Metering and spray pump for liquid and low-viscosity substances

Details Metering and spray pump for liquid and low-viscosity substances Metering and spray pump for liquid and low-viscosity substances

1988-08-05

1991-05-14

Olszewski, Robert P.

Dispensing

Resilient wall

Supply container delivering to receiving chamber

222211, 222214, 222321, 222383, B67D 508

Patent

active

050148818

ABSTRACT:
In order to create a metering and spray pump of high functional reliability, consisting of as few individual parts as possible and able to be produced with as low production costs, in particular assembly costs, as possible, in which the pumping member consists of an elastically-flexible bellows (4), which is arranged connectively between mutually movable, dimensionally stable housing parts (1,2), the bellows (4) has at its one end, as axial extension, a radially flexible, sleeve-like annular wall section (30), which encloses in sealing manner like a valve the circumferential surface (31) of a socket (24), in the form of a ring or pot, integrally molded onto the housing part (1) executing the pumping strokes. The other end of the bellows (4) is provided with an end wall section (17) which has at least one passage opening (18) and covers like a valve one or more outlet openings (16) of a housing end wall (12) of the second housing part (2) or forms the valve seat for a valve closing member which is molded onto a displacement body arranged in the bellows.

REFERENCES:
patent: 3124275 (1964-03-01), Lake
patent: 4347953 (1982-09-01), Bauer
patent: 4589573 (1986-05-01), Tada
patent: 4732549 (1988-03-01), von Schuckmann
patent: 4846372 (1989-07-01), von Schuckmann
patent: 4863070 (1989-09-01), Andris

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