Hook lock with dual locking function

A lock comprising:

• a body having a first body portion and a second body portion;
• a hook fixedly disposed on an end of the first body portion,
• a locking finger pivotally coupled to the hook to prevent opening of the lock,
• a latch movable in a latch movement direction between a first latch position to prevent the locking finger from decoupling from the hook and a second latch position to allow the locking finger to pivotally decouple from the hook to open the lock;
• a latch-controlling mechanism operable in a control position to prevent movement of the latch, and in a release position to cause the latch to move from the first latch position to the second latch position;
• a spindle movable between a first spindle position to keep the latch-controlling mechanism in the control position and a second spindle position to allow the latch-controlling mechanism to operate in the release position, the spindle having protrusions;
• a combination mechanism located in the second body portion, the combination mechanism having a plurality of dials arranged from top to bottom relative to the body, the dials configured to control rotational movement of a plurality of clutches, the plurality of clutches configured to control movement of the spindle between the first spindle position when the dials are not in a lock open code and the second spindle position when the dials are in a lock open code, and a key overriding-mechanism to allow the latch-controlling mechanism to operate in the release position for causing the latch to move from the first latch position to the second latch position while the spindle is located in the first spindle position,
• wherein the locking finger comprises a cut-out, and the latch comprises a tip arranged to engage with the cut-out of the locking finger when the latch is located in the first latch position for preventing the opening of the lock, and when the latch is located in the second latch position, the tip is caused to disengage from the cut-out of the locking finger,
• wherein the latch further comprises a contact member positioned in relationship to the tip, and the key overriding-mechanism comprises a key-operated cylinder,
• wherein the latch-controlling mechanism comprises an extended edge fixedly attached to the key-operated cylinder, the extended edge having an edge end positioned in relationship to the contact member of the latch, and
• wherein when the key-operated cylinder is turned by a key, the edge end of the extended edge is arranged to cause the contact member to move in the latch movement direction for disengaging the tip of the latch from the cut-out of the locking finger,
• wherein the latch further comprises a contact member positioned in relationship to the tip, and the key overriding-mechanism comprises a key-operated cylinder,
• wherein the latch-controlling mechanism comprises an extended edge fixedly attached to the key-operated cylinder, the extended edge having an edge end positioned in relationship to the contact member of the latch, and
• wherein when the key-operated cylinder is turned by a key, the edge end of the extended edge is arranged to cause the contact member to move in the latch movement direction for disengaging the tip of the latch from the cut-out of the locking finger,
• wherein the latch-controlling mechanism further comprises a button positioned in relationship to the combination mechanism, the button coupled to the key-operated cylinder for movement together,
• wherein the key-operated cylinder is placed inside a rotational-control-slot so that a wafer is inserted in the key-operated cylinder so that a spring of the wafer pushes outwards and contacts a wafer slot to prevent the key-operated cylinder from rotational movement,
• wherein when the spindle is located in the second spindle position, the button can be pushed to move the extended edge in an edge movement direction,
• wherein the edge end is arranged to engage with the contact member of the latch so as to disengage the tip of the latch from the cut-out of the locking finger, and when the spindle is located in the first spindle position, the button is prevented from moving the extended edge in the edge movement direction,
• wherein the lock has a reset-button-with-latch so as to prevent the spindle from moving downward if the reset-button-with-latch is not fully aligned with the protrusions of the spindle,
• wherein each of the plurality of clutches has a front and a back and each has faulty gates located in the front and back of said clutches,
• wherein the faulty gates are configured so that when the dials are not in the lock open code and the button is pushed so that it contacts the spindle, the protrusions of the spindle contact the faulty gates located in the front of the clutches to thereby make a clicking sound to increase the difficulty of discovering the first spindle position, and
• wherein the faulty gates located in the back of the clutches are configured so that when the reset-button-with-latch is pushed inward, then the clutches are pushed to contact the protrusions of the spindle, so that the faulty gates in the back of the clutches also make a clicking sound to increase the difficulty of discovering the first spindle position.