Tool-less closure

摘要

A closure comprises a hub with a central opening and a head positionable within the hub, the head sealing the central opening when in a closed position, a spool rotatable about a post extending from the head, wherein rotation of the spool causes axial movement of the spool along the post, a plurality of radial arms extending from the spool to a plurality of locking segments.

主权项

1. A closure for pressurized system or vessel, comprising:
a hub having a generally cylindrical shape with a central opening; a head positionable within said central opening of said hub and removable from said central opening of said hub; a davit operably engaging said head to at least one of lift and lower said head from within said central opening; a central post extending from said head; a spool having a plurality of arms extending from said spool, said spool rotatably positioned about said post; said radial arms pivotally connected to said spool and pivotally connected to a locking ring segment, said locking ring segment having a recess for pivotally receiving said radial arm; said spool and said post operably engaged wherein pivotal motion of said spool causes said spool to move axially along said post; said locking ring segment and said head having tapered surfaces allowing axial movement of said locking ring segment along said head with said axial movement of said spool.