Expansion ring assembly

Details Expansion ring assembly Expansion ring assembly

F - Mech Eng,Light,Heat,Weapons

16

J

F16J 15/06 (2006.01) B25J 13/08 (2006.01) E02D 29/12 (2006.01) E03F 5/02 (2006.01) F16L 5/00 (2006.01) F16L 55/163 (2006.01)

Patent

CA 2446306

An expansion ring assembly for sealing a gasket with respect to an annular wall of a rigid structure. The expansion ring assembly includes a drive mechanism for engaging and driving apart the opposing ends of an expansion ring to thereby radially expand the ring. The drive mechanism generally includes a pair of block members having threaded bores therethrough, and a bolt having oppositely-threaded ends which are threaded within respective threaded bores of the block members. The bolt additionally includes tool-receiving structure, such as a nut portion, which may be engaged by a suitable tool to rotate the bolt. The block members are respectively engaged with opposite ends of the expansion ring. Rotation of the bolt in a first direction simultaneously drives the block members apart from one another along the bolt to radially expand the expansion ring, and rotation of the bolt in a an opposite, second direction simultaneously drives the block members toward one another along the bolt to allow the expansion ring to radially contract.

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