EP2551072A1 - Knife provided with a whistle - Google Patents

Knife provided with a whistle Download PDF

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Publication number
EP2551072A1
EP2551072A1 EP12305876A EP12305876A EP2551072A1 EP 2551072 A1 EP2551072 A1 EP 2551072A1 EP 12305876 A EP12305876 A EP 12305876A EP 12305876 A EP12305876 A EP 12305876A EP 2551072 A1 EP2551072 A1 EP 2551072A1
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EP
European Patent Office
Prior art keywords
handle
knife
compression chamber
expansion
knife according
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.)
Granted
Application number
EP12305876A
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German (de)
French (fr)
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EP2551072B1 (en
Inventor
Denis Porret
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Opinel
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Opinel
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Publication of EP2551072A1 publication Critical patent/EP2551072A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B11/00—Hand knives combined with other implements, e.g. with corkscrew, with scissors, with writing implement
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K5/00—Whistles

Definitions

  • the present invention relates to a knife provided with a sound emitting means by air passage, of the whistle type, and more particularly to a folding blade knife.
  • Such whistles have the disadvantage of adding to the many means and safety devices that must carry users: magnifying glass, knife, lamp, compass, etc ...
  • the invention proposes to remedy these drawbacks, and proposes a knife provided with a sound emitting means by air passage, the whistle type, the presence of the latter causing no discomfort for the user of the knife, the whistle being usable in a simple and comfortable manner on the one hand, and not bringing additional weight to the knife on the other hand.
  • the invention is also applicable to folding blade knives, without the whistle does not affect the folding of the blade in the handle.
  • the knife provided with a handle and a blade, associated with means of the whistle type and able to emit a sound with the aid of an air flow, said means comprising a recess connected upstream to a mouth, through which said flow of air is introduced, and downstream to an evacuation window, and secondly an air compression chamber downstream of the mouth, and opening (through a light) into an expansion (or expansion) chamber, itself connected to said evacuation window, is characterized in that said whistle means are integrated in the body of the handle, incorporated inside the body of said handle, and in that the handle is made by molding, the compression chamber, the expansion chambers and the discharge windows being made during molding by reservation or equivalent, to achieve the necessary recesses.
  • the handle is made in one block.
  • the compression chamber is such that its section, in section along a plane orthogonal to the longitudinal axis of the handle (or orthogonal to the air flow), decreases linearly preferably in the direction of the chamber of expansion.
  • a block with a rectangular base and a trapezoidal section is fixed, so as to create a rising ramp from the mouth to the light communicating with the expansion chamber (on the one hand) and on the other hand the evacuation window.
  • the evacuation window has a bevelled edge on the opposite side to the compression chamber.
  • the compression chamber opens on two separate expansion chambers, sealed with respect to each other, and each opening into an evacuation window.
  • the two expansion chambers are of elongate, parallel shape and of different lengths, in the direction of the air flow (parallel to the longitudinal axis of the handle).
  • the sound emitting means are arranged in the handle so that the direction of the air flow is parallel, preferably collinear, to the longitudinal axis of the handle.
  • the blade is foldable in a housing provided in the handle which separates the latter into two contiguous parts facing each other, in a substantially middle longitudinal plane of the handle, said sound emitting means then being incorporated into one of said parts.
  • the compression chamber In a plane transverse to the longitudinal axis of the knife, the compression chamber is of rectangular section, while the expansion chamber is of square section.
  • the handle is made of plastic, preferably thermoplastic and may comprise reinforcing fibers, for example based on polyamide (PA), in particular filled with glass fibers, or polybutylene terephthalate (PBT).
  • PA polyamide
  • PBT polybutylene terephthalate
  • the handle of substantially cylindrical shape, is made by molding in a single block, using a drawer mold to reserve parts intended to form the chambers, recesses and ducts.
  • the compression chamber, the expansion or expansion chamber or chambers and the window or windows are produced, during molding, by reservation or other known means for producing the necessary recesses.
  • FIGS. 9A, 9B, 9C, 9D and 9E are cross-sectional views, according to vertical planes corresponding to different sections of the handle of the figure 7 , including the whistle shown on the Figures 6 and 8 .
  • the knife of the invention is described next to an example of pocket knife, with foldable blade, shown in exploded perspective.
  • the knife 1 comprises an elongate handle 2, a blade 3 whose proximal end comprises a heel 4 (close to the handle) mounted articulated on the handle 2 at its proximal end 5 which has a recess 6 capable of receiving the heel 4.
  • a split ring 8 covers the end 5 of the handle 3, and whose slot corresponds and is opposite the recess 6.
  • the hinge of the blade 3 on the handle is formed by a pin 7 which passes through the ring 8, the end 5 of the handle 2 and the heel 4 of the blade 3.
  • the blade 3 can be folded into the handle which has a corresponding recess (which is not visible in the figure).
  • a split ferrule 9 covers the ring 8 and is rotatable relative thereto. Means known in themselves and not shown are provided to prevent longitudinal translation movement of the shell 9.
  • the ferrule 9, depending on its rotational position, allows the passage to the blade 3 (the slots of the ferrule 9 and the ring 8 are then opposite), or to block the blade (the ferrule 9 preventing then the passage of the blade), in the deployed open position (FIG. 3), or closed, the blade being folded in the handle (FIG. figure 2 in top view).
  • the knife 1 of the invention comprises sound-emitting means, of the whistle type, incorporated in the handle, and described below with regard to the Figures 5 to 7 .
  • the figure 5 is a simplified diagram showing the principle of operation of the whistle, seen in longitudinal section of a block shaped tube rectangular section and symbolizing the handle of the knife. The cut is made in a horizontal plane when the knife is as shown on the figure 3 .
  • the whistle is schematized in the form of a tube 18, having at one end a mouth or mouth 19 and the other end 20 is closed.
  • the mouth 19 is provided on an open side of a compression chamber 21, itself connected at its other end (opposite the mouth 19), by a light 22, to an expansion or expansion chamber 23 (of parallelepipedic shape).
  • the latter is provided, at its upper wall, with a discharge window 24 located near said light 22.
  • the downstream edge of the window 23, opposite the compression chamber 21, comprises a bevel 25.
  • the compression chamber 21 is of prismatic shape with trapezoidal cross section.
  • a block 26, with a square or rectangular section and with a trapezoidal section, is provided in the downstream part of the tube 18.
  • the cross section in a vertical plane of the mouth 19 is greater than that of the light 22 communicating with the expansion chamber 23.
  • the slope of the oblique wall 26A is between 5 ° and 20 ° preferably between 10 ° and 13 °, for a length (in the longitudinal direction of the handle) of the order of 18 mm.
  • the figure 6 shows a schematic view in longitudinal section along a horizontal plane of a preferred embodiment of the whistle incorporated in the handle, said section being made in the position of the knife shown on the figure 3 .
  • This whistle variant differs from that of the figure 5 in that it comprises two expansion chambers 23A and 23B parallel and separated by a dividing wall 27, and each opening on a discharge window 24A and 24B. Both relaxation chambers 23A and 23B are arranged at the same level in a vertical plane, side by side.
  • the first expansion chamber 23A is longer than the second 23B, and it has a first portion 28 (towards the knife blade) protruding, in the longitudinal direction, a second portion 29 which opens into the window 24A.
  • the second portion 29 has the same length as the second expansion chamber 23B.
  • the single compression chamber 21, disposed upstream, opens into the two expansion chambers 23A and 23B.
  • the expansion chambers 23A and 23B being of different lengths, they emit, through their respective discharge windows 24A and 24B, sounds of different frequencies.
  • the evacuation windows 24A and 24B have their beveled downstream edge (close to the blade), to improve the sound.
  • the relaxation rooms 23A and 23B present, in the plan of the figure 6 lengths of 30 mm and 25 mm, respectively, and a width of 5 mm.
  • the thickness of the separating partition 27 is of the order of 1.1 mm.
  • the figure 7 shows a schematic side view of the knife of the invention, in the handle of which is incorporated a whistle such as that shown in section on the figure 6 , and also shown on the figure 8 in section along a horizontal plane HH (see figure 7 ).
  • the figure 8 is a sectional view similar to that of the figure 5 because both are made in horizontal planes, while the figure 6 is a sectional view along a vertical plane.
  • the dimensions of the evacuation windows 24A and 24B are identical, namely, in a view from above ( figure 6 ): 5 mm x 5.5 mm.
  • FIGS. 9A to 9E are cross-sectional views of the handle at different locations of the handle, according to vertical planes, transverse, successive, and referenced AA, BB, CC, DD and EE.
  • the AA plane is closest to the blade.
  • the handle has a longitudinal recess 30, in a vertical plane, quadrangular section, and intended to accommodate the blade (not shown).
  • the Figure 9A is a sectional view along the plane AA, showing the first portion 28 of the first expansion chamber 23A, of square section (4.8 mm x 4.3 mm).
  • the Figure 9B is a sectional view along the plane BB, showing the second portion 29 of the first expansion chamber 23A, and the second expansion chamber 23B of square section (5.3 mm x 4.3).
  • the Figure 9C is a sectional view along the plane CC, showing the second portion 29 of the first expansion chamber 23A, and the second expansion chamber 23B of square section (5.3 mm ⁇ 4.3 mm).
  • the sectional view is located at the neighboring discharge windows 24A and 24B, and shows the partition 27 separating the two expansion chambers 23A and 23B.
  • the Figure 9D is a sectional view along the plane DD, showing the compression chamber 21, of rectangular section (2 mm x 11.5 mm), at the bottom of said chamber (opposite the end 14 of the handle).
  • the Figure 9E is a sectional view along the plane EE, showing the compression chamber 21 of rectangular section (3.5 mm ⁇ 11.5 mm), and the through-light in a direction transverse to the longitudinal axis of the handle.
  • the handle 2 of the knife is made of thermoformable plastic material, such as for example polyamide (PA) or PBT (polybutylene terephthalate).
  • PA polyamide
  • PBT polybutylene terephthalate
  • the handle is made by single-piece molding, and has two parts 2A so-called left and 2B called right (based on the figure 8 .
  • the thickness of the central recess 30 (for the blade) is about 2.2 mm.
  • the right portion 2B of the handle includes the whistle of the invention.
  • the compression chamber, the expansion chambers and the evacuation windows are made during molding by reservation or other known means for making the necessary recesses.
  • the whistle described above is integrated into the body of the handle and is made inside thereof.
  • the user By blowing into the mouth 19, the user creates a flow of air which enters the compression chamber 21. Due to the ramp 26, the pressure of the air flow increases at the outlet of the chamber 21 to penetrate, after passing through the lumen 22, into the expansion chamber 23, or the two expansion chambers 23A and 23B from which the air then escapes through the window 24 or through the two windows 24A and 24B.
  • the fact that the relaxation chambers are of different lengths makes it possible to emit sounds by each window having different frequency spectra, one being more acute than the other. The end result only accentuates the power of the overall sound emitted, in this case noticeable at several hundred meters.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Toys (AREA)
  • Knives (AREA)

Abstract

The knife has a mouthpiece (19) connected to an exit window (24). An air compression chamber (21) is located downstream from the mouthpiece opening through a hole into an expansion chamber or a pressure relief chamber. Whistling units are integrated into a body of an elongated handle (2) and incorporated in an inner side of the body of the handle, where the handle is made by molding. The compression chamber, the expansion chamber and the exit window are used during molding by reservation to carry out recesses. The handle is made of thermoplastic and polyamide or polybutylene terephthalate.

Description

La présente invention concerne un couteau pourvu d'un moyen émetteur de son par passage d'air, du type sifflet, et plus particulièrement un couteau à lame repliable.The present invention relates to a knife provided with a sound emitting means by air passage, of the whistle type, and more particularly to a folding blade knife.

Il est des situations où il peut être opportun, voire nécessaire, ou même vital de pouvoir signaler sa présence, ou attirer l'attention de tiers. Ce peut être le cas de personnes en difficulté, dans le cadre d'activités sportives ou ludiques en extérieur dans un environnement sauvage et désert, telles que randonneur, alpiniste, plaisancier, ou autres.There are situations where it may be opportune, even necessary, or even vital to be able to signal its presence, or to attract the attention of third parties. This can be the case of people in difficulty, as part of outdoor sports or play activities in a wild and deserted environment, such as hiker, mountaineer, boater, or others.

Il existe depuis très longtemps des sifflets, à bille ou faisant appel à d'autres techniques, permettant par passage d'air d'émettre un son, généralement aigu.There have been whistles for a very long time, ball or using other techniques, allowing air passage to emit a sound, usually acute.

De tels sifflets ont l'inconvénient de s'ajouter aux nombreux moyens et dispositifs de sécurité que doivent emporter les utilisateurs : loupe, couteau, lampe, boussole, etc ...Such whistles have the disadvantage of adding to the many means and safety devices that must carry users: magnifying glass, knife, lamp, compass, etc ...

De manière connue, on a proposé de rapporter, de manière amovible ou définitive, un sifflet sur un autre ustensile et notamment sur un couteau.In known manner, it has been proposed to report, removably or permanently, a whistle on another utensil and in particular on a knife.

Si ce système connu permet de regrouper deux fonctions (couteau et sifflet) sur un même objet, il n'apporte aucun confort additionnel à l'utilisateur en termes de poids et d'encombrement.If this known system allows to combine two functions (knife and whistle) on the same object, it provides no additional comfort to the user in terms of weight and bulk.

De plus, le fait d'utiliser un sifflet rapporté sur un manche de couteau et saillant de celui-ci, peut se révéler mal commode. Inversement, la présence d'un sifflet saillant du manche de couteau peut gêner le maniement de ce dernier.In addition, the use of a whistle reported on a knife handle and protruding thereof, may be inconvenient. Conversely, the presence of a whistle protruding from the knife handle may interfere with the handling of the latter.

Dans l'hypothèse où le sifflet est rapporté de manière amovible sur le manche d'un couteau, on retrouve l'inconvénient mentionné ci-dessus.In the event that the whistle is removably attached to the handle of a knife, there is the disadvantage mentioned above.

L'invention se propose de remédier à ces inconvénients, et propose un couteau pourvu d'un moyen émetteur de son par passage d'air, du type sifflet, la présence de ce dernier n'entraînant aucune gêne pour l'utilisateur du couteau, le sifflet étant utilisable de manière simple et confortable d'une part, et n'apportant pas de poids supplémentaire au couteau d'autre part.The invention proposes to remedy these drawbacks, and proposes a knife provided with a sound emitting means by air passage, the whistle type, the presence of the latter causing no discomfort for the user of the knife, the whistle being usable in a simple and comfortable manner on the one hand, and not bringing additional weight to the knife on the other hand.

Enfin, l'invention est également applicable aux couteaux à lame repliable, sans que le sifflet n'affecte le repliement de la lame dans le manche.Finally, the invention is also applicable to folding blade knives, without the whistle does not affect the folding of the blade in the handle.

A cette fin, selon l'invention, le couteau pourvu d'un manche et d'une lame, associé à des moyens du type sifflet et aptes à émettre un son à l'aide d'un flux d'air, lesdits moyens comportant un évidement relié en amont à une embouchure, par où ledit flux d'air est introduit, et en aval à une fenêtre d'évacuation, et d'autre part une chambre de compression de l'air en aval de l'embouchure, et débouchant (par une lumière) dans une chambre d'expansion (ou de détente), elle-même reliée à ladite fenêtre d'évacuation, est caractérisé en ce que lesdits moyens sifflet sont intégrés au corps du manche, incorporés à l'intérieur du corps dudit manche, et en ce que le manche est réalisé par moulage, la chambre de compression, les chambres de détente et les fenêtres d'évacuation étant réalisées lors du moulage par réservation ou équivalent, pour réaliser les évidements nécessaires.To this end, according to the invention, the knife provided with a handle and a blade, associated with means of the whistle type and able to emit a sound with the aid of an air flow, said means comprising a recess connected upstream to a mouth, through which said flow of air is introduced, and downstream to an evacuation window, and secondly an air compression chamber downstream of the mouth, and opening (through a light) into an expansion (or expansion) chamber, itself connected to said evacuation window, is characterized in that said whistle means are integrated in the body of the handle, incorporated inside the body of said handle, and in that the handle is made by molding, the compression chamber, the expansion chambers and the discharge windows being made during molding by reservation or equivalent, to achieve the necessary recesses.

Avantageusement, le manche est réalisé en un seul bloc.Advantageously, the handle is made in one block.

La chambre de compression est telle que sa section, en coupe selon un plan orthogonal à l'axe longitudinal du manche (ou encore orthogonal au flux d'air), diminue, de manière linéaire de préférence, dans la direction de la chambre d'expansion.The compression chamber is such that its section, in section along a plane orthogonal to the longitudinal axis of the handle (or orthogonal to the air flow), decreases linearly preferably in the direction of the chamber of expansion.

Plus précisément, sur l'une des faces internes de la chambre de compression, est fixé un bloc à base rectangle et à section trapézoïdale, de manière à créer une rampe montante depuis l'embouchure jusqu'à la lumière communiquant avec d'une part la chambre d'expansion (de détente), et d'autre part la fenêtre d'évacuation.More precisely, on one of the internal faces of the compression chamber, a block with a rectangular base and a trapezoidal section is fixed, so as to create a rising ramp from the mouth to the light communicating with the expansion chamber (on the one hand) and on the other hand the evacuation window.

La fenêtre d'évacuation comporte un bord biseauté du côté opposé à la chambre de compression.The evacuation window has a bevelled edge on the opposite side to the compression chamber.

La chambre de compression débouche sur deux chambres d'expansion distinctes, étanches l'une par rapport à l'autre, et débouchant chacune dans une fenêtre d'évacuation.The compression chamber opens on two separate expansion chambers, sealed with respect to each other, and each opening into an evacuation window.

Les deux chambres d'expansion sont de forme longilignes, parallèles et de longueurs différentes, dans la direction du flux d'air (parallèlement à l'axe longitudinal du manche).The two expansion chambers are of elongate, parallel shape and of different lengths, in the direction of the air flow (parallel to the longitudinal axis of the handle).

Les moyens émetteurs de son sont agencés dans le manche de façon que la direction du flux d'air soit parallèle, de préférence colinéaire, à l'axe longitudinal du manche.The sound emitting means are arranged in the handle so that the direction of the air flow is parallel, preferably collinear, to the longitudinal axis of the handle.

La lame est repliable dans un logement prévu dans le manche qui sépare ce dernier en deux parties contigües face à face, selon un plan longitudinal sensiblement médian du manche, lesdits moyens émetteurs de son étant alors incorporés dans l'une desdites parties.The blade is foldable in a housing provided in the handle which separates the latter into two contiguous parts facing each other, in a substantially middle longitudinal plane of the handle, said sound emitting means then being incorporated into one of said parts.

Dans un plan transversal à l'axe longitudinal du couteau, la chambre de compression est de section rectangulaire, tandis que la chambre d'expansion est de section carrée.In a plane transverse to the longitudinal axis of the knife, the compression chamber is of rectangular section, while the expansion chamber is of square section.

Les moyens présentent des dimensions suivantes pour un manche d'un diamètre de 20 mm :

  • la section de l'embouchure est comprise entre 40 et 46 mm2;
  • la longueur de la première chambre d'expansion est de l'ordre de 30 mm;
  • la longueur de la seconde chambre d'expansion est de l'ordre de 36 mm;
  • le volume de la chambre de compression est de l'ordre de 420 mm3;
  • la section amont de la chambre de compression est de l'ordre de 45 mm2;
  • la section aval de la chambre de compression est de l'ordre de 12 mm2.
The means have the following dimensions for a handle with a diameter of 20 mm:
  • the section of the mouth is between 40 and 46 mm 2 ;
  • the length of the first expansion chamber is of the order of 30 mm;
  • the length of the second expansion chamber is of the order of 36 mm;
  • the volume of the compression chamber is of the order of 420 mm 3 ;
  • the upstream section of the compression chamber is of the order of 45 mm 2 ;
  • the downstream section of the compression chamber is of the order of 12 mm 2 .

Le manche est en matière plastique, de préférence thermoplastique et pouvant comprendre des fibres de renforcement, par exemple à base de polyamide (PA), en particulier chargé de fibres de verre, ou du polybutylène téraphtalate (PBT).The handle is made of plastic, preferably thermoplastic and may comprise reinforcing fibers, for example based on polyamide (PA), in particular filled with glass fibers, or polybutylene terephthalate (PBT).

Le manche, de forme sensiblement cylindrique, est réalisé par moulage en un seul bloc, à l'aide d'un moule à tiroir afin de réserver des parties destinées à constituer les chambres, évidements et conduits.The handle, of substantially cylindrical shape, is made by molding in a single block, using a drawer mold to reserve parts intended to form the chambers, recesses and ducts.

Dans le cas d'un couteau à lame repliable, il est prévu un évidement central dans le manche pour loger la lame (au moins une majeure partie de celle-ci).In the case of a folding blade knife, there is provided a central recess in the handle for housing the blade (at least a major part thereof).

La chambre de compression, la ou les chambres d'expansion ou de détente et la ou les fenêtres, sont réalisées, lors du moulage, par réservation ou autre moyen connu pour réaliser les évidements nécessaires.The compression chamber, the expansion or expansion chamber or chambers and the window or windows, are produced, during molding, by reservation or other known means for producing the necessary recesses.

L'invention sera bien comprise à la lumière de la description qui suit, se rapportant à des exemples illustratifs, mais non limitatifs, de l'invention basée sur les dessins annexés dans lesquels :

  • La figure 1 est une vue en perspective éclatée du couteau de l'invention à lame repliable.
  • La figure 2 est une vue de dessus du couteau, la lame étant repliée dans le manche.
  • La figure 3 est une vue de côté du couteau avec la lame déployée.
  • La figure 4 est une vue arrière du manche du couteau montrant l'embouche du sifflet.
  • La figure 5 est un schéma simplifié, montrant en coupe longitudinale, selon un plan horizontal, le principe du sifflet incorporé dans le manche du couteau.
  • La figure 6 est une vue simplifiée de dessus, en coupe longitudinale dans un plan vertical, d'une variante du sifflet de la figure 5.
  • La figure 7 est une vue schématique de côté du manche seul.
  • La figure 8 est une vue en coupe selon un plan H-H de la figure 7.
The invention will be better understood in the light of the description which follows, referring to illustrative, but not limiting, examples of the invention based on the appended drawings in which:
  • The figure 1 is an exploded perspective view of the knife of the invention folding blade.
  • The figure 2 is a top view of the knife, the blade being folded in the handle.
  • The figure 3 is a side view of the knife with the blade deployed.
  • The figure 4 is a rear view of the handle of the knife showing the fattening of the whistle.
  • The figure 5 is a simplified diagram, showing in longitudinal section, in a horizontal plane, the principle of the whistle incorporated in the handle of the knife.
  • The figure 6 is a simplified view from above, in longitudinal section in a vertical plane, of a variant of the whistle of the figure 5 .
  • The figure 7 is a schematic side view of the handle alone.
  • The figure 8 is a sectional view along a plane HH of the figure 7 .

Les figures 9A, 9B, 9C, 9D et 9E sont des vues en coupe transversale, selon des plans verticaux correspondant à différentes sections du manche de la figure 7, incluant le sifflet montré sur les figures 6 et 8.The FIGS. 9A, 9B, 9C, 9D and 9E are cross-sectional views, according to vertical planes corresponding to different sections of the handle of the figure 7 , including the whistle shown on the Figures 6 and 8 .

Les termes « horizontal », « vertical », « de dessus », et « de côté » se référent à des positions naturelles d'utilisation normale du couteau, dans la main de l'utilisateur, comme par exemple selon la vue de côté de la figure 3. Un plan dit « vertical » est alors parallèle au plan de la figure et un plan « horizontal » est perpendiculaire au plan de la figure 3.The terms "horizontal", "vertical", "top", and "side" refer to natural positions of normal use of the knife, in the user's hand, as for example according to the side view of the figure 3 . A so-called "vertical" plane is then parallel to the plane of the figure and a "horizontal" plane is perpendicular to the plane of the figure 3 .

En référence à la figure 1, le couteau de l'invention est décrit en regard d'un exemple de couteau dit de poche, à lame repliable, montré en perspective éclatée.With reference to the figure 1 , the knife of the invention is described next to an example of pocket knife, with foldable blade, shown in exploded perspective.

Le couteau 1 comporte un manche longiligne 2, une lame 3 dont l'extrémité proximale comporte un talon 4 (proche du manche) monté articulé sur le manche 2 en son extrémité proximale 5 qui comporte un évidement 6 susceptible d'accueillir le talon 4.The knife 1 comprises an elongate handle 2, a blade 3 whose proximal end comprises a heel 4 (close to the handle) mounted articulated on the handle 2 at its proximal end 5 which has a recess 6 capable of receiving the heel 4.

Une bague fendue 8 recouvre l'extrémité 5 du manche 3, et dont la fente correspond et est en regard de l'évidement 6.A split ring 8 covers the end 5 of the handle 3, and whose slot corresponds and is opposite the recess 6.

L'articulation de la lame 3 sur le manche est réalisée par une goupille 7 qui traverse la bague 8, l'extrémité 5 du manche 2 et le talon 4 de la lame 3.The hinge of the blade 3 on the handle is formed by a pin 7 which passes through the ring 8, the end 5 of the handle 2 and the heel 4 of the blade 3.

La lame 3 peut être repliée dans le manche qui comporte un évidement correspondant (qui n'est pas visible sur la figure).The blade 3 can be folded into the handle which has a corresponding recess (which is not visible in the figure).

Une virole fendue 9 recouvre la bague 8 et est mobile en rotation par rapport à celle-ci. Des moyens connus en eux-mêmes et non représentés sont prévus pour empêcher tout mouvement de translation longitudinale de la virole 9.A split ferrule 9 covers the ring 8 and is rotatable relative thereto. Means known in themselves and not shown are provided to prevent longitudinal translation movement of the shell 9.

La virole 9, en fonction de sa position en rotation, permet de laisser le passage à la lame 3 (les fentes de la virole 9 et de la bague 8 sont alors en regard), ou de bloquer la lame (la virole 9 empêchant alors le passage de la lame), en position soit ouverte déployée (figue 3), soit fermée, la lame étant repliée dans le manche (figure 2 en vue de dessus).The ferrule 9, depending on its rotational position, allows the passage to the blade 3 (the slots of the ferrule 9 and the ring 8 are then opposite), or to block the blade (the ferrule 9 preventing then the passage of the blade), in the deployed open position (FIG. 3), or closed, the blade being folded in the handle (FIG. figure 2 in top view).

En référence à nouveau à la figure 1, le couteau présente de manière optionnelle, les caractéristiques additionnelles suivantes :

  • ➢ Des flancs 10 et 11 sont prévus de chaque côté du manche, à but décoratif ou fonctionnel (en matériau permettant une meilleure prise en main) ; ces flancs sont en matériau plastique de nature à permettre leur fixation sur le manche par polymérisation,
  • ➢ La lame 3 comporte une lumière 12 en forme de démanilleur et une partie 13 au moins de son bord actif est crantée.
  • ➢ L'extrémité distale 14 (opposée à la lame) du manche 3 comporte un trou 15 traversant au travers duquel peut passer un anneau (non représenté). Le trou 15 est associé à deux méplats 16 et 17 latéraux (figure 2).
With reference again to the figure 1 , the knife optionally has the following additional features:
  • ➢ Flanks 10 and 11 are provided on each side of the handle, for decorative or functional purpose (material for better grip); these flanks are made of plastic material such as to enable them to be fixed on the handle by polymerization,
  • ➢ The blade 3 comprises a light 12 in the shape of demanilleur and at least part of its active edge is notched.
  • ➢ The distal end 14 (opposite the blade) of the handle 3 has a through hole through which can pass a ring (not shown). The hole 15 is associated with two flats 16 and 17 on the sides ( figure 2 ).

De plus, le couteau 1 de l'invention comporte des moyens émetteurs de sons, du type sifflet, incorporés dans le manche, et décrits ci-après au regard des figures 5 à 7.In addition, the knife 1 of the invention comprises sound-emitting means, of the whistle type, incorporated in the handle, and described below with regard to the Figures 5 to 7 .

La figure 5 est un schéma simplifié montrant le principe de fonctionnement du sifflet, vu en coupe longitudinale d'un bloc en forme de tube à section rectangulaire et symbolisant le manche du couteau. La coupe est réalisée selon un plan horizontal lorsque le couteau est comme montré sur la figure 3.The figure 5 is a simplified diagram showing the principle of operation of the whistle, seen in longitudinal section of a block shaped tube rectangular section and symbolizing the handle of the knife. The cut is made in a horizontal plane when the knife is as shown on the figure 3 .

Le sifflet est schématisé sous forme d'un tube 18, comportant à une extrémité une embouchure ou bouche 19 et dont l'autre extrémité 20 est fermée. La bouche 19 est prévue sur un côté ouvert d'une chambre de compression 21, elle-même reliée à son autre extrémité (opposée à la bouche 19), par une lumière 22, à une chambre d'expansion ou de détente 23 (de forme parallélépipédique).The whistle is schematized in the form of a tube 18, having at one end a mouth or mouth 19 and the other end 20 is closed. The mouth 19 is provided on an open side of a compression chamber 21, itself connected at its other end (opposite the mouth 19), by a light 22, to an expansion or expansion chamber 23 (of parallelepipedic shape).

Cette dernière est pourvue, en sa paroi supérieure, d'une fenêtre d'évacuation 24 située à proximité de la dite lumière 22. Le bord aval de la fenêtre 23, opposé à la chambre de compression 21, comporte un biseau 25.The latter is provided, at its upper wall, with a discharge window 24 located near said light 22. The downstream edge of the window 23, opposite the compression chamber 21, comprises a bevel 25.

La chambre de compression 21 est de forme prismatique à section transversale trapézoïdale. Un bloc 26, à section carrée ou rectangle et à section trapézoïdale, est prévu dans la partie aval du tube 18. La paroi oblique 26A du bloc 26, en pente ascendante vers la lumière 22, délimite avec les autres parois du tube 18, la chambre de compression 21. Autrement dit, la section droite dans un plan vertical de la bouche 19 est supérieure à celle de la lumière 22 communiquant avec la chambre de détente 23. La pente de la paroi oblique 26A est comprise entre 5° et 20°, de préférence entre 10° et 13°, pour une longueur (dans les sens longitudinal du manche) de l'ordre de 18 mm.The compression chamber 21 is of prismatic shape with trapezoidal cross section. A block 26, with a square or rectangular section and with a trapezoidal section, is provided in the downstream part of the tube 18. The oblique wall 26A of the block 26, on an upward slope towards the lumen 22, delimits with the other walls of the tube 18, the compression chamber 21. In other words, the cross section in a vertical plane of the mouth 19 is greater than that of the light 22 communicating with the expansion chamber 23. The slope of the oblique wall 26A is between 5 ° and 20 ° preferably between 10 ° and 13 °, for a length (in the longitudinal direction of the handle) of the order of 18 mm.

La figure 6 montre une vue schématique en coupe longitudinale selon un plan horizontal d'une forme préférée de réalisation du sifflet intégré dans le manche, ladite coupe étant réalisée dans la position du couteau montrée sur la figure 3.The figure 6 shows a schematic view in longitudinal section along a horizontal plane of a preferred embodiment of the whistle incorporated in the handle, said section being made in the position of the knife shown on the figure 3 .

Cette variante de sifflet diffère de celle de la figure 5 en ce qu'il comporte deux chambres de détente 23A et 23B parallèles et séparées par une paroi mitoyenne 27, et débouchant chacune sur une fenêtre d'évacuation 24A et 24B. Les deux chambres de détente 23A et 23B sont disposées au même niveau suivant un plan vertical, côte à côte.This whistle variant differs from that of the figure 5 in that it comprises two expansion chambers 23A and 23B parallel and separated by a dividing wall 27, and each opening on a discharge window 24A and 24B. Both relaxation chambers 23A and 23B are arranged at the same level in a vertical plane, side by side.

La première chambre de détente 23A est plus longue que la seconde 23B, et elle comporte une première partie 28 (vers la lame du couteau) qui dépasse, dans le sens longitudinal, d'une seconde partie 29 qui débouche dans la fenêtre 24A. La seconde partie 29 présente la même longueur que la seconde chambre de détente 23B. L'unique chambre de compression 21, disposée en amont, débouche dans les deux chambres de détente 23A et 23B.The first expansion chamber 23A is longer than the second 23B, and it has a first portion 28 (towards the knife blade) protruding, in the longitudinal direction, a second portion 29 which opens into the window 24A. The second portion 29 has the same length as the second expansion chamber 23B. The single compression chamber 21, disposed upstream, opens into the two expansion chambers 23A and 23B.

Les chambres de détente 23A et 23B étant de longueurs différentes, elles émettent, par leurs fenêtres d'évacuation respectives 24A et 24B, des sons de fréquences différentes.The expansion chambers 23A and 23B being of different lengths, they emit, through their respective discharge windows 24A and 24B, sounds of different frequencies.

Comme montré sur la figure 8, les fenêtres d'évacuation 24A et 24B ont leur bord aval (proche de la lame) biseauté, pour améliorer le son.As shown on the figure 8 , the evacuation windows 24A and 24B have their beveled downstream edge (close to the blade), to improve the sound.

Les chambres de détente 23A et 23B présentent, dans le plan de la figure 6, des longueurs respectivement de 30 mm et 25 mm, et une largeur de 5 mm. L'épaisseur de la cloison séparatrice 27 est de l'ordre de 1,1 mm.The relaxation rooms 23A and 23B present, in the plan of the figure 6 lengths of 30 mm and 25 mm, respectively, and a width of 5 mm. The thickness of the separating partition 27 is of the order of 1.1 mm.

La figure 7 montre une vue schématique de côté du couteau de l'invention, dans le manche duquel est incorporé un sifflet tel que celui montré en coupe sur la figure 6, et montré aussi sur la figure 8 en coupe selon un plan horizontal H-H (voir figure 7).The figure 7 shows a schematic side view of the knife of the invention, in the handle of which is incorporated a whistle such as that shown in section on the figure 6 , and also shown on the figure 8 in section along a horizontal plane HH (see figure 7 ).

La figure 8 est une vue en coupe similaire à celle de la figure 5, car toutes deux réalisées selon des plans horizontaux, alors que la figure 6 est une vue en coupe selon un plan vertical.The figure 8 is a sectional view similar to that of the figure 5 because both are made in horizontal planes, while the figure 6 is a sectional view along a vertical plane.

Les dimensions des fenêtres d'évacuation 24A et 24B sont identiques, à savoir, en vue de dessus (figure 6) : 5 mm x 5,5 mm.The dimensions of the evacuation windows 24A and 24B are identical, namely, in a view from above ( figure 6 ): 5 mm x 5.5 mm.

Les figures 9A à 9E sont des vues en coupe transversale du manche à différents endroits du manche, selon des plans verticaux, transversaux, successifs, et référencés AA, BB, CC, DD et EE. Le plan AA est le plus proche de la lame.The Figures 9A to 9E are cross-sectional views of the handle at different locations of the handle, according to vertical planes, transverse, successive, and referenced AA, BB, CC, DD and EE. The AA plane is closest to the blade.

Le manche comporte un évidement longitudinal 30, dans un plan vertical, à section quadrangulaire, et destiné à accueillir la lame (non représentée).The handle has a longitudinal recess 30, in a vertical plane, quadrangular section, and intended to accommodate the blade (not shown).

La figure 9A est une vue en coupe selon le plan AA, montrant la première partie 28 de la première chambre de détente 23A, de section carrée (4,8 mm x 4,3 mm).The Figure 9A is a sectional view along the plane AA, showing the first portion 28 of the first expansion chamber 23A, of square section (4.8 mm x 4.3 mm).

La figure 9B est une vue en coupe selon le plan BB, montrant la seconde partie 29 de la première chambre de détente 23A, et la seconde chambre de détente 23B de section carrée (5,3 mm x 4,3).The Figure 9B is a sectional view along the plane BB, showing the second portion 29 of the first expansion chamber 23A, and the second expansion chamber 23B of square section (5.3 mm x 4.3).

La figure 9C est une vue en coupe selon le plan CC, montrant la seconde partie 29 de la première chambre de détente 23A, et la seconde chambre de détente 23B de section carrée (5,3 mm x 4,3 mm). La vue en coupe est située au niveau des fenêtres d'évacuation voisines 24A et 24B, et montre la cloison 27 séparant les deux chambres de détente 23A et 23B.The Figure 9C is a sectional view along the plane CC, showing the second portion 29 of the first expansion chamber 23A, and the second expansion chamber 23B of square section (5.3 mm × 4.3 mm). The sectional view is located at the neighboring discharge windows 24A and 24B, and shows the partition 27 separating the two expansion chambers 23A and 23B.

La figure 9D est une vue en coupe selon le plan DD, montrant la chambre de compression 21, de section rectangulaire (2 mm x 11,5 mm), au niveau du fond de ladite chambre (opposé à l'extrémité 14 du manche).The Figure 9D is a sectional view along the plane DD, showing the compression chamber 21, of rectangular section (2 mm x 11.5 mm), at the bottom of said chamber (opposite the end 14 of the handle).

La figure 9E est une vue en coupe selon le plan EE, montrant la chambre de compression 21 de section rectangulaire (3,5 mm x 11,5 mm), et la lumière 15 traversante dans une direction transversale à l'axe longitudinal du manche.The Figure 9E is a sectional view along the plane EE, showing the compression chamber 21 of rectangular section (3.5 mm × 11.5 mm), and the through-light in a direction transverse to the longitudinal axis of the handle.

Le manche 2 du couteau est en matière plastique thermo formable, telle que par exemple du polyamide (PA) ou du PBT (polybutylène téraphtalate).The handle 2 of the knife is made of thermoformable plastic material, such as for example polyamide (PA) or PBT (polybutylene terephthalate).

Le manche est réalisé par moulage en seul bloc, et comporte deux parties 2A dite gauche et 2B dite droite (sur la base de la figure 8. L'épaisseur de l'évidement central 30 (pour la lame) est d'environ 2,2 mm.The handle is made by single-piece molding, and has two parts 2A so-called left and 2B called right (based on the figure 8 . The thickness of the central recess 30 (for the blade) is about 2.2 mm.

La partie droite 2B du manche inclut le sifflet de l'invention. La chambre de compression, les chambres de détente et les fenêtres d'évacuation sont réalisées lors du moulage par réservation ou autre moyen connu pour réaliser les évidements nécessaires.The right portion 2B of the handle includes the whistle of the invention. The compression chamber, the expansion chambers and the evacuation windows are made during molding by reservation or other known means for making the necessary recesses.

Le sifflet décrit ci-dessus est intégré au corps du manche et est réalisé à l'intérieur de celui-ci.The whistle described above is integrated into the body of the handle and is made inside thereof.

En soufflant dans l'embouchure 19, l'utilisateur crée un flux d'air qui pénètre dans la chambre de compression 21. Du fait de la rampe 26, la pression du flux d'air augmente en sortie de la chambre 21 pour pénétrer, après passage dans la lumière 22, dans la chambre de détente 23, ou les deux chambres de détente 23A et 23B d'où s'échappe l'air ensuite par la fenêtre 24 ou par les deux fenêtres 24A et 24 B. Le fait que les chambres de détente soient de longueurs différentes permet d'émettre des sons par chaque fenêtre ayant des spectres de fréquences différentes, l'un étant plus aigu que l'autre. Le résultat final ne fait qu'accentuer la puissance du son global émit, en l'occurrence perceptible à plusieurs centaines de mètres.By blowing into the mouth 19, the user creates a flow of air which enters the compression chamber 21. Due to the ramp 26, the pressure of the air flow increases at the outlet of the chamber 21 to penetrate, after passing through the lumen 22, into the expansion chamber 23, or the two expansion chambers 23A and 23B from which the air then escapes through the window 24 or through the two windows 24A and 24B. The fact that the relaxation chambers are of different lengths makes it possible to emit sounds by each window having different frequency spectra, one being more acute than the other. The end result only accentuates the power of the overall sound emitted, in this case noticeable at several hundred meters.

Claims (9)

Couteau pourvu d'un manche (2) et d'une lame (3), associé à des moyens du type sifflet et aptes à émettre un son à l'aide d'un flux d'air, lesdits moyens comportant un évidement relié en amont à une embouchure (19), par où ledit flux d'air est introduit, et en aval à une fenêtre d'évacuation (24), et d'autre part une chambre de compression (21) de l'air en aval de l'embouchure (19), et débouchant (par une lumière (22)) dans une chambre d'expansion (23) (ou de détente), elle-même reliée à ladite fenêtre d'évacuation, caractérisé en ce que lesdits moyens sifflet sont intégrés au corps du manche, incorporés à l'intérieur du corps dudit manche, et en ce que le manche (2) est réalisé par moulage, la chambre de compression, les chambres de détente et les fenêtres d'évacuation étant réalisées lors du moulage par réservation ou équivalent, pour réaliser les évidements nécessaires.Knife provided with a handle (2) and a blade (3), associated with means of the whistle type and able to emit a sound by means of an air flow, said means comprising a recess connected in upstream to a mouth (19), through which said flow of air is introduced, and downstream to an evacuation window (24), and secondly a compression chamber (21) of the air downstream of the mouth (19), and opening (through a light (22)) into an expansion chamber (23) (or expansion), itself connected to said discharge window, characterized in that said whistle means are integrated in the body of the handle, incorporated inside the body of said handle, and in that the handle (2) is made by molding, the compression chamber, the expansion chambers and the evacuation windows being made during the molding by reservation or equivalent, to make the necessary recesses. Couteau selon la revendication 1, caractérisé en ce que le manche (2) est réalisé en un seul bloc.Knife according to claim 1, characterized in that the handle (2) is made in one piece. Couteau selon la revendication 1 ou 2, caractérisé en ce que le manche comporte deux parties, une partie gauche (2A) et une partie droite (2B), l'une des parties incluant lesdits moyens sifflet.Knife according to claim 1 or 2, characterized in that the handle comprises two parts, a left part (2A) and a right part (2B), one of the parts including said whistle means. Couteau selon la revendication 1 à 3, caractérisé en ce que la chambre de compression (21) est telle que sa section, en coupe selon un plan orthogonal à l'axe longitudinal du manche, diminue, dans la direction de la chambre d'expansion.Knife according to claim 1 to 3, characterized in that the compression chamber (21) is such that its section, in section along a plane orthogonal to the longitudinal axis of the handle, decreases in the direction of the expansion chamber . Couteau selon l'une des revendications 1 à 4, caractérisé en ce que la fenêtre d'évacuation (24) comporte un bord (25) biseauté du côté opposé à la chambre de compression.Knife according to one of claims 1 to 4, characterized in that the discharge window (24) has a beveled edge (25) on the opposite side to the compression chamber. Couteau selon l'une des revendications 1 à 5, caractérisé en ce que la chambre de compression débouche sur deux chambres d'expansion distinctes (23A, 23B), étanches l'une par rapport à l'autre, et débouchant chacune dans une fenêtre d'évacuation, les deux chambres d'expansion étant de forme longilignes, parallèles et de longueurs différentes, dans la direction du flux d'air.Knife according to one of claims 1 to 5, characterized in that the compression chamber opens on two separate expansion chambers (23A, 23B), sealed with respect to each other, and each opening into a window evacuation, the two expansion chambers being of elongate, parallel shape and of different lengths, in the direction of the air flow. Couteau selon l'une des revendications 1 à 6, caractérisé en ce que les moyens émetteurs de son sont agencés dans le manche de façon que la direction du flux d'air soit parallèle, de préférence colinéaire, à l'axe longitudinal du manche.Knife according to one of claims 1 to 6, characterized in that the sound emitting means are arranged in the handle so that the direction of the air flow is parallel, preferably collinear, to the longitudinal axis of the handle. Couteau selon l'une des revendications 1 à 7, caractérisé en ce que la lame (3) est repliable dans un logement prévu dans le manche qui sépare ce dernier en deux parties contigües face à face, selon un plan longitudinal sensiblement médian du manche, lesdits moyens émetteurs de son étant alors incorporés dans l'une desdites parties.Knife according to one of claims 1 to 7, characterized in that the blade (3) is foldable into a housing provided in the handle which separates the latter into two contiguous parts facing each other, according to a substantially median longitudinal plane of the handle, said sound emitting means then being incorporated in one of said parts. Couteau selon l'une des revendications 1 à 8, caractérisé en ce que le manche est en matière plastique, de préférence thermoplastique et par exemple à base de polyamide (PA) ou du polybutylène téraphtalate (PBT).Knife according to one of claims 1 to 8, characterized in that the handle is made of plastic, preferably thermoplastic and for example based on polyamide (PA) or polybutylene terephthalate (PBT).
EP12305876.0A 2011-07-29 2012-07-19 Knife provided with a whistle Active EP2551072B1 (en)

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FR1156940A FR2978369B1 (en) 2011-07-29 2011-07-29 KNIFE HAVING A MEDIUM SOUND TRANSMITTER BY AIR PASSAGE

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ES2699493T3 (en) 2019-02-11
FR2978369B1 (en) 2014-05-02
EP2551072B1 (en) 2018-09-19
US20210291387A1 (en) 2021-09-23
US20160229069A1 (en) 2016-08-11
FR2978369A1 (en) 2013-02-01
US20130025131A1 (en) 2013-01-31

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