Commissariat a L'energie Atomique Et Aux Energies Alternatives

Commissariat a L'energie Atomique

Denis Chatain

Jean-Paul Perin

Jean-Marie David

Marc Chichoux

Gaël Paquignon

Didier Brisset

Gilles Diolez

The extrusion device of a solid film comprises a cell provided with an input opening of a material designed to form the solid film, and an output opening of the solid film from the cell. The device comprises a first heat exchanger for applying a first temperature to the output opening and a second heat exchanger for applying a second temperature in a first zone of the cell distinct from the output opening and a control circuit imposing first and second sets of first and second temperatures. The first set enables a volume of the material in solid phase to be formed. The second set enables a temperature gradient to be generated in the volume so as to generate a pressure forcing extrusion of the solid film via the output opening.

Device and method for extrusion of a solid body

The joint comprises a ball () held between two seats (and) of the members () to be joined, and it further comprises fittings () bound to the members () respectively, connected together through an intermediate jointed ring (). A spring () maintains the contact between the ball and the seats. A rim () of the ring retains the ball () in case of disjunction. The ball () provides large accuracy in the position of the centre of rotation and the remainder of the joint maintains cohesion of the assembly.

Precision ball joint

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Saint Ismier, France

Denis Chatain