Safety closure member

Details Safety closure member Safety closure member

F - Mech Eng,Light,Heat,Weapons

16

L

137/139

F16L 55/10 (2006.01) F16J 13/10 (2006.01) F16L 55/136 (2006.01)

Patent

CA 1283022

"SAFETY CLOSURE MEMBER" Abstract of the Disclosure A safety closure for use in a flange in which the flange has an internal circumferential groove in the passageway therethrough, the closure being formed of a cylindrical body slidably receivable within the flange passageway, the body having a reduced diameter opening therethrough, a plurality of leaves slideably supported to the body, the outer ends of the leaf being receivable in the flange groove, an elastomeric gasket to seal the periphery of the body to the flange passageway, and a pressure relief member slidably received in the body passageway, the upper end of the pressure relief. member being of enlarged diameter and received between opposed inner ends of the leaves when the leaves are outwardly positioned within the flange groove to thereby prevent the leaves from being removed from the groove, the pressure relief member being downwardly displaceable to an open position permitting fluid flow through the cylindrical body prior to permitting the leaf to be retracted thereby assuring release of pressure before the leaves can be moved to the position permitting the closure member to be removed from the interior of the flange.

550771

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