Apparatus for controllably discharging flowable media

Discharge apparatus for flowable media, comprising:

• a basic body at least partly receiving a pump chamber connectable to a discharge opening via a discharge channel, the pump chamber being bounded by a pump cylinder and a pump piston plug;
• said pump cylinder forming a medium reservoir;
• said pump piston plug being displaceably guided in said pump cylinder for discharging all said medium contained in said medium reservoir in a single pump stroke in a pump stroke direction;
• a ram arranged to pierce said pump piston plug under action of a predetermined axial actuating force applied to said piston plug in said pump stroke direction;
• and,
• said piston plug having a piercing resistance to the action of said actuating force,
• whereby said apparatus requires a predetermined actuating force level, and in response to said predetermined force level, discharges the medium with a predetermined discharge pressure and whereby said apparatus is provided with a destroyable, tamper-evident closure.

Discharge apparatus for flowable media, comprising:

• a basic body at least partly receiving a pump unit;
• said pump unit having a pump chamber connectable to a discharge opening via a discharge channel;
• a pump cylinder and a pump piston bounding said pump chamber;
• said pump cylinder forming a medium reservoir;
• said pump piston being displaceably guided in said pump cylinder for discharging all said medium contained in said medium reservoir in two partial pump strokes;
• a first and a second bridge element each having at least one breakable material bridge between said pump unit and said basic body which can be destroyed by an actuating force exerted in a pump stroke direction;
• thereby providing both a predetermined actuating force level for discharging said medium with a predetermined discharging pressure during each of said partial pump strokes and destroyable tamper-evident closures for each of the partial pump strokes;
• said first and second bridge elements being spaced such that said first bridge element allows, after breakage of its material bridges, said first partial stroke of said pump piston, said first partial stroke being limited by said second bridge element;
• and,
• said pump piston being free for said second partial stroke after breakage of said material bridges of said second bridge element under a new predetermined actuating force, the pump piston is free for a second partial stroke.

Discharge apparatus for flowable media, comprising:

• a basic body at least partly receiving a pump unit;
• said pump unit having a pump chamber connectable to a discharge opening via a discharge channel;
• a pump cylinder and a pump piston bounding said pump chamber;
• said pump cylinder forming a medium reservoir and being at least partly contained in a plastic actuating sleeve;
• said pump piston being displaceably guided in said pump cylinder for discharging all said medium contained in said medium reservoir in at least one pump stroke;
• said basic body having a central, substantially cylindrical portion having at its upper ends a spray nozzle and at its lower end actuating and gripping shoulders including a generally flat radial projection of considerably greater dimensions in two directions opposite to each other than in a direction perpendicular thereto;
• at least one breakable material bridge integral with a fastening element and said actuating sleeve said material bridge being destroyable by an actuating force exerted in a pump stroke direction;
• thereby providing both a predetermined actuating force level for discharging said medium with a predetermined discharging pressure and a destroyable tamper-evident closure;
• said fastening element being a ring surrounding an outside housing projection;
• said housing projection projecting from the underside of said gripping shoulders;
• and,
• said actuating sleeve projecting centrally through and far beyond said fastening element.