Releasable retaining means for a closure element

A releasable retaining means for mounting on the inside of an outward opening closure element movable to open and close an opening the retaining means comprising in combination a first mounting means mountable on such element, a second mounting means mountable on a surround of such opening, and a stay which is slidably and pivotably coupled to one of the mounting means, the stay and said one mounting means being provided with interengaging guide means to guide slidable movement of the stay relative to said one mounting means said stay having engagement means by which the stay is pivotably couplable to said other mounting means and releasable therefrom when and only when the two mounting means are in a relationship which, in use, corresponds to a closed position of the closure element, said release of the stay from said other mounting means being achieved by the stay being slid relative to said other mounting means to a position where the engagement means and said other mounting means can be moved apart, and recoupling means which automatically cause the engagement means to couple to said other mounting means when the two mounting means are moved relative to each other into said relationship.