Abstract: A collapsible hand tool includes a first handle portion, a second handle portion, a first tool element, and a second tool element. The first handle portion and the second handle portion are rotatably coupled by a first pivot element. The first handle portion and the first tool element are rotatably coupled by a second pivot element. The second handle portion and the second tool element are rotatably coupled by a third pivot element. The first tool element and the second tool element are rotatably coupled by a fourth pivot element. The collapsible hand tool can be moved from a collapsed configuration to an open configuration, and from the open configuration to the collapsed configuration.

Abstract: 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.

Abstract: A blade assembly for a folding knife includes a blade and a bearing assembly. The blade includes a cutting portion and a tang portion. The tang portion comprises a pivot opening, a first recess, and a second recess. The bearing assembly is coupled to the blade and includes a first bearing member, a second bearing member, and a sleeve. The first bearing member is disposed within the first recess of the tang portion, the second bearing member is disposed within the second recess of the tang portion, and the sleeve extends through the first bearing member, the second bearing member, and the pivot opening of the tang portion.

Abstract: 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.

Abstract: A folding knife includes a handle and a blade. The handle includes a first side member, a second side member, a connector, and a locking member. The first and second side members are pivotably coupled to the connector such that the first and second side members are pivotable relative to one another. The blade includes a pivot member extending laterally from a surface of the blade, and the pivot member is disposed between the first and second side members. The locking member of the handle is movable between an unlocked position and a locked position. In the unlocked position, the first and second side members of the handle are pivotable relative to one another and can disengage the pivot member of the blade. In the locked position, the first and second side members are restrained from movement relative to one another and engage the pivot member of the blade.

Abstract: 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.

Abstract: 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.

Abstract: A folding knife includes a blade, a handle, an actuation mechanism, and a switch. The handle includes first and second side portions. The blade is pivotably coupled to the first and second side portions. The actuation mechanism is coupled to the handle and is movable between engaged and disengaged configurations. In the engaged configuration, the actuation mechanism prevents relative movement between the first and second side portions of the handle in a first direction. In the disengaged configuration, the actuation mechanism allows relative movement between the first and second side portions of the handle in the first direction. The switch is coupled to the handle and the actuation mechanism. The switch is configured such that moving the switch along a first path retains the actuation mechanism in the engaged configuration and moving the switch along a second path moves the actuation mechanism between the engaged and disengaged configurations.

Abstract: 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.

Abstract: A folding knife can include a handle comprising a side wall having a side surface, a protrusion extending laterally from the side surface of the side wall, a blade, and a linkage assembly pivotably coupling the handle to the blade. The protrusion can have an edge extending laterally from the side surface of the side wall to the side surface of the protrusion. The edge can include a first surface portion and a second surface portion configured as a locking surface. The second surface portion can extend downwardly at an angle relative to the first surface portion. The blade can have a tang including a locking edge, and can be translatable relative to the handle between a storage position and a use position. When the blade is in the use position, the locking surface engages the locking edge to resist movement of the blade in a first direction.

Abstract: In one representative embodiment, a folding knife comprises a blade having a tang portion, a first linking element, a second linking element, and a handle. The blade can be translatable between a storage position and a use position. The first linking element can be pivotably coupled to the tang portion at a first pivot axis and the second linking element can be pivotably coupled to the tang portion at a second pivot axis. The handle can be pivotably coupled to the first and second linking elements at third and fourth pivot axes, respectively. The handle can have a first locking surface configured to resist movement of the blade in a first direction and a second locking surface configured to resist movement of the blade in an opposing second direction.

Abstract: A folding knife can include a handle, a pivot mechanism, a blade retention member, and a replaceable blade. The pivot mechanism has a pivot element and an actuation member. The pivot element extends from one side of the handle. The actuation member is coupled to another side of the handle and is selectively movable without use of a tool to lock/unlock the side portions of the handle relative to each other. A proximal portion of the blade is releasably secured to the blade retention member, and a distal portion of the blade extends beyond the blade retention member. The blade retention member is pivotable relative to the handle between an open configuration in which a cutting edge portion of the blade is exposed from the handle and a closed configuration in which the cutting edge portion of the blade is concealed by the handle.

Abstract: Folding knife embodiments are disclosed herein comprising a blade operable to pivot relative to a handle, between an open position and a closed position, about a pivot axis extending through a tang portion of the blade having at least one locking recess. The knife can have a locking mechanism comprising a rod that extends along the pivot axis through the tang portion and a locking member coupled to the rod which engages the at least one locking recess of the tang portion when the blade is in at least one of the open position or the closed position. The knife can further comprise a push button coupled to the rod, wherein depression of the push button is configured to eject the locking member from the locking recess in the blade, thereby unlocking the blade.

Abstract: 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.

Abstract: A folding knife includes a handle and a blade. The handle includes a first side member, a second side member, a connector, and a locking member. The first and second side members are pivotably coupled to the connector such that the first and second side members are pivotable relative to one another. The blade includes a pivot member extending laterally from a surface of the blade, and the pivot member is disposed between the first and second side members. The locking member of the handle is movable between an unlocked position and a locked position. In the unlocked position, the first and second side members of the handle are pivotable relative to one another and can disengage the pivot member of the blade. In the locked position, the first and second side members are restrained from movement relative to one another and engage the pivot member of the blade.

Abstract: A folding knife includes a handle and a blade. The handle includes a first portion and a second portion. The blade is pivotably coupled to the handle and is pivotable relative to the handle about a pivot axis between a closed position and an open position. The first portion of the handle includes one or more dovetail-shaped projections. The second portion of the handle includes one or more dovetail-shaped slots configured to mate with the one or more dovetail-shaped projections of the first portion of the handle, and thereby restrict relative movement between the first portion and the second portion in a direction parallel to the pivot axis of the blade.

Abstract: Disclosed herein are embodiments of easily disassembled folding knives. In some embodiments, a folding knife includes a blade, a handle including first and second side portions, and a pivot mechanism including 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 end of the pivot mechanism include relatively narrow neck portions with relatively wide, non-circular head portions connected to the neck portions, and the locking elements of a second side of the pivot mechanism include a recess and a corresponding non-circular opening. In some cases, folding knives can be provided with secondary locking mechanisms, liner lock mechanisms, and various other features.