A knife sharpening device includes a main housing, a first knife sharpening blade having two first sharpening edges, a second knife sharpening blade having two second longitudinal sharpening edges, and a blade replacement arrangement. The blade replacement arrangement includes a first supporting device movably and inclinedly supported by the main housing, a first knife sharpening blade detachably supported on the first supporting device to expose one of the first sharpening edges out of the first supporting device, a second supporting device movably and inclinedly supported by the main housing to and a second knife sharpening blade being detachably supported on the second supporting device to expose one of the second longitudinal sharpening edges out of the second supporting device.

A clamping assembly includes first and second jaws supported above a base in opposed, spaced-apart alignment on opposite sides of a central clamp axis, each jaw having a proximal end portion adjacent the base and an opposite distal end portion, where the jaws are pivotable between an open position and a closed position. A wedge movable along the central clamp axis between the proximal end portions of the pair of jaws in response to moving a handle between a first handle position and a second handle position. A cam assembly between the wedge and the base includes a cam, a follower on the proximal handle end portion, and a spring between the cam and the base. Compressing the spring increases an axial distance between the cam and the wedge.

An electric knife sharpener includes an accommodating unit including a base and an upper cover with an opening slot, a driving unit fixed on the base and including a motor and an eccentric wheel, a linkage unit including a linkage mechanism and an upper fixing seat with two limiting rods thereof pivotally connected to an upper part of the upper fixing seat in a parallel manner, and a grinding unit. The linkage unit has a guide groove located in a pivot end thereof and coupled to two guiding blocks in a through hole of the upper fixing seat. When the linkage mechanism is drivable by the eccentric wheel to move up and down alternatively. The grinding unit includes two sharpening components. One end of each sharpening component is pivotally connected in a groove of the linkage mechanism, so that the two sharpening components form a cross arrangement and opposite openings are formed between the two sharpening components to cross a sharpening accommodating space.

A combination of a sharpening sheath and a knife comprising a blade intended to be stored in the sheath, wherein the sheath comprises a cavity (40) intended to receive the blade and an access opening at one of the ends of the cavity, the sheath comprising, in the lower part thereof, a device for receiving the cutting edge of the blade, characterized in that the sheath comprises, in the upper part thereof, a locking element cooperating with a safety element provided on the back of the blade in order to longitudinally immobilize the knife in the sheath and in that the device for receiving the cutting edge of the blade is borne by an arm rotatably mounted in the sheath, the sheath comprising biasing means acting on the arm to bring the receiving device of the cutting edge of the blade towards the locking element.

A sharpening sheath, designed to receive a knife to be sharpened or stored, comprising a cavity for receiving a blade, an access opening at one end of the cavity, the sheath comprising, preferably in the vicinity of the access opening, an upper part equipped with a device for guiding the back of the blade and a lower part comprising a sharpening device onto which the cutting edge of the blade is intended to be applied when inserting the blade in the sheath or removing it therefrom, characterized in that the sharpening device is supported by an arm comprising a first longitudinal end rotatably mounted on a stand, the arm being returned by recoil means in the direction of the guiding device, and in that the sharpening device is rotatably mounted at a second longitudinal end of the arm.

A sharpening sheath, adapted to receive a knife to be sharpened or stored, comprising a cavity for receiving a blade, an access opening at one end of the cavity, the sheath comprising, preferably in the vicinity of the access opening an upper part provided with a guiding device for the back of the blade and a lower part comprising a sharpening device on which the cutting edge of the blade is intended to be applied when inserting or extracting the blade in the sheath, characterized in that the guide device comprises a V-shaped groove and in that the sharpening device comprises two sharpening elements arranged in a V-shape opposite the groove of the guide device, the sharpening device being mounted so as to be movable relative to the guide device and being returned by return means in the direction of the guide device.

A knife sharpener for the manual sharpening of knives that includes a knife clamp, a honing bar extending in a first direction, an upright support, a base, and a sleeve that is configured to receive a knife having a blade. The knife clamp is configured such that the sleeve is selectively mated within the knife clamp to fixedly secure the knife blade therein along a second direction when the knife clamp is closed.

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.

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.