Fluid handling – Line condition change responsive valves – Pilot or servo controlled
Reexamination Certificate
2005-10-18
2005-10-18
Krishnamurthy, Ramesh (Department: 3753)
Fluid handling
Line condition change responsive valves
Pilot or servo controlled
C137S613000, C073S040000, C374S143000, C434S053000, C702S140000
Reexamination Certificate
active
06955184
ABSTRACT:
A pneumatic function generator system for maintaining a desired pressure and/or a desired rate of pressure change with respect to time. The pneumatic function generator system may include a servo valve for controlling the amount of fluid traveling therethrough, a primary sensor for measuring the pressure of the fluid and for generating an analog signal corresponding to the pressure of the fluid, an analog-to-digital module for converting the analog signal to a digital value, and a digital device for receiving the digital value and, depending on the digital value, generating a control signal that is used to control the opening and closing of the servo valve.
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Friedrichs Hans Peter
Hubbard Rondo K.
Ingrassia Fisher & Lorenz
Krishnamurthy Ramesh
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