Clevis sensing lock

A latch mechanism comprising,

• a hook-handle assembly including a hook member, a handle, and a linkage arrangement coupled between the hook member and handle, the handle adapted to control motion of the hook member when unlocking and locking the latch mechanism;
• a clevis having a hook-end receiver and a coupler portion spaced apart from the hook-end receiver to at least partially define an opening therebetween, the hook-end receiver configured to engage with a hook end of the hook member as the handle moves from an open position toward a closed position;
• a clevis-sensing lock carried on the handle, the clevis-sensing lock including a block coupled to the handle, a lock member received in the block, a tumbler arrangement coupled between the lock member and the block and configured to control movement of the lock member relative to the block, and an interference member coupled to the lock member, the interference member configured to pass through the opening of the clevis in an unlocked position and engage an underside of the clevis to block movement of the handle relative to the clevis in a locked position, the lock member configured to control movement of the interference member;
• and
• a device having a head, a shaft coupled to the head, and a protrusion extending outward from the shaft, the shaft configured to be received in the lock member to engage with the tumbler arrangement to allow movement of the lock member, the protrusion configured to engage with the handle to trap the shaft within the lock member when the lock member is in the unlocked position, and the head configured to extend away from the handle to provide an indication of an unlocked state of the clevis-sensing lock;
• wherein the clevis is configured to receive at least the interference member carried on the clevis-sensing lock and to allow movement of the lock member to the locked position when the interference member is received through the clevis.