초록

A knife is supported on a movable saddle support member and the knife blade maintained at a set predetermined angle with respect to a sharpening stone during the sharpening process.

대표청구항 ▼

A device for shaping and sharpening the blade of a utility knife or the like, comprising: (a) a base member having a flat top surface and a second flat surface disposed parallel and below the top surface, (b) a sharpening stone firmly mounted on the base member and having a flat sharpening surface p

A device for shaping and sharpening the blade of a utility knife or the like, comprising: (a) a base member having a flat top surface and a second flat surface disposed parallel and below the top surface, (b) a sharpening stone firmly mounted on the base member and having a flat sharpening surface parallel to the flat top surface of the base member, (c) the base member having a large circular opening in its flat top surface aligned with and spaced a predetermined distance fron the sharpening stone, (d) a slider unit consisting of a block positioned in sliding engagement with the base member including a slider base disposed below the top surface and in general alignment with the circular opening so as to slide parallel with the top surface, the slider base having a planar surface of larger area than the circular opening and in close sliding engagement with the second flat surface such that the slider unit has firm, fixed planar movement, and including base engaging means for holding the slider unit in sliding engagement, (e) a slider head disposed above the top plate which is supported on the slider base and connected thereto by a cylindrical support post on the slider unit being of substantially smaller diameter than the circular opening in the top surface and extending through the circular opening to freely permit two degrees of substantial planar translational movement of the slider unit with respect to the sharpening stone, and (f) a saddle unit being connected through a pivotal connection to the slider base head which permits movement along an axis parallel to the plane of translation of the slider unit and also having a knife receiving upper surface for supporting the knife blade transversely with respect to the sharpening stone flat surface and bringing it into contact therewith at an acute fixed angle, such that a flush wiping contact of the edge of the knife blade is made with the upper surface of the sharpening stone.