Dispenser
AssigneeWischerath and Schreiner KG
InventorJosef Eckert
Life of this patent
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Abstract
A dispenser for pasty substances and/or liquids has two coaxially arranged metering pistons 11,24 which supply charges of material from two coaxially arranged pump chambers 14,23 through ejection channels 19,26 into an ejection chamber 20. The material can emerge from ejection chamber 20 through an outlet 4. This outlet 4 is controlled by means of plug 21 biassed in closing direction. When the metering pistons 11,24 are on their suction strokes material passes from the supply tanks 17,27 which are likewise arranged coaxially one inside the other. Such a configuration yields a dispenser which consists in essence of two separate dispensers, one inside the other. The two streams of material combine directly ahead of the outlet 4.
Claims10
A dispenser for pasty substances and/or liquids having a supply tank with an axially displaceable follower piston and an ejection device with an operating plunger, comprising a reciprocable metering piston in a pump chamber, the pump chamber being connected on one side to the supply tank and on the other to an outlet for the dispenser, a plug in said outlet biassed in the direction of closure, and further characterized in that a second pump chamber 23 of smaller diameter than the first pump chamber 14, and having a second metering piston 24 is mounted coaxially of the first pump chamber, the second metering piston being connected to the plunger 3 and the second pump chamber 23 being connected to a second supply tank 27 within the first supply tank 17, and ejection channel means for material from said second pump chamber.
Dependencies are inferred from the claim text.