Pipe joints or couplings – Packed – Socket
Reexamination Certificate
2011-07-12
2011-07-12
Bochna, David E (Department: 3679)
Pipe joints or couplings
Packed
Socket
C277S618000
Reexamination Certificate
active
07976075
ABSTRACT:
A crown-type probe seal for a female hydraulic coupling member has one or more circumferential, spring-energized seals. One particular preferred seal comprises a closely-wound helical spring which imparts an inwardly-directed radial force to the crown seal. In certain embodiments, the helical spring is substantially encased in a polymer jacket. In yet other embodiments, a liner is interposed between the outer surface of the helical spring and the polymer jacket. An optional, axial extension on at least one end of the crown seal provides a bore liner for a female hydraulic coupling member in which the crown seal is installed.
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Hollister F. Harold
Smith, III Robert E
Bochna David E
National Coupling Company Inc.
Wong, Cabello, Lutsch, Rutherford & Brucculeri L.L.P.
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