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.

A folding knife has a blade pivotably mounted between a first handle scale and a second handle scale and attached to a first pivot post and a second pivot post. A locking mechanism is slidably mounted in the first handle scale and is spring biased into contact with the first pivot post. The locking mechanism is spring biased into contact with a first groove on the first pivot post when the blade is in a closed position thereby preventing the blade from pivoting to the open position, and the locking mechanism is spring biased into contact with a second groove on the first pivot post when the blade is in an open position thereby preventing the blade from pivoting to the closed 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.

A folding knife including a blade assembly; a first plate; a first member; a spacer connected to a first end of the first member; and a first button connected to the first member between the first end of the first member and an opposing second end of the first member; wherein the spacer is configured to be inserted into a slot of the blade assembly to lock the blade assembly into an open orientation with respect to the first plate. The first member is configured to be rotated with respect to the first plate by the first button to allow the blade assembly to be unlocked. The first plate has an arcuate slot; wherein the arcuate slot is located closer to a first end of the first plate than to a second end; and wherein the first button is located between the arcuate slot and the second end.

It is an object of the present invention to provide a folding knife with which, in its open state in which the blade is fully opened from the handle, a protrusion on the blade side can be prevented from hitting the thumb of a user who tries to push the knife down from above with respect to the object to be cut. This is a folding knife comprising a movable piece that is attached to the blade and the 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 that allows the movable piece to rotate with respect to the blade only within a specific rotation angle.

It is an object of the present invention to provide a folding knife with which, in its open state in which the blade is fully opened from the handle, a protrusion on the blade side can be prevented from hitting the thumb of a user who tries to push the knife down from above with respect to the object to be cut. This is a folding knife comprising a movable piece that is attached to the blade and the 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 that allows the movable piece to rotate with respect to the blade only within a specific rotation angle.

Various embodiments of a folding knife are disclosed. In one embodiment, the folding knife includes a handle, a blade including a tip and a tang with the tang having a tang block engagement element, an axle pivotably connecting the blade to the handle, and a lock mechanism. The lock mechanism includes a locking block constrained to move along a fore-aft linear axis, the locking block including a lower engagement surface, an upper engagement surface, and a rear surface. The lock mechanism also includes a biasing device carrier pivotably connected to the handle, a biasing device oriented between the biasing device carrier and the rear surface of the locking block and the biasing device configured to bias the locking block toward the blade tip when the blade is in an open orientation, and at least one handle block engagement element oriented above the upper engagement surface of the locking block.

A folding knife includes a handle, a blade, a pivot element, and a locking mechanism. The handle includes a first side portion and a second side portion disposed on either side of the blade. The pivot element extends from the first side portion and through the opening of the blade such that the blade can pivot about the cylindrical portion from a storage position to a use position. The locking member is movable between a locked position and an unlocked position. In the locked position, relative rotational movement between the first and second side portions of the handle is restricted. In the unlocked position, the first and second side portions of the handle can rotate relative to each other, and the first and second side portions of the handle can be separated when a non-circular opening of the handle aligns with a non-circular portion of the pivot element.

A folding knife includes a handle, a blade, a pivot element, and a locking mechanism. The handle includes a first side portion and a second side portion disposed on either side of the blade. The pivot element extends from the first side portion and through the opening of the blade such that the blade can pivot about the cylindrical portion from a storage position to a use position. The locking member is movable between a locked position and an unlocked position. In the locked position, relative rotational movement between the first and second side portions of the handle is restricted. In the unlocked position, the first and second side portions of the handle can rotate relative to each other, and the first and second side portions of the handle can be separated when a non-circular opening of the handle aligns with a non-circular portion of the pivot element.

A folding knife includes a handle and a blade. The handle includes a first side portion and a second side portion. The blade is pivotably coupled to the handle and pivotable relative to the handle about a pivot axis between a closed position and an open position. The first side portion of the handle comprises a first portion and a second portion, the second portion slidable relative to the first portion in a longitudinal direction that is perpendicular to the pivot axis and parallel to a longitudinal axis of the first portion, between a first position and a second position. When the second portion is in the first position, the first portion is prevented from rotating relative to the second portion and the second side portion, and when the second portion is in the second position, the first portion is rotatable relative to the second portion and the second side portion.