Patent ID: 8585345

Claim:
An attachment coupler comprising: a frame including: (i) an upper portion adapted for connection to an associated excavator arm and an associated excavator control link; and, (ii) a lower portion including a front hook and rear hook respectively adapted for engaging first and second associated attachment pins of an associated attachment; a rear hook lock movable between an unlocked position and a locked position, wherein said rear hook lock obstructs said rear hook sufficiently to capture the second associated attachment pin in the rear hook when in said locked position and wherein said rear hook lock is withdrawn relative to said rear hook sufficiently to allow movement of the second associated attachment pin into and out of the rear hook when in said unlocked position; an actuator operably connected to the rear hook lock for moving the rear hook lock to its unlocked position and its locked position; a first gravity lock that pivots relative to the frame between an engaged position and a disengaged position, said first gravity lock blocking movement of the rear hook lock from its locked position to its unlocked position when said first gravity lock is located in its engaged position; a first supplemental lock arm movable relative to the frame between an engaged position and a disengaged position, wherein said first supplemental lock arm urges said first gravity lock toward its engaged position when said first supplemental lock arm is in its engaged position, said first supplemental lock arm comprising a lock face and a projecting tail, said projecting tail adapted to contact the associated excavator arm when said coupler frame is located in a select angular position relative to the associated excavator arm to move the first supplemental lock arm from its engaged position to its disengaged position; a first lock arm spring that biases said first supplemental lock arm toward its engaged position; a secondary lock located adjacent said front hook, said secondary lock comprising a latch that moves between an extended position and a retracted position, said latch including at least a first latch projection that projects into and obstructs said front hook sufficiently to capture the first associated attachment pin in said front hook when said latch is in its extended position and that is retracted relative to said front hook sufficiently to allow movement of the first associated attachment pin into and out of said front hook when said latch is in its retracted position; wherein said lock face of said first supplemental lock arm blocks movement of said latch from its extended position to its retracted position when said first supplemental lock arm is in its engaged position; and, wherein said latch is biased to its extended position and is movable from its extended position to its retracted position by contact between the latch and the first associated attachment pin when said first supplemental lock arm is in its disengaged position.