Patent ID: 10837138

Abstract:
The invention comprises of two types of units, which can be assembled and joined together to form a chain. Front part (2) of each unit consists of oval reinforced enlargement with a boss shape (5) having a cylindrical neck (6) and a circular enlargement (9) with a reinforced ledges (7). The end part (4) of each unit consists of a formed drop-shaped opening (17), an entrance (18) and a part-circular recess (19) for receiving the neck (6). The recess (19) has a mouth shape to allow the neck (6) to pass through it with an interference fit to provide a hinge attaching each unit to another. The intermediate part (3) consists of linear and waved pinch slot (10) formed between two semi rigid side portions of the moulding which diverge away from one another so that the pinch slot (10) can be created.