Abstract: A first coupler component (12) is pivotally attached to a boom (14) for rotation about a first pivot axis (20) and is also pivotally attached to an actuation linkage (24) for pivotal movement about a second axis (22). A trunnion (26) surrounds and is concentric with the first pivot axis (20). A second coupler component (16) includes a notch (32) of a size and shape to engage the trunnion (26). The second coupler component (16) also includes an end portion (52) that is located above and is spaced from an end portion (54) on the first coupler component (12). A lock member (50) is received within a space between the end portions (52, 54). The lock member (50) is forceable into the space for spreading the end portions (52, 54) apart and forcing divergent side edges (34, 36) of the notch (32) into tight engagement with the trunnion (22). The second coupler component (16) is connected to a bucket (18) or other implement.

Abstract: A two-part implement combination for attachment to an excavator arm in which both implement parts share a common axis of rotation relative to one another and relative to the excavator arm and are independently movable. This allows a bucket and thumb combination to be quickly coupled or decoupled as a unit from an excavator arm without sacrificing independence of movement and a common rotational arc.