Methods and devices for decoding locks

Details Methods and devices for decoding locks Methods and devices for decoding locks

2006-11-27

2009-11-10

Johnson, Amy (Department: 2841)

Geometrical instruments

Gauge

Lock or key

C070S394000, C070S395000, C076S110000

Reexamination Certificate

active

07614158

ABSTRACT:
The decoding of a lock, such as a pin tumbler type of lock, is completed by utilizing a method that includes the insertion of a key blank or other material with one or more reference indicators on a modifiable surface, into a keyway of the lock. The key blank is inserted until a stopping resistance is detected. Such a resistance occurs when a pin of the lock reaches a shear line position. After such a position is reached a marking is made on the key blank and a measurement is made. The measurement is compared to markings on a novel decoding template to determine the depth of a cut that should be made on an uncut key.

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