Method for fitting a dust collection bag to the suction inlet of a vacuum cleaner has a tubular, conical and serrated collar which pierces the bag wall and seals the connection

摘要

The bag fitting collar (1) has a slightly conical end part (2) with teeth (4) at the outer end which break through a filter bag wall as it is inserted into the inlet tube of the cleaner. The grip (3) allows a firm fitting.