Portable lock apparatus

A lock apparatus, comprising:

• a shackle comprising an engagement portion;
• and
• a lock head operable to selectively engage the engagement portion to thereby retain the lock apparatus in a closed condition, the lock head comprising:
• a housing;
• a slider mounted for sliding movement relative to the housing between a first position and a second position, wherein the slider is operable to be urged from the first position toward the second position by a first force;
• and
• a detent mechanism configured to exert a first resistance force on the slider to selectively resist movement of the slider from the first position toward the second position, thereby preventing the first force from driving the slider from the first position toward the second position when the first force is below the first resistance force, and permitting the first force to drive the slider from the first position toward the second position when the first force is above the first resistance force;
• wherein one of the first position or the second position is a closed position in which the slider prevents removal of the engagement portion from the lock head;
• wherein the other of the first position or the second position is an open position in which the slider permits removal of the engagement portion from the lock head;
• and
• wherein the slider is at least selectively operable to move from the closed position to the open position in response to an axial pulling force urging the slider away from the housing.

A lock apparatus, comprising:

• a shackle comprising an engagement portion;
• and
• a lock head operable to selectively engage the engagement portion to thereby retain the lock apparatus in a closed condition, the lock head comprising:
• a housing;
• a combination lock mechanism mounted to the housing and configured to facilitate entry of an input code, wherein the combination lock mechanism is configured to move from an unlocking state to a locking state in response to the input code matching an authorized code;
• a reset mechanism operable to place the combination lock mechanism in a reset mode in which the authorized code is changeable;
• and
• a slider mounted for movement relative to the housing between an open position in which the reset mechanism is accessible via an opening in the lock head and the engagement portion is removable from the lock head, and a closed position in which the slider prevents access to the reset mechanism and the engagement portion is not removable from the lock head;
• and
• wherein the combination lock mechanism is configured to retain the slider in the closed position when the combination lock mechanism is in the locking state and to permit movement of the slider from the closed position to the open position when the combination lock mechanism is in the unlocking state.