Device for filling of a container of collapsible type

1. A device for filling a container of a collapsible type with a liquid product, said container having a compartment which is defined by flexible walls and whose volume is dependent on the relative position of the walls and which communicates with the surroundings via a filling duct of the container, said device comprising

a filling tube with an end portion, which is insertable into said filling duct of the container for supplying a product to the compartment of the container through said filling tube;

a clamp, which is adapted to grasp the end portion and the filling duct when said end portion is inserted into said filling duct to provide a seal between the end portion and the filling duct,

the clamp having gripping surfaces which are arranged to cooperate with the circumferential surface of the end portion in the state of the clamp grasping said filling duct and said end portion to provide said seal between the end portion and the filling duct,

each gripping surface having opposite edge portions, a bead being arranged in each edge portion,

which end portion has a circumferential surface which is formed of two opposite partial surfaces which each comprise a convexly curved central portion and a concavely curved side portion arranged on each side of the central portion,

the partial surfaces being arranged with the convexly curved central portions facing away from each other,

the side portions of the opposite partial surfaces on the respective sides of the central portions connecting to each other in a converging manner, and

each concavely curved side portion forming a recess in the neighbouring convexly curved central portion.

2. A device as claimed in claim 1 , in which each gripping surface is elastic.

3. A device as claimed in claim 2 , in which said clamp comprises two jaws which are to be brought together, each jaw having one of said gripping surfaces.

4. A device as claimed in claim 2 , in which the gripping surfaces of the clamp are arranged to cooperate each with a partial surface of the circumferential surface of the end portion in the state of the clamp gripping said filling duct and said end portion.

5. A device as claimed in claim 1 , in which said clamp comprises two jaws which are to be brought together, each jaw having one of said gripping surfaces.

6. A device as claimed in claim 5 , in which the side portions on the respective sides of the central portions of the partial surfaces converge at a point which is arranged in a parting line of said pair of jaws.

7. A device as claimed in claim 6 , in which the gripping surfaces of the clamp are arranged to cooperate each with a partial surface of the circumferential surface of the end portion in the state of the clamp gripping said filling duct and said end portion.

8. A device as claimed in claim 5 , in which the gripping surfaces of the clamp are arranged to cooperate each with a partial surface of the circumferential surface of the end portion in the state of the clamp gripping said filling duct and said end portion.

9. A device as claimed in claim 1 , in which the gripping surfaces of the clamp are arranged to cooperate each with a partial surface of the circumferential surface of the end portion in the state of the clamp gripping said filling duct and said end portion.