# US 2016/0354941 A1 · Axe and axe head > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0354941 A1 - Document ID: US20160354941A1 - Status: Published application - Kind: A1 - Application number: 15/114,683 - Filed: 2015-01-26 - Published: 2016-12-08 - Earliest claimed: 2014-01-27 - Inventors: Heikki KÄRNÄ - Web page: https://patentgrep.com/patent/US20160354941A1 ## CPC - B26B 23/00: Axes; Hatchets {(attaching of the handles B25G)} - 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) ## Abstract An axe includes an axe head and a handle. The axe head having a first handle attaching structure, which extends from a first side edge of a frame section and which is located on a first axe head side of the axe head and having a second handle attaching structure, which extends from a second side edge of the frame section and which is located on the first axe head side of the axe head. The frame section of the axe head, the first handle attaching structure of the axe head, the second handle attaching structure of the axe head are parts of a one-piece structure formed by plastically deforming and cutting a flat blade stock of generally uniform thickness. ## Claims ### Claim 1 An axe comprising: an axe head and a handle to which one end portion the axe head is mounted, wherein the axe head is formed of a flat blade stock of generally uniform thickness, wherein the axe head having a sharpened cutting edge, wherein the axe head having a frame section comprising a first side face and a second side face, and a first side edge and a second side edge between the first side face and the second side face, wherein the axe head defining a first axe head side on the side of the first side of the frame section and a second axe head side on the second side face of the frame section, wherein the centre of gravity of the axe is located on a centre-of-gravity plane, which is parallel with a blade plane on which the sharpened cutting edge of the axe head is located and which is located at a distance from the blade plane and which is parallel with a normal working motion plane of the axe, wherein the sharpened cutting edge of the axe head and the centre of gravity of the axe are arranged to cooperate when the sharpened cutting edge of the axe head hits the wood and the sharpened cutting edge of the axe head penetrates into the wood such that at least some of the impact force of the axe head is converted into a rotational motion of the axe head and a motion of the axe head in a curvilinear trajectory, and wherein: the axe head having a first handle attaching structure, which extends from the first side edge of the frame section of the axe head and which is located on the first axe head side of the axe head, the axe head having a second handle attaching structure, which extends from the second side edge of the frame section of the axe head and which is located on the first axe head side of the axe head, the frame section of the axe head, the first handle attaching structure of the axe head, the second handle attaching structure of the axe head are parts of a one-piece structure formed by plastically deforming and cutting said flat blade stock of generally uniform thickness, the first handle attaching structure being provided with an first opening that is penetrated by the handle, and the second handle attaching structure being provided with a second opening that is penetrated by the handle . ### Claim 2 (depends on 1) The axe according to claim 1, wherein: the frame section of the axe head being essentially flat so that the first side face and the second side face of the frame section of the axe head being parallel, the first handle attaching structure being essentially flat, and the first handle attaching structure extends essentially perpendicularly from the first side edge of the frame section of the axe head in relation to the frame section of the axe head. ### Claim 3 (depends on 1) The axe according to claim 1, wherein: the first handle attaching structure being provided with a first stop element arranged to hit the wood during the rotational motion of the axe head and the motion of the axe head in a curvilinear trajectory, the first stop element being essentially flat and being a part of the one-piece structure formed by plastically deforming and cutting said flat blade stock of generally uniform thickness, and the first stop element being provided on the second axe head side of the axe head. ### Claim 4 (depends on 1) The axe according to claim 1, wherein: the second handle attaching structure being provided with a second stop element arranged to hit the wood during the rotational motion of the axe head and the motion of the axe head in a curvilinear trajectory, the second stop element being essentially flat and being a part of the one-piece structure formed by plastically deforming and cutting said flat blade stock of generally uniform thickness, and the second stop element being provided on the second axe head side of the axe head . ### Claim 5 (depends on 1) The axe according to claim 1, wherein: the attaching section of the axe head being provided with a third stop element arranged to hit the wood during the rotational motion of the axe head and the motion of the axe head in a curvilinear trajectory, the third stop element being essentially flat and being a part of the one-piece structure formed by plastically deforming and cutting said flat blade stock of generally uniform thickness, the third stop element ext extends perpendicularly in relation to the attaching section of the axe head, and the third stop element being provided on the second axe head side of the axe head . ### Claim 6 (depends on 1) The axe according to claim 1, wherein: the sharpened cutting edge being formed in a cutting portion that is a part of the one-piece structure formed by plastically deforming and cutting said flat blade stock of generally uniform thickness, and the cutting portion extends in an angle and/or in an curved configuration in relation to the attaching section of the axe head on the second axe head side of the axe head. ### Claim 7 (depends on 1) The axe according to claim 1, wherein: the first opening having a different shape and/or dimensions than the second opening. ### Claim 8 (depends on 1) The axe according to claim 1, wherein: a sleeve such as a polymer sleeve, which is at least partly fitted around the handle, and which is arranged at least partly between the first handle attaching structure and the second handle attaching structure, and the sleeve being fastened to the handle by means of fastening means such as external fastening means. ### Claim 9 (depends on 1) The axe according to claim 1, wherein: the end portion of the handle at which the axe head is mounted defines an attaching portion of the handle and the opposite portion of the handle defines a grab portion of the handle, the cross-sectional of the handle tapers between the first opening in first attaching structure of the axe head and the second opening in the second attaching structure of the axe head towards the grab section of the handle, and the cross-sectional of the first opening in first attaching structure of the axe head being smaller than the cross-sectional of the second opening in the second attaching structure of the axe head. ### Claim 10 (depends on 1) The axe according to claim 1, wherein: the first opening being elliptic in shape and by the second opening is preferably elliptic in shape, and an imaginary extension the major axis of at least one of the first opening and the second opening cuts the blade plane at the sharpened cutting edge of the axe head. ### Claim 11 An axe head wherein the axe head is formed of a flat blade stock of generally uniform thickness, the axe head comprising: a sharpened cutting edge, wherein the axe head has a frame section including a first side face and a second side face, and a first side edge and a second side edge between the first side face and the second side face, wherein the axe head defines a first axe head side on the side of the first side of the frame section and a second axe head side on the second side face of the frame section, wherein the axe head has a first handle attaching structure, which extends from the first side edge of the frame section of the axe head and which is located on the first axe head side of the axe head, wherein the axe head has a second handle attaching structure, which extends from the second side edge of the frame section of the axe head and which is located on the first axe head side of the axe head, wherein the frame section of the axe head, the first handle attaching structure of the axe head, the second handle attaching structure of the axe head are parts of a one-piece structure formed by plastically deforming and cutting said flat blade stock of generally uniform thickness, wherein the first handle attaching structure being provided with an first opening for a handle, and wherein the second handle attaching structure being provided with a second opening for the handle. ### Claim 12 (depends on 11) The axe head according to claim 11, wherein: the frame section of the axe head being essentially flat so that the first side face and the second side face of the frame section of the axe head being parallel, the first handle attaching structure being essentially flat, and the first handle attaching structure extends essentially perpendicularly from the first side edge of the frame section of the axe head in relation to the frame section of the axe head. ### Claim 13 (depends on 11) The axe head according to claim 11, wherein: the first handle attaching structure being provided with a first stop element arranged to hit the wood during the rotational motion of the axe head and the motion of the axe head in a curvilinear trajectory, the first stop element being essentially flat and being a part of the one-piece structure formed by plastically deforming and cutting said flat blade stock of generally uniform thickness, and the first stop element being provided on the second axe head side of the axe head. ### Claim 14 (depends on 11) The axe head according to claim 11, wherein: the second handle attaching structure being provided with a second stop element arranged to hit the wood during the rotational motion of the axe head and the motion of the axe head in a curvilinear trajectory, the second stop element being essentially flat and being a part of the one-piece structure formed by plastically deforming and cutting said flat blade stock of generally uniform thickness, and the second stop element being provided on the second axe head side of the axe head. ### Claim 15 (depends on 11) The axe head according to claim 11, wherein: the attaching section of the axe head being provided with a third stop element arranged to hit the wood during the rotational motion of the axe head and the motion of the axe head in a curvilinear trajectory, the third stop element being essentially flat and being a part of the one-piece structure formed by plastically deforming and cutting said flat blade stock of generally uniform thickness, the third stop element extends perpendicularly in relation to the attaching section of the axe head, and the third stop element being provided on the second axe head side of the axe head. ### Claim 16 (depends on 11) The axe head according to claim 11, wherein: the sharpened cutting edge being formed in a cutting portion that is a part of the one-piece structure formed by plastically deforming and cutting said flat blade stock of generally uniform thickness, and the cutting portion extends in an angle and/or in an curved configuration in relation to the attaching section of the axe head on the second axe head side of the axe head. ### Claim 17 (depends on 8) The axe head according to claim 8, wherein: by the first opening has different shape and/or dimensions than the second opening. ### Claim 18 (depends on 8) The axe head according to claim 8, wherein: the first opening being elliptic in shape and by the second opening is preferably elliptic in shape, and an imaginary extension the major axis of at least one of the first opening and the second opening cuts the sharpened cutting edge of the axe head or an imaginary extension of the sharpened cutting edge of the axe head.