EP4543643A1 - Instrument tranchant et methode d'obtention - Google Patents
Instrument tranchant et methode d'obtentionInfo
- Publication number
- EP4543643A1 EP4543643A1 EP22751407.2A EP22751407A EP4543643A1 EP 4543643 A1 EP4543643 A1 EP 4543643A1 EP 22751407 A EP22751407 A EP 22751407A EP 4543643 A1 EP4543643 A1 EP 4543643A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ellipsoid
- plane
- blade
- cutting instrument
- cutting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B3/00—Hand knives with fixed blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B3/00—Hand knives with fixed blades
- B26B3/02—Table-knives
Definitions
- the present invention relates to a one-piece cutting instrument, and to a method for obtaining such a cutting instrument.
- Cutting instruments such as knives, machetes or sabers
- They have a wide variety of shapes, dimensions and uses. They can be used as cooking utensils, butchering utensils, hunting utensils, as utility tools, or even as combat or sporting weapons.
- Cutting instruments and more particularly knives, are generally divided into two large categories: so-called “straight” instruments, those whose blade is fixed, and so-called “closing”, folding or retractable instruments, those whose blade is movable relative to the handle.
- a straight cutting instrument for example a knife
- a straight cutting instrument for example a knife
- It comprises two distinct elements, fixed to each other in an immovable manner, namely: a body, a first portion of which constitutes the blade, and a second portion of which constitutes the tang, and a handle or elements of a handle, which is fixed on the tang, by embedding, by gluing or by the use of screws or rivets.
- the blade can adopt different shapes and have different dimensions, which are generally adapted to the final destination, the final use of the cutting instrument.
- the blade includes a back, and a grind, the end of which forms the cutting edge, which can be smooth, notched, or mixed, namely with a smooth part and a notched part.
- the blade is planar and symmetrical. It extends from the handle in continuity with the plane of symmetry of the handle, in other words it extends in the plane of symmetry of the handle.
- the blade generally has two faces which are symmetrical and which have the same profile.
- the blade can adopt a V shape, a biconcave shape or biconvex.
- the blade can also be asymmetrical, its faces not having the same profile; it can include, for example, a so-called “scissor” grinding.
- document FR3080312 describes a straight or closing knife, comprising an oval or ovoid blade, the two faces of which are symmetrical and flat, extending in continuity with the plane forming the tang, which receives plates forming a handle in the shape of a rugby ball.
- the cutting instrument can usually be accompanied and slipped into a protective cover or sheath, in order to protect the tip and the cutting edge of the blade.
- a straight cutting instrument is generally obtained by a long and complex manufacturing process, involving numerous steps.
- the blade and tang are formed to the determined profile, shape and dimensions, usually by forging one or more metals or metal alloys or cutting a metal plate, or the pressure forming of a powdered ceramic material, before the grind is shaped.
- the process also includes one or more quenching steps in order to strengthen the blade, possibly a tempering step, a finalizing grinding step, a polishing step, possibly marking, manufacturing the handle, fixing it on the blade. silk and its forming and finishing, and finally a step of sharpening the grind in order to form the cutting edge.
- the present invention aims to provide a cutting instrument, a cutting instrument assembly or kit, and a method for obtaining such a cutting instrument, which do not present the disadvantages of the state of the art.
- the present invention aims to provide an alternative to existing state-of-the-art solutions.
- the present invention aims to provide a cutting instrument, for example a razor, a knife, a machete or a saber, which has an optimized grip, a blade with an improved and progressive cutting edge, a blade also having solidity and improved rigidity.
- the present invention aims to provide a method for producing a cutting instrument, for example a razor, a knife, a machete or a saber which is easy, quick and inexpensive to implement.
- the present invention relates to a cutting instrument with a fixed blade, one-piece, in one piece, comprising a body, one-piece, one-piece, having the shape of an ellipsoid comprising an equatorial plane of symmetry E, a plane of meridian symmetry M and a plane of polar symmetry P, the body comprising a truncated ellipsoid portion and which forms an asymmetrical blade, the blade comprising a first flat surface, forming a plane L, which is the truncation plane of the truncated ellipsoid portion, and a second surface (6) which is convex.
- the cutting instrument according to the invention comprises at least one, or any suitable combination, of the following characteristics:
- the blade comprises a cutting edge, formed by the intersection between the first surface and the second surface, which is convex,
- the plane L of the blade is oblique in relation to the equatorial plane E of the ellipsoid
- the plane L of the blade is oblique with respect to the equatorial plane E of the ellipsoid and oblique with respect to the meridian plane M and/or the polar plane P,
- the surface of the blade has the shape of a portion of an ellipse in the plane L and includes a rim
- the body has the shape of an elongated or oblong ellipsoid
- the cutting instrument is a kitchen utensil or a manual cutting or cutting tool, a razor, a knife, a machete or a saber,
- the present invention further relates to a set of cutting instruments, or a kit, comprising the cutting instrument according to the invention, and means for protecting the blade of the cutting instrument, which are assembled, or not, with a sharp instrument.
- the blade protection means comprise, or are, an ellipsoid element, having a shape and dimensions complementary to the portion of the truncated ellipsoid, in order to form, once associated with the cutting instrument, a non-truncated ellipsoid.
- the present invention also relates to a method of producing the cutting instrument according to the invention, comprising a step of taking, or producing, a one-piece body, made in one piece, having the shape of a ellipsoid comprising a portion of an ellipsoid which is truncated, or the steps of taking, or producing a body element, in one piece, made in one piece, having the shape of an ellipsoid and of producing a truncation of the ellipsoid , to obtain an ellipsoid portion which is truncated, the truncated ellipsoid portion forming an asymmetrical blade, comprising a first flat surface, forming a plane L, which is the truncation plane of the truncated ellipsoid portion, and a second surface which is convex.
- the method according to the invention comprises at least one, or any suitable combination, of the following characteristics:
- truncation means which are, include, or implement, cutting by a LASER beam, or abrasion using one or more abrasive tools
- the body is made by molding a material or mixture of materials
- the method further includes preliminary steps of determining the dimensions and shape of the ellipsoid of the body and determining the position and orientation of the plane L of truncation of the ellipsoid,
- Figure 1 is a schematic representation of a perspective view of an ellipsoid.
- Figure 2 is a schematic representation of a front view of an ellipsoid on which these three section planes are indicated.
- Figure 3 is a schematic representation of a perspective view of a first embodiment of the cutting instrument according to the invention.
- Figure 4 is a schematic representation of a side view of the embodiment of the cutting instrument shown in Figure 3.
- Figure 5 is a schematic perspective representation of the cutting plane forming the blade of the embodiment of the cutting instrument shown in Figure 3.
- Figure 6 is a schematic representation of a front view, blade side, of the embodiment of the cutting instrument shown in Figure 3.
- Figure 7 is a schematic representation of a side view of the cutting wire of the embodiment of the cutting instrument shown in Figure 3.
- Figure 8 is a schematic representation of a perspective view of the means used to produce the blade of the embodiment of the cutting instrument shown in Figure 3.
- Figure 9 is a schematic representation of a perspective view of an embodiment of the blade of the embodiment of the cutting instrument shown in Figure 3.
- Figure 10 is a schematic representation of a perspective view of a second embodiment of the cutting instrument according to the invention.
- Figure 11 is a schematic representation of a front view, blade side, of the embodiment of the cutting instrument shown in Figure 10.
- Figure 12 is a schematic representation of a perspective view of an embodiment of the method for obtaining the cutting instrument shown in Figure 10.
- Figure 13 is a schematic representation of a perspective view of a third embodiment of the cutting instrument according to the invention.
- Figure 14 is a schematic representation of a view of a detail of the embodiment of the cutting instrument shown in Figure 13.
- Figure 15 is a schematic representation of a perspective view of a fourth embodiment of the cutting instrument according to the invention.
- Figure 16 is a schematic representation of a perspective view of an embodiment of the method for obtaining the cutting instrument shown in Figure 15.
- Figure 17 is a schematic representation of a perspective view of the embodiment of the cutting instrument shown in Figure 3 with blade protection means.
- the cutting instrument 1 is defined according to a spatial reference XYZ, as represented in Figures 1 to 17.
- the term “length” is used to describe the dimension along the X-X' axis, the term “width” to describe the dimension along the Z-Z' axis, and the term “thickness” to describe the dimension along the Y-Y' axis.
- the term “significantly” is used, in the present description, to indicate a general orientation of the constituent elements of the cutting instrument 1 in relation to each other or in relation to the spatial reference frame.
- the cutting instrument 1 is a manual cutting or cutting instrument or tool, which is called “straight”. It is a sharp instrument with a fixed blade, not having handle elements, or a handle, fixed on a tang, because it does not have a tang.
- the cutting instrument 1 comprises a one-piece body 2, made in one piece. It can be solid and not hollow, which has the advantage of having increased resistance, or it can be hollow, or partially hollow, which has the advantage of being lighter. Body 2 has the shape of a truncated ellipsoid.
- An ellipsoid, or ellipsoid of revolution is defined by a radius “a”, or major equatorial radius, also called semi-major axis, a radius “b”, or small equatorial radius, also called semi-minor axis, and a ray “c”, or polar radius, (figure 1).
- the ellipsoid has a first plane of symmetry, extending along the major axis, the equatorial plane E, parallel to the plane XZ, a second plane of symmetry, the meridian plane M, parallel to the plane YZ, and a third plane, the polar plane P, parallel to the plane XY (figure 2).
- the ellipsoid defines two hemispheres, a northern hemisphere and a southern hemisphere, and eight identical volume sectors, each hemisphere comprising two series of two lateral sectors, which are also end sectors.
- the term “truncated ellipsoid” means an ellipsoid of which a hemisphere, or a portion of a hemisphere, or of which at least one or more sectors, of preferably two sectors, advantageously three sectors, is or are missing.
- the body 2 of the cutting instrument 1 has a radius b and a radius c which are, independently of each other, less than radius a.
- the radius b is equal to the radius c, the body 2 then adopts the shape of an elongated, or oblong, ellipsoid.
- the radius c is less than the radius b, which has the advantage of providing easier handling.
- the body 2 has dimensions, a length, a width and a thickness, therefore radii a, b and c, which are chosen as a function of, and whose relationship with each other depends on, the instrument cutting edge 1, its nature, razor, knife, machete or saber for example, its final use and its final user.
- the equatorial radius, radius a can be around 12 cm for a kitchen utensil, for example a knife, and around 17 cm for a weapon, for example a sword.
- the ellipsoid shape of the body 2, and therefore of the cutting instrument 1 has the advantage of having optimized ergonomics, of making it possible to optimize its grip by the fingers of one hand, for example for a knife, or its grip and palm, for example for a sabre, by varying the ratio between the different radii a, b and c.
- the body 2 of the cutting instrument 1 comprises a first end edge 2a and a second end edge 2b, opposite the first end edge 2a with respect to the meridian plane M, a first side edge 2c and a second opposite side edge 2d at the first lateral edge 2c relative to the polar plane P ( Figures 3 and 4).
- the body 2 comprises a first portion 2e of its length, which forms a blade 3, and a second portion 2f of its length, which forms a gripping portion, namely a handle 4.
- the handle 4 comprises, or is made, of the portion or portions of the body 2 which is or are not the blade 3 (figure 4).
- the length of the blade 3 and that of the handle 4 can be identical or equivalent; However, in other embodiments, they may be different.
- the blade 3 is formed by the truncation of the ellipsoid forming the body 2. It is formed by the section plane, or cutting plane, or truncation plane, of the ellipsoid, a portion of the ellipsoid, a portion of a hemisphere, a portion of the boreal hemisphere (figure 5).
- the blade 3 comprises a first surface 5, which is the surface of the portion of the ellipsoid which has been hollowed out; it is substantially flat, uniform, and forms an L plane, which also constitutes a grinding.
- Plane L is the plane of section, of truncation, of the ellipsoid of body 2. In this plane L, the blade 3 has the shape of an ellipse or a portion of an ellipse.
- the plane L is a plane oblique at least with respect to the equatorial plane E of body 2.
- the plane L is not parallel, nor perpendicular, to the equatorial plane E, but adopts an intermediate position between these two extreme positions. It can form, with the equatorial plane E, an angle greater than 5 degrees and less than 30 degrees.
- the plane L is oblique with respect to the equatorial plane E, but also oblique with respect to the meridian plane M and/or the polar plane P.
- the plane L is oblique with respect to the equatorial plane E by an angle of approximately 30°, oblique with respect to the meridian plane M by an angle of approximately 80° and oblique by relative to the polar plane P at an angle of approximately 45°.
- the angle formed by the plane L with the equatorial plane E, and possibly those formed with the meridian M and/or polar planes P, is or are determined, and a function, of the dimensions of the body 2, of the blade 3 , the fineness of the cutting edge 7, the nature of the cutting instrument 1, razor, knife, machete or saber for example, its final use and its final user.
- the handle 4 Seen from the side of the cutting instrument 1, the blade 3, and therefore its plane L, extend, preferably, along only a portion of the hemisphere (figure 4).
- the second portion 2f of the body 2 forming the handle 4 is a non-truncated portion of the ellipsoid, which makes gripping the cutting instrument 1 more pleasant.
- the handle 4 includes, or is formed by, a portion of the boreal hemisphere and the southern hemisphere (figure 4), by at least the two sectors of the first extreme edge 2a of the southern hemisphere.
- the blade 3, and therefore its plane L can also extend over at least the sector of the first lateral edge 2c of the boreal hemisphere or the sector of the second lateral edge 2d of the boreal hemisphere, depending on whether the end user of the cutting instrument 1 is right-handed or left-handed.
- the blade 3, and therefore its plane L also extend over, respectively, at least a portion of the sector of the second lateral edge 2d of the boreal hemisphere or of the sector of the first lateral edge 2c, and preferably also over a portion of the first lateral edge 2c of the southern hemisphere, advantageously also on a portion of the second lateral edge 2d of the southern hemisphere ( Figure 6).
- the blade 3 can extend along the northern hemisphere of the body 2, over a portion of the body 2 larger than that of the previous embodiment, advantageously with the exception of the first extreme edge 2a and the second extreme edge 2b ( Figure 10).
- the second portion 2f forming the handle 4 comprises a part of the plane L, without this affecting the gripping of the cutting instrument 1.
- the blade 3, and therefore its plane L can also extend over a portion of the sector of the first lateral edge 2c of the boreal hemisphere and the sector of the second lateral edge 2d of the boreal hemisphere, and possibly also on at least a portion of the sector of the second lateral edge 2d of the southern hemisphere (figure 11).
- the blade 3 it is also possible for the blade 3 to extend substantially along the two edges 2a, 2b, over all or part of the northern hemisphere and/or the southern hemisphere of the body 2, which has the advantage to obtain a cutting instrument 1 which is ambidextrous, therefore for use by a right-handed and a left-handed person.
- the blade 3 has two sides, two faces. It comprises, in addition to the first surface 5, a second surface 6 ( Figures 3, 4, 6, 7, 11, 13, 15).
- the blade 3 is asymmetrical, namely that the first surface 5 and the second surface 6 do not have the same profile. Preferably, it is asymmetrical throughout its length.
- the second surface 6 is not ground. It is convex. This has the advantage of providing structural reinforcement to the blade 3, thus improving its properties of resistance to torsion and vibrations, while providing it with improved hardness and a useful mass, which naturally contributes to supporting the cutting .
- the blade 3 has the advantage of having at least one tip 8 of rounded shape, which has the advantage of being less fragile in the event of a fall.
- the cutting edge 7 is formed by the intersection of the first flat surface 5 and the second convex surface 6. It is located at the intersection between the plane L and the second convex surface 6 of the blade. It is located at the portion of the ellipsoid at which the angle or angles, between the plane L and the convex surface 6, are the sharpest. It extends over at least a portion of a lateral edge 2c or 2d of the body 2 ( Figures 3, 10 and 13).
- the cutting wire 7 extends over at least a portion of a lateral edge 2c or 2d of the body 2. It is formed by the intersection of the first plane surface 5 and the second convex surface 6. It is located at the intersection between the plane L and the second convex surface 6 of the blade. It is located at the portion of the ellipsoid at which the angle or angles, between the plane L and the convex surface 6, are the sharpest.
- the blade 3 is preferably smooth along the cutting edge 7, but it cannot be excluded that it could be toothed, or partially toothed, therefore mixed.
- the teeth can be located on the second surface 6 of the blade 3.
- the cutting edge 7 of the blade is progressive (figure 7), that is to say that it flares from the second extreme edge 2b, towards the first extreme edge 2a.
- the cutting wire 7 is progressive, according to an exponential function; It has an exponential shape profile.
- the angle a which forms the surface 5 of the blade 3, and therefore the plane L, with the tangent, at this point, of the convex surface 6 is preferably less than 25°.
- it is around 15°.
- the angle formed by surface 5 with the tangent, at this point, of convex surface 6, is approximately 15°, and approximately 25° for a kitchen utensil like a knife.
- the angle P, which the surface 5 forms with the tangent, at this point, of its convex surface 6, is greater than the angle a. For example, it is around 40°.
- the angle y which the surface 5 forms with the tangent, at this point, of its convex surface 6 is greater than the angle (3. It is for example around 120°.
- the progressive cutting edge 7 has the advantage of having a very sharp blade 3 at its tip 8 and less sharp as the edge approaches the handle 4.
- the blade 3, and therefore the cutting instrument 1 have the advantage of having solidity, rigidity and gravity, improved compared to a symmetrical straight blade, of having good mechanical resistance, good resistance in the event of a fall, and to have a blade 3 with better cutting finesse due to a progressive cutting edge, and to allow the blade 3, its grinding, and the cutting edge 7 to be produced concomitantly during the production of the blade 3 and therefore of the cutting instrument 1.
- the cutting instrument 1 comprises a blade 3 having the shape of an ellipse portion.
- This ellipse portion can extend along the second lateral edge 2d (figure 14) or the first lateral edge 2c of the body, depending on whether the instrument is for a right-hander or a left-hander, or else extend substantially the along the two edges 2a, 2b of the body 2 ( Figure 15), which has the advantage of obtaining a cutting instrument 1 which is ambidextrous.
- the blade 3 comprises a rim 10, at the opposite end of the tip 8, which constitutes a transition between the blade 3 and the handle 4.
- This rim 10 can be oblique, preferably with an orientation towards the handle 4, in the plane ).
- the rim 10 is, forms part of, or cooperates with, means for receiving protection means 11 of the blade 3.
- the body 2 of the cutting instrument 1, and therefore its handle 4 and its blade 3, comprise, or are made, preferably of one or more materials, for example glass, one or more metals or one or more metal alloys. They may include, or be made of, aluminum, stainless steel, a titanium alloy, tungsten carbide or zirconium oxide.
- the cutting instrument 1 is a manual cutting or cutting tool.
- it is a razor, a knife, a machete or a saber. It is used to chop, mince, slice and/or cut all kinds of products, preferably food.
- the cutting instrument assembly 12 comprises, or is made up of, the cutting instrument 1 according to the invention, whatever the embodiment considered, associated with means of protection 11 of the blade 3 of said cutting instrument 1.
- This assembly 12 can also be a “kit”, namely the cutting instrument 1 and the means of protection 11 of the blade 3 not assembled together (figure 17).
- the means of protection 11 of the blade 3 are capable of, and intended to, receive, or cooperate with, the blade 3 and/or the body 2 of the cutting instrument 1, in a reversible manner.
- the protection means 11 have a complementary shape, or capable of cooperating, with the blade 3 and/or the body 2. They can comprise or take the form of a sheath in which the blade 3 comes 'engage.
- the protection means 11 take the shape of the truncated part of the ellipsoid of the body 2. They comprise, or are, an ellipsoid element 13, having a shape and dimensions complementary to the truncated ellipsoid of the body 2, in order to form, once associated with the cutting instrument 1, a non-truncated ellipsoid. It can have the shape of an ellipsoid (figure 17), or a portion of an ellipsoid. This gives the cutting instrument 1 an aesthetic advantage.
- the ellipsoid element 13 consists of the part, the physical element, of the ellipsoid which has been truncated.
- the means of protection 11 comprise, or are made of, the material(s) of which the blade 3 is made, or are compatible with the latter.
- the protection means 11 of the blade 3 are held on the body 2 or around the body 2, advantageously on the blade 3, or around the blade 3, by mechanical and/or magnetic means.
- the mechanical means may include or implement a male-female interaction, for example of the tenon-mortise type.
- the magnetic means may include one or more magnets, or implement the magnetization of the blade 3, with one or more magnets of the protection means or its magnetization.
- the means of protection 11 of the blade 3 can be used as a support for the cutting instrument 1, for example as a knife holder in the embodiment in which the cutting instrument 1 is a knife.
- the cutting instrument 1 has the advantage of being simplified and requiring very simple tools.
- the method of producing the cutting instrument 1 comprises the step of taking, or producing, a one-piece body 2, made in one piece having the shape of an ellipsoid, which can be solid and not hollow, or hollow or partially hollow, comprising a portion of the ellipsoid 2e which is truncated, or else the steps of taking or producing a one-piece body element 14, made in one piece having the shape of an ellipsoid, which can be full and not hollow, or hollow or partially hollow, and to produce a truncation of the ellipsoid.
- the method of producing the cutting instrument 1 according to the invention has the advantage of being easier to implement, requiring a reduced number of steps, thanks to the shape of the body 2 and that of the blade 3. In particular, it does not require the production of a tang, and therefore the fixing of elements to form a handle, and does not require the production of a grinding on both sides of the blade.
- the body element 14, or the truncated body 2 are produced by 3D printing, by molding, die casting, by forging, injection, MIM injection, or press and cutting, of a material or mixture of materials.
- the method according to the invention may comprise a preliminary step of producing the mold, or parts of the mold, or cavity, adapted to, and capable of, obtaining a one-piece body element 14, made in one piece, having the shape of an ellipsoid, or the body 2, having the shape of a truncated ellipsoid, and advantageously a prior step of determining the shape and the dimensions of the cutting instrument 1, of the ellipsoid, in particular these radii a, b, c, and possibly also of the size and orientation of the blade 3, in particular of the orientation of the plane L of the blade 3 relative to the equatorial plane E, the meridian plane M and the polar plane P.
- the method comprises the step of melting a material or a set of materials, pouring this or these materials into the mold, then cooling and demoulding the monobloc body element 14 or the body 2 of the cutting instrument 1.
- the step of truncating the ellipsoid is carried out using truncation means 15, capable of carrying out cutting or abrasion of one or more materials.
- This step can be done by cutting an entire block of the ellipsoid, which can then form the ellipsoid element 13 of the blade protection means 11, the cutting means 15, comprising, or being, by example, a LASER beam, or by mechanical or chemical abrasion of successive layers of the material(s) of the body element 14, the cutting means 15, comprising or being, one or more abrasive tools, for example , a grinding wheel 16.
- the latter is made of, or comprises, a material or an assembly of materials, compatible with the material(s) of the body element 14, capable of abrading the latter, therefore to remove material.
- the method according to the invention may further comprise steps prior to the formation of the body 2, or of the body element 14, which may include, or consist of, the determination of the dimensions and therefore of the shape of the ellipsoid, for example the determination of the lengths of the radii a, b, c of the ellipsoid and their ratio to each other, in the determination of the cutting or truncation plane of the ellipsoid, for example its position with respect to one of the hemispheres, preferably the two hemispheres of body 2, its orientation relative to the equatorial plane E, to the meridian plane M and to the polar plane P.
- these steps are carried out depending on the nature and /or the destination of the cutting instrument 1 according to the invention and/or its end user. This has the advantage of being able to optimize the ergonomics and grip of the cutting instrument 1.
- all or part of these steps are carried out by modeling, advantageously using software and computer resources, which has the advantage of having increased design flexibility.
- the method according to the invention may further comprise steps of deburring and/or shot peening and/or polishing, for example mechanical-chemical polishing or tribofinishing and/or grinding and/or reinforcement of the blade, and possibly a step for partially or completely serrating the cutting edge 7.
- the method may comprise a step of polishing the body 2 and/or the blade 3 and/or a step of quenching and annealing in order to increase the hardness of the cutting instrument 1, in particular of the blade 3, preferably up to a value between approximately 50 and approximately 60 Rockwell.
- the method of producing the cutting instrument assembly 12, or the kit comprises the implementation of the method of producing the cutting instrument 1 according to the invention, and a step of taking, or producing, measurements means of protection 11 of the blade 3, capable of, and intended to, receive, or cooperate with, the blade 3 and/or the body 2 of the cutting instrument 1.
- the method of producing the means of protection 11 of the blade 3 comprises, or implements, steps and/or successions of steps, identical or equivalent, to those implemented for the production of the body 2, or the body element 14, of cutting instruments 1.
- it implements LASER ablation of the body element 14 to form the ellipsoid element 13.
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- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Knives (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/FR2022/051233 WO2023247839A1 (fr) | 2022-06-23 | 2022-06-23 | Instrument tranchant et methode d'obtention |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4543643A1 true EP4543643A1 (fr) | 2025-04-30 |
Family
ID=82839165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22751407.2A Pending EP4543643A1 (fr) | 2022-06-23 | 2022-06-23 | Instrument tranchant et methode d'obtention |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP4543643A1 (fr) |
| WO (1) | WO2023247839A1 (fr) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2285013A (en) * | 1941-06-23 | 1942-06-02 | Joseph E Burns | Cutlery |
| DE20209500U1 (de) * | 2002-06-19 | 2004-01-15 | Zwilling J. A. Henckels Ag | Messer |
| FR3080312B3 (fr) | 2018-04-20 | 2020-04-17 | Morin Pierre Edouard | Couteau fermant ou droit a connotation sportive |
-
2022
- 2022-06-23 EP EP22751407.2A patent/EP4543643A1/fr active Pending
- 2022-06-23 WO PCT/FR2022/051233 patent/WO2023247839A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023247839A1 (fr) | 2023-12-28 |
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