Dispensing pump for media of low viscosity, especially paste-lik

Details Dispensing pump for media of low viscosity, especially paste-lik Dispensing pump for media of low viscosity, especially paste-lik

1993-04-13

1994-10-04

Kashnikow, Andres

Dispensing

Plural sources, compartment, containers and/or spaced jacket

With common discharge

222209, 222327, B67D 560

Patent

active

053518624

ABSTRACT:
A dispensing pump (1) made of plastic for dispensing metered amounts of paste-like media includes a bottle-, can- or tube-like container (60), with an elastic bellows (4) acting as a pumping member, which is connectingly arranged between an upper housing part (2) and a telescopingly movable, lower housing part (3), which is coaxial thereto, and whose interior (32) forms a pump chamber. Its upper end section (38) is connected to an annular wall (35) of the upper housing part (2). Its lower end section (45) is in sealing contact with an annular shoulder (46) of a radial partition (19) of the lower housing part (3). A second pump chamber (33, 33/1 ) for a second medium, which communicates with the discharge opening (10) of the upper housing part through a second discharge valve and/or at least one flow opening (34) in the partition (13), is formed by two annular wall sockets (30, 31 ), which are telescopingly guided one inside the other, concentrically surround the bellows (4) at a radially spaced location, and are made in one piece with one of the two housing parts (2, 3) each. On the suction side, the second pump chamber is connected to an annular chamber (81) of a container (61) or to a second container via at least one eccentric suction channel (82) in the radial wall (19).

REFERENCES:
patent: 4438871 (1984-03-01), Eckert
patent: 4846372 (1989-07-01), von Schuckmann
patent: 4979646 (1990-12-01), Andris
patent: 5042694 (1991-08-01), Birmelin
patent: 5224627 (1993-07-01), Weag
patent: 5238156 (1993-08-01), Andris

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