초록 ▼

A resettable single-barrel single-plug cylindrical two section lock assembly is provided wherever master keying is required. The lock of the invention is intended to be operated and reset by three different keys. One key (#1 key) is used to turn the lock to a position in which it may be reset by eit

A resettable single-barrel single-plug cylindrical two section lock assembly is provided wherever master keying is required. The lock of the invention is intended to be operated and reset by three different keys. One key (#1 key) is used to turn the lock to a position in which it may be reset by either of the other two keys. One of the other two keys (#2 key) operates a first section of the dual lock; and the other of the other of the two keys (#3 key) operates a second section of the lock which is independent of the first section. Either section may be reset by inserting the existing #2 or #3 key into the lock once the lock has been turned by the (#1) key to a predetermined position, and then turning the lock to the reset position, and after the existing key has been withdrawn, turning the lock back to its normal operating position by the new key, either the #2 or #3 keys, depending upon which section of the lock is being re-keyed.

대표청구항 ▼

A lock assembly including: a barrel; a plug rotatably mounted in said barrel; a plurality of flat follower members positioned on said plug in spaced parallel relationship along said plug and extending across said plug, each of said follower members having a serrated edge; and at least two flat tumbl

A lock assembly including: a barrel; a plug rotatably mounted in said barrel; a plurality of flat follower members positioned on said plug in spaced parallel relationship along said plug and extending across said plug, each of said follower members having a serrated edge; and at least two flat tumblers, each having a serrated edge, positioned adjacent to one another on the serrated edge of each of said follower members to be individually settable to independent positions with respect to the corresponding follower member.