A casement lock for locking a door, the casement lock having a casement lock housing, an actuation element rotatably mounted on the casement lock housing, and a locking element which is coupled with the actuation element and can be translationally moved in a first angular range of the actuation element and rotationally moved in a second angular range of the actuation element, the actuation element being axially secured by securing means in the first angular range and being axially released by the securing means in the second angular range.

A security door lock for security back locking of a door lock. The door lock enables back locking of the door lock from inside in such a way that the lock cannot be opened with a key or a picklock. The lock includes a lock body, a lock bolt inside the lock body, a lock bolt shifter inside the lock body, a lock bolt shifting lever protruding from the lock bolt shifter, a slot in the lock body for receiving the lock bolt shifting lever which is turnable between its inclined end positions in the slot when the lock bolt shifter is rotated, a twist knob inside the door for rotating the lock bolt shifter, a key cylinder outside the door, and an opening spindle present between the twist knob and the key cylinder. The opening spindle is in engagement with the lock bolt shifter for shifting the lock bolt by tuning the key or the twist knob. A security latch is movable from a security locking release position to a security locking position in which the security latch covers the slot in the lock body thereby preventing turning of the lock bolt shifting lever between its inclined end positions and locking the lock bolt shifter in a non-rotatable manner against turning effected with the key or the twist knob.

A security door lock for security back locking of a door lock. The door lock enables back locking of the door lock from inside in such a way that the lock cannot be opened with a key or a picklock. The lock includes a lock body, a lock bolt inside the lock body, a lock bolt shifter inside the lock body, a lock bolt shifting lever protruding from the lock bolt shifter, a slot in the lock body for receiving the lock bolt shifting lever which is turnable between its inclined end positions in the slot when the lock bolt shifter is rotated, a twist knob inside the door for rotating the lock bolt shifter, a key cylinder outside the door, and an opening spindle present between the twist knob and the key cylinder. The opening spindle is in engagement with the lock bolt shifter for shifting the lock bolt by tuning the key or the twist knob. A security latch is movable from a security locking release position to a security locking position in which the security latch covers the slot in the lock body thereby preventing turning of the lock bolt shifting lever between its inclined end positions and locking the lock bolt shifter in a non-rotatable manner against turning effected with the key or the twist knob.

A door locking system includes a first locking assembly and a second locking assembly. The first and second locking assemblies each have a locking actuator mounted on a door and a catch plate mounted on a door frame. Each of the locking actuators includes a lever and a locking plate, such that, in response to rotating the lever from an open position to a close position, the locking plate rotates from an unlocked position to a locked position, respectively, in which the locking plate is inserted into a groove of the corresponding catch plate when the locking plate is in its locked position.

Systems, methods, and apparatus are disclosed involving a door blocking apparatus to reduce a likelihood of, and possibly prevent, opening of a door by unauthorized personnel. The apparatus may be networked in a security system and may be connectable to an online security platform. In a particular embodiment, an embodiment of the invention may include a security system involving a plurality of door locations having a plurality of networked door blocking apparatus. Each door blocking apparatus may include a door blocking mechanism operable by a user on a safety side of a door, such as having the user rotate an apparatus handle that rotates the door blocking mechanism between a non-blocking position and a blocking position. In the non-blocking position, the door blocking apparatus does not block the door from opening and closing. In the blocking position, the door blocking apparatus blocks the door from opening and from closing completely.

Systems, methods, and apparatus are disclosed involving a door blocking apparatus to reduce a likelihood of, and possibly prevent, opening of a door by unauthorized personnel. The apparatus may be networked in a security system and may be connectable to an online security platform. In a particular embodiment, an embodiment of the invention may include a security system involving a plurality of door locations having a plurality of networked door blocking apparatus. Each door blocking apparatus may include a door blocking mechanism operable by a user on a safety side of a door, such as having the user rotate an apparatus handle that rotates the door blocking mechanism between a non-blocking position and a blocking position. In the non-blocking position, the door blocking apparatus does not block the door from opening and closing. In the blocking position, the door blocking apparatus blocks the door from opening and from closing completely.