Closure cap which can be fixed onto a container neck

Details Closure cap which can be fixed onto a container neck Closure cap which can be fixed onto a container neck

F - Mech Eng,Light,Heat,Weapons

01

P

F01P 11/02 (2006.01)

Patent

CA 2191607

The disclosure concerns a closure cap (10) which can screw onto the fixed neck (11) of a cooling system expansion tank. The closure cap is provided with a screw cap (14) and a threaded section (21) in which a combination pressure- vacuum valve (15) is mounted concentrically and in such a way that it can rotate in relation to the screw cap (14). The valve (15) is provided with a sealing element (27) which comes into tight contact with the fixed neck (11) when the closure cap (10) is screwed. To ensure that a closure cap of this type can be unscrewed only when the excess heat in the cooling system has been completely dissipated, it is proposed that the closure cap (10) when screwed onto the fixed neck (11) should be prevented from unscrewing by means of a temperature-dependent control element (37).

Un ensemble bouchon (10) vissable sur le col (11) fixe d'un vase d'expansion de système de refroidissement, comporte un bouchon vissable (14) et une section filetée (21) dans laquelle une soupape (15) combinée de surpression-dépression est montée concentriquement au bouchon vissable (14), de manière à tourner autour de celui-ci. La soupape (15) comporte un élément d'étanchéité (27) qui vient en contact étanche avec le col (11) fixe au moment où l'ensemble bouchon (10) est vissé. Afin que, lorsque des systèmes de refroidissement se trouvent encore à des températures trop élevées, un tel ensemble bouchon ne puisse être dévissé qu'après que la température excessive ait totalement disparu, il est prévu que, lorsqu'il est vissé sur le col (11) fixe, l'ensemble bouchon (10) ne puisse pas être dévissé grâce à la présence d'un élément de commande (37) dépendant de la température.

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