US Patent 9302840 Container having deformable flanks

A container made of thermoplastic material having a body in which at least one side panel is hollowed out, the container including a central zone having, in a longitudinal plane, a concave profile, and an adjoining zone longitudinally extending the central zone and having, in a longitudinal plane, a convex profile. The central zone and the adjoining zone are stiffened, and the junction between the central zone and the adjoining zone defines a deformable membrane.