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| Number | Title | Issue Date |
| 8152600 | Sharpener for rotary cutters Apparatus, systems and methods in accordance with the present invention are related to sharpening blades for rotary cutters. In one illustrative embodiment of a system in accordance with the present invention, an elongated sharpening stone is held at a desired angle... | 04/10/2012 |
| 8092279 | Sharpening system for scissors with complex curved blades A device and method of sharpening hair cutting scissor blades passes a blade over the perimeter portion of a flexible sharpening pad to flex the perimeter portion out of the plane of the pad. The blade is held in an angled orientation over the pad and is moved horiz... | 01/10/2012 |
| 8033894 | Razor blade sharpener and method of sharpening A device for sharpening razor blades, comprising, a housing having an upper casing and a lower casing defining an interior space, the upper casing having an opening, and a lid to cover the opening, a reciprocating carriage disposed in the lower case below the openin... | 10/11/2011 |
| 7993183 | Method of sharpening a wood working knife A method for sharpening a wood working knife having opposed cutting edges, wherein the knife body is held by clamping features on a first surface of the knife and the opposed edges are simultaneously sharpened. ... | 08/09/2011 |
| 7959494 | Sharpening cutting blades having a progressively changing cutting angle A blade, such as the blade of a precision shear, having a cutting angle which changes progressively along the length of the blade through a predetermined angular measure is sharpened by coupling the blade with an articulated arm assembly through a drive mechanism wh... | 06/14/2011 |
| 7918715 | Device and method for sharpening blades A method and apparatus for sharpening clockwise rotating standard blades, counter-clockwise rotating standard blades and mulching style blades of either clockwise or counter-clockwise rotation is provided. The present invention comprises a base with a blade fixture ... | 04/05/2011 |
| 7874896 | Sharpening guide assembly A sharpening guide assembly to be removably attached to a sharpening stone to provide for smooth, controlled and accurate motion when sharpening a blade is provided. The assembly includes a body portion forming a platform adapted to receive the sharpening tool. A ma... | 01/25/2011 |
| 7857681 | Automatic rotation knife sharpener The present invention is directed to an automatic rotation knife sharpener where the crossed sharpening rods are automatically rotated each time a knife is passed down and through the sharpener. The rotation is derived through the means of a spring steel actuator me... | 12/28/2010 |
| 7740522 | Knife sharpener A motorized knife sharpener includes means of for sharpening heavy, medium, and fine blades at angles appropriate to the cutting edges of such blades. ... | 06/22/2010 |
| 7686675 | Blade sharpening for electric shavers Apparatus, kits, and methods for sharpening electric shavers having rotary and reciprocating-type cutting members are disclosed. A sharpening apparatus in accordance with an exemplary embodiment of the present invention may include an applicator tray or other applic... | 03/30/2010 |
| 7686676 | Precision sharpener for hunting and Asian knives A knife sharpener is provided which is capable of precision sharpening of hunting and similar knives that have a first and second blade face, each of which terminates at a facet that meets the corresponding facet to create the knife edge. At least the first of the b... | 03/30/2010 |
| 7614937 | Cutting device and method of generating cutting geometry An ultrasonic blade includes a blade body and a cutting edge. The blade body is defined about a generally axial line. The cutting edge is on the blade body and is defined by the intersection of a first surface and a second surface. The first surface includes a first... | 11/10/2009 |
| 7614938 | Reconditioned medical devices A method of reconditioning a medical device may include removing a portion of the medical device, and attaching to the medical device a replacement piece formed from nickel carbide and sized, shaped, and positioned to replace the portion removed. ... | 11/10/2009 |
| 7572171 | Cutting-tool holder used for grinding A cutting-tool holder (1) used for grinding includes a holder body (10) including a pair of pinching pieces (11, 11) biased to each other; and a pair of handgrips (30, 30) provided on the holder body (10) which sets the pair of pin... | 08/11/2009 |
| 7553216 | Honing guide assembly A honing guide and bevel setting jig for removable attachment to the honing guide to properly position the angle and projection of a tool to be sharpened in the jig to enable the tool to be honed at the proper angle and position. An adjustable roller that contacts a... | 06/30/2009 |
| 7549910 | Blade sharpening holder A sharpening holder for manually-sharpening a cutting edge to be honed over a honing surface includes a cylindrical body having a first end, a second end and an opening formed through the body between the first end and the second end, the opening having a tool suppo... | 06/23/2009 |
| 7530884 | System and method for duplicating keys A key duplication system employs a modular key duplication attachment in combination with a high-speed, rotary powered tool and a profiled abrasive cutter. The attachment comprises a base, a carriage assembly movable relative to the base, a profiled stylus secured t... | 05/12/2009 |
| 7503835 | Lawnmower blade sharpener In one embodiment, a method of sharpening reel blades on a lawnmower reel includes positioning a grinding wheel in contact with the reel, rotating the grinding wheel about an axis of rotation, linearly translating the grinding wheel along a longitudinal path. and ro... | 03/17/2009 |
| 7465220 | Apparatus and method for corrugating resharpened blades An apparatus and method are provided for cutting corrugations into the resharpened blade of a scissor. The apparatus comprises a rotatable corrugating wheel. The peripheral annular circumferentially disposed edge of the wheel defines a corrugating surface that is co... | 12/16/2008 |
| 7455572 | Method and device for grinding a saw chain A method and device for grinding a saw chain (26), the saw chain (26) being clamped in a position suitable for grinding. A rotating grinding disc (11) is manually transferred from an inactive position to an active position. Grinding of a cutter ... | 11/25/2008 |
| 7413504 | Blade sharpening device with blade contour copying device The present invention provides a blade sharpening device designed for sharpening a blade for a uniform sharpening of the edge thereof. The blade sharpening device contains a base having a guide slidably movable relative to the base. The guide includes a material tha... | 08/19/2008 |
| 7387562 | Blade sharpening device A blade sharpening device is provided for honing a cutting edge of a blade. The device includes a block with a top honing surface, and a jig assembly mounted on the block. The jig assembly holds a blade in a fixed position adjacent the honing surface, and directed t... | 06/17/2008 |
| 7374470 | Knife sharpening apparatus A sharpening apparatus having at least one guide slot, a drive pulley drivingly coupled to a frame and at least one idler pulley rotatably coupled to a support member. The support member is pivotably coupled to the frame. The apparatus includes an endless abrading b... | 05/20/2008 |
| 7338351 | Apparatus and method for sharpening tool blades A sharpening device for the blade of a tool such as a chisel or plane is in two parts. The first is a jig into which the blade is inserted with its tapered end projecting some distance beyond the jig. This distance is related to the angle to which the blade is to be... | 03/04/2008 |
| 7334339 | Folding knives In an exemplary sharpening element storage embodiment of the present invention, a sharpening element (5000) may be inserted in a groove (5001) that would be provided in an interior wall (5004) of a knife handle (or knife blade housing) (5005 | 02/26/2008 |
| 7335093 | Blade sharpening holder A sharpening holder for manually-sharpening a cutting edge to be honed over a honing surface includes a body, an adjustable clamping component, and a plurality of roller members. The body has a first end, a second end and a tool support surface between the first end... | 02/26/2008 |
| 7329172 | Rotary mower blade sharpener having movable griding wheels A device and method for sharpening a mower blade are provided, in which a mounting device for mounting a rotary blade having two opposite cutting edges to be sharpened, wherein the mounting device is capable of positioning the blade in a first fixed state and a seco... | 02/12/2008 |
| 7287445 | Apparatus for precision steeling/conditioning of knife edges An apparatus for manually steeling or conditioning the edge of a knife blade comprises a precision angle guide attached to a manual sharpening steel. The angle guide establishes a guiding surface that provides for sustained sliding or rolling contact with the face o... | 10/30/2007 |
| 7281969 | Tool sharpening and compound honing jig A holder, guide, or jig for sharpening tools is disclosed, in which the jig holds and orients a tool to be sharpened to properly align the tool on or against abrasive wheels, discs, or sharpening stones, thereby creating a fine, square, beveled edge on the tool, at ... | 10/16/2007 |
| 7238096 | Orbital rotary blade sharpener An orbital rotary blade sharpener for sharpening rotary cutter blades and other rotary blades includes a bottom blade holding portion having a center and a perimeter edge, a top blade holding portion rotatably connectable to said bottom blade holding portion, having... | 07/03/2007 |
| 7235004 | Precision means for sharpening and creation of microblades along cutting edges A knife-edge conditioning apparatus comprises at least one precision angled knife guide with one face of the knife blade maintained in sustained sliding or rolling contact and which guides the elongated edge of the blade into sustained contact with the hardened surf... | 06/26/2007 |
| 7229344 | Blade sharpening tool A blade sharpening tool includes a main body, a first grinding unit, a second grinding unit, and a protective jacket. The first grinding unit is directed toward a direction in line with the axial direction of the main body. Thus, when the first grinding unit is pres... | 06/12/2007 |
| 7229345 | Knife sharpener The invention concerns a knife sharpener for household knives or the like. In order to design a knife sharpener, which, one the one hand, can be used for sharpening and sits solidly on a surface without it having to be held, and which, on the other hand, is producib... | 06/12/2007 |
| 7220169 | Sharpening apparatus A sharpening apparatus (16) for a blade-like cutting implement. The sharpening apparatus has an elongate body (18) and a cutting edge extending widthwise across one end of the body (11) at a predetermined angle relative to the longitudinal axis ... | 05/22/2007 |
| 7220170 | Blade sharpening machines The invention concerns a blade sharpening machine that can be driven either by manual or automatic control. The blade sharpening machine possess two rotating grinding wheels and a mechanism for supporting the blade to be sharpened so that said blade can be sharpened... | 05/22/2007 |
| 7210986 | System and method for duplicating keys A key duplication system employs a modular key duplication attachment in combination with a high-speed, rotary powered tool and a profiled abrasive cutter. The attachment comprises a base, a carriage assembly movable relative to the base, a profiled stylus secured t... | 05/01/2007 |
| 7198558 | Knife blade dressing apparatus A dressing device (10,90) for sharpening or conditioning of a blade (18) or the like includes one or more disk pairs (36–40,108), each having a pair of disks (52,54,110,112) respectively presenting a series of circumferentially spaced, ... | 04/03/2007 |
| 7186169 | Angle positioning tool and hand-scaler grinding device using same The object of the present invention is to provide an angle setting tool for setting the blade section of a hand scaler at a predetermined angle during sharpening of the scaler, and a hand scaler sharpening device which has a relatively simple structure, is easy to o... | 03/06/2007 |
| RE39492 | Method for sharpening bedknives A method of sharpening bedknives for reel type mowers by installing sets of locator surfaces in a bedknife grinder, grinding the surfaces with the grinder to be aligned and parallel, installing a bedknife located against surfaces in both sets, and electromagneticall... | 02/20/2007 |
| 7175512 | Cutting chain grinder and method of grinding A cutting chain bench grinder includes a self-centering vise that centers the cutting chain on an axis of rotation of the vise base. By centering the cutting chain to intersect the vise base axis of rotation, consistent top plate lengths and hook angles can be groun... | 02/13/2007 |
