Patent ID: 8381407

Claim:
A knife with a replaceable blade comprising: (a) a blade having a bottom cutting edge and an opposing back edge, a proximal base edge and an a blade opening spaced away from the back edge and spaced distally of the proximal base edge; (b) a blade holder secured to a handle, the blade holder having a longitudinally extending shoulder defined between an upper portion and a recessed lower portion and a raised boss extending outwardly from a proximal portion of the lower portion, the blade being positioned on the blade holder with the blade opening receiving the raised boss therein and the blade back edge lying against the shoulder; and (c) a blade lock pivotally mounted to the knife and movable between open and closed positions, the blade lock having spaced apart front and rear portions and a back edge portion integral with the front and rear portions, when in the closed position, at least a portion of the blade lock defines a structure overlying the front and rear sides of the blade holder as well as at least a portion of the blade back edge that lies against the shoulder, whereby, the blade is secured in the blade holder when the blade lock is in the closed position and the blade is removable from the blade holder when the blade lock is in the open position; and, (d) a locking feature for releasably securing the blade lock to the blade holder when the blade lock is in the closed position.