A knife is provided that includes a replaceable blade element. The knife employs a blade carrier that is fixedly interconnected to or foldable with respect to a handle. The blade carrier selectively receives the replaceable blade element that is locked into the blade carrier by way of a blade release mechanism by biasing an associated spring that is further associated with a blade release button. The replaceable blade element is designed to be inserted within the blade carrier quickly, easily, and safely. The replaceable blade element may abut an internal guide surface during insertion.

A utility knife includes a body having a front end and a rear end opposite the front end. A blade holder, supported by the body, is moveable relative to the body, to move a blade between an extended position and a retracted position. The blade extends through a blade aperture when in the extended position. The blade aperture is sized to receive a hook attached to the blade of a tape measure.

A roof cutter and a method of cutting a roof is provided. The roof cutter includes a base that is movable between a retracted configuration and a cutting configuration. In the retracted configuration, the blade is displaced from the roof. In the cutting configuration, the blade is positioned so as to facilitate cutting of the roof. The roof cutter includes a stop assembly and an engagement member that is configured to engage with the stop assembly when the base is in the cutting configuration, thereby establishing a maximum cutting depth. A dampening mechanism softens impacts associated with the blade moving to the cutting depth and absorbs vibrations associated with cutting the roof at the cutting depth. An adjustment assembly is configured to selectively adjust the cutting depth and/or to selectively restrain the base in the retracted configuration, thereby preventing the blade from cutting the roof.

An auto-retracting utility cutter includes a cutter body, a handle and an access door enabling top loading of replaceable blades into an slidable internal blade carriage. The blade carriage is actuated when sufficient force is applied to a linkage connected to the blade carriage which overcomes the inertia of the linkage but is resistant to casual squeezing and prevents injury from inadvertent deployment of the blade.

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.

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.

A utility knife includes a handle base and a neck connected to the handle base for pivotal movement relative to the handle base between a closed position and an open position. The knife also includes a utility blade holder slidingly carried by the neck for sliding movement relative to the neck between a retracted position and an extended position. A utility blade is carried by the blade holder such that movement of the utility blade holder between its extended and retracted positions moves the utility blade between an exposed position in which a cutting edge of the blade is exposed, and a protected position in which the cutting edge of the blade is protected by the neck.

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.

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.

A utility knife is provided, including: a housing, defining an operation compartment and a storage compartment; a blade holder, movably received within the operation compartment; a blade storing carrier, movably received within the storage compartment, including a receiving portion for receiving at least one spare blade and a grip portion; and a locking mechanism, including a base body, a movable member, a first engaging member and a second engaging member, the base body being disposed to the housing, the movable member being attached to the base body and movable between a locking position and a release position, the first engaging member being disposed on and movable with the movable member, the first engaging member and the second engaging member are releasably engaged with each other so that the blade storing carrier is detachable from the housing.