Patent ID: 8578635

Claim:
In combination: an off-road vehicle having forward and rearward ends; a push tube assembly having forward and rearward ends; said rearward end of said push tube assembly being secured to said off-road vehicle so that said forward end of said push tube assembly is positioned at said forward end of said vehicle; a plow blade having a forward side, a rearward side, an upper end and a lower end; a mounting bracket secured to said forward end of said push tube assembly; a receiver tube, having an open forward end, secured to said mounting bracket which extends forwardly therefrom; a hinge plate having forward and rearward ends and upper and lowers sides; said forward end of said hinge plate being pivotally secured, about a horizontal axis, to said rearward side of said plow blade; said rearward end of said hinge plate having a plurality of horizontally spaced-apart notches formed therein; an elongated lever bracket having forward and rearward ends; said lever bracket being movably positioned above said upper side of said hinge plate so that said rearward end of said lever bracket is positioned rearwardly of said rearward end of said hinge plate; a pivot pin pivotally securing said forward end of said lever bracket to said hinge plate about a vertical axis; a rearwardly extending first tube having a rearward end and a forward end; said first tube being positioned below said lower side of said hinge plate directly below said lever bracket so as to be parallel to said lever bracket with said rearward end of said first tube being positioned rearwardly of said rearward end of said hinge plate; said pivot pin also pivotally securing said forward end of said first tube to said hinge plate; said rearward end of said lever bracket being secured to said first tube rearwardly of said rearward end of said hinge plate; a locking lever pivotally secured to said lever bracket which is selectively pivotally movable between locked and unlocked positions; said locking lever when in said locked positioned engaging one of said notches in said rearward end of said hinge plate to lock said plow blade in a selected angular plowing position; said locking lever, when in said unlocked position, permitting said plow blade to be angularly moved to a selected angular plowing position; and a second tube, having rearward and forward ends; said plow blade being selectively attached to said push tube assembly of said vehicle by positioning said forward end of said second tube into said rearward end of said first tube and securing said second tube to said first tube and positioning said rearward end of said second tube into said open forward end of said receiver tube and securing said second tube to said receiver tube.