Patent ID: 7918115

Claim:
A lock and key arrangement with a removable core, comprising: a cylinder housing ( 10 ) which has a generally circular opening ( 10 a ); a generally cylindrical cylinder core ( 20 ) which is accommodated in the circular opening of the cylinder housing and which includes a key slot ( 20 a ) for receiving a coded key ( 30 ; 30 ′); a number of code pins ( 22 ) which can be moved by actuation of key code surfaces, wherein at least part of the code pins is disposed in a recess ( 20 b ) in the barrel surface of the cylinder core; a cam adapter ( 40 ) which is rotatably mounted in the circular opening of the cylinder housing and which is connected operatively to a cam ( 42 ); characterized in that the recess ( 20 b ) extends longitudinally; in that the cam adapter includes an engagement portion ( 40 c ) which in an operative position of the cylinder core engages in the longitudinally extending recess ( 20 b ) in a mantel surface of the cylinder core; and in that at least one of the code pins is movable between a blocking position in which an engagement portion of a cam adapter co-acts with at least one of the code pins for preventing relative axial movement of the cam adapter and the cylinder core, and a release position in which mutual axial movement between the cam adapter and the cylinder core is permitted.