Closure cap with temperature-dependent unscrewing protection

A closure cap for fastening to a fixed connector by one of:

• screwing it on, and pushing it on and turning it relative to the fixed connector, comprising:
• a cap;
• a rotatable engagement element connected to said cap, said rotatable engagement element defining a top and a radial direction;
• a valve arranged concentrically with at least said cap, said valve having sealing means which come into sealing contact with the fixed connector when the closure cap is applied to the fixed connector;
• a rocker-like coupling situated between said cap and said rotatable engagement element, and extending essentially in said radial direction, said rocker-like coupling defining, in said radial direction, one end, a further end and a pivot axis with respect to said rotatable engagement element, said further end engaging said cap as a function of the temperature in the fixed connector;
• a resilient element situated between said cap and said rotatable engagement element and in engagement with said rocker-like coupling for pushing down said rocker-like coupling at said one end thereof in the direction toward said top while said further end engages said cap;
• and
• a temperature-dependent control element situated to react to the temperature in the fixed connector to control the securement of the closure cap to the fixed connector such that said cap is fixed against relative rotation with respect to said relative rotation element when the temperature in the fixed connector is below a given level and is uncoupled from said rotatable engagement element when the temperature in the fixed connector is at or above said given level, wherein:
• said temperature-dependent control element causes a force to be exerted against said rocker-like coupling in a direction opposing the force resulting from said resilient element pushing down said rocker-like coupling at said one end thereby causing said rocker-like coupling to pivot about said pivot axis and said further end to move out of engagement with said cap, when the temperature in the fixed connector is at or above said given level.