Reservoir e.g. lubricant reservoir, for internal combustion engine, has metallic sealing joint positioned between stopper and bottom of reservoir, and spring forming unit moving screw from bottom of reservoir during unscrewing of stopper

摘要

The reservoir (3) has a drain hole in a lower part, and a nut (4) positioned inside the reservoir. A stopper (1) with thread is screwed in the nut. A metallic sealing joint (2) is positioned between the stopper and bottom of the reservoir. A spring (5) e.g. helical spring, forming unit moves the nut from the bottom of the reservoir during unscrewing of the stopper. A guiding unit (6) formed by a U-shaped sheet guides the nut, and is arranged on the bottom of the reservoir around the nut. A stop (7) limits the space of the nut from the bottom of the reservoir.