# US 2014/0190018 A1 · Cutting tool with interchangeable blade and method for replacing an AC-blade > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0190018 A1 - Document ID: US20140190018A1 - Status: Published application - Kind: A1 - Application number: 14/143,392 - Filed: 2013-12-30 - Published: 2014-07-10 - Earliest claimed: 2013-01-04 - Assignees: Martor KG - Applicants: Martor KG - Inventors: Florian Segler; Martin Rohrbach - Web page: https://patentgrep.com/patent/US20140190018A1 ## CPC - B26B 5/00: Hand knives with one or more detachable blades - B26B 5/005: {specially adapted for cutting cardboard, or wall, floor or like covering materials} - B26B 9/00: Blades for hand knives - Y10T 29/4973: Replacing of defective part - B26B: HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR (for harvesting A01D; for horticulture, for forestry A01G; for butchering or meat treatment A22; for manufactering or repairing footwear A43D; nail clippers or cutters A45D29/02; kitchen equipment A47J; {vegetable slicers, julienne cutters and similar devices and holders therefor, B26D3/28}; for surgical purposes A61B; for metal B23D; cutting by abrasive fluid jets B24C5/02; plier-like tools with cutting edges B25B7/22; pincers B25C11/02; handles for hand implements, in general B25G; guillotine-type cutters B26D; {perforating by non-mechanical means, e.g. by fluid jet, B26F1/26}; for erasing B43L19/00; for textile materials D06H) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A cutting tool (1), and a method of exchanging an interchangeable blade as well as a cutting tool housing, in particular for severing flat and/or strand-form materials. The cutting tool (1) includes a housing (2), at least one interchangeable blade (8) arranged at a holding portion (6) of the housing (2), and a locking member (40) arranged movably on the housing (2) for locking the blade (8) to the housing (2). The housing (2) has first positively locking elements (23, 24, 26, 28) and the locking member (40) has second positively locking elements (42) which jointly lock the blade (8) in a given position to the housing (2). ## Claims ### Claim at position 1 1-24. (canceled) ### Claim 25 A cutting tool comprising a housing including a holding portion and a plurality of positive-locking elements; a rotational lever mounted pivotably to the housing; a blade arranged at the holding portion of the housing, the blade including a plurality of positive-locking elements; and a locking member coupled with the rotational lever and configured to lock the blade to the housing, the locking member reciprocatingly movable between a first position in which the blade is locked and a second position in which the blade is released, and the locking member having a positive-locking element configured to cooperate with the positive-locking elements of the housing cooperate to lock the blade in a given position to the housing, wherein the positive-locking elements of the blade further cooperate with the positive-locking elements of the housing and the locking member in such a way that substantially no moments are introduced into the rotational lever by virtue of cutting reaction force. ### Claim 26 (depends on 25) The cutting tool of claim 25 wherein the rotational lever includes a blade storage member for receiving a substitute blade. ### Claim 27 (depends on 26) The cutting tool of claim 26 wherein the substitute blade is removable from the blade storage member when the rotational lever is moved to the second position. ### Claim 28 (depends on 25) The cutting tool of claim 25 wherein the rotational lever includes a snap hook with a nose, and the housing includes a holding slot into which the nose of the snap hook engages in the first position of the rotational lever so that the rotational lever is arrested against movement relative to the housing. ### Claim 29 (depends on 25) The cutting tool of claim 25 wherein the blade has a blade head with a cutting edge and a blade foot, and the positive-locking elements of the blade are provided at the blade foot. ### Claim 30 (depends on 29) The cutting tool of claim 29 wherein the blade head has a holding portion configured to be engaged with the housing and a guide portion configured to guide a material to be severed, and the cutting edge is arranged between the holding portion and the guide portion. ### Claim 31 (depends on 30) The cutting tool of claim 30 wherein the guide portion and the holding portion jointly form a guide passage for feeding the material to be severed to the cutting edge. ### Claim 32 (depends on 30) The cutting tool of claim 30 wherein the guide portion and the housing jointly form a guide passage for feeding the material to be severed to the cutting edge. ### Claim 33 (depends on 25) The cutting tool of claim 25 wherein the blade includes an opening, and the positive-locking element of the locking member is a nose configured to engage the opening for locking the blade. ### Claim 34 (depends on 25) The cutting tool of claim 25 wherein the blade includes an opening, and the positive-locking elements of the housing include at least one projection configured to engage the opening. ### Claim 35 (depends on 25) The cutting tool of claim 25 wherein the positive-locking elements of the housing include an abutment, and the blade includes a flat abutment that bears against the abutment of the housing so that cutting reaction forces are transmitted into the housing. ### Claim 36 (depends on 25) The cutting tool of claim 25 wherein the cutting edge is oriented substantially perpendicularly to a longitudinal axis (A) of the cutting tool. ### Claim 37 An interchangeable blade for use with a cutting tool having a housing and a locking member, the interchangeable blade comprising a blade head having a cutting edge and a holding portion configured to engage the housing of the cutting tool; and a blade foot including a hammerhead-like projection and a plurality of openings for cooperating in a positive-locking manner with the housing of the cutting tool or the locking member of the cutting tool. ### Claim 38 (depends on 37) The interchangeable blade of claim 37 further comprising: a guide portion configured to cooperate with the holding portion of the blade head to form a guide passage, wherein the cutting edge is arranged between the holding portion and the guide portion. ### Claim 39 (depends on 37) The interchangeable blade of claim 37 further comprising: a guide portion configured to cooperate with the housing of the cutting tool to form a guide passage, wherein the cutting edge is arranged between the holding portion and the guide portion. ### Claim 40 (depends on 37) The interchangeable blade of claim 37 further comprising: a guide portion configured to cooperate with the holding portion of the blade head and the housing of the cutting tool to form a guide passage, wherein the cutting edge is arranged between the holding portion and the guide portion. ### Claim 41 (depends on 37) The interchangeable blade of claim 37 wherein the hammerhead-like projection and the openings of the blade foot cooperate in a positive-locking manner with the housing of the cutting tool. ### Claim 42 (depends on 37) The interchangeable blade of claim 37 wherein the hammerhead-like projection and the two openings of the blade foot cooperate in a positive-locking manner with the locking member of the cutting tool. ### Claim 43 A cutting tool housing for use with an interchangeable blade, the housing comprising a holding portion configured to receive the interchangeable blade; a plurality of first positive-locking elements; and a locking member arranged movably on the housing for locking the interchangeable blade to the housing, wherein the locking member has a second positive-locking element that cooperates with the first positive-locking elements to jointly lock the blade in a given position to the housing. ### Claim 44 A method of changing an interchangeable blade of a cutting tool, the method comprising: moving a locking member arranged on a rotational lever into a second position to release a first blade; pulling the first blade out of a housing of the cutting tool; inserting a second blade into the housing; and moving the locking member into a first position to lock the second blade in a given position to the housing, wherein the movement of the locking member includes a rotation of the locking member and the rotational lever.