FIELD: construction.
SUBSTANCE: presented model of the locking device has a design feature - the presence of the main package of tumblers (plates of swinging type, fixed and spring-loaded with respect to the lock case) and a composite rack, structurally made in the form of an additional pack of tumblers (fixed and spring-loaded plates with respect to the shank of collar, performing plane-parallel translational motion), working simultaneously when interacting with each other. The main and additional packages of tumblers are driven simultaneously by turning a key having two bittings, wherein one of them bittings is being positioned with the main package of tumblers, and the second with an additional package of tumblers, respectively.
EFFECT: structure of the lock provides its higher resistance against attempts of unauthorized opening by means of skeleton keys.
1 dwg
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