Butterfly valve
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 9, 1982
Grant Date -
N/A
app pub date -
Oct 8, 1980
filing date -
Oct 9, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A butterfly valve includes a gasket on the pivotable member which has a peripheral ring portion and two end rings which are concentric to the shaft supporting the pivotable member, each end ring having a flange held under spring pressure between the pivotable member and bushings on the shaft ends. The gasket thus seals the valve against leakage to the outside and to the shaft.
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