Packing manifold for slip-type expansion joints

Details Packing manifold for slip-type expansion joints Packing manifold for slip-type expansion joints

1993-06-14

1995-06-06

Nicholson, Eric K.

Pipe joints or couplings

Variable length

285 11, 285 96, 285302, F16L 2712

Patent

active

054216214

ABSTRACT:
A slip-type expansion joint including a body portion for connection to a pipe or conduit and having an inner annular recess for receiving packing rings and injectable packing material and the joint further including a slip portion for connection to another pipe or conduit and guidedly received in the body portion for limited axial movement therein to accommodate limited axial movement of the pipes or conduits, the packing rings providing the main sealing function of the joint and the packing material exerting force on the packing rings to maintain the sealing function thereof, the expansion joint characterized by a plurality of ports around the body in communication with the annular recess for introducing the packing material to the recess and a manifold arrangement extending around the body and connected to the ports for supplying packing material to all of the ports from one location on the manifold arrangement so that packing material can be supplied readily to all of the ports even if some locations around the periphery of the expansion joint are not manually accessible.

REFERENCES:
patent: 1994169 (1935-03-01), Comins
patent: 2308757 (1943-01-01), Hulsberg
patent: 3429588 (1969-02-01), Nelson
patent: 3984131 (1976-10-01), Gingrich
patent: 4124230 (1978-11-01), Ahlstone
patent: 4146253 (1979-03-01), Celommi
patent: 4225143 (1980-09-01), Hannah
patent: 4526409 (1985-07-01), Schaffer
patent: 4856827 (1989-08-01), Delamane
patent: 5011195 (1991-04-01), Nightingale

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