Patent ID: 7562718

Claim:
A locking assembly for locking a plow onto a push beam on a vehicle, said push beam having two spaced-apart receiver plates extending therefrom, said plates each having an aperture therethrough, said locking assembly comprised of: a mounting frame that is attachable to the back side of a plow assembly, said mounting frame having spaced-apart mounting plates, each of said mounting plates having an aperture therethrough, each of said mounting plates being designed to be positionable adjacent one of said receiver plates with said aperture in said receiver plate in vertical and horizontal alignment with said aperture in said mounting plate; and a locking mechanism for locking said mounting frame to said push beam, said locking assembly having a pair of axially-aligned, spaced-apart locking pins biased outwardly away from each other along a first axis, each of said locking pins having an inner and an outer end; a linkage connected to the inner ends of said locking pins, said linkage being movable between a first position and a second position and being operable to simultaneously move said locking pins along an axis, wherein said pins are in a retracted position along said axis when said linkage is in said first position, and are in an extended position along said axis when said linkage is in said second position, each of said locking pins extending through said aperture in one of said receiving plates and through said aperture in one of said mounting plates when said aperture in said receiving plate and said aperture in said mounting plate are horizontally and vertically aligned and when said linkage is in said second position, and each of said locking pins being removed from said aperture in said receiving plate and from said aperture in said mounting plate when said linkage is in said first position, said linkage being in an over-center position when said linkage is in said first position; and an actuator arm operable to move said linkage between said first position and said second position, said actuator arm having a first end connected to said linkage and a free end that extends beyond a side of said mounting frame.