Patent ID: 7673484

Claim:
A key lock assembly, comprising: a core assembly, comprising a core, formed with a keyway to accept a key, mounted to a fixture for rotation along a first break point formed between the core and the fixture; pin assemblies each mounted to the core assembly and each formed with a second break point; a block assembly, mounted to the core assembly, comprising an outermost block, an innermost block, and a third break point formed between the outermost and innermost blocks; the pin assemblies and the block assembly movable in reciprocal directions relative to the keyway between first positions, respectively, to place the key lock assembly in a locked position locking the core relative to the fixture and second positions, respectively, placing the key lock assembly in an unlocked position unlocking the core relative to the fixture; the locked position of the key lock assembly comprising the innermost block of the block assembly concurrently engaging each of the pin assemblies and the pin assemblies and the block assembly interacting between the core and the fixture preventing the core from rotating relative to the fixture; the unlocked position of the key lock assembly comprising the key inserted into the keyway interacting with and displacing the block assembly and the pin assemblies concurrently registering the second and third break points with the first break point permitting the core to rotate relative to the fixture; a bias applied to each of the pin assemblies biasing each of the pin assemblies into the first position; and spaced-apart biases applied to the block assembly each biasing the block assembly into the first position.