape about the axis of rotation of the chamber, or a segment of such a spirally shape strip.
SEE OR SEARCH THIS CLASS, SUBCLASS:
310, for a helical-type scraper in a stationary mixing chamber.
320, for a helical ribbon stirrer in a stationary mixing chamber.
338, for a deflector having curved surfaces and located in a stationary flow-through mixing chamber.
339, for such a deflector in the form of a helical ribbon.
