Abstract: An auxiliary device for sealing cans for beverages, of the type having a disposable opener mechanism, is shaped as a tubular element (9) which tapers off from a comparatively wide collar (7) to a narrower spout portion (8) and which, adjacent the collar, comprises means for snapping the collar on to the can. A locking ring (18) is arranged to cooperate with the collar (7) of the auxiliary device and serves, after snapping the collar on to the can, to clamp the collar to the can. The locking ring is connected to the auxiliary device via a connection which is formed by a tongue (13) on the auxiliary device and a slot in the locking ring, thereby permitting the locking ring to accompany the auxiliary device.

Abstract: A removable filter container for use with a liquid system, and a method of removing the filter. A first container which houses the filter is removably attached to a main compartment of the liquid system. A second container which is normally empty is attached thereto. A manually operated punching tool connected to the second container punches a hole in the first container to cause liquid to flow from the first container through the punched hole and into the second container, lowering the level of liquid in the first container to prevent overflow of the liquid therein when removing the first container from the liquid system.