Class 451/234 - Blade sharpener

Subclass of Class 451 - Abrading
Definition: Abrading machine especially adapted to sharpen the edge
No. of patents: 36
Last issue date: 02/10/2009

Number	Title	Issue Date
7488238	Emery wheel grinding machine with adjustable drill bit chuck The emery wheel grinding machine with adjustable drill bit chuck disclosed herein has an adjustable chuck in which is provided with a T-bushing having an outer flange formed at one end thereof. The outer flange is provided with several pairs of stop traps along its ...	02/10/2009
7473164	Self-centering skate holder A self-centering skate holder for clamping a skate blade from above and below which maintains the blade at a predetermined height and parallelism. A handle is connected with a cable which is taut and extends around the circumference of the upstanding vertical member...	01/06/2009
7431637	Saw-setting machine for saw chain It is to provide a saw chain sharpener such that while a saw chain is clamped at both ends by a holding plate, which is supported forward of a handy type electric motor, so as to stabilize its sharpening posture, a grinding tool such as a round rod-shaped grinding t...	10/07/2008
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
7264540	Arrow blade sharpening apparatus The arrow blade sharpening apparatus is best suited for precision sharpening of arrow blades, Exacto® knife blades, and other like edges which require precision and fine honing. The transparent lidded apparatus is motorized and counter rotates drive gears and then ...	09/04/2007
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
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
7140948	Machine for machining elongate workpieces provided with cutting teeth, in particular for grinding bandsaw blades A machine for machining bandsaw blades. A machining device, a feed device, a workpiece-fixing device and a workpiece guiding device are mounted to a common central machine block. The machining device has a rotatably driven positionable adjustable grinding wheel with...	11/28/2006
7134935	Lubricated razor blade edge sanitizer and sharpener An automatic razor blade sharpener simultaneously sharpens and sanitizes multiple edges of a spring-loaded disposable razor blade cartridge without edge overheating by lubricated gentle contact of the blade edges with a moving rubber or polymeric compliant belt that...	11/14/2006
7125325	Portable sharpening system for a dual-knife cutting machine A grinding apparatus (36) for a paper cutting mechanism (10) is shown and includes a coupler (38), for mounting on an upper rail (14) of the cutting mechanism (10), a motor-driven grinder (40), and an adjustable support (...	10/24/2006
7104874	Razor sharpening apparatus A sharpening apparatus for razors includes a blade sharpener rotatably supported within a housing and driven by mechanical activation or by a motor. An opening in the housing provides access to the blade sharpener for a blade head of a razor containing one or more b...	09/12/2006
6971949	Sharpening guide for dental tools A sharpening guide for a dental tool is provided, with the dental tool having a handle, a working portion, and a shank extending between the handle and the working portion. The sharpening guide includes a guide body and at least one opening formed in the guide body ...	12/06/2005
6955590	Ice resurfacing blade sharpener Blade sharpener apparatus and method for ice resurfacing machines which can include a tabletop for laying a longitudinal blade from an ice resurfacing machine thereon in a stationary position. A moveable carrier assembly attached to the table includes a drill press ...	10/18/2005
6932683	Knife sharper having cutting edge protective structure A knife sharpener includes a housing having one or more access slots for receiving knife blades to be sharpened, one or more grinding wheels rotatably received in the housing and disposed close to the access slots of the housing for grinding and sharpening the cutti...	08/23/2005
6908373	Shear blade sharpener method and apparatus Blade sharpener apparatus and method for ice resurfacing and paper cutting machines includes a table for laying a longitudinal blade in a stationary position thereon. A moveable carrier assembly attached to the table has a drill press power head that is lowered from...	06/21/2005
6881137	Manual knife sharpener with angle control A sharpener for blades comprises a physical structure supporting at least one abrasive surface. A displaceable guiding plate having an integral linear structural feature of the support is disposed toward one side of the abrasive surface. The linear structural featur...	04/19/2005
6863600	Apparatus for precision edge refinement of metallic cutting blades A finishing apparatus modifies the physical structure along the edge of a metal knife blade wherein the edge is formed at the junction of two edge facets presharpened with abrasives. The finishing apparatus consists of at least one precision angular knife guide that...	03/08/2005
6848971	Electronic bevel angle indicator for a hollow grinder An electronic hollow grinder bevel angle indicator wherein a microprocessor calculates the grinding bevel angle that will be obtained when a tool is placed flat upon a tool rest and presented to the periphery of a rotating grinding wheel. The calculated bevel angle ...	02/01/2005
6589104	Electric chain saw sharpening machine The present invention relates to an electric sharpening machine for chain saws capable of correctly sharpening the teeth at any number of desired cutting angles within a given range; this system according to the invention allows rotation of an upper porti...	07/08/2003
6443819	Device for dressing grinding wheels A movable frame assembly to move a device for dressing a grinding wheel for the sharpening an ice skate blade. The device uses a housing surrounding a grinding wheel and movable frame with a swing arm. A dressing tool is mounted in the dresser swing arm a...	09/03/2002
6381862	Hollow grinder bevel angle control mechanism An improved hollow grinder bevel angle control wherein a height-attitude coupling mechanism links the height and attitude motions of an adjustable tool-rest, and a scale on a stationary portion of the grinder cooperates with a pointer on the height-attitu...	05/07/2002
5893792	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 electro...	04/13/1999
5685768	Grinding machine with lifting mechanism A grinding machine for sharpening the blades of a mower. The grinding machine includes a lifting system for raising the mowing machine onto an operating platform where the blades are sharpened. A rotationally driven grinding wheel traverses its drive shaf...	11/11/1997
5645470	Method of honing a knife blade A honing process for a long knife blade such as that used in chipping wood products comprises two honing bodies each formed by a shaft carrying three honing discs with the shafts spaced by a distance less than the radius of the discs so the discs interlea...	07/08/1997
5641321	Elongated cutting tool for wood working and apparatus for and method of grinding the same The invention provides a novel cutting tool used in wood working, which has a sufficiently thick cutting edge allowing stable cutting of a veneer from a log as well as an apparatus for and a method of grinding the cutting edge to have a favorable shape an...	06/24/1997
5618226	Apparatus for grinding a reciprocal trimming blade An apparatus for grinding a blade used in, for example, a glass or hedge trimmer including grinder support and a blade mount provided close to each other. The grinder support holds a grinder, which has a round grindstone, in such a manner that the grindin...	04/08/1997
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
5480345	Knife sharpener This invention relates to a knife sharpener and more particularly to a knife sharpening device wherein the knife is clamped in a fixed position on a table or platform and the knife sharpening or grinding device is moved along the edge of the knife to be s...	01/02/1996
5329731	Mulcher blade grinder and method thereof A rotary grinder for sharpening mulcher blades. A grinding wheel is rotatably mounted atop a work support surface. A platform removably mounted to the work support surface includes a first upwardly facing blade supporting surface and a second upwardly fac...	07/19/1994
5133157	Apparatus for sharpening cutting edges of knife blades Apparatus for separately sharpening the two sides of cutting edges of knife blades in slaughterhouses, butcher shops and similar establishments has a housing for a ring-shaped flexible sharpening tool and a drum-shaped carrier for the tool. The carrier is...	07/28/1992
5090159	Multi-purpose grinder A multi-purpose grinding device for sharpening hardware ranging from scissors to saw blades. It comprises a powered grinding wheel which can be moved and oriented in a plurality of positions relative to the item to be sharpened which is held in a fixed lo...	02/25/1992
4991355	Apparatus for sharpening points A needle sharp conical point can be quickly honed by methods and apparatus that employ reciprocating or rotating abrasive surfaces that may be revolved in a circle around the point being sharpened. A reciprocating surface may be used to hone non-conical p...	02/12/1991
4821458	Combine blade sharpening apparatus A sharpening apparatus for sharpening the cutting edges of combine blades. The apparatus includes a base with a table adjustably positioned thereon. The table may be moved transversely and longitudinally with respect to the base. A combine blade assembly ...	04/18/1989
4762278	Combination lawn mower washer and sharpener The present invention relates to a device designed to be detachably attached to the undercarriage of a lawn mower through the use of hooks engageable with the blades of the lawn mower. The device includes an annulus having a plurality of holes therethroug...	08/09/1988

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Class 451/234 - Blade sharpener