Patent ID: 7837049

Claim:
A container, in particular a bottle, made of thermoplastic material such as PET, and including a body having a wall and provided with at least one peripheral closed-loop designed groove that extends in a plane that is substantially perpendicular to the axis of the body, wherein the groove possesses a depth (p) that lies in the range about 3 mm to 6 mm, and wherein, in a transverse section, the groove comprises: a bottom that is substantially rounded, having a relatively small radius of curvature that lies in the range 0.2 mm to 1.5 mm; two faces that are substantially plane and that flare apart from each other on either side of said bottom, forming between them an angle that lies in the range about 50° to 90°; and two faces that are curvilinear, and connected at one end to a respective plane face, and which extend away from their respective plane face in a direction different from the direction of the plane face, such that an angle formed at the connection between the plane face and the curvilinear face is substantially less than 180°, and wherein the plane face and curvilinear face are connected thereto by respective rounded walls of relatively small radius of curvature that does not exceed 1.5 mm, and wherein the other end of each curvilinear face is connected substantially tangentially to the wall of the body; whereby the groove is an axially deformable groove that possesses a capacity to pinch axially in the presence of an axial force applied to the container.