Panic lock

A panic lock for fitting in a door, said panic lock comprising:

• a lock case;
• a dead bolt;
• a latch bolt;
• an operating bar that can move in the lock case between three positions, respectively a first, second and third position, whereby the operating bar can cooperate with the dead bolt to retract the dead bolt in the lock case by a movement of the operating bar from the first to the second position, and which can cooperate with the latch bolt to retract the latch bolt in the lock case by a further movement of the operating bar from the second position to the third position;
• a cylinder lock with a lip that can be rotated in the lock case to move the operating bar;
• two handle followers or handles that can turn coaxially with respect to one another in the lock case, respectively an inside handle follower or handle and an outside handle follower or handle that are pushed to a rest position by means of a spring;
• a finger plate and a panic plate that are affixed so that they can turn in the lock case, respectively a panic plate in order to, upon turning, retract the dead bolt by operating the inside handle follower or handle, and a finger plate to retract the latch bolt upon turning;
• whereby the inside handle follower or handle is coupled to the finger plate and the panic plate such that an angular displacement of the inside handle follower or handle from the rest position causes a movement of the panic plate that hereby moves the operating bar from the first to the second position, and that after a first phase of the angular displacement of the inside handle follower or handle the finger plate is carried along in the angular movement to retract the latch bolt,
• whereby the panic lock is provided with an operatable coupling for the mutual coupling or uncoupling of the turning movement of both handle followers or handles with respect to one another,
• wherein the coupling can be operated by a coupling rod that is slidably provided in the lock case so that it can move between two positions corresponding respectively to a coupled and uncoupled position of the handle followers or handles and whereby the coupling rod is provided with a catch that can cooperate with the operating bar for coupling the handle followers or handles when it is moved from the first to the third position, and
• wherein the catch can be put in two positions or states depending on the desired function of the panic lock, ‘position B’ that is such that upon a movement of the operating bar from the first to the third position, the coupling rod is only carried along during the movement from the second to the third position, and, a ‘position D’,
• whereby upon a movement of the operating bar the coupling rod is carried along from the first to the second position.