Patent ID: 8828164
Filing Date: 2014-09-09
Classification: B29C,B29D,F16J

Abstract:
1. A chamber with variable internal pressure, comprising: a sealed connection assembly configured to slide inside a translation plane, said connection assembly including: a rigid first part having an orifice and a flat first surface surrounding said orifice; and a rigid second part having a flat second surface surrounding a central portion of said second part; the first and second parts being arranged so that the central portion of the second part faces the orifice of the first part, with the first and second surfaces being parallel and facing one another, one of the first and second surfaces including a groove surrounding the respective orifice or central portion to form a closed path; a planar seal with a flat active surface, the planar seal being circular ring-shaped and arranged in the groove so that the active surface of said planar seal is in continuous contact, along the closed path, with the flat surface of the other one of the first and second parts that is not the one including the groove, called the counter surface; at least a first O-ring seal arranged between the planar seal and a bottom of the groove, a depth of the groove being between a thickness of the first O-ring seal and a sum of said thickness of the first O-ring seal and a thickness of the planar seal; a movement control system configured to control displacement of the first and second parts relative to each other, along two axes parallel to the translation plane, and to produce a sliding of the active surface of the planar seal against the counter surface; and a compression system for the first and second parts, arranged to compress the planar seal against the counter surface, producing a compressive force for said planar seal through the first O-ring seal, perpendicular to the translation plane, wherein said first part forms at least a portion of a wall of said chamber, and the second part is connected to a holder extending inside said chamber, so that said holder is movable relative to the chamber, along directions of translation that are parallel to said translation plane, when the movement control system is actuated.