Metal deforming – Process – Tube making or reshaping
Reexamination Certificate
2011-08-02
2011-08-02
Tolan, Edward (Department: 3725)
Metal deforming
Process
Tube making or reshaping
C072S370060, C072S370210
Reexamination Certificate
active
07987690
ABSTRACT:
Fluid conduits for plumbing and other uses having integral end fittings are disclosed herein. A method of forming a fluid conduit in accordance with an embodiment of the disclosure includes providing a copper tube having a first inner diameter and a first wall thickness, and heat treating an end portion of the copper tube to a predetermined hardness. The method can further include increasing the wall thickness of the end portion from the first wall thickness to a second wall thickness, and increasing the inner diameter of the end portion from the first inner diameter to a second inner diameter. The method further includes forming a circular groove in an interior surface of the end portion and positioning a seal in the circular groove.
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Blair, Sr. Steven L.
Duggan Michael
Nixon Forrest
Cerro Flow Products LLC
Perkins Coie LLP
Tolan Edward
LandOfFree
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