Combination lock

A combination lock comprising:

• a lock body;
• a shackle having a long leg and a short leg, the short leg being secured within the lock body when the lock is in a locked condition and separable from the lock body when the lock is in an unlocked condition and the shackle is extended from the lock body in an axial direction;
• a blocker disposed within the lock body, the blocker being slideable along the axial direction between a shackle securing position, in which the blocker causes first and second locking members to engage with corresponding first and second notches in the shackle, and a shackle releasing position, in which the blocker allows the first and second locking members to disengage from the shackle for separation of the short leg from the lock body;
• a plurality of dials rotatable about a post disposed within the lock body, each of the plurality of dials including a hub having an outer peripheral recess and a user rotatable wheel, the hub being separable from the wheel to change a rotational orientation of the wheel with respect to the hub, wherein when each of the plurality of dials is rotated to an unlocking orientation, each of the recesses aligns with a corresponding finger-like extension of the blocker, allowing the blocker to slide along the axial direction from the shackle securing position to the shackle releasing position;
• and
• a code changing member assembled within and inseparable from the lock body, wherein rotation of the code changing member axially pushes the post to separate the hubs from the corresponding wheels, to permit adjustment of the rotational orientations of the wheels with respect to the corresponding hubs.

A combination lock comprising:

• a lock body;
• a shackle having a long leg and a short leg, the short leg being secured within the lock body when the lock is in a locked condition and separable from the lock body when the lock is in an unlocked condition and the shackle is extended from the lock body in an axial direction;
• a blocker disposed within the lock body, the blocker being slideable along the axial direction between a shackle securing position, in which the blocker causes at least one locking member to engage with the shackle, and a shackle releasing position, in which a narrow end portion of the blocker aligns with the at least one locking member to allow the at least one locking member to disengage from the shackle for separation of the short leg from the lock body;
• and
• a plurality of dials rotatable about a post disposed within the lock body, each of the plurality of dials including an outer peripheral recess, wherein when each of the plurality of dials is rotated to an unlocking orientation, each of the recesses aligns with a corresponding finger-like extension of the blocker, allowing the blocker to slide along the axial direction from the shackle securing position to the shackle releasing position;
• wherein the blocker is spring-biased toward the shackle securing position to retain the blocker in the shackle securing position when each of the plurality of dials is rotated to the unlocking orientation;
• and
• wherein when the shackle is fully extended from the lock body in the axial direction, the at least one locking member is secured against the narrow end portion of the blocker by the long shackle leg, thereby retaining the blocker in the shackle releasing position.