| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 451349000 | Edge-tool sharpener | 10 |
| 20100227538 | Sharpening device for knife blades - A sharpening device | 09-09-2010 |
| 20130295824 | Blade Sharpener - A blade sharpener including a main frame casing having a grip and a grinding chamber and a grinder assembly detachably installed in the grinding chamber in which the grinder assembly is formed by a pair of shaft supports facing each other, a supporting window provided in each of the shaft supports, a rotary shaft supported at both end portions thereof by the vertical shaft supports, an abrasive wheel provided on the rotary shaft at substantially its axial center, and a pair of lateral coil springs each provided on either side of the abrasive wheel. The rotary shaft can be supported by a pair of longitudinal coil springs installed in the shaft supports. | 11-07-2013 |
| 20130331010 | 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. | 12-12-2013 |
| 20140170941 | KNIFE SHARPENER - In a knife sharpener with two whetting disks ( | 06-19-2014 |
| 20140349555 | BLADE SHARPENING SYSTEM FOR AGRICULTURAL IMPLEMENTS - A blade sharpening system is provided that includes a base, and a rod extending from the base. The blade sharpening system also includes a sharpener slidably coupled to the rod and configured to engage a generally circular blade of an agricultural implement while the generally circular blade is mounted on the agricultural implement. The sharpener is also configured to move along the rod to accommodate lateral variations in a profile of the generally circular blade. | 11-27-2014 |
| 20140357166 | BLADE SHARPENING SYSTEM FOR AGRICULTURAL IMPLEMENTS - A blade sharpening system is provided that includes a base, and a pivoting member rotatably coupled to the base by a shaft. The blade sharpening system also includes a sharpener coupled to the pivoting member and configured to engage a generally circular blade of an agricultural implement while the generally circular blade is mounted on the agricultural implement. The pivoting member is configured to enable movement of the sharpener to accommodate lateral variations in a profile of the generally circular blade, and the shaft is movable relative to the pivoting member to adjust a contact force between the sharpener and the generally circular blade. | 12-04-2014 |
| 20150099436 | RECIPROCATING SKATE BLADE SHARPENER - 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. | 04-09-2015 |
| 20150343590 | Selectively Deployable Rotatable Edge Guide to Support a Cutting Tool During a Sharpening Operation - Apparatus for sharpening a cutting tool. In some embodiments, a tool sharpener includes an abrasive medium having an abrasive surface. A stationary tool support guide provides a guide surface that supports a side of the tool during presentation of a cutting edge of the tool against the abrasive surface. A rotatable edge guide has a roller member with a curvilinearly extending outer surface. The roller member is rotatable about an edge guide roller axis and is moveable between a deployed position and a retracted position. In the deployed position, the roller member is positioned to engage, via rolling contact, the cutting edge during the presentation of the cutting edge against the abrasive surface. In the retracted position, the roller member is positioned to provide a non-contacting clearing relation with the cutting edge during said presentation. | 12-03-2015 |
| 20150343591 | Tool Sharpener with Adjustable Support Guide - Apparatus for sharpening a cutting tool. In some embodiments, a tool sharpener is provided with a flexible abrasive medium having an abrasive surface and arranged along a planar extent. A guide assembly has a guide frame, a cam surface, and a pivotal guide member. A guide surface on the guide member extends at a selected angle with respect to the planar extent of the medium to support a first side of the tool during presentation of a second side and cutting edge of the tool against the abrasive surface along the planar extent. A cam follower contactingly engages the cam surface to establish the selected angle. A biasing mechanism applies a biasing force to urge the guide surface to pivot toward the planar extent to maintain the cam follower in contact with the cam surface. | 12-03-2015 |
| 20220134503 | Adjustable Sharpener - An adjustable sharpener including a body having two sharpening slots, a first arm with a first abrasive element connected to a second arm with a second abrasive element, and a third arm with a third abrasive element connected to a fourth arm with a fourth abrasive element. The first and second abrasive elements are positioned in the first sharpening slot, and the third and fourth abrasive elements are positioned in the second sharpening slot. The adjustable sharpener also includes an adjuster connected to the body and an adjustment assembly connected to the adjuster, the first arm and the third arm. Linear movement of the adjuster causes rotational movement of the first arm and the third arm. In this regard, the adjuster allows the user to manually increase or decrease the sharpening angle between the abrasive elements in the sharpening slots. | 05-05-2022 |
