Pipe joints or couplings – Nonmetal to metal – Internal member
Reexamination Certificate
2010-02-15
2011-12-27
Dunwoody, Aaron (Department: 3679)
Pipe joints or couplings
Nonmetal to metal
Internal member
C285S096000, C285S247000, C285S272000, C285S332200
Reexamination Certificate
active
08083266
ABSTRACT:
A gas riser apparatus, and methods for making and using a gas riser apparatus, utilize a swivel-nut having an annular collar section thereof which includes a radially outwardly opening annular groove therein adapted for swaged/crimped attachment to the remainder of the riser, at an above-ground end of the riser. For risers including a rigid metallic pipe section, the above-ground end of the pipe may be configured for swaged/crimped attachment to the annular collar of the swivel-nut through application of radially inwardly directed pressure on the above-ground end of the rigid riser pipe. For risers not having a rigid metallic section, a swage/crimp collar may be utilized for forming a connection between a flexible metal conduit and the swivel-nut, through application of radially inwardly directed pressure applied to the swage/crimp collar while the collar is disposed about the above-ground end of the flexible metal conduit.
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Belousek Kevin J.
Tarquini Joseph A.
Chicago Fittings Corporation
Dunwoody Aaron
Kee Fannie
Reinhart Boerner Van Deuren P.C.
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