Control of fluid conditions in bulk fluid distribution systems

Fluid handling – Self-proportioning or correlating systems – Self-controlled branched flow systems

Reexamination Certificate

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C137S087020, C137S209000

Reexamination Certificate

active

07810516

ABSTRACT:
An improved bulk fluid distribution for supplying process fluids to semiconductor process tools. The improved system having an alternating pressure vessel engine substantially eliminates pressure fluctuations in the bulk fluid supply line due to head losses from the changing weight of the fluid in the dispensing vessels. The system also enables flexible control of the flow conditions of the fluid in the fluid supply line.

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