Pipe joints or couplings – With fluid pressure seal – Independent supply passage
Reexamination Certificate
2005-07-21
2010-06-08
Dunwoody, Aaron M (Department: 3679)
Pipe joints or couplings
With fluid pressure seal
Independent supply passage
C285S323000
Reexamination Certificate
active
07731240
ABSTRACT:
A pipe coupling for joining together the ends of two adjacent pipes includes a housing for receiving the ends of the two adjacent pipes, and a locking arrangement which includes an annular chamber, and a plurality of grippers radially moveable towards the central axis of the housing from an inoperative condition to an operative condition. Each gripper includes a gripping formation for operatively gripping a pipe inserted into a bore of the housing, and a locking formation for operatively engaging a corresponding locking formation on the housing so as to axially lock the gripper to the housing. Each locking arrangement also includes a locking ring for locking the grippers to the housing so that axial displacement of the locking ring under fluid pressure within the annular chamber causes radial displacement of the grippers into the operative condition.
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Amidex Coupling Systems (Pty) Ltd
Buchanan & Ingersoll & Rooney PC
Dunwoody Aaron M
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