Bottle coffee machine, manually operated with reduced effort, especially suitable for domestic uses (Machine-translation by Google Translate, not legally binding)

摘要

Hand-operated piston coffee machine with reduced effort, especially suitable for domestic use, comprising at least one hand-lift piston and displaceable inside the corresponding cylinder, the upper chamber of which located above said piston is in communication with the inlet of pressurized hot water characterized in that the stem-plunger assembly comprises two elements assembled with axial play which have two surfaces normal to the axis facing and intended to partially fit with each other with a hermetic seal having a spring acting on the sense of approaching said surfaces.- (Machine-translation by Google Translate, not legally binding)