Valves and valve actuation – Rotary valves – Seat or interface seal
Reexamination Certificate
2011-06-21
2011-06-21
Fristoe, Jr., John K (Department: 3753)
Valves and valve actuation
Rotary valves
Seat or interface seal
C251S305000
Reexamination Certificate
active
07963503
ABSTRACT:
A rotary valve includes a valve body with an inlet, an outlet, a flow passage extending between the inlet and the outlet, and a rotating control element disposed within the valve body for selectively opening and closing the flow passage. The valve also includes a retainer ring mountable to the valve body which holds in place a seal carrier ring having an annular mounting flange mounted between the valve body and the retainer ring. The seal carrier ring also includes a seal carrier cartridge and a flexible portion coupling the seal carrier cartridge to the mounting flange to provide an improved seal and greater ease of assembly.
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Fisher Controls International LLC
Fristoe, Jr. John K
Marshall & Gerstein & Borun LLP
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