Heater built-in valve
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United States of America Patent
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-
May 21, 2013
Grant Date -
Aug 5, 2010
app pub date -
Apr 1, 2008
filing date -
Apr 2, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A heater built-in valve usable even under a high-temperature condition beyond 200° C. is provided.
- Piston driving means 7 has an upper compressed-air introducing chamber 24 for moving a piston 6 downward, and a lower compressed-air introducing chamber 25 for moving the piston 6 upward. Piston sealing means 8 has an upper bellows 29 that seals the upper compressed-air introducing chamber 24, and a lower bellows 30 that seals the lower compressed air introducing chamber 25.
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