Patent ID: 6857536
Filing Date: 2005-02-22
Classification: G01M

Abstract:
1. An apparatus for locking a closure assembly in a closed position, the apparatus comprising: a hub having an opening therethrough; a head removably attachable to said hub via a lug-type holding arrangement and movable between an open position and a closed position; a releaseable lock element movable between an unlocked position and a locked position that locks said head in the closed position; a pressure warning/release device movable between a sealed position and a warning position, and which is operably connected to said locking element so that the pressure warning/release device must be in the warning/release position in order for the locking element to be unlocked; and a support device comprising a swivel mount housing arranged on said hub and a davit arm mounted in said swivel mount housing and attached to said head at one end, wherein said swivel mount housing is arranged to allow said davit arm to swivel on said hub in a plane and comprises two concave rollers, wherein said davit arm is adapted to cooperate with said concave rollers to allow said davit arm to move in a longitudinal direction in said plane relative to said swivel mount housing and to swivel about said longitudinal direction.