Lock cylinder assembly

Claim 1

A SIDE BAR LOCK CYLINDER ASSEMBLY COMPRISING, IN COMBINATION, A CASING STRUCTURE, A PLUG STRUCTURE MOVABLY MOUNTED WITHIN SAID CASING STRUCTURE, A PLURALITY OF TUMBLERS, EACH TUMBLER INCLUDING A SIDE BAR RECEIVING OPENING, MEANS MOUNTING SAID TUMBLERS ON ONE OF SAID STRUCTURES FOR MOVEMENT BETWEEN AN UNLOCKED POSITION, WHEREIN SAID OPENINGS ARE SUCCESSIVELY ALIGNED, AND A LOCKED POSITION WHEREIN SAID OPENINGS ARE MISALIGNED, A SIDE BAR ASSEMBLY MOHNTED ON ONE OF SAID STRUCTURES FOR MOVEMENT BETWEEN LOCKED AND UNLOCKED POSITIONS, MEANS ON SAID SIDE BAR ASSEMBLY INTERLOCKING SAID CASING STRUCTURE AND SAID PLUG STRUCTURE WHEN SAID SIDE BAR ASSEMBLY IS IN LOCKED POSITION AND FREEING SAID PLUG STRUCTURE FOR MOVEMENT RELATIVE TO SAID CASING STRUCTURE WHEN SAID SIDE BAR ASSEMBLY IS IN UNLOCKED POSITION, SAID ASSEMBLY INCLUDING A PLURALITY OF INDIVIDUAL LOCKING MEMBERS RESPECTIVE TO SAID TUMBLERS AND HAVING AT LEAST ONE SURFACE THEREOF NORMALLY LYING IN A PLANE OF MOVEMENT OF SAID SIDE BAR ASSEMBLY, MEANS MOUNTING SAID LOCKING MEMBERS ON SAID ASSEMBLY FOR INDIVIDUAL MOVEMENT RELATIVE THERETO, SAID TUMBLER OPENINGS EACH INCLUDING AN EDGE PORTION LYING IN A PLANE IN PARALLEL SPACED RELATIONSHIP TO THE PLANE CONTAINING THE LOCKING MEMBER SURFACES WHEN SAID TUMBLERS ARE IN UNLOCKED POSITION, EACH OPENING RECEIVING A RESPECTIVE LOCKING MEMBER TO PERMIT SAID SIDE BAR ASSEMBLY TO MOVE TO UNLOCKED POSITION, THE LOCKING MEMBER SURFACES BEING LOCATED IN JUXTAPOSED PARALLEL RELATIONSHIP TO THE TUMBLER OPENING EDGE PORTIONS IN SAID UNLOCKED POSITION OF SAID ASSEMBLY.