Collet for pipe coupling

Details Collet for pipe coupling Collet for pipe coupling

2004-09-27

2008-11-25

Hewitt, James M (Department: 3679)

Pipe joints or couplings

Movable jaw

Wedge bushing

C285S247000, C285S322000, C285S339000, C285S354000, C285S389000

Reexamination Certificate

active

07455328

ABSTRACT:
An annular collet or gripping member radially located within a coupling assembly of the type having a hollow body, nut and an O-ring or seal for connection of a pipe thereto. The collet is axially split, the split defined by first and second generally parallel ends that are of an engageable configuration, typically by one end having a projection and the other end a correspondingly shaped cavity enabling the ends to interlock. In the normal operation of the coupling, the collet exerts a longitudinal force on the O-ring causing a seal. When it experiences an axial force that would normally relatively displace the two ends causing a leak, being engaged to each other this movement is resisted ensuring that the seal is maintained. The present invention also relates to a coupling having such a collet.

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