Vase for transporting flowers has walls in form of bellows, able to expand and contract

摘要

The vase (1) for a bouquet (2) of flowers has a sealing ring (3) in the neck (4). The bouquet is covered in foil (5). The walls, which may be made of plastic, in the form of bellows, which are able to expand and contract. The walls may be formed so that they have a bi-stable relationship - the so-called"jumping frog"effect. This can be done by making the folds annular, with the radius of the outer limiting ring is always a little smaller than that of the next one in.