Patent ID: 6786670
Filing Date: 2004-09-07
Classification: B01J,F16J,F16L,F17C,Y10T

Abstract:
A closure to sealingly enclose a port in a vessel, comprising:a hub having a vessel end fixedly and sealingly secured to the vessel, a through bore, a cap end opposite the vessel end, and a cap engagement thread on the cap end; a cap including a hub engagement thread for threaded engagement with the cap engagement thread; an anchor fixedly secured with respect to the hub; a plurality of stops each positioned along a periphery of the cap; a collar supported on the anchor and having internal threads for mating engagement with a threaded rod; the threaded rod passing through the collar, such that rotation of one of the collar and the threaded rod moves the threaded rod axially with respect to the anchor; and a stop engaging member positioned on the threaded rod for engagement with a selected one of the plurality of stops to thread and unthread the cap from the hub.