Tool for paving plaster

Abstract

The utility model relates to a tool for paving plaster, in particular to a tool (100) for paving plaster on a surface (S), which comprises a gripping device (300) associated with a plate (200), the plate (200) extends in a first direction and a second direction orthogonal to the first direction, the plate comprises a working surface (201) and a gripping surface (202), and the gripping surface (202) is arranged on the working surface (201). The utility model relates to a gripping device for a working surface (201), said working surface (201) having, in a second direction, a recessed profile extending in a first direction, said plate (200) being made of an elastically deformable plastic material, said gripping device comprising a gripping portion (303) formed by at least one strut (301) from which a handle (302) extends and by which the gripping portion (303) is fixed to the plate (200), characterized in that the gripping portion (303) is fixed to the working surface (201). The tool includes a flaring at the junction between the strut and the plate.

Description

Technical Field

[0001] The present invention relates to the field of tools for applying pastes, such as plaster or glue, to walls, floors or ceilings or to structures attached to walls, floors or ceilings. Background Art

[0002] It is known that a trowel 1 is used to apply plaster to a wall. Figure 1 As shown in , such a trowel consists of a thin plate 2 or blade to which is attached a handle 3. The thin blade may have various shapes, such as rectangular or generally triangular.

[0003] Currently, the thin blade is made of metal or metal alloy, and the handle is attached to the thin blade or to an intermediate base attached to the thin blade by welding, brazing or gluing.

[0004] The use of this trowel is to spread the plaster by placing an optimal amount of plaster on the wall and moving the trowel. For this reason, the user tilts the trowel relative to the surface of the wall so as to spread the plaster while giving it the desired thickness.

[0005] However, it is not simple to measure the required thickness. One solution is to form a serrated serration 4 on one side of the thin blade (more specifically, on the side of the thin blade that comes into contact with the wall during the operation of plastering). This serration allows for better plaster thickness control because it allows the plaster to partially pass through the serration opening. Furthermore, when applying and spreading the plaster, the user tilts the trowel to different degrees. Thereby, the user can better control the thickness of the plaster on the wall.

[0006] However, this prior art trowel has several disadvantages.

[0007] Firstly, the introduction of serrations makes the trowel easier to use, but it does not guarantee a consistent plaster thickness. In fact, the maximum plaster thickness can be achieved when the board is perpendicular to the surface to be plastered. Therefore, tilting the board relative to the surface to be plastered will change this thickness. The result is that when the plaster is spread, changes in the inclination will result in changes in the thickness applied.

[0008] Secondly, the contact and friction between the saw teeth and the wall causes wear on the saw teeth. This wear makes the saw teeth less regular and leads to less precise control.

[0009] This tooth shape also makes cleaning the trowel less straightforward. In fact, with a normal trowel, cleaning is not easy, because the corners of the thin blade can hit the corners of the bucket or get caught in the sponge, causing damage to the bucket and / or the sponge, as well as damage to the corners. The presence of the serrations increases the risk of damaging the sponge.

[0010] As a result, these wear or degradation issues result in the equipment needing to be replaced frequently.

[0011] This wear makes the teeth more pointed and can also pose a hazard to the applicator, particularly during the cleaning process.

[0012] Similarly, the friction of metal on a rough substrate is harsh and can become uncomfortable to the applicator.

[0013] Due to their metal composition, prior art trowels are heavy to manipulate. Utility Model Content

[0014] The present invention therefore proposes to solve these drawbacks by providing a trowel which effectively controls the thickness of the plaster to be spread, while ensuring greater comfort in use and low tool costs.

[0015] To this end, the invention relates to a tool for spreading plaster on a surface, the tool comprising a gripping device associated with a plate extending in a first direction and in a second direction orthogonal to the first direction, the plate comprising a working surface and a gripping surface, the working surface having a concave profile extending in the first direction in the second direction, the plate being made of a flexible or elastically deformable plastic material, the gripping device comprising a gripping portion formed by at least one support from which a handle extends, the gripping portion being fixed to the plate by means of the at least one support, characterised in that the tool comprises a flaring at the junction between the support and the plate.

[0016] The invention has the advantage of allowing the deformation of the flexible plate to be limited by the flaring. In particular, when the applicator uses the tool in an inclined position, local shear forces are transmitted to the plate at the junction of the handle closest to the contact line with the surface to be plastered. At the same time, a traction force is applied at the junction of the handle farthest from the contact line with the surface to be plastered. This flaring makes it possible to stop or increase rigidity locally, which makes it possible to limit the deformation of the plate under the application of the force transmitted by the handle. This prevents excessive stresses on the plate, which would otherwise be damaged. The invention prolongs the tool life while improving efficiency.

[0017] According to one example, the profile of the plate in the second direction includes at least a first portion and a second portion.

[0018] According to one example, the first portion is rectilinear and the second portion is curved.

[0019] According to one example, the first portion is rectilinear and the second portion is rectilinear, the first portion and the second portion being secant.

[0020] According to one example, the segments are arranged such that the working surface has a radius of curvature making it concave, the radius of curvature being constant along the second direction.

[0021] According to one example, the gripping surface has a radius of curvature making it convex, the radius of curvature being constant along the second direction.

[0022] In one example, the radius of curvature of the gripping surface is equal to the radius of curvature of the working surface.

[0023] According to an example, the recess profile is constant in the first direction.

[0024] According to one example, the plate further comprises serrations, the serrations extending at least on one side of the plate extending along the first direction. The serrations may also extend on one side of the plate extending along the second direction.

[0025] According to one example, the flares are formed by gaskets inserted between the pillars and the plate.

[0026] According to one example, the flare is formed by a flared shape of the strut.

[0027] According to one example, the flare is formed by an extra thickness arranged on the plate, in particular formed integrally with the plate.

[0028] According to one example, the cushion includes a hollow portion into which the pillar is inserted.

[0029] According to one example, the gasket includes a surface in contact with the plate, the shape of the surface substantially matching the shape of the plate.

[0030] According to one example, the flare comprises a surface mounted against a corresponding surface (optionally against two corresponding surfaces) formed on the pillar or on the plate to ensure the positioning of the gripping device on the plate. The abutment contact surface protrudes above the gripping surface of the plate, in particular vertically. This surface is preferably a closed surface along the perimeter of the flare.

[0031] According to one example, the gripping device comprises two struts between which the handle extends.

[0032] According to one example, a gripping device includes a first strut coupled to a handle and a second strut connected to the first strut by a rod.

[0033] According to one example, the gripping device is attached to the plate by gluing, fitting or screwing.

[0034] According to one example, the elastically deformable plastic material has a flexural Young's modulus between 25 and 2300 MPa, preferably between 25 and 250 MPa.

[0035] According to one example, the elastically deformable plastic material is selected from a list including: TPO (thermoplastic olefin elastomer), TPV (elastomeric alloy), PVCE (polyvinyl chloride), SEBS (polystyrene-b-poly(ethylene-butylene)-b-polystyrene), NBR (butadiene-acrylonitrile copolymer), PEBA (polyether block amide), EPDM rubber (ethylene-propylene-diene monomer). BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Other features and advantages will be apparent from the following description. The following description is indicative and non-limiting (with reference to the accompanying drawings), in which:

[0037] - Figure 1 is a schematic diagram of a tool according to the prior art;

[0038] - Figure 2 is a schematic diagram of a tool according to the present invention;

[0039] - Figure 3 and 4 , 5a, 5b, 5c and 6 are schematic diagrams of two forms of the plate of the tool of the present invention;

[0040] - Figure 7 is a schematic diagram of a tool according to the invention provided with teeth;

[0041] - Figure 8 is a schematic diagram of the placement of a tool according to the prior art and a tool according to the invention relative to a surface to be plastered;

[0042] - Fig. 9 and Fig.10 is a schematic diagram of an example of a gripping device of a tool according to the present invention.

[0043] - Figures 11 to 17 is a schematic diagram of a device for gripping a tool provided with a flaring according to the invention.

[0044] - Fig.18 and 19 is an exploded schematic diagram of a tool according to the present invention. DETAILED DESCRIPTION

[0045] Figure 2 and Figure 3 A tool 100 for applying a coating according to the present invention is shown. The coating is applied to a surface of a wall, floor or ceiling, or to a structure attached to the wall, floor or ceiling. The tool 100 comprises a plate 200 for applying the coating, with gripping means 300 associated with the plate to enable a user to manipulate the tool. The tool 100 may be a single-handed tool, or a large two-handed tool.

[0046] The plate of the tool 200 extends in a first direction, called length, and in a second direction, called width, orthogonal to the first direction, so as to obtain a generally rectangular shape. Obviously, the length of the plate 200 is greater than the width. This plate 200 comprises a working surface 201 on which the plaster is placed and which is used for spreading the plaster, and a gripping surface 202 to which the gripping means are attached.

[0047] The plate 200 has a specific design. To achieve this, the working surface 201 is designed to be non-linear. More specifically, the working surface 201 is designed to have a concave profile in the second direction. This concave profile can be defined as having a space E between the working surface of the plate 200 and a plane P passing through the end of the plate, such as Figure 4 As can be seen in FIG. 1 , this plane P can be, for example, a surface to be plastered.

[0048] In the first embodiment, the section of the plate 200 along the second direction includes at least a first portion 200a and a second portion 200b.

[0049] according to Figure 5a In a first example as can be seen in FIG. 2 , the first portion 200a is rectilinear and the second portion 200b is rectilinear, the first portion and the second portion being secant.

[0050] Preferably, the first portion on which the gripping means is arranged extends over a greater portion of the board than the second portion. For example, the first portion extends over at least 70%, preferably at least 80%, preferably at least 90%, and even more preferably at least 95% of the width of the board 200.

[0051] The angle between the first portion and the second portion will be between 90° and 135°.

[0052] according to Figure 5b In the second example, the section of the plate in the second direction further comprises a third portion 200c which is rectilinear and adjacent to and secant to the first portion. Thus, the tool 100 may be arranged such that the second portion 200b and the third portion 200c are not inclined in the same manner relative to the first portion 200a.

[0053] according to Figure 5c In a third example as can be seen in FIG. 2 , the first portion 200a is straight and the second portion 200b is curved.

[0054] In the second embodiment, the working surface 201 of the plate 200 is arranged to include a radius of curvature. This radius of curvature is designed so that the working surface 201 can be concave. The working surface 201 of the plate 200 is designed so that the radius of curvature is constant in the first direction.

[0055] In both embodiments, it should be understood that the recessed profile is constant or non-constant in the second direction. Figure 5a In the first example, the non-constant concave profile means that the first portion 200a and the second portion 200b are secant along the second direction, but the angle formed by these portions may vary. In the case of the second embodiment, where the working surface 201 of the plate 200 is curved and has a radius of curvature, it will be understood that this radius of curvature may be uniform or non-uniform. A uniform radius of curvature means that the entire profile across the working surface has the same radius of curvature.

[0056] The gripping surface 202 may be designed to be flat, such as Figure 3 As shown in , or designed to have a radius of curvature, such as Figure 6 In the case where the gripping surface 202 has a radius of curvature, this would be defined such that the gripping surface 202 is concave, ie the gripping surface 202 and the working surface 201 are parallel.

[0057] This arrangement of the working surface 201 of the plate 200 is accompanied by a specific choice of the material from which the plate is formed. The plate is made of a flexible material, preferably a plastic. For example, the material will be selected from a list including the following materials: TPO (thermoplastic olefin elastomer), TPV (elastomeric alloy), PVCE (polyvinyl chloride), SEBS (polystyrene-b-poly(ethylene-butylene)-b-polystyrene), PEBA (polyether block amide), EPDM (ethylene-propylene-diene monomer) rubber, NBR (butadiene-acrylonitrile copolymer, also known as "nitrile rubber"). Of course, the above list of elastomeric materials is not restrictive, and other plastics can also be used depending on the design or thickness.

[0058] Therefore, the material used is a plastic with a Young's modulus in bending between 25 and 2300 MPa, preferably between 25 and 250 MPa. This material is advantageously elastically deformable, that is to say, the material can be deformed under the effect of stress and can return to its original shape when the stress is released.

[0059] This material can also be selected according to various properties, such as 0.3 to 4MPa.m 0.5 Varying fracture toughness, or Shore A75-A90 or D25-D40 hardness. The use of such a material reduces the force required for spreading and reduces noise. Accompanying this noise reduction is a change in the nature of the noise: its frequency range changes, becoming less sharp. This results in improved ease of use.

[0060] Furthermore, the plate 200 of the tool according to the present invention may also include saw teeth 400, such as Figure 7. This sawtooth 400 consists of teeth 401 of a sawtooth shape, arranged on one side extending in a first direction. The teeth 401 of this sawtooth 400 are used to control the amount of plaster applied and to make the board 200 protrude in the extension of the working surface. In the case where the gripping surface 202 and the working surface 201 are curved and parallel, the teeth are arranged to extend in the extension of the gripping surface 202 and the working surface 201.

[0061] In the case of the first embodiment, the teeth 204 of the sawtooth will advantageously be formed at the second portion 200b.

[0062] In the second embodiment, each tooth 401 comprises a front face 402 and a rear face 403, the front face 402 being in extension of the working surface 201 of the plate 200. It will thus be understood that in the case of a flat gripping surface 202, the teeth 401 of the serration 400 are arranged so that the front face 402 of each tooth extends in extension of the working surface, while the rear face 403 of each tooth 401 is not in extension of the gripping surface 202. The rear face of each tooth 401 may be formed so that a flange is present on the gripping surface 202, or so as to obtain a connection with said gripping surface 202.

[0063] These teeth 401 may protrude from the plate 200, or they may be produced by cutting the plate 200. In the case of protruding teeth 401, the surface area of ​​the teeth 401 is added to the surface area of ​​the plate 200, while in the case of cut teeth, the surface area of ​​the plate 200 is reduced by the surface area between the teeth.

[0064] If the gripping surface 202 and the working surface 201 of the plate have the same radius of curvature and are parallel, the front face 402 and the rear face 403 of each tooth 401 extend in line with the working surface and the gripping surface, respectively.

[0065] In both cases, the teeth 401 will extend substantially straight and the ends of each tooth 401 may be thinned and rounded.

[0066] The teeth 401 of the sawtooth 400 may all be the same or different. The spacing between the teeth may be regular or irregular. The size and spacing of the teeth vary depending on the requirements, the plaster to be applied and the size of the tool. The teeth may be square or rectangular, or any shape, such as triangular or with rounded tips.

[0067] The spreading tool 100 has a plastic plate 200 with a non-planar working surface 201 and this configuration of teeth 401 results in a more consistent spreading of the plaster while making the tool more comfortable to use.

[0068] This plaster spreading tool 100 is used by applying plaster to the surface S to be plastered and then spreading it. To this end, the tool 100 is placed by positioning the working surface 201 opposite the surface to be plastered S, the working surface 201 being inclined at an angle of less than 90° to the surface to be plastered. Then, the tool 100 (i.e. the trowel) is moved to spread the plaster. The cleverness of the design according to the invention lies in the curvature of the working surface 201 so that there can be an angle between the plane of the teeth 401 and the plane O that is orthogonal to the plane of the surface to be plastered S. In fact, as in Figure 8 As can be seen in FIG. 1 , the positioning of a tool 1 according to the prior art and the positioning of a tool 100 according to the invention are shown. The prior art tool 1 is shown with its gripping surface positioned at an angle β1 relative to the surface S to be plastered. Assuming that the plate 2 is flat and the teeth 4 extend rectilinearly in the same plane as said plate 2, the teeth form an angle α1 with a plane orthogonal to the surface S to be plastered.

[0069] In the case of a first embodiment of the invention, the example comprises a second portion 200b whose plane is secant to the plane of the first portion, allowing the teeth 401 to form an angle α3 with an orthogonal plane O on the surface S to be plastered that is smaller than the angle α1 formed with a completely flat plate 2 .

[0070] In the case of the tool 100 according to the second embodiment or the third example of the first embodiment of the invention, this tool 100 is shown angularly positioned at the same angle β1 relative to the surface to be plastered, by a tangent to the gripping surface. Assuming that the working surface 201 has a curvature and that the teeth 401 extend rectilinearly in the extension of the working surface, the teeth 401 form an angle α2 with the orthogonal plane O of the surface S to be plastered. However, the curvature of the working surface 201 of the tool 100 according to the invention results in an angle α2 that is lower than the angle α1. Therefore, for the same angular position of the tool 100 relative to the surface to be plastered, the teeth 401 of the plate 200 according to the invention have an angular position at the surface to be plastered that is closer to the orthogonal plane O than the teeth 4 of the tool 1 according to the prior art. The thickness of the plaster applied using the tool 100 according to the invention is therefore also greater.

[0071] Furthermore, during the application of the plaster, the plate 200 deforms. This deformation advantageously allows the teeth 401 of the sawtooth 400 to maintain approximately the same angular position on the surface to be plastered relative to the orthogonal plane O. In practice, the plate 200 is made of a plastic material having elastic deformation properties. However, during the application of the plaster, the friction between the surface to be coated and the plate 200 generates stresses on the plate 200, the elastic properties of which allow it to deform elastically. This deformation tends to enable the teeth 401 to maintain a similar angular position relative to the surface to be plastered S, so that the thickness of the plaster applied is approximately constant, with small variations in thickness.

[0072] In a first variant of the second embodiment, the plate 200 of the tool 100 according to the invention is designed to have an optimized flexibility. For this purpose, this variant proposes a plate 200 whose deformation is adjustable. For this purpose, this variant proposes a plate 200 with a variable thickness. This variable thickness already exists in the variant in which the working surface 201 of the plate has a radius of curvature and the gripping surface 202 is flat. However, the present variant uses the variable thickness property to locally vary the stiffness and thus the response to stress, given that the greater the thickness, the higher the stiffness of the plate and therefore the harder it is to deform.

[0073] This variant makes it possible to control the deformation of the plate 200 and thus its behavior when plastering. In this way, the extra thickness of the plate can be provided in areas where reinforcement is required, for example, in the central part of the plate 200, making it more rigid and less deformable than the area comprising the serrations 400.

[0074] To use the tool, a gripping device 300 is used. These gripping devices 300 can be of various types.

[0075] The gripping device 300 comprises at least one support 301 from which a handle 302 extends to form a gripping portion 303. In the case of a single support 302, the latter makes it possible to form an L-shaped gripping portion 303, such as Fig. 9 This L-shaped gripping portion 303 may be arranged on the plate 200 so as to extend along the first direction or along the second direction (ie, at an angle of 90° to 150° relative to the first direction).

[0076] In the case where there are two pillars 301, the handle 302 can be connected to the two pillars, which makes it possible to form a Fig.10 Visible U-shaped grip 303. This U-shaped grip may be arranged on the plate 200 so as to extend in a first direction.

[0077] The pillars comprise contact areas at their ends, by means of which the grip is attached to the plate 200. The pillars 301 have a cross section which has a circular or rectangular or square shape, or any other possible form, such as hexagonal or oval. These pillars 301 have areas in contact with the plate 200.

[0078] The gripping device may be made of various materials, such as for example wood or metal or plastic.

[0079] According to the invention, the paving tool 100 comprises a flare 500 at each joint between the gripping device 300 and the board 200, such as Figures 13 to 17 As seen in.

[0080] In a first embodiment, the flare 500 is formed by at least one liner 501, such as Fig. 9 As shown in . Pads 501 are provided at each interface of the gripping device and the plate 200 .

[0081] The pad 501 is made of wood, metal or metal alloy or plastic.

[0082] The pad 501 is sandwiched between the gripping device and the plate. The pad 501 is in the form of a plate. The pad 501 has a circular or rectangular or square shape, or any other possible shape, such as a hexagonal or oval shape. Preferably, the pad 501 has a shape similar to or the same as the shape of the cross section of the pillar 301.

[0083] like Fig.14 and 15 As can be seen in the figure, the plate optionally has a hollow portion 502 forming a notch into which the pillar 301 can be partially inserted. This hollow portion can be all the way through. This hollow portion 502 provides a surface protruding from the gripping surface of the plate, which can contact the pillar in a lateral abutment to limit movement, thereby ensuring the positioning of the gripping device on the plate.

[0084] In the second embodiment, the flare is formed by a flared shape 503 of the support 301 at the contact area of ​​the support with the plate 200, such as Fig.12 As seen in.

[0085] In the third embodiment, the flare 500 is arranged at the plate 200, such as Fig.13 As can be seen in FIG. 200, the plate 200 comprises a local extra thickness 505. This local extra thickness 505 is located at the position where the gripping device 300 is fastened. This extra thickness 505 has a surface area greater than the surface area of ​​the contact area of ​​the pillar that cooperates with the extra thickness. This extra thickness 505 may comprise a hollow portion in which the pillar is placed.

[0086] Of course, the flare 500 can be formed by a combination of the first, second and third embodiments. It can therefore be understood that the flare can be formed by the extra thickness 505 at the plate 200 and the flared shape 503 of the pillar 301. The flare can also be formed by the extra thickness at the plate and the pad, or by the flared shape of the pad and the pillar, or by the extra thickness of the plate 200, the pad and the pillar having the flared shape.

[0087] The flaring makes it possible to limit the deformation of the plate 200. More specifically, the flaring makes it possible to limit the increase in the radius of curvature of the plate 200. This limitation is achieved by acting as a stop that prevents deformation of the plate 200 and / or increases the rigidity of the plate 200, which limits the deformation of the plate 200 for a given applied stress.

[0088] The mounting of the gasket 501 between the plate 200 and the gripping device 300 can be done in different ways.

[0089] The first way includes bonding the pad 501 to the plate 200 , and bonding the gripping device 300 to the pad 501 .

[0090] A second way consists in gluing the gasket 501 to the plate 200 while screwing the gripping device 300 to the plate. To this end, the gasket is provided with an opening that allows the screw to pass.

[0091] A third way consists in screwing the plate 200 onto the gripping device 300 while passing through the gasket 501 .

[0092] For screwing, the plate is arranged so that the screws do not hinder the spreading of the plaster, and then the plate is partially hollowed out.

[0093] Any other mechanical fastening technique is contemplated, such as nesting.

[0094] When the flaring is arranged at the gripping device 300 or the plate 200 , the fastening is performed by gluing or screwing the plate 200 to the gripping device.

[0095] A fourth way consists in inserting a gasket 501 between the plate 200 and the gripping device 300 so that the gasket 501 is clamped between the plate and the gripping device. It should then be understood that the gasket 501 comprises an opening through which a screw passes to screw the plate to the gripping device. The opening is such that it has no threads after the screw passes through. The gasket 501 is then clamped between the plate 200 and the support 301.

[0096] In one variation, the pad 501 or the strut flare has a face in contact with the plate, the curvature of which is the same as the curvature of the face of the plate in contact with the pad, i.e. the gripping surface 202 of the plate. It is thus understood that if the plate 200 has a curved gripping surface 202, the surface of the pad in contact therewith will also be curved, having the same curvature.

[0097] This variant makes it possible to shape the pad with the curvature of the gripping surface 202, so as to prevent the placement of the pad from disturbing the shape of the board. Indeed, if the face of the pad 501 is rectilinear and the visible surface 202 of the board 200 is curved, the fastening of the pad 501 to the board 200 may cause a deformation of said board 200 and therefore a change in its behavior and performance.

[0098] In a variant of the gripping device with a single support, the tool comprises at least two flares 500, in particular in the form of pads 501, such as Fig.17As shown in . It can be understood that one flare 500 or pad 501 is formed on the support 301 and the plate 200 or inserted between the support 301 and the plate 200, and one pad 501 is free. This free pad 501 is used to make the effect of the pad uniform.

[0099] Indeed, in the case of a single support 301 , a single pad risks undermining the stability of the deformation of the plate 200 , since there will only be a single pad and this support 301 will generally be off-centre.

[0100] The presence of this second pad 501 therefore makes it possible to disperse the influence of said pad 501 on the plate 200 .

[0101] The free pad 501 may be connected to the pad 501 sandwiched between the support post 301 and the plate by a connecting rod 506 .

[0102] according to Fig.18 and Fig.19 In the embodiment shown in , the tool 100 further comprises: a flare in the form of a flared shape 503 of the pillar 301, in the extension of which the handle 302 is located; and a flare in the form of a free pad 501, which is connected to the flared shape 503 of the pillar 301 by a rod 506, which extends substantially in the same direction as the handle 302. The plate 200 further comprises two portions 204, each of which is formed on the gripping surface 202 in the form of an additional thickness. These portions 204 serve as studs 205.

[0103] The liner 501 and the flared shape 503 each include a surface 5001 (visible in a partial section of the liner 501) which is arranged in a face in contact with the gripping surface 202. These surfaces 5001 are formed to contact and abut against the portion 204 serving as the stud 205 in the installed state of the tool. It will be appreciated that Fig.19 As seen in FIG. 5 , the stud 205 engages with the gasket 501 and the flared shape 503 .

[0104] The cooperation between the surface 5001 of the flare 500 and the stud 205 prevents any lateral movement of the gripping device 300 during use of the tool. The connection between the gripping device 300 and the plate 200 is provided by a screw 600 which passes through the plate approximately at the center of each flare having an extra thickness 5051 and is received in a hole corresponding approximately to the center of the pad 501 and the flared shape 503.

[0105] Of course, the present invention is not limited to the embodiments shown but is susceptible to various modifications and variations which will be apparent to those skilled in the art.

[0106] Thus, it is conceivable that the plate may have various shapes (such as a triangle) and may have various sizes. Thus, the tool according to the invention may have a length of about 30 cm for a width of about 15 cm, or a length of approximately 60-100 cm for a width of about 30-45 cm.

[0107] Additionally, the teeth can be designed to run along one side of the board width, allowing the tool to be used in two different ways.

[0108] In addition, a support 301 can be separated at its junction with the plate. In this case, this support 301 includes two contact areas. Each contact area of ​​the same support can have its own flare or have a common flare, which is a flare of the pad shape or an extra thickness of the plate.

Claims

1. A tool for spreading plaster on a surface, comprising a gripping device associated with a plate, the plate extending in a first direction and in a second direction orthogonal to the first direction, the plate comprising a working surface and a gripping surface, the working surface having a concave profile in the second direction extending in the first direction, the plate being made of an elastically deformable plastic material, the gripping device comprising a gripping portion, the gripping portion being formed by at least one support, a handle extending from the at least one support, and the gripping portion being fixed to the plate by the at least one support, characterized in that The tool includes a flare at a junction between the post and the plate. 2 . The tool according to claim 1 , wherein the profile of the plate in the second direction comprises at least a first portion and a second portion.

3. The tool of claim 2, wherein the first portion is linear and the second portion is curved.

4. The tool of claim 2, wherein the first portion is linear and the second portion is linear, the first portion and the second portion being secant.

5. The tool of claim 1, wherein the plate is arranged so that the working surface has a radius of curvature which makes it concave, the radius of curvature being constant in the second direction.

6. The tool of claim 5, wherein the gripping surface has a radius of curvature making it convex, the radius of curvature being constant in the second direction.

7. The tool of claim 5, wherein the radius of curvature of the gripping surface is equal to the radius of curvature of the working surface.

8. The tool of claim 5, wherein the recessed profile is constant in the first direction.

9. The tool of claim 1, wherein the plate further comprises serrations extending on at least one side of the plate extending in the first direction.

10. The tool of claim 1, wherein the flare is formed by a spacer inserted between the support post and the plate.

11. The tool of claim 1 , wherein the flare is formed by a flared shape of the strut.

12. The tool of claim 1, wherein the flare is formed by additional thickness disposed on the plate.

13. The tool of claim 10, wherein the pad includes a hollow portion, the pillar being inserted into the hollow portion.

14. The tool of claim 10, wherein the pad includes a surface that contacts the plate, the surface having a shape that substantially matches a shape of the plate.

15. The tool of claim 1, wherein the gripping arrangement includes two struts, the handle extending between the two struts.

16. The tool of claim 1, the flare comprising a surface mounted to abut a corresponding surface formed on the support or on the plate, the abutment contact surface extending protrudingly above a gripping surface of the plate.

17. The tool of claim 1, wherein the gripping device is attached to the plate by gluing or screwing.

18. The tool of claim 9, wherein: The serrations also extend on the other side of the plate extending in the second direction.

19. The tool of claim 12, wherein: The flare is formed by extra thickness integral to the plate.

20. The tool of claim 16, wherein: The surface is mounted against two corresponding surfaces formed on both the pillar and the plate.

21. The tool of claim 16, wherein: The abutment contact surface extends perpendicularly above the gripping surface of the plate.

Images