Disclosed is a combination lock, comprising a rotatable knob capable of relative rotation, a panel, a bolt, and a dial assembly. The dial assembly comprises a base having a movement chamber, a dial shaft, multiple sets of bushings and dials, a position resetting mechanism, a positioning member, and a protection frame The rotatable knob can be rotated relative to the panel to a first position, second position, third position, or fourth position, so as to achieve locking, automatic password resetting, automatic dial position resetting, and manual password setting. The combination lock uses one-time temporary passwords, thereby achieving superior security performance.

A code changing structure for a key coded lock, including a lock base, a push rod, locking pieces, a knob, a linkage assembly, a position resetting assembly, and corresponding key springs, password keys, button springs and buttons. A press-rotating mechanism operable below a code changing height is provided between the buttons and key slots. When a correct password is entered, the knob rotate to a first angle or a second angle. When the knob rotates to the first angle, the key coded lock is in an unlocked state, the lock pieces move away from the knob and prevent the buttons to reach the code changing height. When the knob rotates to the second angle, the lock pieces move towards the knob and allow the buttons to be pressed down to the code changing height so as to drive the password keys to rotate to change the password.

A lock assembly including a plurality of button assemblies having a plurality of indicator elements. A position of the indicator elements sets a lock combination. A code blocker is configured to cover and prevent access to the plurality of button assemblies when the lock assembly is in a first position, for example in an unlocked position, and to allow access to the plurality of button assemblies when the lock assembly is in a second position, for example in a locked position.

A combination lock has a body formed from a stack of plates each having various openings to form some of the channels or holes such as the locking hole to receive the short leg of the shackle, the long-leg channel, the spindle hole, the dial slots, the ratchet-pin holder slot and the bolt slots. The short leg and the long leg of the shackle each has a cutout to receive a locking bolt. The spindle has a locking surface to engage the locking bolts with the cutouts when the lock is in locked mode. The spindle also has a neck to release the locking bolts from the cutouts when the lock is in opened mode. The lock has a directional plate and a reset button near the lock's bottom end to control the rotation and the downward movement of the spindle in the reset mode.

A locking device that can be mounted into a rotating or swinging door is disclosed. The locking device can have a deadbolt. The locking device can detect the position of the deadbolt and/or whether the door is closed. The locking device can have a camera, microphone and speaker. The locking device can send images detected by the camera and audio detected by the microphones to a remote computer.

A lock includes a housing having a plurality of apertures receiving buttons. A biasing member biases each button towards an un-pressed position. A plurality of spools includes circumferential grooves. Each circumferential groove has a notch that is angularly displaced relative to each of the other notches on that spool. A plurality of legs is in communication with one of the buttons and contacts one of the circumferential grooves. A locking plate includes apertures receiving the spools. An actuator is associated with the locking plate and a latch. Pressing and releasing the buttons causes translation of the spool rotationally orienting a notch to be adjacent to the locking plate. The locking plate only moves into an unlocked position, when driven by the actuator disengaging the latch and unlocking the lock if all of the notches which are adjacent to the locking plate are in a unlocked rotational orientation.

A locking cap having a push button reset and method for operating the locking cap having a push button reset are disclosed. The locking cap with a push button reset system is a deterrent to keep medications in the correct hands.

An automatic messy code character wheel coded lock includes a housing and a lock case capable of rotating with respect to the housing provided on the housing in a penetrating mode. A lock cylinder assembly is provided in one end of the lock case, and a lock piece is connected to the other end of the lock case. A character wheel shaft is provided in the housing. Several bushings are sleeved on the character wheel shaft. Each bushing is sleeved with a character wheel capable of driving the bushing to rotate together or rotate relatively. Several code characters are provided on a side wall of the character wheel. Each character wheel is provided with a pair of character wheel magnets having opposite poles, and the character wheel shaft is provided with one character wheel shaft magnet corresponding to each pair of character wheel magnets.

A combination lock is provided, the lock having a latch movably mounted to a housing of the lock for movement between a locked position and an unlocked position; and a bolt movably mounted to the housing of the lock for movement between a first position and a second position, wherein the combination lock is a key-controlled combination changing permutation lock wherein a button disposed away from a rear exterior surface of the housing in a first direction rearwardly away from the rear exterior surface is depressed in order to change the combination of the combination lock and the housing has a button protection feature extending rearwardly away from the rear exterior surface of the housing in the first direction proximate to the button and the button protection feature extends farther away from the rear exterior surface of the housing in the first direction than the button.

A locking cap having a push button reset and method for operating the locking cap having a push button reset are disclosed. The locking cap with a push button reset system is a deterrent to keep medications in the correct hands.