초록 ▼

The present invention is directed to an apparatus for sharpening the blade of a skate which provides more precision that prior art sharpeners. The apparatus comprises a circular grindstone which can pivot from a work position to a rest or sharpening position. When in the rest position, the grindston

The present invention is directed to an apparatus for sharpening the blade of a skate which provides more precision that prior art sharpeners. The apparatus comprises a circular grindstone which can pivot from a work position to a rest or sharpening position. When in the rest position, the grindstone may be sharpened by a diamond, which diamond moves in circular motion when sharpening. The radius of curvature of the circular motion is selectable. The degree of concavity imparted to the blade is defined by curvature of the sharpening diamond. The blade is clamped in a slidable carriage while the grindstone, which is stationary with respect to the sliding motion of the carriage, follows the contour of the blade according to selected template. The blade clamp comprises two movable surfaces which properly center the blade with respect to the grindstone regardless of the blade\s thickness.

대표청구항 ▼

An apparatus for sharpening a blade of a skate, comprising: a frame; a circular grindstone having a working position in which said grindstone can contact said blade, and a rest position in which said grindstone can be sharpened; an arm for supporting said grindstone, said arm having a first extremit

An apparatus for sharpening a blade of a skate, comprising: a frame; a circular grindstone having a working position in which said grindstone can contact said blade, and a rest position in which said grindstone can be sharpened; an arm for supporting said grindstone, said arm having a first extremity provided with an axle for supporting said grindstone, and a second opposed extremity, said arm being capable of pivoting around an axle firmly attached to said frame so that said grindstone can be pivoted from said working position to said rest position and vice versa; a diamond assembly including: a diamond for sharpening said grindstone when said grindstone is in said rest position by pivoting said diamond horizontally from a central position to alternatively left or right with respect to a pivoting axis so that said diamond defines a circular motion which has a radius of curvature determined by a distance between said diamond and said pivoting axis; and a member having a first extremity onto which said diamond is fixed, and a second extremity provided with a surface facing the ground; a body for supporting said diamond assembly by said second extremity of said member, including: a screw separated along its length to form first and second complementary elongated parts; a pivoting pin transverse to a longitudinal axis of said screw, said pivoting pin connecting said first part to said second part so that said second part can be pivoted with respect to said first part, around said pivoting pin, said body comprising upper and lower members forming a cavity provided with threads contacting upper and lower portions of said screw so that said screw can be screwed along said cavity by rotation thereof, said body including a bearing surface for vertically supporting said surface of said second extremity of said member, when said second part of said screw is in a lower position, said second part can be pivoted with said lower member of said body, horizontally from a central position to alternatively left or right around said pivoting pin; supporting means for supporting said body with respect to said frame of said apparatus; and connecting means for rendering said second extremity of said member of said diamond assembly solid with an extremity of said second complementary elongated part only when said second part is pivoted horizontally away from its central position so that said pivoting pin forms said pivoting axis of said diamond, whereby said radius of curvature can be modified by displacing said screw along said cavity.