Media dispenser with isolated pump restoring system

Details Media dispenser with isolated pump restoring system Media dispenser with isolated pump restoring system

1993-08-16

1995-08-01

Mitchell, David M.

Dispensing

With discharge assistant

With movable nozzle interconnected therewith

B67D 542

Patent

active

054373980

ABSTRACT:
In a discharge apparatus (1) the restoring spring (21) of a restoring system (20) for a discharge pump (7) and for valves (26,30) is positioned, separated from the medium, in a tightly closed spring chamber (22). The medium inlet (31) into the discharge pump (7) is positioned eccentrically thereto and issues into an external, annular presuction chamber (15) from which the medium passes via an intermediate valve (30) into the pump chamber (39). This avoids contact between the medium and metallic parts and this gives both favorable flow paths for the medium and a compact pump construction.

REFERENCES:
patent: 3146920 (1964-09-01), Benjamin
patent: 3908870 (1975-09-01), Nozowa et al.
patent: 4050613 (1977-09-01), Corsette
patent: 4154374 (1979-05-01), Kirk, Jr.
patent: 4183449 (1980-01-01), Blake
patent: 4305530 (1981-12-01), Nozawa
patent: 4494680 (1985-01-01), Corsette
patent: 4530449 (1985-07-01), Nozawa et al.
patent: 4896773 (1990-01-01), Corsette

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