A lock assembly includes a plug with a keyway, primary pins aligned with the keyway, a sidebar, secondary pins adjacent the keyway, and at least one supplemental sidebar control element for controlling movement of the sidebar. A key blank has a key blade with a primary top edge to receive primary bittings for controlling the primary pins, a rib to receive secondary bittings for controlling the secondary pins, and at least one shuttle pin. The shuttle pin engages a multi-level ridge within the keyway to move the shuttle pin from a retracted position to an extended position in which an end of the shuttle pin actuates the supplemental sidebar control element.

A cylinder lock and key combination with a key slot and at least one dual tumbler assembly for locking a key plug against rotation. The dual tumbler assembly includes an outer pin movable elevationally in a chamber in the key plug, and an inner pin movable telescopically in a cylindrical bore in the outer pin. The outer pin is provided with at least one key contacting end portion for engagement with a first code portion of a key blade upon insertion thereof in the key slot. The inner pin is provided with at least one key contacting end portion, for engagement with a second code portion of the key blade. The key contacting end portions of the outer and inner pins of the tumbler assembly are located adjacent to each other at axially and radially well-defined code positions relative to a center-line of the tumbler assembly.

A latch mechanism includes a hook-handle assembly coupled to a first panel and a clevis coupled to a second panel. The hook-handle assembly engages the clevis to secure the first panel relative to the second panel.

A latch mechanism includes a hook-handle assembly coupled to a first panel and a clevis coupled to a second panel. The hook-handle assembly engages the clevis to secure the first panel relative to the second panel.

A locking system comprises a lock cylinder which has a cylinder housing, a cylinder core rotatably supported in the cylinder housing and having a keyway, and has a plurality of tumblers which partly project into the keyway, and which furthermore comprises a key which has a key bow and a key shaft which has a shaft profile for acting on the tumblers. An abutment section is formed at the key shaft between the key bow and the shaft profile, said abutment section having an abutment profile having at least one projection and an undercut formed between the projection and the shaft profile. The lock cylinder furthermore comprises a movable counter-abutment. In this respect, the abutment section of the key and the movable counter-abutment of the lock cylinder are arranged and configured such that, on an introduction of the key into the keyway, the abutment section abuts the movable counter-abutment with at least one abutment surface within the keyway and in so doing forms the only active abutment formed at the key for limiting the introduction of the key into the keyway to a correct axial introduction depth.

A lock comprises: a body with a housing comprising a first and a second portion mutually adjacent along an longitudinal development direction corresponding to an insertion direction of a key; a first rotor with a further housing, rotationally housed within the first portion of the housing of the body; a second rotor comprising a first portion rotationally housed within the second portion of the housing of the body; a second portion rotationally housed within the further housing of the first rotor. The second rotor, inserting the key, translates along the longitudinal development direction of the body with respect to the first rotor and, by a first rotation portion of the key, rotates with respect to the first rotor, passing from disengaging to engaging the first rotor, wherein the first rotor and the second rotor, by a second portion of rotation of the key, integrally translate to actuate the lock.

A tumbler pin lock includes one or two auxiliary locking mechanisms including an auxiliary locking pin, and an auxiliary blocking component to provide enhance locking in addition to the locking provided by the tumbler pins so that the lock remains locked even if the tumblers are picked or bumped into their unlocked positions. A cylinder lock is provided with an auxiliary locking pin which projects into the keyway, which, with the proper key, is slid forward with a mobile device into an area in the lock housing where an auxiliary groove allows the cylinder plug to turn. The second locking component, which is approximately rectangular similarly has a post that is moved forward with the insertion of the proper key into an annular groove allowing the cylinder plug to turn.

A pickproof lock has a hollow housing, a lock shaft and a sleeve mounted in the housing, multiple axial pin sets mounted in the lock shaft and the sleeve, and at least one radial pin set mounted in the housing and the lock shaft. When unlocking the pickproof lock, the key is able to push the axial pin sets and the at least one radial pin set to unlocking positions, so as to drive the lock shaft to rotate and to unlock the pickproof lock. The complexity of the pickproof lock is increased. People with bad intentions are unable to unlock the pickproof lock with a lock picking tool, such as a round tube. Accordingly, personal goods or private matters can be safely protected by the pickproof lock.

A lock assembly includes a plug with a keyway, primary pins aligned with the keyway for controlling rotation of the plug, a sidebar for controlling rotation of the plug, secondary pins adjacent the keyway for controlling movement of the sidebar, and at least one supplemental sidebar control element for controlling movement of the sidebar. The lock assembly is operated by simultaneously manipulating the primary pins, the secondary pins, and the supplemental sidebar control element to place each in a respective position and/or orientation to permit rotation of the plug and to permit sufficient movement of the sidebar to permit rotation of the plug and then applying torque to the plug.

A lock (1) is described, comprising: a body (2) suitable to define a housing (3) having a longitudinal development direction (L) along an insertion direction (I) of a key (200), said housing (3) comprising a first portion (4) and a second portion (5) mutually adjacent along the longitudinal development direction (L) of the body (2); a first rotor (37) suitable to be rotationally housed within the first portion (4) of said housing (3) of such body (2) about the longitudinal development direction (L) of the body (2), said first rotor (37) being suitable to define a further housing (38); a second rotor (39) comprising a first portion (55) suitable to be rotationally housed within the second portion (5) of said housing (3) of the body (2) about the longitudinal development direction (L) of such body (2), said second rotor (39) comprising a second portion (56) suitable to be rotationally housed within the further housing (38) defined by the first rotor (37) about the longitudinal development direction (L) of such body (2). The second rotor (39), by the insertion of the key (200), is suitable to translate along the longitudinal development direction (L) of the body (2) with respect to the first rotor (37). The second rotor (39), by a first rotation portion of the key (200), is suitable to rotate about the longitudinal development direction (L) of the body (2) with respect to the first rotor (37), to pass from a disengagement position to an engagement position with said first rotor (37). In the engagement position, said first rotor (37) and said second rotor (39), by a second portion of rotation of the key (200), are suitable to integrally translate along the longitudinal development direction (L) of the body (2) to reach an actuating position of the lock (1).