Patent ID: 6152334
Filing Date: 2000-11-28
Classification: B05C,B67D

Abstract:
A piston for compressing and emptying a bag-like envelope containing a pasty liquid, in a rigid outer housing with a discharge opening,wherein the piston is axially movable along an axis and comprises on its outer edge at least one scraping element separate from the piston having a scraping edge,said scraping element being movably connected to said outer edge and being movable between a first insertion position and a second scraping position,wherein in said insertion position, said scraping edge of said scraping element is arranged at a distance from the axis of the piston which is smaller than the distance of said scraping edge from the axis of the piston in the scraping position,and wherein in said scraping position, said scraping edge is engageable with an inner surface of the housing.