F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 27/08 (2006.01) F16L 27/12 (2006.01) F16L 51/02 (2006.01)
Patent
CA 2114304
Abstract An expansion joint for coupling two conduits in a manner allowing relative axial movement therebetween and including an external shell or housing receiving the ends of both conduits and receiving an end of at least one of the conduits in a manner allowing relative axial movement of the end of the conduit in the shell, a flexible metal bellows in the shell connected to the shell and to the end of the one conduit for allowing relative axial movement between the ends of the conduits and for providing a fluid seal between the interiors of the conduits and the end of the expansion joint which receives the one conduit, and charac- terized by a safety flow restrictor operatively associated with the shell and with the one conduit for restricting fluid flow out the end of the expansion joint which receives the one conduit in the event the bellows fails to maintain the afore-mentioned fluid seal. The safety flow restrictor comprises a member surrounding the other conduit in close-fitting axially movable relation and a retainer defining an axial region holding the member against axial movement relative to the shell and allowing limited move- ment of the member in directions substantially perpendicular to the longitudinal axes of the other conduit and the shell. The safety flow restrictor can be incorporated in a single expansion joint wherein one conduit is fixed to the external shell or hous- ing and the other conduit is movable therein and it can be incor- porated in a double exapnsion joint including two conduits having ends thereof axially movable within a common external shell or housing.
Adsco Manufacturing Corp.
Macrae & Co.
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