Class Information
Number: 222/343
Name: Dispensing > With discharge assistant (e.g., impeller, pump, conveyer, movable trap chamber, etc.) > With retractable projections
Description: Dispensers having projecting parts of the discharge assistant following a path variable with respect to other parts, to increase and decrease the extent of projection. The purpose is to facilitate picking up and discharging material, not to vary the discharge volume.
Patents under this class:
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