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Class 217/100 - Automatic


Subclass of Class 217 - Wooden receptacles
Definition: Valved bungs in which the valves operate automatically.
No. of patents: 2
Last issue date: 11/12/2002


NumberTitleIssue Date
6478178Fermentation lock for wine barrel
An improved stopper apparatus for use with wine barrel bung holes includes a generally frusto-conical stopper member having a central aperture, a top surface, a bottom surface, and an outer circumferential surface adapted to seal against the inner circumf...
11/12/2002
5702018Positive seal fermentation lock for wine barrels
A stopper apparatus for use with wine barrel bung holes includes a generally frusto-conical stopper member having a central aperture, a top surface, a bottom surface, and an outer circumferential surface adapted to seal against the inner circumferential s...
12/30/1997
 
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