Patents Assigned to Kai U.S.A. Ltd.
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Publication number: 20190143544Abstract: A folding knife includes a handle and a blade rotatably connected to the handle, the blade rotatable between a closed position and an opened position about a blade axis. A finger tab is useable to rotate the blade from the closed position to the opened position, the finger tab rotatably connected to the blade and rotatable between a retracted position and an extended position about a tab axis parallel to the blade axis. A torsion spring biases the finger tab toward the retracted position.Type: ApplicationFiled: November 14, 2017Publication date: May 16, 2019Applicant: KAI U.S.A., Ltd.Inventors: Gustavo Thome Cecchini, James MacNair, Timothy James Galyean
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Patent number: 10071489Abstract: A folding knife includes a lockbar for automatically locking a knife blade in an opened position relative to a handle. A puck attached to the lockbar is configured to engage a tang of the blade to lock the blade in an open position relative to the handle.Type: GrantFiled: August 27, 2015Date of Patent: September 11, 2018Assignee: KAI U.S.A., Ltd.Inventors: James MacNair, Timothy James Galyean, Craig Donald Kemp Green
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Patent number: 9707687Abstract: A knife includes a handle and a blade coupled to the handle so as to be movable between an open position in which the blade extends from the handle, and a closed position, in which the blade is received within the handle. An assisted opening mechanism is operatively coupled between the blade and the handle, and is configured to provide an opening-assist to the blade. An engagement mechanism is also provided, which is switchable between an engaged condition, in which the assisted opening mechanism is enabled, and a disengaged condition, in which the assisted opening mechanism is disabled such that it does not provide an opening assist to the blade.Type: GrantFiled: July 10, 2015Date of Patent: July 18, 2017Assignee: KAI U.S.A., LTD.Inventor: Kenneth J. Onion
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Patent number: 9393682Abstract: A folding knife includes a handle assembly, a blade, and a secondary tool. The blade is pivotally connected to the handle assembly and is configured to pivot from a closed position to an opened position. The secondary tool is pivotally connected to the handle assembly and is configured to pivot from a closed position to an opened position. The secondary tool includes a locking member that traps the blade in the closed position when the secondary tool is in the opened position but allows the blade to pivot to the opened position when the secondary tool is in the closed position.Type: GrantFiled: December 20, 2013Date of Patent: July 19, 2016Assignee: Kai U.S.A., Ltd.Inventors: Craig Donald Kemp Green, James MacNair
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Patent number: 9120234Abstract: A folding knife includes a handle, a blade pivotably connected to the handle, and a lockbar for locking the blade in an open position relative to the handle. The lockbar and the handle are separate pieces. The handle includes a pocket into which at least a portion of the lockbar is fit.Type: GrantFiled: January 16, 2012Date of Patent: September 1, 2015Assignee: Kai U.S.A., Ltd.Inventors: James MacNair, Timothy James Galyean, Craig Donald Kemp Green
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Patent number: 9079320Abstract: A knife includes a handle and a blade coupled to the handle so as to be movable between an open position in which the blade extends from the handle, and a closed position, in which the blade is received within the handle. An assisted opening mechanism is operatively coupled between the blade and the handle, and is configured to provide an opening-assist to the blade. An engagement mechanism is also provided, which is switchable between an engaged condition, in which the assisted opening mechanism is enabled, and a disengaged condition, in which the assisted opening mechanism is disabled such that it does not provide an opening assist to the blade.Type: GrantFiled: June 2, 2006Date of Patent: July 14, 2015Assignee: KAI U.S.A., LTD.Inventor: Kenneth J. Onion
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Patent number: 9038517Abstract: A mandolin slicer having one or more safety features, including a food carrier having one or more guards to protect a user's hand and a food carrier delivery system that helps ensure uniform and predictable movement. The mandolin slicer also provides an ability to safely and effectively cut oversized, long, and awkwardly shaped food articles.Type: GrantFiled: December 6, 2006Date of Patent: May 26, 2015Assignee: KAI U.S.A LTD.Inventors: Tommie Lucas, Neil Hollis Slater, Dennis Lee Epstein
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Publication number: 20140173910Abstract: A folding knife includes a handle assembly, a blade, and a secondary tool. The blade is pivotally connected to the handle assembly and is configured to pivot from a closed position to an opened position. The secondary tool is pivotally connected to the handle assembly and is configured to pivot from a closed position to an opened position. The secondary tool includes a locking member that traps the blade in the closed position when the secondary tool is in the opened position but allows the blade to pivot to the opened position when the secondary tool is in the closed position.Type: ApplicationFiled: December 20, 2013Publication date: June 26, 2014Applicant: Kai U.S.A., Ltd.Inventors: Craig Donald Kemp Green, James MacNair
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Patent number: 8601907Abstract: A process for forming knife blades such as for kitchen or sport knife use comprises injecting a compound including a binder and a metallic powder into a mold having a shape of the knife blade, removing a green blank from the mold and sintering the green blank to produce a sintered blank. The sintered blank is then subjected to a hot-isostatic-pressure to produce a finished blank. An insert may be placed in the mold to impose a desired feature, such as a logo or legend, on the green blank during the molding process. The mold is so configured as to changeably receive the insert so that a first series of blanks can be made using the insert, then a new insert may be emplaced to impose a different feature on succeeding blanks formed in the mold. An edge component may be placed in the mold, around which the blank is injected, to form a compound blade.Type: GrantFiled: September 26, 2005Date of Patent: December 10, 2013Assignee: KAI U.S.A., Ltd.Inventors: Darrell Lewis, Craig Green
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Publication number: 20130081283Abstract: A composite knife blade includes a cutting-edge piece of a first alloy, a back piece of a second alloy different from the first alloy, the cutting-edge piece and the back piece are brazed together at a serpentine joint. The cutting-edge piece has a high Rockwell hardness value, as compared to a hardness of the back piece. A method of manufacture of the knife blade includes fine blanking the back piece of from a sheet of the second alloy, laser cutting the cutting-edge piece from a sheet of the first alloy, and brazing the first piece to the second piece to form a composite blade. The composite blade is then cooled from the brazing temperature to an austenizing temperature of the cutting-edge piece, and quenched, to harden the cutting-edge piece.Type: ApplicationFiled: November 27, 2012Publication date: April 4, 2013Applicant: KAI U.S.A., LTD. DBA KERSHAW KNIVESInventor: KAI U.S.A., LTD. DBA KERSHAW KNIVES
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Patent number: 8291597Abstract: A folding knife includes a handle having a blade channel, a blade rotatably coupled to the handle, and annular blade seals coupled to either side of the blade between the blade and inner surfaces of the blade channel. A locking mechanism having first and second control pins coupled to the blade within the circumference of the blade seal so as to extend toward the first handle element. A lock plate is movably coupled to the handle and engages the first and second control pins when the blade is in the open and closed positions, respectively. A release knob coupled to the lock plate allows a user to move the lock plate to release the blade. A seal positioned between the release knob and the handle seals a space between the release knob and the handle.Type: GrantFiled: January 31, 2007Date of Patent: October 23, 2012Assignee: Kai U.S.A. Ltd.Inventors: Grant W. Hawk, Gavin D. Hawk
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Publication number: 20120180321Abstract: A folding knife includes a handle, a blade pivotably connected to the handle, and a lockbar for locking the blade in an open position relative to the handle. The lockbar and the handle are separate pieces. The handle includes a pocket into which at least a portion of the lockbar is fit.Type: ApplicationFiled: January 16, 2012Publication date: July 19, 2012Applicant: KAI U.S.A., LTD.Inventors: James MacNair, Timothy James Galyean, Craig Donald Kemp Green
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Patent number: 8028873Abstract: A pocket clip is attached at a first end to a tool such as a folding knife. A roller assembly is provided at a second end of the clip with a portion extending toward the tool. The roller assembly includes a ratchet wheel between a pair of elastomeric roller wheels. A pawl engages the ratchet wheel and limits rotation of the roller assembly such that the assembly rotates in one direction around an axis transverse to a longitudinal axis of the tool, and resists rotation in an opposite direction. When the tool is positioned in a user's pocket, a panel of the pocket engages the roller assembly, which rotates substantially freely, permitting the pocket panel to slide easily between the pocket clip and the surface of the tool. However, the roller assembly resists movement of the pocket panel in the opposite direction, holding the tool securely in the pocket.Type: GrantFiled: June 8, 2007Date of Patent: October 4, 2011Assignee: KAI U.S.A., Ltd.Inventors: Grant W. Hawk, Gavin D. Hawk
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Publication number: 20110237168Abstract: A knife sharpening system includes a substantially planar bed defining a first plane, a support base rigidly coupled to the bed and defining a second plane lying at a selected angle with respect to the first plane, first and second end rails are rigidly coupled to respective ends of the bed and extend outward therefrom. A reference surface is provided on an end of the second end rail, defining a plane that lies parallel to the second plane. A bench stone is received on the bed, and supported thereby so that a surface of the bench stone is parallel to the bed, and lies at the selected angle, relative to the second plane. Apertures formed in the first and second end rails form a cradle configured to receive a sharpening steel, and support the sharpening steel at the selected angle, relative to the second plane.Type: ApplicationFiled: June 30, 2010Publication date: September 29, 2011Applicant: KAI U.S.A. LTD., DBA KERSHAW KNIVESInventors: Tommie Lucas, Marc D. Wade
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Patent number: 7979990Abstract: A safety lock mechanism for a folding knife includes a lock plate movably coupled to a handle of the knife for movement along a first direction from an engaged position to a disengaged position, the lock plate biased towards the engaged position. A rocker element is coupled to the lock plate for movement from a locked position to an unlocked position and is configured to prevent translational movement of the lock plate to the disengaged position when the rocker element is in the locked position. A control button coupled to the rocker element allows a user to move the rocker element from the locked position to the unlocked position and to move the lock plate towards the disengaged position to thereby release a blade of the knife.Type: GrantFiled: May 21, 2008Date of Patent: July 19, 2011Assignee: KAI U.S.A., Ltd.Inventors: Grant W. Hawk, Gavin D. Hawk
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Patent number: 7905022Abstract: A folding knife includes a handle element, a blade rotatably coupled to the handle element, and a locking mechanism operatively coupled between the blade and the handle element. The locking mechanism includes first and second pairs of toggles positioned, respectively, on first and second sides of the blade, each pair of toggles being configured to move into a locked position when the blade is rotated to an open position. A handle of the knife may include the handle element and the first and second pairs of toggles.Type: GrantFiled: February 3, 2010Date of Patent: March 15, 2011Assignee: KAI U.S.A., Ltd.Inventors: Grant W. Hawk, Gavin D. Hawk
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Patent number: 7774939Abstract: A folding knife includes a handle having a locking surface, a blade coupled to the handle and configured to rotate, relative to the handle, between a closed position and an open position, and a locking mechanism. The locking mechanism includes a locking post coupled to the blade and configured to move along a slot between a locking and a releasing position, with a biasing member configured to bias the post in the direction of the locking position. The post includes studs positioned above and below the plane of the blade. The studs may be rotatable around the axis, and the slot is positioned such that, when the blade is in the open position, the post may be moved toward the locking position until a face of the stud engages a locking surface of the handle, thereby locking the blade in the open position.Type: GrantFiled: January 28, 2005Date of Patent: August 17, 2010Assignee: KAI U.S.A., Ltd.Inventor: Kenneth J. Onion
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Publication number: 20100132198Abstract: A folding knife includes a handle element, a blade rotatably coupled to the handle element, and a locking mechanism operatively coupled between the blade and the handle element. The locking mechanism includes first and second pairs of toggles positioned, respectively, on first and second sides of the blade, each pair of toggles being configured to move into a locked position when the blade is rotated to an open position. A handle of the knife may include the handle element and the first and second pairs of toggles.Type: ApplicationFiled: February 3, 2010Publication date: June 3, 2010Applicant: KAI U.S.A., Ltd., dba Kershaw KnivesInventors: Grant W. Hawk, Gavin D. Hawk
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Patent number: D633772Type: GrantFiled: December 21, 2010Date of Patent: March 8, 2011Assignee: Kai U.S.A. Ltd.Inventor: Brett G. Behler
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Patent number: RE42906Abstract: A folding knife having a safety lock moveably mounted on a handle of the knife. The safety lock may slide to a locking position to prevent the blade from opening out of the handle by obstructing the path of the blade as the blade is urged from a closed position to an open position. The safety lock also may slide away from the locking position, in which the safety lock does not obstruct the path of the blade.Type: GrantFiled: June 15, 2005Date of Patent: November 15, 2011Assignee: Kai U.S.A., Ltd.Inventor: Kenneth J. Onion