| 摘要 |
The closure has a pair of opposing jaws (15a,b) mounted radially on the lid (1), movable by a manual control knob (50) between locked and unlocked positions. A pair of drive rods (20a,b) connect the jaws to the control knob actuating mechanism, each rod having a transverse locking aperture part-way along its length. At least one valve (10) is mounted in the lid, such that when the container is locked and pressurised the valve body projects upwardly into the transverse aperture of one of the drive rods to prevent movement of the rod. When the interior of the container is below a predetermined pressure, the valve body disengages a stop surface of the aperture to allow movement of the rods. <IMAGE> |
