Patent ID: 6446307
Filing Date: 2002-09-10
Classification: B65D,E02D,E05F,E05Y,Y10T

Abstract:
A chamber closure assembly, including:a manway; a lid pivotally mounted to the manway by a hinge pin; and a lid lifter assembly, including: a mount having a first locating surface to be mounted on the hinge pin, and the mount having a second locating surface to bear on an outer peripheral surface of the manway without being securely affixed thereto for locating the mount relative to the manway; a cam member having a first surface to be mounted on the hinge pin, whereby the cam member is rockable on the hinge pin; and the cam member having a second surface to bear on a outer peripheral surface of the lid without being securely affixed thereto; and the cam member having a third surface to receive and bear against a biasing device; said biasing device engaging the mount and the third surface of the cam member to bias the cam member in a direction to urge the second surface of the cam member to bear on said outer peripheral surface of the lid.