Container closure provided with air pump mechanism
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United States of America Patent
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Jul 18, 1989
Grant Date -
N/A
app pub date -
Jan 22, 1988
filing date -
Jan 31, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A closure to be applied to a container for holding a liquid such as shampoo. The closure comprises a closure body, a discharge liquid tube extending through the closure body and a reciprocating air pump mechanism built in the closure body. The air pump mechanism includes a cylinder whose discharge side communicates with the inside of the container and whose intake side communicates externally of the container, a piston, and a spring for elastically biasing the piston toward the intake side. The piston has a rod whose free end portion extends outwardly of the closure body.
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