Patent ID: 7743536

Claim:
A materials moving blade ( 1 ) comprising: a main blade ( 3 ) having; a materials engaging panel bounded by a first end, a second end, a top edge ( 6 ) and a lower edge ( 8 ) having a hinge axis; a plurality of spring biased trip blades ( 9 ) supported by the hinge axis along the lower edge ( 8 ) of the materials engaging panel, each trip blade ( 9 ) supporting a cutting blade; a rear mounted enclosure comprising an array of holes for receiving a connection to a separate materials moving blade support structure and the rear mounted enclosure is directly connected to the main blade and in conjunction therewith defines a substantially enclosed space in which a plurality of springs are housed for biasing the plurality of trip blades; the rear mounted enclosure comprises a top plate and a bottom plate connected along an entire front edge of each of the top and bottom plates to the main blade, a rear panel is spaced from the main blade and supported along an entire back edge of each of the top and bottom plates, a pair of opposing side plates are connected along an entire side edge of each of the top and bottom plates and also connected along an entire respective side edges of the rear panel to define the enclosed space and partially enclose the plurality of springs; a plurality of upper passageways are provided in the top plate of the rear mounted enclosure for permitting an upper portion of each of the plurality of springs to extend therethrough and each of the plurality of passageways is covered by a top cover attached to the top plate of the rear mounted enclosure to entirely enclose the upper portion of each of the plurality of springs; and wherein a plurality of lower passageways are formed in the bottom plate to permit an operator access to an inner side of the rear panel to facilitate the connection of the rear panel to a support structure via the away of holes in the rear mounted enclosure.