Fluid coolant union

Details Fluid coolant union Fluid coolant union

2007-05-25

2009-10-06

Hewitt, James M (Department: 3679)

Pipe joints or couplings

With fluid pressure seal

Swivel with flange in socket

C285S111000, C285S113000, C277S530000, C277S531000

Reexamination Certificate

active

07597360

ABSTRACT:
A coolant union includes a seal assembly having a first seal member and a non-rotating second seal member. At least one of the annular sealing surfaces presented by the rotating seal member and the non-rotating seal member is chamfered such that the chamfered sealing surface presents a sealing surface width less than the width of the dimension of the other sealing surface. The fluid coolant union further includes a U-shaped annular secondary seal member having a chamfered portion structurally arranged to receive a triangular back-up ring which stores sufficient relative displacement of the floating seal assembly to create a separation between the first rotating seal and the second non-rotating seal members during the unpressurized condition.

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