Fluid handling – Line condition change responsive valves – Direct response valves
Reexamination Certificate
2005-10-11
2005-10-11
Rivell, John (Department: 3753)
Fluid handling
Line condition change responsive valves
Direct response valves
C137S251100, C137S337000, C137S357000, C137S368000
Reexamination Certificate
active
06953053
ABSTRACT:
A relief valve assembly including a valve member, having inlet and outlet bores, for sliding movement within a valve body bore portion, having a cylindrical sleeve portion, journalled via a cylindrical sleeve bearing for substantially the entire axial extent thereof, with a valve member head portion having a plurality of equally spaced apertures, connecting the inlet bore and a sleeve portion central cavity with the outlet bore. An annular resilient seal, having a flat-faced sealing surface is retained in the valve member head portion for sealingly engaging a valve body valve seat portion. A compression member, for biasing the valve member to a closed position, is operatively interposed between an adjustment member piston portion and a valve member sleeve cavity, the adjustment member having an adjustment stem for external adjustment of the compression member. A radial end thrust bearing, is interposed between the compression member and the adjustment member.
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LaCrosse Timothy Scott
Waffler Burdell Eugene
Parker-Hannifin Corporation
Pophal Joseph J.
Rivell John
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