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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 7220161 | Automatic sharpening system for ice-skates A method is for using a skate-grinding device. The method provides an automatic sharpening system (10) that has grip members (14, 16) and a grinding wheel (28). A blade (18) of a skate (20) is inserted into a groove (19). Th... | 05/22/2007 |
| 7040964 | Polishing media stabilizer A polishing apparatus that employs a polishing media retention arrangement to prevent slippage or wrinkles in the polishing media during polishing. The polishing media is drawn against a support surface by a vacuum applied between the polishing media and the support... | 05/09/2006 |
| 6447367 | Processing jig A processing jig comprises: a main body to be fixed to a processing apparatus; a retainer that is long in one direction for retaining a bar as an object long in one direction; four couplers for coupling the retainer to the main body; three load applicatio... | 09/10/2002 |
| 6422934 | Skate sharpener A skate sharpening apparatus includes a skate blade holding device, the skate blade sharpening device having a horizontally mounted sharpening wheel which is rotatably driven, and wherein the skate holding device has first and second jaws for contacting o... | 07/23/2002 |
| 5897428 | Device for contouring and sharpening ice skate blades A device and method for contouring and sharpening an ice skate blade. The device uses a fixture for holding the ice skate. The fixture employs retractable depending cam rollers to be guided by cam templates recessed into the top surface of the table of th... | 04/27/1999 |
| 5704829 | Hand-held skate blade edge deburring tool A compact, hand-held tool for safely deburring the edges of a skate blade. The tool utilizes a pair of resiliently biased deburring surfaces which are movable between an open position and a closed position. The deburring surfaces are resiliently biased in... | 01/06/1998 |
| 5601473 | Skate sharpening apparatus and method An apparatus and method for sharpening skate blades operate by measuring the length of a skate blade, determining a predetermined profile corresponding to a desired radius of curvature for the blade, and coordinating the motion of a grinding wheel and the... | 02/11/1997 |
| 5547416 | Skate sharpening gauge A device for accurately locating the blade of a skate mounted in a skate holder so that it may be ground correctly. The device includes a base block mounted to a base of a skate sharpener, a lever pivotally mounted to the block, the block having a blade c... | 08/20/1996 |
| 5009039 | Skate sharpening device An automatic skate sharpener comprises a skate sharpening mechanism inside a cover. A skate loading device is pivotally mounted in an opening in the protective cover, so that it can be pivoted between a loading position, in which the skate is on the outsi... | 04/23/1991 |
| 4939873 | Ski grinding device A ski grinding device and method comprising a holder having an adjustably sizable frame and a plurality of biasing legs disposed to engage the ski and maintain it in a flattened position. By holding the ski flat, the running surface can be ground more con... | 07/10/1990 |
| 4817339 | Process and device for grinding elongated objects A process and a device for grinding, especially edge grinding, of elongated objects (15), the device consisting of a basic frame (1) which supports a carriage (13) horizontally displaceable by means of a first pulse motor (23) and a scanning member or a g... | 04/04/1989 |
| 4558541 | Ice skate sharpening method A machine for sharpening the blade of an ice skate has a vertically mounted, thin grinding wheel with a convex transverse cross-section corresponding to the concave transverse cross-section desired for the blade edge. Clamping plates on a cradle hold the ... | 12/17/1985 |
| 4403455 | Belt grinder for sharpening ice skate blades and the like A belt grinding apparatus is provided for obtaining maximum wear from an abrasive belt. The apparatus is particularly useful in sharpening skate blades and the like and involves a motor-driven belt arrangement in which the belt is passed over an idler pul... | 09/13/1983 |
| 4271635 | Ice skate-sharpening apparatus Ice skate-sharpening apparatus including a housing assembly carrying a vertically extending drive shaft on which a grinding wheel is mounted. Adjustable mounting means supports the housing assembly on a work table for vertical movement with respect to the... | 06/09/1981 |
| 4235050 | Skate sharpening apparatus Grinding apparatus is disclosed with the preferred embodiment being an automatic ice skate sharpening machine. The workpiece is secured to the frame, and a grinding wheel, mounted on a longitudinally moveable carriage, is biased against the workpiece for ... | 11/25/1980 |
| 4172343 | Ice skate sharpener The invention comprises an improved ice skate grinding, sharpening and contouring machine. The machine includes novel means to accurately center an ice skate between the heel and sole struts in a movable holding fixture and means to select the best contou... | 10/30/1979 |
| 4109419 | Ice skate sharpening devices A lightweight transversely pivoting and longitudinally sliding skate carriage exhibiting exceptionally low friction, introduces a high degree of sensitivity into the process of skate sharpening, facilitating very light grinding cuts and low uniform traver... | 08/29/1978 |
| 4094101 | Ice-skate sharpener An ice-skate sharpener comprising a stationary electric motor grinder including a diamond bit carried by an arm pivoted on a support adjacent the grinding wheel and serving to dress the peripheral face of the grinding wheel to the desired transverse curva... | 06/13/1978 |
| 4085547 | Skate sharpener A skate sharpener having a grinding wheel supported over the skate by a combined parallelogram and Watts linkage which guides the grinding element substantially parallel with the sharpened surface of the skate blade while keeping the grinding pressure con... | 04/25/1978 |
| 4078337 | Apparatus for sharpening ice skate blades and the like An apparatus using an abrasive belt is employed for sharpening ice skates quickly and accurately to any one of a variety of different hollow ground curvatures. The abrasive belt is mounted on pulleys and driven at a high speed across a changeable head whi... | 03/14/1978 |
| 4069620 | Ice skate sharpener The invention comprises an improved ice skate grinding, sharpening and contouring machine. The machine includes novel means to accurately center an ice skate between the heel and sole struts in a movable holding fixture and means to select the best contou... | 01/24/1978 |
| 4055026 | Clamp for holding ice skate while grinding blade A clamp for holding an ice skate while grinding the edge of the ice skate blade slides on a surface parallel to the plane of a grinding wheel for grinding the edge of the blade, the clamp holding the skate blade parallel to the plane of the grinding wheel... | 10/25/1977 |
| 3988865 | Clamp and jig for use therewith An improved clamp is disclosed in which a carrier plate is mounted slidably within a housing and is moved in one embodiment in a linear direction by means of an actuator. First and second arms are mounted in the housing and in angularly oriented guide slo... | 11/02/1976 |
| 3988124 | Skate sharpening machine An improved contouring tool, advantageously used as a skate sharpening machine, comprising means to vary the contour of the skating blade with respect to its longitudinal arc and also with respect to the centering of the arc. The sharpener of the inventio... | 10/26/1976 |
