Patent ID: 8746659

Claim:
A device for opening a door in a door frame by staving in the door, wherein the device can exert a thrust on a vertical surface of the door and stave in the door when the device is positioned against the door on the side to which the door opens by being pulled, the device comprising: an actuator, an intermediate soleplate, and an upper jacking bar; said actuator comprising a movable rod with one end hingedly fixed on said intermediate sole plate; and said upper jacking bar being hingedly fixed on said by one end thereof to said intermediate soleplate; an upper jacking device hingedly fixed to the upper end of said upper jacking bar, said upper jacking device comprising at least one wedging and locking part forming: a front fiat portion that can be introduced into a slit between the doer frame and the upper end of the door; and a riser portion extending in a longitudinal direction YY′ perpendicular to and above said front flat portion, the upper end of said riser portion being intended to face a partition above the door frame; and a rear portion located at the base of and behind said riser portion, at the underside of which a fixing element is capable of allowing pivotal hinging of said wedging and locking part relative to the upper end of said jacking bar.