Patent ID: 7040126

Claim:
A lock comprising: a shell having a bore formed therein; a plug mounted within the bore and having a first set of bores aligned with a second set of bores in the shell; a keyway extending in the plug for receiving a key; a plurality of pin tumblers disposed in the first set and the second set of bores; one or more chambers formed in the plug and intersecting a portion of the keyway; and one or more locking members disposed within said chamber and aligned with a recess in said plug; and wherein the plug further comprising a rib for preventing said one or more locking members from completely entering the keyway and wherein said rib intersects at least one of said one or more locking members such that a center portion of said at least one of said one or more locking members engages said rib and two different edge portions of said at least one of said one or more locking members intersects with said keyway, wherein said two different edge portions are separated by said center portion.