Stopper system for vessel orifice
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United States of America Patent
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-
Nov 30, 1999
Issued Date -
N/A
app pub date -
Jun 24, 1997
filing date -
May 20, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The combination of a vessel and a stopper assembly. The vessel has a wall defining a storage space for a supply of a flowable material and an orifice on the wall communicating through the body from the storage space to externally of the storage space. The stopper assembly selectively blocks the orifice. The stopper assembly has a frame, a stopper element with a blocking surface on the frame that is movable relative to the vessel between i) a closed position wherein the blocking surface substantially blocks the orifice and ii) an open position, and a repositioning mechanism for moving the stopper element relative to the vessel with the stopper element remaining in the closed position to thereby avoid fixing of the stopper element to the vessel.
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