(under subclass 324) Apparatus in which at least one filter and its support moves with respect to another, usually for cleaning while at least one remains in filtering service.
SEE OR SEARCH THIS CLASS, SUBCLASS:
232+, particularly subclasses 237+ for a separator with repair or assembly means for removal of a filter from its casing.
328, for filters comprising pivotally mounted sections.
341, for parallel units individually controlled, so that a selected unit can be removed.
