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公开(公告)号：US11571826B1
公开(公告)日：2023-02-07
申请号：US17856102
申请日：2022-07-01
申请人： DAREX, LLC
发明人： Daniel T Dovel
IPC分类号： B26B5/00
摘要： A utility knife includes a blade, a housing to store the blade, an actuator, and a pinion gear to deploy the blade. The pinion gear includes one or more sets of teeth that are engaged with a fixed rack of the housing and a sliding rack of the blade holder. The pinion gear is also coupled to the actuator, which is configured to linearly translate the pinion gear. As the pinion gear linearly translates between front and back ends of the housing, the pinion gear rotates due to its engagement with the fixed rack. The further engagement between the pinion gear and the sliding rack causes the sliding rack to advance in the same linear direction as the pinion gear by a distance that is greater than the linear distance traversed by the pinion gear, thereby advancing or retracting the blade connected to the blade holder.
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公开(公告)号：US11267103B2
公开(公告)日：2022-03-08
申请号：US16887857
申请日：2020-05-29
申请人： Darex, LLC
IPC分类号： B24D15/08
摘要： Apparatus and method for sharpening a cutting tool, such as a knife. A sharpener includes a first support member, a second support member and a hinge assembly. The first support member supports a first abrasive surface and has at least a first guide at a selected end of the first abrasive surface. The second support member supports a second abrasive surface and has at least a second guide at a selected end of the second abrasive surface. A hinge assembly couples the first and second support member to facilitate movement of the second support member relative to the first support member between a closed position and an open position. In the closed position, the first guide is in facing relation to the second guide and the first abrasive surface is in facing relation to the second abrasive surface.
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公开(公告)号：US20200376629A1
公开(公告)日：2020-12-03
申请号：US16887857
申请日：2020-05-29
申请人： Darex, LLC
IPC分类号： B24D15/08
摘要： Apparatus and method for sharpening a cutting tool, such as a knife. A sharpener includes a first support member, a second support member and a hinge assembly. The first support member supports a first abrasive surface and has at least a first guide at a selected end of the first abrasive surface. The second support member supports a second abrasive surface and has at least a second guide at a selected end of the second abrasive surface. A hinge assembly couples the first and second support member to facilitate movement of the second support member relative to the first support member between a closed position and an open position. In the closed position, the first guide is in facing relation to the second guide and the first abrasive surface is in facing relation to the second abrasive surface.
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公开(公告)号：US20180056468A1
公开(公告)日：2018-03-01
申请号：US15804514
申请日：2017-11-06
申请人： Darex, LLC
发明人： Daniel T. Dovel
摘要： 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 to engage, via rolling contact, the cutting edge during the presentation of the cutting edge against the abrasive surface.
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公开(公告)号：US09808902B2
公开(公告)日：2017-11-07
申请号：US15430252
申请日：2017-02-10
申请人： Darex, LLC
发明人： Daniel T. Dovel
CPC分类号： B24B3/54 , B24B21/002 , B24B21/20 , B24B41/066 , B24B49/10 , B24B49/12 , B24B51/00
摘要： Method and apparatus for sharpening a cutting tool. In some embodiments, a sharpener has a guide assembly adjacent a moveable abrasive medium. The medium is advanced at a first speed relative to the guide assembly during a coarse sharpening operation in which a user presents the cutting tool against the medium to shape a side of the cutting tool and generate distended material from the cutting edge (e.g., burrs). The medium is subsequently slowed to a lower, second speed for a fine sharpening operation in which the user presents the cutting tool against the medium to remove the distended material and provide a sharpened cutting edge.
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公开(公告)号：US20170232569A1
公开(公告)日：2017-08-17
申请号：US15430252
申请日：2017-02-10
申请人： Darex, LLC
发明人： Daniel T. Dovel
CPC分类号： B24B3/54 , B24B21/002 , B24B21/20 , B24B41/066 , B24B49/10 , B24B49/12 , B24B51/00
摘要： Method and apparatus for sharpening a cutting tool. In some embodiments, a sharpener has a guide assembly adjacent a moveable abrasive medium. The medium is advanced at a first speed relative to the guide assembly during a coarse sharpening operation in which a user presents the cutting tool against the medium to shape a side of the cutting tool and generate distended material from the cutting edge (e.g., burrs). The medium is subsequently slowed to a lower, second speed for a fine sharpening operation in which the user presents the cutting tool against the medium to remove the distended material and provide a sharpened cutting edge.
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公开(公告)号：US20140199926A1
公开(公告)日：2014-07-17
申请号：US14213264
申请日：2014-03-14
申请人： Darex, LLC
发明人： Daniel T. Dovel
摘要： Method and apparatus for sharpening a cutting tool. In some embodiments, an abrasive endless belt is rotated in tension along a neutral plane between spaced apart first and second rollers. A guide assembly has spaced apart first and second guide surfaces which collectively converge to an intervening base surface to form a guide channel. Upon insertion of a blade of a cutting tool into the guide channel, a selected side of the blade contactingly slides against at least a selected one of the first or second guide surfaces and a first portion of a cutting edge of the blade contactingly engages the base surface to serve as a plunge depth limit stop for the blade. The endless belt is contactingly deflected by a second portion of the cutting edge away from the neutral plane to sharpen the second portion while the first portion remains in contact with the base surface.
摘要翻译： 用于磨削切削工具的方法和装置。 在一些实施例中，磨料环形带在间隔开的第一和第二辊之间沿着中性平面张紧地旋转。 引导组件具有间隔开的第一和第二引导表面，它们共同地会聚到中间的基面以形成引导通道。 在将切割工具的刀片插入引导通道中时，刀片的选定侧面接触地抵靠第一或第二引导表面中的至少一个选定的一个滑动，并且刀片的切割边缘的第一部分与基部 表面作为刀片的深入深度限制挡块。 环形带由切割边缘的第二部分与中性平面接触地偏转，以在第一部分保持与基面接触的同时锐化第二部分。
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公开(公告)号：US20220088737A1
公开(公告)日：2022-03-24
申请号：US17544525
申请日：2021-12-07
申请人： Darex, LLC
IPC分类号： B24B3/54
摘要： Apparatus configured to sharpen a blade of a cutting tool. In some embodiments, a sharpener is provided having a housing and a sharpening stage with at least one sharpening element. Each sharpening element is characterized as a plate and has a curvilinearly extending, concave sharpening surface configured to impart a corresponding convex sharpening geometry to a selected side of the blade during a sharpening operation in which a user retracts the blade along a longitudinal drawing axis through the sharpening stage. A pair of intersecting sharpening elements may be provided to form a substantially v-shaped groove for a ripper-type sharpening stage. The sharpening element(s) may be fixed or tiltable with respect to the housing. The sharpening element(s) may further be moveable in a lateral direction to narrow or widen the v-shaped groove and change the convex geometry and edge angle imparted to the blade.
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