Patent ID: 8678702

Claim:
A gravel grading attachment assembly comprising: an attachment member configured for coupling to a vehicle; a main blade coupled to said attachment member, said main blade having a straight bottom edge wherein said main blade is configured to level an upper surface of gravel positioned in a frame when said main blade is moved over the gravel; a first roller assembly coupled to and extending from said main blade, said first roller assembly comprising a first roller defining a bottom edge of said first roller assembly, said first roller rotating in a plane substantially transverse to said straight bottom edge of said main blade; a second roller assembly coupled to and extending from said main blade, said second roller assembly comprising a second roller defining a bottom edge of said second roller assembly, said second roller rotating in a plane substantially transverse to said straight bottom edge of said main blade wherein said first roller and said second roller are configured to rest upon spaced guide surfaces such that said straight bottom edge of said main blade is maintained at a consistent spacing relative to the guide surfaces as said first and second rollers are moved on the guide surfaces; and wherein said first roller assembly further comprises a fixed portion coupled to and extending away from said main blade, a roller adjustment plate coupled to said fixed portion, a pivotable portion pivotally coupled to said fixed portion, said first roller being coupled to said pivotable portion, and a roller adjustment arm coupled to and extending from said pivotable portion, said roller adjustment arm being coupled to said adjustment plate at a selectable position wherein said pivotable portion supports said first roller in a selected position relative to said bottom edge of said main blade when said roller adjustment arm is coupled to said roller adjustment plate.