Patent ID: 8840153

Claim:
An upper lock system of a passive door blade of a double door, the system comprising a bolt arranged to be installed to an upper surface of the passive door blade and arranged to be controlled by means of a pull bar, wherein the system comprises a lock and an interface part, the lock comprising said bolt and a power transmission connection part for the interface part, the interface part comprising a grabber module, a power transmission mechanism and a resilient means, the grabber module being arranged to linearly move between an extended position and a retracted position and the resilient means being arranged to push the grabber module towards the extended position, the power transmission mechanism being operationally connected to the grabber module and the power transmission connection part, a position of the power transmission mechanism depending on a position of the grabber module, in which retracted position the grabber module being arranged to form a connection to the pull bar and the lock being in open state, and in which extended position the grabber module being arranged to maintain the connection between the pull bar and the grabber module and the lock being in the locked state, the connection additionally being disengageable in the extended state, wherein the grabber module comprises a grabber piece and a chamber for the pull bar, the grabber piece being rotatably connected to the body of the grabber module and the grabber niece comprising a grabber extension for catching the pull bar, the grabber module additionally comprising a second resilient means arranged to rotate the grabber extension of the grabber piece towards the chamber.