(under subclass 3.21) Subject matter wherein the circumferential surface of the sheet conveyor engages the sheet by suction or air blast.
(1) Note. Although in most devices the gaseous fluid is air, either under suction or under pressure, or both, the use of a special fluid other than air (e.g., steam) is not barred.
SEE OR SEARCH THIS CLASS, SUBCLASS:
5, 11+, 20, for a device using a pneumatic feeding means.
94+, for a separator having a unidirectionally moving suction member or surface.
112, and 132, for a device wherein a suction assists a feeding means.
SEE OR SEARCH CLASS
221, Article Dispensing, 211, for an article dispenser using a suction separator.
