(under the class definition) Implement which includes a reservoir* and an element in the reservoir in contact with the free surface of the material, the element being movable with the material, either by force of gravity or adhesion with the material, and continuously conforming to the cross-sectional area of the reservoir.
(1) Note. The follower usually serves the purpose of preventing leakage of the material at the end of the reservoir remote from the tool*, and may be a fluid (e.g., viscous) follower which prevents access of ambient air to the material in the reservoir.
SEE OR SEARCH THIS CLASS, SUBCLASS:
171+, for an implement wherein a follower within the reservoir is manipulated for movement relative to the level of material to produce force on the material.
SEE OR SEARCH CLASS
220, Receptacles, 216+, for a floating closure and subclasses 578+ for an internal closure-like member which rests on the unused content of a container.
