(under subclass 143) Implement including a reservoir* comprising a tubular wall defining an enclosure; and a member movable relative to, and in peripheral, substantially sealing engagement with, the wall; so as to cause a force-applying change in the density of air in, or the effective capacity of, the reservoir.
SEE OR SEARCH THIS CLASS, SUBCLASS:
141, for an implement including a follower which floats on the free surface of the coating material in the reservoir.
143, for a force-applying follower which is not substantially is sealing engagement with the reservoir wall.
150, for an implement including a piston and cylinder located in or at the feeder*.
