Patent ID: 8662817

Claim:
An attachment coupler comprising: a frame including an upper portion and a lower portion, said upper portion adapted to be secured to an associated arm and said lower portion comprising a first hook adapted to receive a first associated attachment pin and comprising a second hook adapted to receive a second associated attachment pin; a first safety lock movably connected to the frame and movable relative to the first hook between an engaged position where the first safety lock obstructs the first hook and a disengaged position where the first safety lock is retracted relative to the first hook; an actuator adapted to move the first safety lock selectively between its engaged and disengaged positions; a first safety cam movably connected to the frame and comprising a first cam profile that: (i) blocks movement of the first safety lock from its engaged position to its disengaged position when the frame and first safety cam are arranged in a first angular orientation relative to each other; and, (ii) allows movement of the first safety lock from its engaged position to its disengaged position when the frame and first safety lock are arranged in a second angular orientation relative to each other; said first safety cam comprising a recess adapted to receive a tip of the associated arm for fixing a position of the first safety cam relative to the associated arm.