Patents Assigned to Darex, LLC
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Patent number: 11975420Abstract: Method and apparatus for sharpening a cutting edge of a cutting tool, such as a kitchen knife. In some embodiments, an abrasive assembly has a frame, a handle, and a cartridge that supports a plurality of abrasive members each having an associated abrasive surface. A rod affixes the abrasive assembly to a base assembly to facilitate movement of the abrasive assembly along the cutting edge of the tool responsive to engagement, by a user, of the user handle. Each abrasive member is configured to be moved, by the user, with respect to the handle to present each abrasive surface in turn. In some cases, the cartridge is rotatable about a cartridge axis that may be parallel or non-parallel to a central axis of the rod.Type: GrantFiled: December 6, 2022Date of Patent: May 7, 2024Assignee: Darex, LLCInventors: Steven L. Baker, Conner S. MacFarlane, Joseph T. Zachariasen, Daniel T. Dovel, Travis Campbell
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Patent number: 11969909Abstract: A utility blade includes a first blade retention feature positioned on a proximal edge of a tang of the utility blade. The proximal edge is angularly offset from a longitudinal axis of the utility blade. The first blade retention feature is associated with an engagement axis parallel to the longitudinal axis of the utility blade. The utility blade is configured to translate along the engagement axis to cause the first blade retention feature to engage with a first blade engagement component of a blade holder. The utility blade further includes a second blade retention feature positioned on a second edge of the tang of the utility blade. The second blade retention feature is positioned along the longitudinal axis of the utility blade and between the first blade retention feature and a distal tip of a cutting portion of the utility blade.Type: GrantFiled: February 10, 2023Date of Patent: April 30, 2024Assignee: DAREX, LLCInventor: Daniel T Dovel
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Patent number: 11883930Abstract: Method and apparatus for sharpening a cutting edge of a cutting tool, such as a kitchen knife. A fixture secures opposing sides of a blade of the cutting tool and includes a main body and hinged first and second clamping jaws each having a clamping end adapted to compressingly engage a respective side of the blade. A guide coupled to the main body has converging support surfaces to contactingly engage a back edge (spine) of the blade opposite the cutting edge to center the blade along a central plane of the fixture. A retraction mechanism establishes a clamping force upon each of the respective sides of the blade via the clamping jaws. Further embodiments include a base assembly adapted to receive the fixture, and a swing arm style abrasive assembly to carry out a sharpening operation upon the cutting edge.Type: GrantFiled: October 17, 2022Date of Patent: January 30, 2024Assignee: Darex LLCInventors: Steven L. Baker, Conner S. MacFarlane, Joseph T. Zachariasen, Daniel T. Dovel, Travis Campbell
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Patent number: 11679517Abstract: 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.Type: GrantFiled: October 14, 2022Date of Patent: June 20, 2023Assignee: Darex LLCInventor: Daniel T Dovel
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Patent number: 11642801Abstract: A utility blade includes a first blade retention feature positioned on a proximal edge of a tang of the utility blade. The proximal edge is angularly offset from a longitudinal axis of the utility blade. The first blade retention feature is associated with an engagement axis parallel to the longitudinal axis of the utility blade. The utility blade is configured to translate along the engagement axis to cause the first blade retention feature to engage with a first blade engagement component of a blade holder. The utility blade further includes a second blade retention feature positioned on a second edge of the tang of the utility blade. The second blade retention feature is positioned along the longitudinal axis of the utility blade and between the first blade retention feature and a distal tip of a cutting portion of the utility blade.Type: GrantFiled: July 1, 2022Date of Patent: May 9, 2023Assignee: Darex, LLCInventor: Daniel T Dovel
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Patent number: 11571826Abstract: 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.Type: GrantFiled: July 1, 2022Date of Patent: February 7, 2023Assignee: DAREX, LLCInventor: Daniel T Dovel
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Patent number: 11554456Abstract: Method and apparatus for sharpening a cutting edge of a cutting tool, such as a kitchen knife. In some embodiments, an abrasive assembly has a frame, a handle, and a cartridge that supports a plurality of abrasive members each having an associated abrasive surface. A rod affixes the abrasive assembly to a base assembly to facilitate movement of the abrasive assembly along the cutting edge of the tool responsive to engagement, by a user, of the user handle. Each abrasive member is configured to be moved, by the user, with respect to the handle to present each abrasive surface in turn. In some cases, the cartridge is rotatable about a cartridge axis that may be parallel or non-parallel to a central axis of the rod.Type: GrantFiled: September 21, 2021Date of Patent: January 17, 2023Assignee: Darex, LLCInventors: Steven L. Baker, Conner S. MacFarlane, Joseph T. Zachariasen, Daniel T. Dovel, Travis Campbell
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Patent number: 11498186Abstract: Method and apparatus for sharpening a cutting edge of a cutting tool, such as a kitchen knife. A fixture secures opposing sides of a blade of the cutting tool and includes a main body and hinged first and second clamping jaws each having a clamping end adapted to compressingly engage a respective side of the blade. A guide coupled to the main body has converging support surfaces to contactingly engage a back edge (spine) of the blade opposite the cutting edge to center the blade along a central plane of the fixture. A retraction mechanism establishes a clamping force upon each of the respective sides of the blade via the clamping jaws. Further embodiments include a base assembly adapted to receive the fixture, and a swing arm style abrasive assembly to carry out a sharpening operation upon the cutting edge.Type: GrantFiled: September 13, 2021Date of Patent: November 15, 2022Assignee: Darex, LLCInventors: Steven L. Baker, Conner S. MacFarlane, Joseph T. Zachariasen, Daniel T. Dovel, Travis Campbell
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Patent number: D944618Type: GrantFiled: July 21, 2020Date of Patent: March 1, 2022Assignee: DAREX, LLCInventors: Joseph Todd Zachariasen, Steven Lee Baker
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Patent number: D977324Type: GrantFiled: April 2, 2021Date of Patent: February 7, 2023Assignee: DAREX LLCInventors: Steven L. Baker, Conner S. Macfarlane, Joseph T. Zachariasen
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Patent number: D985350Type: GrantFiled: April 2, 2021Date of Patent: May 9, 2023Assignee: DAREX LLCInventors: Steven L. Baker, Daniel T. Dovel
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Patent number: D986708Type: GrantFiled: April 2, 2021Date of Patent: May 23, 2023Assignee: Darex LLCInventors: Steven L. Baker, Conner S. Macfarlane, Joseph T. Zachariasen
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Patent number: D987402Type: GrantFiled: April 2, 2021Date of Patent: May 30, 2023Assignee: Darex LLCInventors: Steven L. Baker, Conner S. Macfarlane, Joseph T. Zachariasen
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Patent number: D989591Type: GrantFiled: April 8, 2021Date of Patent: June 20, 2023Assignee: DAREX LLCInventors: Conner S. Macfarlane, Joseph T. Zachariasen
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Patent number: D997675Type: GrantFiled: October 6, 2021Date of Patent: September 5, 2023Assignee: DAREX, LLCInventor: Daniel T. Dovel
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Patent number: D1017360Type: GrantFiled: January 13, 2022Date of Patent: March 12, 2024Assignee: Darex, LLCInventors: Conner S. MacFarlane, Jacob D. Dovel
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Patent number: D1017366Type: GrantFiled: January 12, 2022Date of Patent: March 12, 2024Assignee: Darex, LLCInventors: Conner S. MacFarlane, Jacob D. Dovel
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Patent number: D1017367Type: GrantFiled: January 11, 2022Date of Patent: March 12, 2024Assignee: Darex, LLCInventors: Conner S. MacFarlane, Jacob D. Dovel
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Patent number: D1019321Type: GrantFiled: April 28, 2021Date of Patent: March 26, 2024Assignee: DAREX, LLCInventors: Conner MacFarlane, Joseph Zachariasen
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Patent number: D1022646Type: GrantFiled: April 28, 2021Date of Patent: April 16, 2024Assignee: DAREX, LLCInventors: Conner MacFarlane, Joseph Zachariasen