Fluid handling – Line condition change responsive valves – Fluid opened valve requiring reset
Reexamination Certificate
2011-05-10
2011-05-10
Hepperle, Stephen M (Department: 3753)
Fluid handling
Line condition change responsive valves
Fluid opened valve requiring reset
C137S514500, C137S557000, C073S001720, C251S054000
Reexamination Certificate
active
07938139
ABSTRACT:
A reset relief valve with a body having an inlet port, an outlet port, and an interior wall partially defining an enclosed chamber, a piston disposed in the body and moveable between a first position at which the piston is disposed in fluid flow-blocking relationship between the inlet port and the outlet port of the body and a second position at which the piston is removed from that position, a piston having a head with opposed end surfaces one of which defines a portion of the enclosed chamber and at least one fluid flow passageway extending through the head and providing fluid communication between the enclosed chamber in the body, and a second chamber above a moveable disc in the piston and a pressure sensor in fluid communication with the fluid in the chambers. A preferred embodiment includes data acquisition software for monitoring data and storing pressure and other data to control the operation of the valve.
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Brown Macade
Hepperle Stephen M
RR Value, Inc.
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