Patent ID: 9315303
Filing Date: 2016-04-19
CPC Classification: B61D,B65D

Claim Text:
1. A manway cover assembly comprising: a frame defining an opening and comprising a flange; a cover hingedly attached to the frame and thereby configured to move between a first position spaced away from the opening and a second position covering the opening; a strongback comprising a threaded opening and a plurality of arms, each arm comprising a ledge; and a ram having a threaded body and a bottom end having a spherical surface, the spherical surface at the bottom end positioned within and rotatingly connected to the cover, the threaded body positioned within the threaded opening of the strongback, the ram configured to change the relationship between the strongback and the cover as the ram rotates; wherein, the manway cover assembly is configured such that when the cover is in the second position covering the opening, each ledge of each arm is configured to move to engage the flange to move the manway cover assembly to a locked position, as rotation of the ram forces the strongback away from the cover until each ledge engages the flange.