Pressure-regulating device, transportation vehicle, and pressure difference-controlling unit
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United States of America Patent
Stats
-
Nov 18, 2008
Grant Date -
May 25, 2006
app pub date -
Dec 1, 2003
filing date -
Nov 29, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A pressure controlling apparatus controls a pressure in a container capable of storing a molten metal and supplying the molten metal to an outside using a pressure difference and includes: a supplying portion for supplying a compressed gas to be supplied to the container; a flow passage for supplying the compressed gas from the supplying portion to the container; a first switching valve, being inserted into the passage, capable of manually switching a first mode that enables the passage of the gas between the supplying portion side and the container side and a second mode that enables the passage of the gas between the container side and the outside; an exhausting portion for exhausting a gas from the container; and a second switching valve for switching a pressure applying mode for applying a pressure to the container and an exhausting mode for exhausting the gas from the container.
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