A device includes a handle, an apparatus for probing and cutting, and an adaptor. The handle includes one or more triggers. The apparatus for probing and cutting is connectable to the handle and includes an elongated member, a probe, and a blade. The probe and the blade are selectively deployable from the elongate member via activation of the one or more triggers on the handle. The adaptor is configured to selectively connect the apparatus to the handle in a predetermined orientation.

A cutting device includes cutting device includes a housing including an aperture, and a blade cartridge removably coupled to the housing through the aperture. The blade cartridge is configured to hold a plurality of blades. The cutting device further includes a cartridge ejector configured to eject the blade cartridge from the housing.

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 invention relates to a blade assembly (40) comprising a blade support (14) and a blade (17) that can be detachably fastened in the blade support (14), the blade support (14) having a blade seat (16) having a contact face (42) for a first blade face (43), and a second blade face (44) opposite the first blade face (43) being substantially freely accessible, wherein the blade support (14) has a holder (20) for holding the blade (17) in the blade seat (16), comprising first interlocking formation associated with the blade support (14) and second interlocking formation associated with the blade (17) that interlockingly hold the blade (17) at least in a plane parallel to the contact face (42), the interlocking formation being designed such that the blade (17) has a degree of freedom in at least one direction (v.sub.1) in order to be detached from the blade seat (16).

The special feature consists in that the holder (20) has a latch (30) having at least one bolt that is movable between a bolted position and a released position, engages over a region of the second blade face (44), and locks movement in the direction (v.sub.1) of the degree of freedom.

A safety utility knife includes a pair of blades at one end of a handle. The cutting edges of both blades are configured to be shielded by a guard member. The guard member is movable with relation to the blade member.

A multifunctional cutter includes a body and a blade received by the body. The body has an end surface. The end surface extends on a reference plane. The blade has a cutting edge including a first cutting edge portion and a second cutting edge portion. The blade in a use position includes the first and the second cutting edge portions disposed outside of the body. The first cutting edge portion extends arcuately and is concave. The second cutting edge portion extends linearly and is straight. The first cutting edge portion has an end point adjacent to the second cutting edge portion. A tangent line to first the cutting edge portion at the end point intersects with the reference plane. The tangent line and the reference plane defines a first included angle which is less than 90 degrees.

A cutting device is disclosed. The cutting device has a housing assembly, a cutting assembly that is movably disposed in the housing assembly, the cutting assembly being movable in a first axis, between a retracted position and an extended position, and an urging member disposed between the housing assembly and the cutting assembly. The cutting assembly includes a cutting member. The cutting assembly includes an end assembly, which is actuatable in the first axis, and a movable member that is movable relative to the cutting assembly. When the end assembly is actuated, the urging member biases the cutting assembly in the first axis toward the retracted position. When the end assembly is actuated, the end assembly moves the movable member in a second axis that is different from the first axis.

An apparatus is disclosed. The apparatus has a blade retaining member that is elongated in a longitudinal direction, a recess disposed in the blade retaining member, the recess having a first portion extending in the longitudinal direction and a second portion extending in a radial direction, a protruding portion that extends from the blade retaining member in the longitudinal direction, and a protrusion disposed on the protruding portion. The recess is a first attachment portion configured to removably attach the removably-attachable blade cartridge to a first cutting device. The protrusion is a second attachment portion configured to removably attach the removably-attachable blade cartridge to a second cutting device.

A cutting device includes cutting device includes a housing including an aperture, and a blade cartridge removably coupled to the housing through the aperture. The blade cartridge is configured to hold a plurality of blades. The cutting device further includes a cartridge ejector configured to eject the blade cartridge from the housing.

A knife includes a handle body defining an interior blade-slide cavity housing a blade slide carrying a blade with a cutting edge. The blade slide is reciprocated within the blade-slide cavity between a blade-storage position in which the cutting edge is housed within the handle body and at least two blade-protruding positions in which the cutting edge protrudes to the exterior of the handle body, through a forward-end opening, to disparate extents. Blade-slide reciprocation is facilitated by a blade-slide actuator that includes a button reciprocable along an actuator slot defined through the handle body. A handle-body undulated surface defined along the handle body in the vicinity of the actuator slot is configured for selective mechanical interference with a button undulated surface in order to define the at least two blade-protruding positions. A blade-protruding position is temporarily maintained through a user's depression of the button to maintain the selective interference.