Process liquid feed mechanism
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United States of America Patent
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Aug 20, 2013
Grant Date -
Nov 3, 2011
app pub date -
Apr 26, 2011
filing date -
Apr 28, 2010
priority date (Note) -
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Abstract
A process liquid feed mechanism includes a fixed cylinder with a thread around a peripheral surface, a movable cylinder provided coaxially with the fixed cylinder, a process liquid feed tube and an operating rotator. The movable cylinder is screw-engaged to the fixed cylinder. The process liquid feed tube is fixed in an axial position relative to the movable cylinder and passes through the lid and a cylinder including the fixed cylinder and the movable cylinder to be axially movable relative to the cylinder. The operating rotator includes an annular portion provided coaxially with the movable cylinder. An engaging portion and an engaged portion, which are provided in the movable cylinder and the annular portion respectively, rotate the movable cylinder through engagement therebetween with rotation of the operating rotator and release the engagement as a torque on the movable cylinder increases.
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