Lock cylinder
OwnerLi-Szu Sheninventor
Life of this patent
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Abstract
A lock cylinder includes a housing and first and second key plugs rotatably received in the housing about an axis. The first and second key plugs are axially spaced in the housing and each includes a keyway for insertion of a corresponding key. The keyways of the first and second key plugs are aligned with each other along the axis. The lock cylinder further includes a blocking core fixedly mounted in the housing and between the first and second key plugs along the axis. The blocking core includes a through-hole aligned with the keyways of the first and second key plugs along the axis. The lock cylinder can effectively prevent an illegal picking tool from inserting into the keyways of the first and second key plugs and from turning the key plugs, thereby providing an enhanced anti-theft effect.
Claims10
A lock cylinder comprising:
- a housing adapted to be mounted to a lock and including front and rear ends spaced along an axis;
- at least two key plugs rotatably received in the housing about the axis and axially spaced in the housing, with each of the at least two key plugs including a keyway extending along the axis, with the keyways of the at least two key plugs allowing insertion of a corresponding key for synchronously rotating the at least two key plugs, with the keyways of the at least two key plugs aligned with each other along the axis;
- and
- a blocking core fixedly mounted in the housing and between the at least two key plugs along the axis, with the blocking core including a through-hole extending through the blocking core along the axis and aligned with the keyways of the at least two key plugs along the axis;
- wherein the blocking core is arranged to remain fixedly mounted in the housing when the at least two key plugs are synchronously rotated about the axis by the corresponding key, such that the blocking core does not correspondingly rotate about the axis under rotation of the key.
Dependencies are inferred from the claim text.