In one aspect, the invention is directed to a sharpener for sharpening a snow/ice travel member such as a skate blade, a ski or a snowboard, which includes a sharpening surface that is movable lengthwise along an edge face of the item to be sharpened. The sharpening surface may be movable lengthwise
In one aspect, the invention is directed to a sharpener for sharpening a snow/ice travel member such as a skate blade, a ski or a snowboard, which includes a sharpening surface that is movable lengthwise along an edge face of the item to be sharpened. The sharpening surface may be movable lengthwise by means of a motor and a reciprocating mechanism, or may be manually moved by a user.
대표청구항▼
1. A sharpener for use with a skate blade having a first side face and an edge face defining a first corner edge and having a second side face together with the edge face defining a second corner edge, the sharpener comprising: a first corner edge sharpening structure for sharpening the first corner
1. A sharpener for use with a skate blade having a first side face and an edge face defining a first corner edge and having a second side face together with the edge face defining a second corner edge, the sharpener comprising: a first corner edge sharpening structure for sharpening the first corner edge,a second corner edge sharpening structure for sharpening the second corner edge,wherein the first corner edge sharpening structure includes a first edge face sharpening surface and a first side face sharpening surface, and the first edge face sharpening surface is positioned for sharpening the edge face proximate the first corner edge, and the first side face sharpening surface is positioned for sharpening the first side face proximate the first corner edge, andwherein the second corner edge sharpening structure includes a second edge face sharpening surface and a second side face sharpening surface, and the second edge face sharpening surface is positioned for sharpening the edge face proximate the second corner edge, and the second side face sharpening surface is positioned for sharpening the second side face proximate the second corner edge,wherein the first corner edge sharpening structure and the second corner edge sharpening structure are positioned on a sharpening base and wherein the first edge face sharpening surface and the second edge face sharpening surface are surfaces on a separate first tongue and a separate second tongue respectively on the sharpening base,wherein the first side wall and the second side wall are resiliently joined together by a resilient hinge portion at their respective bottom ends to permit the first side wall and the second side wall to resiliently spread apart as necessary to accommodate a range of thicknesses of the skate blade, but biases the first side wall and the second side wall towards a rest position for accommodating narrower skate blades. 2. The sharpener of claim 1 wherein the first edge face sharpening surface and the second edge face sharpening surface are angled downwardly in a laterally outward direction away from each other to maintain a concavity of the edge face of the skate blade. 3. The sharpener of claim 2 wherein the first edge face sharpening surface and the second edge face sharpening surface have laterally outer edges that are laterally outboard of the first side face sharpening surface and the second side face sharpening surface respectively. 4. The sharpener of claim 1 wherein the first edge face sharpening surface, the second edge face sharpening surface, the first side face sharpening surface and the second side face sharpening surface cooperate to provide sharp first corner edges and second corner edge. 5. The sharpener of claim 1 wherein the first side face sharpening surface and the second side face sharpening surface are sloped laterally towards each other. 6. The sharpener of claim 1 further comprising a body, a skate blade orienting structure, and a drive mechanism for driving the movement of the first corner edge sharpening structure and the second corner edge sharpening structure relative to the body, and a slot in the body providing a skate blade orienting structure wherein the lower portions of the first side face sharpening surface and the second side face sharpening surface extend into the slot to engage with the first side face and the second side face of the skate blade. 7. The sharpener of claim 1 wherein the first edge face sharpening surface, the second edge face sharpening surface, the first side face sharpening surface and the second side face sharpening surface are covered with an abrasive material. 8. The sharpener of claim 7 wherein the first edge face sharpening surface, the second edge face sharpening surface, the first side face sharpening surface and the second side face sharpening surface are covered with an abrasive material such as diamond, or Cubic Boron Nitride (CBN). 9. The sharpener of claim 1 wherein the first edge face sharpening surface and the second edge face sharpening surface are surfaces on separate first tongue and second tongue resiliently connected to a first side wall and a second side wall of the sharpening base. 10. The sharpener of claim 1 wherein the first tongue is connected to the second side wall and the second tongue is connected to the first side wall. 11. The sharpener of claim 1 wherein the resilient connections permit the first tongue and the second tongue to flex as necessary to accommodate the skate blade. 12. The sharpener of claim 1 wherein a separate spring member is provided for biasing the first edge face sharpening surface and the second edge face sharpening surface toward a selected position. 13. A sharpener for use with a skate blade having a first side face and an edge face defining a first corner edge and having a second side face together with the edge face defining a second corner edge, the sharpener comprising: a first corner edge sharpening structure for sharpening the first corner edge,a second corner edge sharpening structure for sharpening the second corner edge,wherein the first corner edge sharpening structure includes a first edge face sharpening surface and a first side face sharpening surface, and the first edge face sharpening surface is positioned for sharpening the edge face proximate the first corner edge, and the first side face sharpening surface is positioned for sharpening the first side face proximate the first corner edge, andwherein the second corner edge sharpening structure includes a second edge face sharpening surface and a second side face sharpening surface, and the second edge face sharpening surface is positioned for sharpening the edge face proximate the second corner edge, and the second side face sharpening surface is positioned for sharpening the second side face proximate the second corner edge,wherein the first corner edge sharpening structure and the second corner edge sharpening structure are positioned on a sharpening base and wherein the first edge face sharpening surface and the second edge face sharpening surface are surfaces on separate first tongue and second tongue on the sharpening base, wherein the first edge face sharpening surface and the second edge face sharpening surface are angled downwardly in a laterally outward direction away from each other to maintain a concavity of the edge face of the skate blade, wherein the first edge face sharpening surface and the and second edge face sharpening surface have laterally outer edges that are laterally outboard of the first side face sharpening surface and the second side face sharpening surface respectively, and wherein the first edge face sharpening surface, the second edge face sharpening surface, the first side face sharpening surface and the second side face sharpening surface cooperate to provide sharp first corner edges and second corner edge. 14. The sharpener of claim 13 wherein the first side face sharpening surface and the second side face sharpening surface are sloped laterally towards each other. 15. The sharpener of claim 13 further comprising a body, a skate blade orienting structure, and a drive mechanism for driving the movement of the first corner edge sharpening structure and the second corner edge sharpening structure relative to the body, and a slot in the body providing a skate blade orienting structure wherein the lower portions of the first side face sharpening surface and the second side face sharpening surface extend into the slot to engage with the first side face and the second side face of the skate blade. 16. The sharpener of claim 13 wherein the first edge face sharpening surface, the second edge face sharpening surface, the first side face sharpening surface and the second side face sharpening surface are covered with an abrasive material. 17. The sharpener of claim 13 wherein the first edge face sharpening surface, the second edge face sharpening surface, the first side face sharpening surface and the second side face sharpening surface are covered with an abrasive material such as diamond, or Cubic Boron Nitride (CBN). 18. The sharpener of claim 13 wherein the first edge face sharpening surface and the second edge face sharpening surface are surfaces on separate first tongue and second tongue resiliently connected to a first side wall and a second side wall of the sharpening base. 19. The sharpener of claim 13 wherein the first tongue is connected to the second side wall and the second tongue is connected to the first side wall. 20. The sharpener of claim 13 wherein the first side wall and the second side wall are resiliently joined together by a resilient hinge portion at their respective bottom ends to permit the first side wall and the second side wall to resiliently spread apart as necessary to accommodate a range of thicknesses of the skate blade, but biases the first side wall and the second side wall towards a rest position for accommodating narrower skate blades.
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