Abstract: The invention relates to a space containment method including the following steps: applying a flexible envelope, which is made from a material that can shrink in an essentially uniform manner, around a support frame, the frame being an assembly of frame elements; and subjecting the envelope to the effects of a suitable physical phenomenon in order to generate the shrinkage thereof. Following contraction, the envelope tightly hugs the support frame, thereby stiffening the containment structure thus obtained.

Abstract: An adjustment system for a seat including at least one foot adapted to be mounted to the seat, and a slideway having a longitudinal slot configured to receive the foot in a sliding manner. The foot has an expandable mechanism with locking members having symmetric and opposed action relative to a central longitudinal plane. The slideway has a plurality of locking portions. The expandable mechanism has a first position in which the locking members are oriented with a first transverse width such that the expandable mechanism can be introduced into and extracted from the slot. The mechanism has a second position where the locking members have a second transverse width such that a locking member is engaged to a locking portion, thereby immobilizing the foot relative to the slideway.

Abstract: A device for adjusting a longitudinal position of a subassembly, in particular a seat of an automobile, is positionable on a horizontal floor of a passenger compartment of a vehicle which includes a movable expandable mechanism to lock and unlock the device in different positions.