Class / Patent application number | Description | Number of patent applications / Date published |
451045000 | Razor, knife, or scissors sharpening | 29 |
20080261494 | 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 blade faces has a lower distinct planar or concave section adjacent the edge facet with the lower planar or concave section of the face being set at an angle to the center line of the blade thickness that is different from the angle of the adjoining upper section of the same blade face located adjacent to the back of the blade. The sharpener includes a sharpening member such as one having an abrasive coated surface. The sharpener also includes a planar angle knife guide surface of a knife guide which is designed for intimate sliding and sustaining contact with the second face of the blade in order to position an edge facet on the first of the faces into precise angular relation with the sharpening surface. The sharpener also includes a knife holding spring that applies force against the first face of the blade predominantly at one or more locations on the lower planar or concave section of the first face that is adjacent to the edge facet being sharpened in order that the lower section adjacent the edge on the second face of the blade is pressured to align with and remain in intimate sliding alignment with the guide surface as the blade edge facet on the first face is being sharpened. | 10-23-2008 |
20080280540 | METHOD FOR BIOPSY DEVICE NEEDLE TIP - A biopsy device having a cannula with a distal tip is disclosed. The distal tip includes a blade, and can be a unitary metal injection molded component including a base and a blade. The blade can have a hardness of at least 40 HRC. The blade can be hardened, polished, and then honed to provide a sharp leading edge. | 11-13-2008 |
20090209177 | 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. | 08-20-2009 |
20090221214 | METHOD AND DEVICE FOR TRUING A RAZOR BLADE - Truing devices constructed and arranged for truing one or more disposable metallic blades and methods for the manufacture and use of same are disclosed herein. | 09-03-2009 |
20090233530 | SHARPENER FOR KNIVES WITH WIDELY DIFFERENT EDGE ANGLES - A wide range of knives and blades, including Western, Asian or traditional Japanese style blades that have a primary edge facet on at least one side of the knife edge are sharpened through use of an electric knife sharpener having a first sharpening stage with at least one rotating abrasive surface disk and a knife angle guide to position the blade's facet at a first relative angle of approximately 15 degrees as it contacts the moving abrasive surface. The knife sharpener includes a second sharpening stage with at least one rotating abrasive surfaced disk and a knife angle guide to position the blade's facet at a second relative angle of approximately 20 degrees as it contacts the rotating abrasive surface. The knife sharpener also has a third stropping stage with at least one rotating stropping disk containing abrasive particles of less than 1 thousandth of inch diameter and a knife angle guide to position the blade's facet at a third relative angle larger than the first and second angles as it contacts the rotating surface of the stropping disk. The rotating sharpening and stropping disks are displaceable from a rest position against specific restraining forces when contacted by the edge facet being sharpened or stropped. | 09-17-2009 |
20090264051 | Self-sharpening tool blade and method - A self-sharpening tool blade is to be used on shovels, spades, cultivating tools, garden hand tools, and other tools and mechanical equipment which need to have consistently sharp cutting edges in order to penetrate into and dig in the ground. The blade utilizes the concept of differential surface wear for self-sharpening. The back side of the tool blade sustains more wear than the top side, since it is most often in contact with more abrasive soil and earth debris, while the blade's top side is usually in contact with abrasive materials which exert less abrasion and less pressure than that which the back side experiences. This is due to the manner in which digging occurs; that is the top side of the blade contacts soil and soil debris which is free to move away from the blade during digging, whereas soil material contacting the back side of the blade is, for the most part, compacted and immovable, providing a higher degree of abrasive friction. The difference in abrasive forces and pressure differential between the top side and back side of the blades serves to maintain and, over time, sharpens the taper angle of the blade. | 10-22-2009 |
20100068975 | Razor blade sharpener and method of sharpening - A device for sharpening razor blades, comprising,
| 03-18-2010 |
20100184360 | 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. | 07-22-2010 |
20100203810 | 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 horizontally and downward during the sharpening motion. Independent horizontal and vertical movements allow addressing irregularly shaped blades including blades with a radial shape and convex blades. | 08-12-2010 |
20110034111 | NOVEL SHARPENERS TO CREATE CROSS-GRIND KNIFE EDGES - A sharpener for creating cross-grind knife edges includes a nominally flat annular abrasive sharpening member which could be a ring or a disk and is rotated about its center and held against a moving knife edge facet to simultaneously and sequentially abrade the knife edge at multiple locations on the abrasive member. The disk may be slidably mounted on a shaft in opposition to a spring restraining force. The disk is nominally disposed in a vertical orientation. The sharpener may include multiple stages including a manual stage having a pair of off axis conical shaped rotatable abrasive coated disks which have abrading lines on opposing facets which are not parallel but cross and intersect in a crossing pattern at the blade edge. | 02-10-2011 |
20110081838 | 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 between underlying support structures on a base and a securing cap. A planar edge of the stone is exposed in an adjustable channel between the stone and a slidably adjustable sidewall. The angle of the sharpening stone corresponds to correct angle for a sharpened edge on a rotary blade disposed on a hand held rotary cutter, which is inserted into the channel. By advancing the cutter through the channel an edge of the rotary blade may be honed and/or sharpened. | 04-07-2011 |
20110136412 | CUTTING TOOL SHARPENER | 06-09-2011 |
20110201257 | ADJUSTABLE KNIFE SHARPENER - A motorized knife sharpener and related methods of sharpening knives, wherein the knife sharpener is capable of sharpening knives of varying types and styles. The motorized knife sharpener includes a housing, motorized grinding assembly and an adjustable blade guide assembly. The adjustable blade guide assembly includes a selector switch accessible to a user on a front portion of the housing. With the selector switch, the user is able to selectively adjust a presentation angle defined by a blade guide relative to a grinding wheel. The selector switch is operably coupled to the blade guide with a cam assembly that pivots the blade guide with respect to the grinding wheel so as to vary the blade presentation angle. | 08-18-2011 |
20110201258 | MOWER BLADE SHARPENING DEVICE - A mower blade sharpening device comprising a guide body having a sharpening rod guide, a sharpening rod having a sharpener end, and an operator end. The sharpening rod is disposed in the sharpening rod guide. A sharpener is disposed on the sharpener end of the sharpening rod. Also disclosed is a method for sharpening a mower blade using the sharpening device. | 08-18-2011 |
20110312253 | METHOD OF MANUFACTURING FORMED CUTTER AND GRINDING TOOL FOR FORMED CUTTER - A formed cutter | 12-22-2011 |
20120094582 | BLADE SHARPENING DEVICE - The invention provides a blade sharpening device designed for sharpening a blade for a uniform sharpening of the edge thereof. Generally, the blade sharpening device includes a base, a guide, a carriage, and a blade holder. The blade holder secures the blade while being sharpened. The blade holder is connected to the guide which is movable relative to the base. The base includes a material that receives an impression of a blade to define a blade contour and a grinding medium which provides an abrasive surface. The carriage interacts with the guide to define a sharpening path substantially aligning with the blade contour. The carriage and the guide direct the movement of the abrasive surface along the contour of the blade for a uniform sharpening of the edge thereof. | 04-19-2012 |
20120108150 | PORTABLE POWER SHARPENER FOR HAND HELD ROTARY CUTTER BLADES - Apparatus, systems and methods related to sharpening blades for rotary cutters. In one illustrative embodiment, a power sharpener system secures a rotary cutting blade between upper and lower columns that form a rotating axle in contact with upper and lower sharpening stones, each positioned at an appropriate angle to contact a cutting edges of the rotary blade for sharpening. The upper column may be rotatably attached to an upper cover or lid and the lower column rotatably disposed in a base. After the rotary blade is secured, an electric motor is used to rotate the column, contacting the edges of the blade against the stones to simultaneously sharpen both edges of the blade. In some embodiments, a retractable plate may be disposed around the lower column for placement of the rotary blade thereon and a lifting lever may be used to facilitate blade removal. | 05-03-2012 |
20120108151 | Multiple Blade Sharpening Apparatus and Method - The competitive and technological evolution of sports with ice skates such as ice hockey, speed skating, and figure skating as well as the conditioning and training of these athletes places increased demands on their equipment. Amongst these are the ability to vary the blade profile at different points to increase speed, agility, acceleration, etc according to the sport and the athlete's personal preferences. In many instances matching left and right blades is also important. In contrast in amateur sports where users access retail skate sharpening services speed or service and cost of service is important. A system and method are taught for simultaneously profiling both blades of user for increasing speed and reducing cost in retail environments whilst aligning there profiles in more professional applications. The method further allows for profiles to vary in cross-section along the length of the blade. | 05-03-2012 |
20120122376 | PRE-HONED DOCTOR BLADE WITH A CURVED PROFILE LAMELLA AND METHOD FOR PRODUCING SAID DOCTOR BLADE - A method of producing a doctor blade from a band. A grinding wheel is positioned above the band with its axis of rotation not at right angles to the edge of the doctor blade. The grinding wheel then is rotated and the band is moved beneath the grinding wheel parallel to its edge. | 05-17-2012 |
20120184186 | BLADE SHARPENING SYSTEM AND METHOD - A system for sharpening circular, knife edged blades operates to bias an infeed grinding wheel into contact with the first edge of the blade and an outfeed grinding wheel into contact with the second edge of the blade. The grinding wheels are spaced so that they contact the respective edges of the blade at a point which is spaced by no more than 1 inch from the center line of the blade. Contact between the grinding wheels and the blade is accomplished solely by pushing the wheels from their sides which are opposite the blade contacting surface. The system includes provisions for adjusting the position of the wheels relative to the blade so as to accommodate blade wear. | 07-19-2012 |
20120196513 | 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 between underlying support structures on a base and a securing cap. A planar edge of the stone is exposed in an adjustable channel between the stone and a slidably adjustable sidewall. The angle of the sharpening stone corresponds to correct angle for a sharpened edge on a rotary blade disposed on a hand held rotary cutter, which is inserted into the channel. By advancing the cutter through the channel an edge of the rotary blade may be honed and/or sharpened. | 08-02-2012 |
20130324014 | Hand-Held Tool Sharpener With Flexible Abrasive Disk - Apparatus and method for sharpening a cutting tool, such as but not limited to a kitchen knife. In accordance with some embodiments, a flexible abrasive disk is adapted for rotation about a central axis at a selected rotational velocity. Centripetal forces imparted to the disk during rotation urge the disk to a neutral position in which an outer peripheral portion of the disk is extended toward a selected plane. A housing adjacent the flexible disk has a guide slot with a guide surface at a selected bevel angle with respect to the selected plane. The guide surface is adapted to facilitate presentation of a cutting tool in contacting engagement against the disk. The cutting tool is presented at the selected bevel angle to induce curvilinear displacement of the flexible disk during sharpening of a cutting edge that extends along a side of the cutting tool. | 12-05-2013 |
20140099867 | Device and Method for Processing a Blade Edge - A blade processing (e.g., sharpening) device includes two sets of overlapping edge processing rings. Inner diameter surfaces of the edge processing rings define a notch suitable for effectively processing a blade with a convex cutting edge profile. Certain types of edge processing rings are movable relative to one another to adjust an edge processing angle of the notch. Certain types of blade processing devices also can also process blades with concave cutting edge profiles. The rings may be contained at least partially within a protective housing. A blade can be processed by inserting a blade through a blade insertion opening in the housing and into the notch while a handle of the blade remains outside the housing. By grasping the handle, the blade can be manually reciprocated within the notch during edge processing. | 04-10-2014 |
20140335765 | ADJUSTABLE SHARPENING APPARATUS AND METHOD FOR CUTTING IMPLEMENTS - An apparatus for sharpening a cutting implement has a base, a first clamping member and a second clamping member extending above the base. The clamping members have opposite top portions, bottom portions, and vertical inside surfaces substantially parallel to a vertical plane of the cutting implement. At least one guide rod is pivotably attached to the base. The guide rod distal end extends above the base at an angle to the vertical plane. An abrasive implement holder is configured to slidably move along the at least one guide rod. The abrasive implement holder has a body and holder aperture therethrough that extends along a guide rod axis and that is sized and configured to receive the guide rod. An adjustable face plate is pivotably connected to the body and defines a second angle with the guide rod axis. Pivoting the adjustable face plate changes the second angle. | 11-13-2014 |
20150079880 | Sharpening a Cutting Edge of a Tool Using a Reverse Sharpening Guide - Apparatus and method for sharpening a tool. In accordance with some embodiments, a selected side surface of the tool is placed in contacting engagement against an upper reverse sharpening guide surface that faces an abrasive surface extending along a first plane. The upper reverse sharpening guide surface is aligned along a second plane that intersects the first plane at an acute angle. A tool cutting edge contactingly engages a non-abrasive support surface disposed between the upper reverse sharpening guide surface and the abrasive surface to establish a plunge depth of the tool prior to contact with the abrasive surface. The tool is thereafter moved away from the upper reverse sharpening guide in a lateral direction across the abrasive surface while nominally maintaining the tool at the acute angle to sharpen the cutting edge in a trailing cutting edge orientation. | 03-19-2015 |
20150099430 | POCKET SIZED ADJUSTABLE KNIFE SHARPENER - A knife blade sharpener including two generally circular sharpening members pivotally mounted about a pivot axis and having opposed grinding edges. The grinding edges are located along one side of a notch formed in each of the generally circular sharpening members and can be brought to face one another, adjustably subtending an obtuse angle therebetween. The pivot axis may be established by a screw and a knurled nut enabling the user to tighten the two generally circular sharpening members together at a selected subtended angle for sharpening. A knife blade may be drawn through a wedge shaped gap between the two mutually facing grinding edges, and thereby sharpened. The knife blade sharpener has resilient gripping pads and a holster which facilitates gripping as well as for stowage. | 04-09-2015 |
20150147943 | DEVICE AND METHOD FOR PROCESSING A BLADE EDGE - A blade processing (e.g., sharpening) device includes two sets of overlapping edge processing rings Inner diameter surfaces of the edge processing rings define a notch suitable for effectively processing a blade with a convex cutting edge profile. Certain types of edge processing rings are movable relative to one another to adjust an edge processing angle of the notch. Certain types of blade processing devices also can also process blades with concave cutting edge profiles. The rings may be contained at least partially within a protective housing. A blade can be processed by inserting a blade through a blade insertion opening in the housing and into the notch while a handle of the blade remains outside the housing. By grasping the handle, the blade can be manually reciprocated within the notch during edge processing. | 05-28-2015 |
20160082563 | BLADE HONING APPARATUS AND CUTTING APPARATUS INCORPORATING SAME - A honing apparatus includes a sharpening stone that has a sharpening surface configured to sharpen the edge of the blade upon engaging contact with the edge of the blade. A frame is operatively coupled to the sharpening stone, and a weight element is supported by the frame and positioned so as to urge the sharpening stone toward the edge of the blade. The frame may be pivotally coupled to a fixed element at a pivoting location, and the weight element may be positioned so as to create a moment about the pivoting location, with the moment urging the sharpening stone toward the edge of the blade. | 03-24-2016 |
20170232569 | POWERED TOOL SHARPENER WITH MULTI-SPEED ABRASIVE | 08-17-2017 |