Liquid purification or separation – With means to add treating material – Chromatography
Reexamination Certificate
2008-01-08
2008-01-08
Therkorn, Ernest G. (Department: 1797)
Liquid purification or separation
With means to add treating material
Chromatography
C210S656000, C285S343000
Reexamination Certificate
active
11333944
ABSTRACT:
The invention pertains to a nut and ferrule assembly for use in joining tubing to a fitting. The ferrule has a male member which interlocks with a nut and freely rotates within the nut. The interlock reduces the number of parts necessary to be handled, eliminates the need for the nut to be of the same material as the ferrule, reduces the possibility of flow restriction or tubing deformation associated with rotation of the ferrule, and aids in the removal of the ferrule from the detail when removal is desired.
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Crain Caton & James P.C.
Hudson III James E.
Therkorn Ernest G.
Valco Instruments Co., Inc.
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