Unit dose assembly
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United States of America Patent
Stats
-
Oct 1, 1991
Grant Date -
N/A
app pub date -
Feb 8, 1990
filing date -
Feb 8, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A cap and tube assembly device, including a tube for containing a product, a nozzle having one end mounted to one end of the tube and having a thin wall section puncturable to provide a discharge on the other end and a cap. The nozzle has a smaller axial cross section than the tube. The junction of the tube and the nozzle define an inclined surface of transition to permit flow without cavitation from the tube to the nozzle. The cap has an inside cross section sized to engage the nozzle and an outside cross section less than the inside cross section of the tube. The cap has an axially centered piercing point positioned in a first position spaced from the thin wall and movable to a second position to puncture the thin wall. The piercing point includes a chisel shaped edge for forming a hole in the thin wall without fragmenting the wall. Also provided are ribs positioned in the tube for preventing entry of the cap into the nozzle when a plurality of these assemblies are stacked one on another.
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