Dispensing – With lock or fastening seal – Inhibiting actuation of discharge assistant
Patent
1998-01-12
1999-12-28
Derakshani, Philippe
Dispensing
With lock or fastening seal
Inhibiting actuation of discharge assistant
2223219, B67D 533
Patent
active
06006949&
ABSTRACT:
A manually operated reciprocating liquid pump of the type comprising a plunger that reciprocates vertically in a pump chamber to dispense liquid from a container to which the pump is attached includes a vent opening to vent air to the interior of the container as liquid is drawn from the container by the pump. The pump plunger locks in its vertically downward position in the pump chamber and is provided with a stopper that plugs the vent opening and prevents liquid in the container from passing through the vent opening when the plunger is in its locked position.
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Foster Donald D.
Hinson John Patrick
Continental Sprayers International, Inc.
Derakshani Philippe
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