Liquid supply apparatus
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United States of America Patent
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Jan 13, 2009
Grant Date -
Sep 22, 2005
app pub date -
Feb 6, 2003
filing date -
Feb 8, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A liquid supply apparatus is provided. The liquid supply apparatus has a cylinder, a piston and a gas supply apparatus. The cylinder is provided with a head portion with outlet. The cylinder has a rear end opened. The piston is inserted into the cylinder. The piston moves along the longitudinal direction of the cylinder so as to supply liquid contained in the cylinder. The gas supply apparatus generates and supplies gas to push the piston. The piston has a pair of sealing ring. The sealing ring has a base attached to a body of the piston and a outer wing connected to the base. The gas supply apparatus has a gas pressure regulator.
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