Fluid control valve
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United States of America Patent
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Issued Date -
Nov 27, 2008
app pub date -
Apr 29, 2008
filing date -
May 21, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A fluid control valve comprises a diaphragm formed of a plurality of circular thin metal plates laminated one on another, the diaphragm being placed to be movable into or out of contact with a valve seat for closing and opening the valve. Each thin metal plate has a warp in a predetermined direction due to rolling anisotropy, and the thin metal plates are laminated with the directions of respective warps coinciding with one another in such a manner that variations in lift amount of the diaphragm are decreased.
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