Abstract: A utility knife has a housing in which a particle flow cross section is substantially constant or increases in a flow direction of particles from an inlet of the housing into an interior of the housing at an end of the housing to an outlet of the housing. A blade assembly has a blade with a cutting edge and is movable relative to the housing between a stowed position and an operating position for a cutting operation. A first actuating part and a second actuating part mounted movable relative to the first actuating part move of the blade assembly between the stowed and operating positions. First and second slotted links form a four-point linkage with the first and second actuating parts.

Abstract: A utility knife has a housing having a longitudinally open front end, a blade assembly including a blade and movable in the housing between a front end position and a rear end safety position, and a lever pivoted on the housing. Two links each have one end pivoted on the blade assembly and an opposite end pivotal on the lever so as to pivotally interconnect the blade assembly and the lever for relative movement of the blade assembly and the housing between the rear end safety position with the blade inside the housing and the front end position with the blade projecting longitudinally forward from the front end of the housing. A spring is connected to the links urges the blade assembly into the rear end safety position.

Abstract: Disclosed herein are packagings for cutting blades, multiple packagings connected to each other, methods for using and producing such packagings, and a method for packaging cutting blades in such packagings. One such packaging comprises a substantially flat base and cover layer made of a first and a second packaging material respectively, a blade receptacle between the two layers, and a cover of the blade receptacle formed in the cover layer. The first and second packaging material are made primarily of cardboard. The packaging materials each have a first and a second rigidity in corresponding primary directions, wherein a cutting edge of a blade is disposed in the packaging parallel to at least one of the primary directions. A multiple packaging made of such individual packagings with a separation region between two individual packagings comprises a planned parting line in a layer and a hinge line in the other layer.

Abstract: A utility knife has a housing, a blade holder movable between a front position and a rear position in the housing, and first and second return formations of which one is mounted on the housing and the other on the blade holder. The first and second return formations urge the blade holder into the rear position relative to the housing in at least one region of movement of the blade holder. The first return formation includes a spring and a movable element connected to the spring and urged thereby in a travel direction of the movable element. The second return formation includes a counter surface engageable with the movable element.

Abstract: A knife has two housing parts as well as a blade and a blade support. The support has a blade seat having a contact face normally engaging a blade face with the opposite blade face being freely accessible. The parts are movable between an operating position with the blade projecting and a stowed position with the blade wholly contained. A holder on the blade support secures the blade in the seat via interlocking formations that hold the blade against the contact face but that are so constructed that the blade has a degree of freedom in at least one direction in order to be detached from the blade seat. A latch on the holder has a bolt movable between a bolted position detachably fitted in the seat and holding the blade there and a released position out of the seat and allowing the blade to be replaced.

Abstract: The invention relates to a utility knife, comprising a housing (11) and a blade holder (13) that is movable between a rear position and a cutting position in the housing (11), comprising a return device (34), which can load the blade holder (13) into the rear position relative to the housing. The special feature is that the return device (34) is mounted on the housing (11) or the blade holder (13) and comprises a spring (35), wherein the return device (34) comprises a movable element which is connected to one end of the spring and is urged in a travel direction by this one end of the spring, wherein the movable element interacts with the blade holder (13) and the housing (11) and the blade holder (13) is urged into the rear position in at least one region of movement of the blade holder (13) .

Abstract: The invention relates to a utility knife (10) comprising a housing that has a blade assembly (16), having a blade (23) having at least one cutting edge (35), the blade assembly (16) and/or a blade guard being movable relative to the housing between at least one stowed position and at least one operating position, the housing having at least one opening (22, 24). The special feature consists, inter alia, in that a particle flow cross section of the housing remains substantially constant or increases in the flow direction of the particles from an inlet (36) for the particles (34) into an interior (25) at a front end (18) of the housing to an outlet (37) for the particles (34).

Abstract: 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 (v1) in order to be detached from the blade seat (16).

Abstract: The invention relates to a utility knife comprising a first part (11) and comprising a second part (12) that is mounted so as to be movable relative to the first part (11), and comprising a blade assembly having a blade (16), and comprising an actuator having at least two links (17, 18) that hingedly interconnect the blade assembly and the first part (11) such that a mechanical linkage is formed that is movable by relative movement between the first part (11) and the second part (12), between at least one rear end position and at least one front end position, wherein the second part (12) is indirectly or directly movably connected to one of the links (18) or to the blade assembly in order to move the mechanical linkage.