The disclosure relates to a cylinder lock wherein an eccentric barrel pin assembly with two contact points within the keyway are independently movable within the barrel to a common shear line against a single nested column pin assembly.

A key or key blank includes a key blade having a first edge, a second edge, and first and second opposed sides. The first edge has one or more edge bittings to elevate and/or rotate one or more tumbler pins of a lock with a vertically-oriented keyway, and one of the opposed sides has one or more side bittings to elevate and/or rotate one or more tumbler pins of a lock with a horizontally-oriented keyway. Side warding surfaces on the key blank are shaped and positioned to minimize the interference of peaks between the skewed bitting cuts on the key. A lock has a keyway configured for the key having edge bittings to elevate and/or rotate one or more tumbler pins of a vertical lock and side bittings to elevate and/or rotate one or more tumbler pins of a horizontal lock.

Provided is a key lock operable for locking and unlocking a latch control mechanism. The key lock includes a key collar with a front face, an outer cylindrical surface, and a longitudinally extending key slot. A center collar is concentrically disposed about the key collar such that an inner cylindrical surface of the center collar is fit to and rotatable on the outer cylindrical surface of the key collar. A series of cylindrical rotating pins are disposed in the center collar, each rotating pin having a notch with a key ID surface configured to engage one of a corresponding series of ID cut surfaces of a key when the key is inserted in the key slot and rotated to a key verification position, thereby rotationally orienting each pin at a respective ID position.

The locking device includes a key having a cylindrical shaft in which a guide groove is formed in the axial direction, and a cylinder lock which includes an outer cylinder, an inner cylinder, a locking bar and a tumbler, the inner cylinder has an inner cylinder main body rotatably accommodated in the outer cylinder, a rod fixed to the inner cylinder main body, and a key insertion slot, the locking bar is interposed between the inner cylinder main body and the outer cylinder and prevents the rotation of the inner cylinder by engaging and disengagingly locking the inner cylinder main body and the outer cylinder, and the tumbler has a guide convex portion engageably and detachably engaged with the key groove, and an inner concave portion rotatably received in the inner cylinder and dropping the locking bar.

An exemplary lock cylinder includes a shell, a plug positioned in the shell, and a locking assembly. The locking assembly is configured to prevent rotation of the plug when no key is inserted, and to permit rotation of the plug upon insertion of any of a plurality of keys having different bitting profiles. The locking assembly may further be configured to prevent key extraction when the plug is in a rotated position.

A rekeyable lock cylinder with a cylinder body and a plug assembly. The lock cylinder includes a plurality of key followers and a corresponding plurality of racks disposed in the plug assembly. The lock cylinder includes, for example, a locking bar for blocking rotation of the plug assembly with respect to the cylinder body to prevent unlocking of the rekeyable lock cylinder with an unauthorized object. In some embodiments, the locking bar is configured such that torqueing the plug assembly with an unauthorized object applies force to the locking bar without translating such force to the plurality of racks. This type of arrangement enhances torque resistance of the lock cylinder against attempted forced entry.

A key-operated lock comprising a housing, a core and a set of pin stacks. The housing has a set of driver chambers and a set of inactive master-pin chambers. Each pin stack comprises pin stack elements, which include a driver and a tumbler. The driver is movably mounted in one of the driver chambers. The tumbler assembly is movably mounted in the core for radial movement relative to the bore in the body. Further, the tumbler assemblies including a plurality of releasably engaged parts movable relative to each other upon disengagement to change a dimension of the tumbler assemblies. Additionally, for at least one of the pin stacks, the pin stack elements further comprise one or more master pins.

Provided is a key lock operable for locking and unlocking a latch control mechanism. The key lock includes a key collar with a front face, an outer cylindrical surface, and a longitudinally extending key slot. A center collar is concentrically disposed about the key collar such that an inner cylindrical surface of the center collar is fit to and rotatable on the outer cylindrical surface of the key collar. A series of cylindrical rotating pins are disposed in the center collar, each rotating pin having a notch with a key ID surface configured to engage one of a corresponding series of ID cut surfaces of a key when the key is inserted in the key slot and rotated to a key verification position, thereby rotationally orienting each pin at a respective ID position.

The disclosure relates to a cylinder lock wherein an eccentric barrel pin assembly with two contact points within the keyway are independently movable within the barrel to a common shear line against a single nested column pin assembly.

A cylinder lock and an associated key, the lock including a fixed body and a plug which is accommodated within a respective cavity of the body and can rotate with respect to the body. The plug includes a substantially longitudinal compartment for the functional accommodation of a key which includes a grip portion from which an elongated body extends and which is provided with coding grooves and protrusions on its outer surface. Between the plug and the body are respective accommodation channels for translating coding elements, which open onto the substantially longitudinal compartment. The plug includes at least one auxiliary duct which faces the substantially longitudinal compartment and extends at least partially in the body for the sliding accommodation of at least one coding unit that includes at least one pin and at least one conical portion.