Butterfly valve
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Mar 28, 2000
Issued Date -
N/A
app pub date -
Sep 25, 1997
filing date -
Sep 25, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A butterfly valve is disclosed, wherein a pair of rotating shafts for rotating a disk. One of the shafts is used to rotate the disk by 90 degree, the other is used to linearly displace the disk, thereby tightly depressing the disk on the valve seat to completely prevent the leak.
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