(under subclass 52) Dispensers having means responsive to the level of material to cause operation of some device. The material may be in a supply container, trap, passage, overflow receptacle, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
21, for selectively preset level responsive mechanism for determining a single trapped volume.
56, for control by level in a dispensing-receiver.
62, for float controlled pressure liquids.
SEE OR SEARCH CLASS
4, Baths, Closets, Sinks, and Spittoons, appropriate subclasses for water closets with liquid level controls. 137, Fluid Handling,
386+, for liquid levels responsive or maintaining systems.
141, Fluent Material Handling, With Receiver or Receiver Coacting Means,
192+, for automatic control of flow cut-off or diversion.
184, Lubrication,
103.1+, for constant level lubricators.
221, Article Dispensing, appropriate subclasses for article dispensing devices not otherwise provided for including empty supply source responsive means, such devices being classified in
17+, and/or 108+ of that class (221).
414, Material or Article Handling,
295, and 296 for a static receptacle and means for charging or discharging the receptacle and wherein either the position
of the charging means (subclass 295), or the drive of a charging conveyor (subclass 296), is responsive to the level of material in the receptacle.
431, Combustion, 64, for a fuel burner having means maintaining a constant fuel level in a combustion zone.
