Patent ID: 7424815

Claim:
A reprogrammable lock comprising: a stator ( 1 ) in the form of a hollow cylinder, a rotor ( 2 ) in the form of a cylindrical block mounted rotatably inside the stator ( 1 ), a plurality of key reading plates ( 3 ) disposed transversally inside the rotor ( 2 ) and provided with slots ( 3 a ) disposed in register with one another to allow the passage of a user key or a programming key ( 8 , 9 ) whose coding profile ( 8 b , 9 b ) defines the movement of said key reading plates ( 3 ), a plurality of locking plates ( 4 ) mounted transversally in said rotor ( 2 ) and provided with one end which protrudes outward from the rotor ( 2 ) to engage in a cavity ( 1 c ) defined inside said stator ( 1 ) so as to block rotation of the rotor ( 2 ) with respect to the stator ( 1 ), said locking plates ( 4 ) being able to couple with said key reading plates ( 3 ) so as to be able to be moved into an unlocking position to allow rotation of the rotor with respect to the stator, at least two lateral inserts ( 6 ) movable transversally in said rotor ( 2 ) together with the locking plates ( 4 ), said lateral inserts ( 6 ) being provided with an arched surface ( 6 b ) adapted to slide on the inner surface of the stator ( 1 ), and a rotation stopping plate ( 10 ) disposed transversally inside said rotor ( 2 ) and provided with a slot ( 10 a ) disposed in register with the slots ( 3 a ) of said key reading plates to allow the passage of the key ( 8 , 9 ), said rotation stopping plate ( 10 ) being provided with an end which protrudes outward from the rotor ( 2 ) to engage in a cavity ( 1 c ) defined inside said stator ( 1 ) so as to block the rotation of the rotor ( 2 ) with respect to the stator ( 1 ) and being adapted to require the programming key ( 9 ) to unlock rotation of the rotor with respect to the stator.