A manual tool capable of unfolding only one work accessory comprises a handle (11, 21), a first work accessory (12, 22) and a second work accessory (13, 23) that are connected to the handle through a pivot and can be unfolded and folded, and an associated accessory (14, 24). The associated accessory can transform the working state from a folding state to an unfolding state. When the first work accessory and the second work accessory are both folded, the associated accessory does not prevent any work accessory from unfolding; and when one of the two work accessories is unfolded and the other one is folded, the associated accessory prevents the other one from unfolding, so as to ensure that only one work accessory can be unfolded during use, thereby eliminating the safety risk caused by unfolding multiple work accessories at the same time.

A locking folding knife includes a handle and a blade pivotally connected to the handle. The blade has a cutting edge and a first position in which at least a portion of the cutting edge is located within the handle and a second position in which a majority of the cutting edge is outside of the handle. A pocket is defined in a first surface of the handle. A through-cut is in the pocket, wherein the through-cut terminates in the pocket at an endpoint. A lock is integral with the handle and extends from the endpoint of the through-cut, wherein the lock engages with a portion of the blade in the second position.

The present invention is to provide a knife configured to receive a blade securely and safely in a handle thereof. The handle is assembled at least from first to third plates. The blade has one end pivotally connected between the second and third plates. The first plate has a switch groove extending in a front-rear direction and configured to position a locking switch. The second plate has a positioning hole corresponding to the switch groove. A positioning member (e.g., a steel ball) is engaged in the positioning hole. When the blade is received in the handle, an engaging hole in the blade corresponds precisely to the positioning hole so that a user can push the locking switch against a top portion of the positioning member, and consequentially for enabling a bottom portion of the positioning member to extend into the engaging hole, thereby fixing the blade and preventing the blade from exposure.

Disclosed herein are embodiments of easily disassembled folding knives. In some embodiments, a folding knife includes a blade and a handle including first and second side portions. The first and second side portions can include respective locking elements which can be used to retain the side portions from lateral separation from one another. In some cases, the locking elements of one side portion include relatively narrow neck portions with relatively wide, non-circular head portions connected to the neck portions, and the locking elements of the other side portion include a recess and a corresponding non-circular opening. In some cases, folding knives can be provided with washers, liner lock mechanisms, and various other features.

Disclosed is a folding knife with safety device, which includes a main knife, a revolving shaft, a first liner plate, a first rivet, a switch lock sheet, a first handle part, a second handle part, a second liner plate and a spacer sleeve. The first liner plate is provided with a resilient lock sheet, an elongated slot, a stopper portion, a first rivet, a second rivet and a third rivet; the switch lock sheet is provided with a first rivet slot, a skidproof rack, a second rivet slot, a labor-saving slot, a locking contact, and a buckle; and the first handle part is provided with an axle hole, a holding slot, a holding hole and a screw hole. The present invention has advantages of simple structure, easy of use and stable performance.

Embodiments provide a liner, a folding knife with button-lock and a folding knife with axis-lock. The liner includes a first liner surface and second liner surface provided parallel to each other, and a connecting part connecting upper ends of the first liner surface and the second liner surface; the first liner surface, the second liner surface, and the connecting part are integrally bent and formed. Specifically, the first liner surface, the second liner surface and the connecting part can be bent and formed integrally by a metal sheet to facilitate the production and processing of the liner. The whole stability and strength of the folding knife can be enhanced when installing the liner onto the folding knife. At the same time, there is no need to use the limiting pin to space the two liner surfaces, such that the structure is simpler and easier to install.

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.

Disclosed is a folding knife with safety device, which includes a main knife, a revolving shaft, a first liner plate, a first rivet, a switch lock sheet, a first handle part, a second handle part, a second liner plate and a spacer sleeve. The first liner plate is provided with a resilient lock sheet, an elongated slot, a stopper portion, a first rivet, a second rivet and a third rivet; the switch lock sheet is provided with a first rivet slot, a skidproof rack, a second rivet slot, a labor-saving slot, a locking contact, and a buckle; and the first handle part is provided with an axle hole, a holding slot, a holding hole and a screw hole. The present invention has advantages of simple structure, easy of use and stable performance.

Disclosed herein are embodiments of easily disassembled folding knives. In some embodiments, a folding knife includes a blade and a handle including first and second side portions. The first and second side portions can include respective locking elements which can be used to retain the side portions from lateral separation from one another. In some cases, the locking elements of one side portion include relatively narrow neck portions with relatively wide, non-circular head portions connected to the neck portions, and the locking elements of the other side portion include a recess and a corresponding non-circular opening. In some cases, folding knives can be provided with washers, liner lock mechanisms, and various other features.

A folding knife including a handle, a pivot axis, and a blade having a cutting edge. The blade is pivotably coupled to the handle such that the blade is pivotable relative to the handle about the pivot axis between a retracted position and an extended position. The cutting edge is exposed in the extended position and a portion of the blade is received within the handle in the retracted position. The folding knife further includes a bearing assembly for facilitating movement of the blade between the retracted position and the extended position. The bearing assembly includes a first bearing recessed within the blade and a second bearing recessed within the handle.