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 with a locking mechanism is provided. The folding knife includes a locking spring that interfaces with a recess in the blade to bias the blade from being pivoted out of the handle. A button interfaces with the locking spring to actuate the locking spring interfacing with the blade.

A knife includes interchangeable blades that are secured within the handle using a locking mechanism having a lock pin disposed between the distal end of the lock bar and the blade. In addition to strengthening the lock, the lock pin also serves as a safety catch n the unlikely event of lock failure, resisting rotation of the blade into a position in which the user's fingers would be cut.

The present invention provides a labyrinth foldable knife, which comprises a knife handle and a knife body, wherein a labyrinth groove is provided in the knife handle, a key device being arranged in the labyrinth groove; the key device consists of a flange, a key, a spring, a sleeve and a round head screw, the key passes through the flange, the spring and the sleeve; and by means of the connection between a threaded hole and a threaded section, the key device is buckled in the labyrinth groove and can move back and forth. The present invention may be used as a foldable knife, and may also be used as a labyrinth toy for exercising a hand, thereby realizing the multi-functionalization of the foldable knife.

A utility knife with a locknut includes a case, a blade holder, a blade, a movable pushbutton and a locking device. A blade extension/retraction opening is formed at a front end of the case and provided for the blade to extend or retract, and a movable chute is formed on a side of the case and provided for the movable pushbutton to move. The blade is correspondingly installed in the case by the blade holder, the blade controls its extension and retraction in the blade extension/retraction opening by the movable pushbutton. The locking device includes a locking rod and an adjusting device and uses the adjusting device to adjust the locking rod and lock the blade.

The present disclosure provides a folding knife. The knife according to the present disclosure includes several components. Under a preferred disassembly operation, the knife can be disassembled into the following parts: a connection pin, a first frame member of a handle of the knife, a second frame member of a handle of the knife, a latch at the end of the handle, a back frame member between the first and second frame members of the handle, a pivot retainer on the second frame member, and a blade of the knife.

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.

This disclosure describes systems, methods, and apparatus for a locking folding knife having a handle lock and a safety switch arranged around and rotatable around a pivot axis of the knife. In an engaged position the switch overlaps at least a portion of the handle lock and prevents it from moving into an unlocked position. A spring, such as a wire form spring, can be arranged within a pocket of the switch, and when the switch is moved between engaged and disengaged positions the spring can be compressed generating a rotational bias on the switch urging the switch toward either the engaged or disengaged position.

A modular tool apparatus includes at least one handle, at least one utility tool, at least one attachment channel, at least one pivot pin, and at least one lever. The pivot pin includes a D-shaped cross section and rotatably connected to the handle thus enabling the foldable connection between the handle and the utility tool. The lever is terminally connected to the pivot pin and allows the pivot pin to be configured in between a locked position and an unlocked position. The attachment channel laterally traverses into the utility tool as the attachment channel is rotatably engaged around the pivot pin. The utility tool is foldably attached to the handle through the attachment channel and the pivot pin, wherein the D-shaped cross section of the pivot pin and a matching profile of the attachment channel allow the utility tool to be installed or removed from the pivot pin.