Designs and methods of operation for balitools such as balisongs, butterfly knives, and baliscissors. Two cylindrical locking pins that connect the handles and the tool or blade(s) have semicylindrical protuberances that are trapezoidally arranged. This enables both the use of tapered handles and smooth rotation of the handles with respect to the tool or blade(s) while requiring only a single button assembly to switch between different modes such as pocket mode, in which the handles are locked covering the tool or blade(s); bali mode, in which the tool or blade(s) can swing freely relative to the handles (and, for baliscissors, the scissor blades are locked together); and, for baliscissors, scissors mode, in which each scissors blade is locked to one of the handles.

Designs and methods of operation for balitools such as balisongs, butterfly knives, and baliscissors. Two cylindrical locking pins that connect the handles and the tool or blade(s) have semicylindrical protuberances that are trapezoidally arranged. This enables both the use of tapered handles and smooth rotation of the handles with respect to the tool or blade(s) while requiring only a single button assembly to switch between different modes such as pocket mode, in which the handles are locked covering the tool or blade(s); bali mode, in which the tool or blade(s) can swing freely relative to the handles (and, for baliscissors, the scissor blades are locked together); and, for baliscissors, scissors mode, in which each scissors blade is locked to one of the handles.

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 knife allowing rapid and safe replacement and securement of a blade which can be fixed to a front end of a connecting base of the knife. The connecting base has a rear end that can be connected to a handle, and includes an upper base body, a lower base body, a lock-release member, and a spacer plate that can be located between the upper and lower base bodies and form an engaged-connection groove along with the base bodies therebetween. The engaged-connection groove matches, and enables the insertion therein and engagement therewith, a portion of the blade at or adjacent to the rear end thereof. The lock-release member can be arranged on the connecting base for a user to set the blade into a locked state, in which the blade is securely positioned and cannot be detached, or an unlocked state, in which the blade can be detached.

A knife allowing rapid and safe replacement and securement of a blade which can be fixed to a front end of a connecting base of the knife. The connecting base has a rear end that can be connected to a handle, and includes an upper base body, a lower base body, a lock-release member, and a spacer plate that can be located between the upper and lower base bodies and form an engaged-connection groove along with the base bodies therebetween. The engaged-connection groove matches, and enables the insertion therein and engagement therewith, a portion of the blade at or adjacent to the rear end thereof. The lock-release member can be arranged on the connecting base for a user to set the blade into a locked state, in which the blade is securely positioned and cannot be detached, or an unlocked state, in which the blade can be detached.

A self-defense pocket knife with handle of suitable proportion to be grasped in closed fist and a conveyance system configured for the emergency manual conveyance of a blade from a position for storage to a position for use without requiring the user to appreciably alter or compromise grip upon the handle during the course of such conveyance.

A knife includes a handle defining a slot having a first portion and a second portion, a blade coupled to the handle, and a locking assembly configured to secure the blade within the handle. The locking assembly includes a lock button configured to translate between a first position proximate the first portion of the slot and a second position proximate the second portion of the slot, wherein a spindle is configured to translate within the slot, and a spring arm configured to bias the lock button, wherein the spring arm biases the lock button towards the first position while the spindle is within the first portion of the slot and biases the lock button towards the second position while the spindle is within the second portion of the slot.

A knife includes a handle defining a slot having a first portion and a second portion, a blade coupled to the handle, and a locking assembly configured to secure the blade within the handle. The locking assembly includes a lock button configured to translate between a first position proximate the first portion of the slot and a second position proximate the second portion of the slot, wherein a spindle is configured to translate within the slot, and a spring arm configured to bias the lock button, wherein the spring arm biases the lock button towards the first position while the spindle is within the first portion of the slot and biases the lock button towards the second position while the spindle is within the second portion of the slot.

A folding knife includes a handle, a first liner inside the handle, and a second liner inside the handle and opposed to tire first liner. A blade has a tang and a cutting edge, and the tang of the blade pivotally connects the blade between the first and second liners. The blade has a retracted position in which the cutting edge is inside the handle and a deployed position in which the cutting edge is outside the handle. An actuator is at least partially between the first and second liners. A screw inside the handle has a first end opposed to a second end. The first end of the screw is engaged with the first liner, and the second end of the screw is threadingly engaged with the second liner.

A folding knife includes a handle and a blade pivotably coupled to a distal portion of the handle. The handle includes first side portion including a first locking portion laterally offset from a first main body and second side portion including a second locking portion laterally offset from a second main body. The first side portion is configured to rotate about the pivot axis between a locking configuration where the first locking portion is disposed between the second main body and second locking portion, an opening in the second locking portion and a recess in the first locking portion are aligned, and a locking button is disposed within the recess and opening, thereby restricting relative movement of the first and second side portions, and a release configuration where the locking button is pushed out of the opening, thereby allowing relative movement of the first and second side portions.