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.

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.

A knife sharpener for the manual sharpening of knives that includes a knife clamp member having first and second clamping members, a guide member that defines upper and lower guide members, and a base member. Each upper and lower guide member includes a plurality of apertures sized and shaped for receiving a guide rod that includes a sharpening stone. The knife clamp member further includes embodiments assuring the knife blade is held securely and positioned between the first and second clamping members in the same position in which the knife blade was installed the last time it was sharpened.

This invention is about a fish fillet knife sheath with sharpening function, inside the sheath body features a storage chute, inside the storage chute features a sliding in sharpening rod, a pop-up pressure spring located between the front end of the storage chute and the sharpening rod, in the rear of the sheath body features a locking lever with a hinge, the rear part of the locking lever features a locking block which extrudes towards the sharpening rod, the front lateral side of the locking block features a locking slope oblique towards the sharpening rod from the front to the back; the rear part of the sharpening rod features a compaction slope which is coordinated with the locking slope, the sheath body features a cam switch via the switch pin with a hinge, the cam switch features a locking pressure spring. This invention is simple, convenient, beautiful and hands protective.

Apparatus and method for sharpening a cutting tool, such as but not limited to a knife. A sharpener has a housing with a sharpener stage adapted to facilitate a sharpening operation upon the cutting tool responsive to retraction, by a user, of the cutting tool along a longitudinal drawing axis. A tiltable sharpening mechanism is disposed within the housing adjacent the sharpening stage. The tiltable sharpening mechanism has a central body that is rotatable about a transverse rotational axis nominally orthogonal to the longitudinal drawing axis. The rotatable central body supports at least a first sharpening element. In some cases, the central body supports a pair of intersecting sharpening elements. A biasing member exerts a biasing force to urge the central body of the tiltable sharpening mechanism to a neutral position within the housing. The central body can be locked in neutral, positive rake and negative rake positions.

A knife sharpener may include a suction cup, a main base, a sharpening set, a first cover, a control handle, and an upper cover. The suction cup is adapted to create vacuum so as to enable the knife sharpener to be attached on a working surface, and a lever extends from a top surface of the suction cup. The main base has different heights of a first portion and a second portion thereon to form a stepped shape. The sharpening set comprises two pieces of sharpening stones which are coupled together to form a sharpening space therebetween. The first cover having appropriate transparency is a board body. The control handle has a second through hole axially penetrating through a central portion thereof, and an abutting block is horizontally extended from the connecting portion to protrude from a rear end of the control handle.

A knife sharpener may include a suction cup, a main base, a sharpening set, a first cover, a control handle, and an upper cover. The suction cup is adapted to create vacuum so as to enable the knife sharpener to be attached on a working surface, and a lever extends from a top surface of the suction cup. The main base has different heights of a first portion and a second portion thereon to form a stepped shape. The sharpening set comprises two pieces of sharpening stones which are coupled together to form a sharpening space therebetween. The first cover having appropriate transparency is a board body. The control handle has a second through hole axially penetrating through a central portion thereof, and an abutting block is horizontally extended from the connecting portion to protrude from a rear end of the control handle.

An acute angle blade sharpening apparatus and method for sharpening blades is configured to sharpen the edge and bevel of a blade at the specific acute angles between 21° and 23°, or about 22° and 23°. The apparatus has a base member forming multiple elongated depressions oriented at 22° and 23°. Multiple elongated sharpening members are fixedly mounted in the depressions. The blade is oriented perpendicular to the first side of the base member and drawn against the sharpening members, to engage at the desired 22° and 23° sharpening angles. A leveling instrument attaches to the blade to verify the blade is oriented at the desired angles. A leveling instrument cavity stores the leveling instrument and fastener. Springs retain the sharpening members in the cavity of the base member when not in use. A clamp fastens the base member to a mounting surface for enhanced stability.

An acute angle blade sharpening apparatus and method for sharpening blades is configured to sharpen the edge and bevel of a blade at the specific acute angles between 21° and 23°, or about 22° and 23°. The apparatus has a base member forming multiple elongated depressions oriented at 22° and 23°. Multiple elongated sharpening members are fixedly mounted in the depressions. The blade is oriented perpendicular to the first side of the base member and drawn against the sharpening members, to engage at the desired 22° and 23° sharpening angles. A leveling instrument attaches to the blade to verify the blade is oriented at the desired angles. A leveling instrument cavity stores the leveling instrument and fastener. Springs retain the sharpening members in the cavity of the base member when not in use. A clamp fastens the base member to a mounting surface for enhanced stability.

Systems, devices, and methods for providing different types of sharpeners for knives with a removable angle gauge to determine which knife sharpener to use for individual knives. The sharpener can include three angle sizes of honing ceramic dual wheel sharpeners, three angle sizes of edge shaving diamond coated dual wheel sharpeners, and three angle sizes of new edge blade tungsten rod sharpeners. One angle size can cover approximately 13 degrees to approximately 15 degrees, and include 14 degrees. An angle size can cover approximately 16 degrees to approximately 18 degrees and include 17 degrees. And a third angle size can cover approximately 19 degrees to approximately 21 degrees and include 20 degrees. The removable angle gauge can be a generally rectangular plate with a plurality of grooves, that cover an approximately 13 degree groove, an approximately 14 degree groove, an approximately 15 degree groove, an approximately 16 degree groove, an approximately 17 degree groove, an approximately 18 degree groove, an approximately 19 degree groove, an approximately 20 degree groove, and an approximately 21 degree groove.