Patent ID: 6685380
Filing Date: 2004-02-03
Classification: F16J,F16L,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; one or more pulling stops positioned along a periphery of the cap; an anchor fixed with respect to the hub; a leveraged pulling device including a pivot member secured to the anchor, a pulling lever pivotally connected by a connector pivot to an extending from the pivot member, a pulling connector pivotally connected to the pulling lever at a lever pivot, and a pivot mount pivotally connecting the pivot member to the anchor, the leveraged pulling device positioning the lever pivot adjacent a pulling device plane parallel to a central axis of the hub and extending between an axis of the connector pivot and an axis of the pivot mount, such that the pulling lever may be moved toward the hub into a locking position; a flexible member secured at one end to the pulling connector of the leveraged pulling device; one or more stop engagement members along the length of the flexible member to selectively engage a selected one of the one or more pulling stops on the cap, such that applying the force to the lever of the leveraged pulling device may selectively thread and unthread the cap from the hub.