Patent ID: 7770750

Claim:
A vessel, in particular for treating articles under pressure, the vessel comprising a body having a flange, at least one lid having a flange, and connection means for connecting the body and said at least one lid, wherein the connection means comprise: a clamping ring having a U-shaped section defining a groove suitable for clamping together the flanges of the lid and the body, and first and second ends being configured to spread apart to form an opening therebetween; and engagement-and-disengagement means enabling the clamping ring to be deformed and moved relative to the flanges in such a manner as to enable the vessel to be opened and closed; wherein the engagement-disengagement means comprises spreader means for spreading apart the ends to open the clamping ring, at least two hinge elements and guide means, for guiding the clamping ring, which are diametrically opposite the opening in the clamping ring and between the two hinge elements; wherein the guide means are constituted by a rod connected to said clamping ring and passing through a guide bearing formed on a support connected to the body or to the lid, wherein an axis is formed by the rod, which is diametrically opposite the opening in the clamping ring, such that the clamping ring moves only along this axis, and wherein two hinges co-operate with the spreader means for controlling the deformation and the displacement of the clamping ring so that the flanges of the lid and the body are disengaged over their respective entire lengths from the groove of the clamping ring.