A utility knife including a handle, a blade, a first blade holder, and a spare blade holder. The spare blade holder is pivotal with respect to the handle between an open position where the recess is exposed to allow a spare blade to be removed from the spare blade holder and a closed position where the recess is within a slot of the handle to inhibit removal of the spare blade from the spare blade holder. The spare blade holder further including a cam surface and the cam surface of the spare blade holder engages a cam surface of the handle when the spare blade holder is in the closed position to urge the spare blade holder in a direction from a first longitudinal side of the handle toward a second longitudinal side of the handle to allow the first blade holder to pivot between extended and folded positions.

A foldable cutting device having a handle component and a blade holder component pivotally connected to the handle component. The foldable cutting device is movable between a closed position, in which the blade holder rests within a chamber in the handle component, and an open position, in which the blade holder pivots out from the handle. The foldable cutting device may have a release mechanism for assisting in the opening of the blade holder. The release mechanism may utilize tension components to assist in biasing the blade holder towards the open position.

A foldable cutting device having a handle component and a blade holder component pivotally connected to the handle component. The foldable cutting device is movable between a closed position, in which the blade holder rests within a chamber in the handle component, and an open position, in which the blade holder pivots out from the handle. The foldable cutting device may have a release mechanism for assisting in the opening of the blade holder. The release mechanism may utilize tension components to assist in biasing the blade holder towards the open position.

A folding knife includes a movable piece that is attached to a blade and a handle so as to be relatively rotatable by a specific rotation angle with respect to the blade, and to rotate with respect to the handle together with the blade outside the specific rotation angle; a notch or a recess formed at a position near a rotating shaft portion on the back side of the blade; a protrusion that is formed at a position on the movable piece and in a shape corresponding to the notch or recess of the blade; and a rotation mechanism including the rotating shaft portion that allows the movable piece to rotate with respect to the blade only within a specific rotation angle.

A folding knife includes a movable piece that is attached to a blade and a handle so as to be relatively rotatable by a specific rotation angle with respect to the blade, and to rotate with respect to the handle together with the blade outside the specific rotation angle; a notch or a recess formed at a position near a rotating shaft portion on the back side of the blade; a protrusion that is formed at a position on the movable piece and in a shape corresponding to the notch or recess of the blade; and a rotation mechanism including the rotating shaft portion that allows the movable piece to rotate with respect to the blade only within a specific rotation angle.

A blade mounting bracket includes a blade mounting part and a handle connecting part. A blade mounted on the blade mounting bracket defines a strip-shaped hole. The strip-shaped hole includes a mounting section and a tightening section. A width of the mounting section is greater than a width of the tightening section. The blade mounting part includes a base and a fixing piece connected with the base. An upper surface of the fixing piece is matched with the mounting section. An upper portion of the fixing piece extends downwards to connect with the base. Grooves are formed between the upper surface of the fixing piece and the base. The fixing piece includes a fixing block matched with the mounting section. The grooves and the fixing block fix the blade in a plane in which the blade is located.

A blade mounting bracket includes a blade mounting part and a handle connecting part. A blade mounted on the blade mounting bracket defines a strip-shaped hole. The strip-shaped hole includes a mounting section and a tightening section. A width of the mounting section is greater than a width of the tightening section. The blade mounting part includes a base and a fixing piece connected with the base. An upper surface of the fixing piece is matched with the mounting section. An upper portion of the fixing piece extends downwards to connect with the base. Grooves are formed between the upper surface of the fixing piece and the base. The fixing piece includes a fixing block matched with the mounting section. The grooves and the fixing block fix the blade in a plane in which the blade is located.

A folding knife having an elongated handle defining a finger hole proximate one end of the handle and a blade having a cutting edge and pivotally connected to the handle and configured to move with respect to the handle between a retracted position and an extended position. The blade is configured such that a portion of the cutting edge extends into the finger hole upon the blade being in the retracted position. A blade cover is connected to the handle and is configured to move between an operable position and a withdrawn position. A spring is configured to contact and automatically move the blade cover from the operable position towards the withdrawn position, whereby, as the blade reaches the retracted position, the blade cover is automatically moved to the operable position and covers the portion of the cutting edge of the blade extending into the finger hole, and upon the blade moving towards the extended position, the spring automatically moves the blade cover from the operable position towards the withdrawn position.

A multi-function tool includes a first handle, a second handle, a first cutting insert, and a second cutting insert. The first handle is pivotally coupled to the second handle at a pivoting axis. The first handle and the second handle move between an open position and a closed position relative to each other. A first insert surface is formed on the first handle, and a second insert surface is formed on the second handle. The first cutting insert includes a front side, a rear side configured to interface with the first insert surface, a left side including a flat anvil surface, and a right side including a cutting edge. A second cutting insert includes a front side, a rear side configured to interface with the second insert surface, a left side including a flat anvil surface, and a right side including a cutting edge.

A multi-function tool includes a first handle, a second handle, a first cutting insert, and a second cutting insert. The first handle is pivotally coupled to the second handle at a pivoting axis. The first handle and the second handle move between an open position and a closed position relative to each other. A first insert surface is formed on the first handle, and a second insert surface is formed on the second handle. The first cutting insert includes a front side, a rear side configured to interface with the first insert surface, a left side including a flat anvil surface, and a right side including a cutting edge. A second cutting insert includes a front side, a rear side configured to interface with the second insert surface, a left side including a flat anvil surface, and a right side including a cutting edge.