High-security cylinder lock based on bridge tumblers
OwnerDerek Baverinventor
Life of this patent
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Abstract
A bridge tumbler lock has tumblers that both slide and pivot, with their motion controlled by pairs of key interfaces. A sidebar is released to permit lock opening movement when all tumblers are in their correct positions. This results in a lock that is resistant to release of information due to partially correct key combinations occurring in the course of a lock picking attempt and thus enables enhanced security in an economical, effective lock construction.
Claims12
A cylinder lock with a cylinder rotatable in a housing for locking/unlocking in response to key insertion in a keyway of the cylinder with one or more rotatable tumblers each having at least one projection and at least one hole, that, in response to key insertion, can slide linearly in a plane and also rotate each tumbler, having its axis of rotation perpendicular to its direction of sliding.
Dependencies are inferred from the claim text.