Re-keyable lock with improvements for preventing incomplete...

Details Re-keyable lock with improvements for preventing incomplete... Re-keyable lock with improvements for preventing incomplete...

2011-07-12

2011-07-12

Barrett, Suzanne D (Department: 3673)

Locks

Operating mechanism

Key

C070S492000

Reexamination Certificate

active

07975518

ABSTRACT:
A re-keyable cylinder lock includes a plug inserted into a lock housing and having a plurality of radial holes connected to a key hole. The lock housing has a first engaging element provided in an inner surface thereof. A limit unit has a second engaging element and is inserted into one of the radial holes located at a predetermined depth of the key hole. The first engaging element engages the second engaging element to limit the plug from rotating when a replacement key which is inserted into the key hole for re-keying does not reach a predetermined depth of the key hole. Incomplete re-keying can therefore be prevented.

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