Patent ID: 7275402

Claim:
A lock comprising: a locking cylinder ( 2 ) having a housing ( 34 ); and a shaft ( 3 ); said shaft ( 3 ) is rotatably supported in said housing ( 34 ); said shaft ( 3 ) has a first section ( 5 ) and a second section ( 4 ), the first section ( 5 ) and the second section ( 4 ) being connectable with each other; said first section ( 5 ) comprises a first and a second part ( 9 , 10 ) being rotatable against each other, wherein the second part ( 10 ) is rotationally affixed to said first section ( 5 ); said first section ( 5 ) has a handle ( 7 ) at one of it ends, the handle ( 7 ) being rotationally affixed to said first section ( 5 ); said second section ( 4 ) is connected with said first part ( 9 ) and has a handle ( 8 ) at one of it ends, the handle ( 8 ) being rotationally affixed to said second section ( 4 ); a coupling means ( 11 ) for providing a coupling effect between said first and said second part ( 9 , 10 ) of said first section ( 5 ) of said shaft ( 3 ) upon identification of an authorization code, the coupling means ( 11 ) comprising: at least two rolling members ( 17 ); first recesses ( 18 ) arranged at said second part ( 10 ) of said first section ( 5 ) for guiding said rolling members ( 17 ); second recesses ( 20 ) arranged at said first part ( 9 ) of said first section ( 5 ) of said shaft ( 3 ), said recesses ( 20 ) being orientated in peripheral direction of said first part ( 9 ), and said recesses ( 20 ) being axially arranged corresponding to said first recesses ( 18 ) so that said first and said second recesses ( 18 , 20 ) are opposed to each other; a sliding element ( 22 ) being radially or axially movable in relation to said shaft ( 3 ) in order to displace said rolling members ( 17 ) into said second recesses ( 20 ) for establishing said coupling effect; and a driving unit ( 23 ) for actuating said sliding element ( 22 ).