Abstract: The present invention concerns a bucket, an excavator including the bucket and method of construction of the bucket. In one form, the bucket includes an attachment portion for attachment of the bucket to the machine; and a containment portion mounted to the attachment portion, said containment portion defined by a base wall, an opposed top wall, a pair of opposed sidewalls and a rear wall, each of the base wall, the top wall and the opposed sidewalls having an outer edge and extending from the rear wall to the outer edge to define an opening to the containment portion. The bucket further includes a reinforcing formation extending across an outer surface of the top wall and at least an adjacent portion of each sidewall of the containment portion, said reinforcing formation having an arcuate shape that transitions into, and at least partially defines, a corner between the top wall and each sidewall to reinforce a join between the top wall and the sidewall and enhance rigidity of the bucket.

Abstract: The present invention concerns a bucket, an excavator including the bucket and method of construction of the bucket. In one form, the bucket includes an attachment portion for attachment of the bucket to the machine; and a containment portion mounted to the attachment portion, said containment portion defined by a base wall, an opposed top wall, a pair of opposed sidewalls and a rear wall, each of the base wall, the top wall and the opposed sidewalls having an outer edge and extending from the rear wall to the outer edge to define an opening to the containment portion. The bucket further includes a reinforcing formation extending across an outer surface of the top wall and at least an adjacent portion of each sidewall of the containment portion, said reinforcing formation having an arcuate shape that transitions into, and at least partially defines, a corner between the top wall and each sidewall to reinforce a join between the top wall and the sidewall and enhance rigidity of the bucket.

Abstract: A dipper assembly and parts thereof for use with a mining shovel includes: a dipper body having a back wall and an open dipper bottom; a dipper door pivotally coupled to the back wall of the dipper body and moveable between open and closed positions relative to the open dipper bottom; and a latch assembly for releasably securing the door in the closed position. The latch assembly includes a latch keeper and a latch member for engaging the latch keeper. The latch keeper is associated with the dipper body proximate the open dipper bottom and the latch member is coupled to the dipper door. The latch member includes at least one roller to assist the latch member in engaging and disengaging with the latch keeper and to reduce wear on the latch member.