Patent ID: 6886709
Filing Date: 2005-05-03
Classification: F16J

Abstract:
1. Closure apparatus, comprising: a collar having a collar periphery and having a collar inner surface defining an opening, a closure, having a closure periphery, said closure being for closing said opening, a bearing structure being located around said collar periphery or said closure periphery, a locking ring being mounted for rotation with respect to said closure and said opening on said bearing structure, so that said locking ring is rotatable between a locking position for locking said closure to said opening and an unlocked position for permitting said closure to be moved away from said opening, wherein said closure is mounted an a closure carriage, said closure carriage comprising a closure grip for releasably engaging said closure, and wherein said closure grip comprises at least two closure grip parts and said closure comprises at least one closure grip mount, a closure grip part drive being provided for driving the first and second closure grip parts to engage said closure grip mount.