Patent ID: 8065897

Claim:
A lock core and key combination including a lock core including a sleeve defining an interior region and a finger-receiving notch, a core plug positioned in the interior region of the sleeve to permit rotational movement of the core plug relative to the sleeve, the core plug defining a longitudinally extending keyway and a side pin assembly passage, the side pin assembly passage being positioned adjacent to the keyway, and a side pin assembly including a side pin and a region pin positioned longitudinally adjacent to the side pin, the side pin assembly being positioned in the side pin assembly passage to move in a longitudinal direction between a first position blocking movement of the core plug relative to the sleeve and a second position permitting movement of the core plug relative to the sleeve, at least a portion of the region pin being positioned in the keyway, the side pin including a finger positioned substantially in the finger-receiving notch of the sleeve when the side pin assembly is in the first position and positioned substantially out of the finger-receiving notch when the side pin assembly is in the second position, the side pin further including a substantially cylindrical body portion and an arm extending rearward from the body portion, the finger extending transversely from the arm of the side pin, the substantially cylindrical body portion of the side pin having a central axis and the arm of the side pin having central axis parallel to and offset from the central axis of the cylindrical body portion of the side pin, and a key including a bow, and a key shank coupled to the bow, the key shank including a profile corresponding to a profile of the keyway, a longitudinally extending groove that corresponds to an exterior profile of the region pin and a shoulder that contacts the region pin upon insertion of the key shank into the keyway to push on the side pin to move the finger of the side pin substantially out of the finger-receiving notch of the sleeve.