Ferrule with plural inner diameters

Details Ferrule with plural inner diameters Ferrule with plural inner diameters

2007-07-09

2009-11-10

Bochna, David E (Department: 3679)

Pipe joints or couplings

Packed

Wedge

C285S343000, C285S382700, C285S249000

Reexamination Certificate

active

07614668

ABSTRACT:
A ferrule for a metal tube fitting includes a body that is case hardened over substantially its entire surface. The ferrule also has an interior wall comprising first and second cylindrical portions, the first cylindrical portion being axially adjacent a front edge of the ferrule and having the smallest interior wall diameter of the ferrule, the second cylindrical portion having a larger diameter than said first cylindrical portion.

REFERENCES:
patent: 4304422 (1981-12-01), Schwarz
patent: 7240929 (2007-07-01), Williams et al.

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