Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Reexamination Certificate
2006-04-04
2006-04-04
Patel, Vishal (Department: 3673)
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
C277S438000, C277S530000, C277S537000, C277S539000, C277S567000, C277S626000, C277S647000, C277S650000, C156S196000
Reexamination Certificate
active
07021632
ABSTRACT:
A secondary seal gasket is formed of a graphite material for higher temperature applications. The gasket is formed by multiple wraps of a graphite ribbon and then is shaped in a mold to provide a U-shaped cross-sectional configuration having a self-energizing spring disposed therein. The gasket is formed from an L-shaped ribbon wrap having additional ribbon overwraps thereon to define a gasket ring which is then molded in a die press to form the U-shape. The L-shaped ribbon wrap thereby extends axially and then radially outwardly to define an end wall of the gasket to impede migration of fluid between the axial ribbon wraps.
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Flowserve Management Company
Flynn ,Thiel, Boutell & Tanis, P.C.
Patel Vishal
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