FR2664846A1 - UTENSILS HANDLE, SUCH AS KNIVES, INCORPORATING ELASTIC PARTS. - Google Patents

Abstract

The invention is in the field of hand tools. It relates to a utensil such as a professional knife of the kind provided on the one hand with a handle (1) made of rigid material (5) and elastic material (4), and on the other hand with a part functional (2), characterized in that at least one part of elastic material (4) fills at least one recess made in the part of rigid material (5) which represents continuity over the entire length of the handle (1).

Description

The present invention is in the field of hand tools, and it has the

  object a utensil intended primarily for professional use, such as knife, grinder, sharpener, etc. Hand tools are known having a symmetrical functional part extending into a so-called silk part, penetrating inside a handle, said sleeve being composed of a rigid material covered with an elastic material for the comfort of the prehension We can refer to the patent

  US 4386620 (HANDLER) relating to a hair brush.

It is more particularly known

  hand tool handles with the same characteristics

  characteristics of which said rigid material is a plastic material such as those described by patents FR 2611567

  (GARNACHE), GB 2065537 (HILTI) and US 2871899 (COYLE).

  We can also refer to the European patent 0176486

  SANELLI, which describes a hand tool whose functional part

is asymmetrical.

  Some professionals use their tools for an extended period of time and with

  important efforts which requires an excellent

  the tools and the amortization of

  brations generated in the handle, on the other hand.

  However, none of the devices of the prior art has satisfactory ergonomics,

  especially in the case where the functional part is as-

  metric. The purpose of the present invention is to improve the ergonomics of the tools, such as professional knife or chopper, particularly as to the comfort

  handling and gripping them.

According to the invention, a utensil

  corresponding to the pre-cited purpose, such as a profession-

  chopper, of the kind provided on one hand with a handle, and on the other hand with a functional part made integral with the handle by a so-called silk part extending beyond the functional part inside. of the latter, said sleeve being constituted on the one hand by a rigid material and on the other hand by an elastic material for the comfort of the grip, is mainly characterized in that at least a portion of elastic material fills at least one recess formed in the rigid material portion which has a continuity along the entire length

of the handle.

  It will be noted at this stage of the definition of the invention that, while in the sleeves of the prior art the elastic material (elastomer)

  is rather like a layer or coating super-

  On the other hand, according to the invention, the elastomer extends radially up to the core of the sleeve and even, according to a more particular arrangement, the rigid material, plastics material or metal which, depending on the case, appears at the ends or at other points. , is in contact with silk,

  or even pass through it by lights.

  According to a preferred embodiment, the functional part of the utensil

  being asymmetrical, and the utensil being in a horizontal position

  zontale the cutting edge downward, said part of elastic material extends over most of the

lower half of the neck.

  The utensil being made by injection molding a rigid plastic material around the silk, the latter comprising lumens of passage of the material and / or cuttings, in order to make the injected material, the material injected rigid plastic advantageously occupies the anterior parts (miter), upper and posterior of the handle passing through some of the lights, and the elastic material, itself injected afterwards, passes through the others

lights.

  The lower part of the handle being swollen in its middle part, the rigid plastic part preferably has a U-shaped general section both in its width and in its length, with a convex curvature of its upper face so that the back of the sleeve is swollen, and has in its median region along its length a projection lined on either side of grooves, said projection ensiling silk; hence, the elastic material, during the injection,

  is housed on the one hand inside the groove resulting

  aunt of the U shaped conformation of the rigid plastic part and on the other hand around the protrusion

filling the grooves bordering it.

  According to a preferred embodiment, the passage lights of the material practiced through the silk being three in number, one of the lights is located in the middle zone of the handle

  and allows the passage of the rigid plastic material constituting

  killing the projection through the silk, while the other two lights are located on either side of the first and allow the passage of the elastic material

through the silk.

  The present invention will be better understood and details thereof will be apparent to the

  description that will be made of a preferred form of

  embodiment, in relation to the figures of the attached plate, in which: FIG. 1 is a front view

  of a knife according to the present invention.

Figure 2 is a sectional view of

longitudinal axis of the same.

Figure 3 is a section

of the handle according to AA of FIG.

Figure 4 is another section

of the handle according to BB of Figure 2.

  In Figure 1, a knife is provided on the one hand with a handle 1 and on the other hand with an asymmetrical functional part 2, cutting on one side, back of the other, made integral with the handle 1 by a part

  said silk 3 extending beyond the functional part

2 inside the handle.

  The handle 1 comprises firstly a portion of elastic material 4 for the comfort of the grip, swollen in its central zone and which extends over most of the lower half of the handle 1, and partly a part rigid plastic 5 which occupies the anterior parts (miter), upper and

posterior of the race 1.

  In FIG. 2, the plastics 5 and the elastic material 4 being injection-molded around the silk 3, the latter comprises three lumens 6, 6 'and 6 "for the passage of the material and a cutout 7, in order to render

  integral with the silk 3 the injected material.

  The rigid plastics material 5, injected first, is molded in a generally U-shaped shape along its length, with on the one hand a projection 8 situated in its median zone, and on the other hand a convex curvature of its upper face. so that the back of the handle 1 is bulged The rigid plastic material 5 passes through the central lumen 6 and the

  cut 7 practiced in silk.

Then, the elastic material

  injected second, passes through the other lu-

  6 and 6 "and occupies a major part of the recess formed in the lower zone of the rigid plastics material.In FIGS. 3 and 4, the rigid plastics part 5 has a general section in

  U, well characterized at the ends of the handle (see

  gure 4), or even M if we take into account the projection 8 (see Figure 3) and comprises in its central region said projection 8 lined on either side of grooves 9 and 9 'which encases the silk 3 The elastic material 4 is housed on the one hand inside the recess resulting from the U-shape of the rigid plastic part 5 (see Figure 4), and on the other hand around the projection 8 ( see Figure 3), filling the grooves 9 and 9 'which border them. Although a preferred embodiment has been described and shown, it should be understood that the scope of the present invention is not limited to this form but extends to any device

  with the characteristics listed above.

Claims (5)

R E V E N D I C A T IO N S   1. Utensil such as a professional knife, chopper, of the kind provided on the one hand with a handle (1) and on the other hand with a functional part (2) made integral with the handle (1) by a so-called part silk (3) extending beyond the functional portion (2) therein, said sleeve (1) being   consisting of rigid material (5) and elastic material   0 tick (4) for the comfort of the grip, characterized   in that at least one part made of elastic material fills at least one recess formed in the part made of rigid material which has a   continuity over the entire length of the handle.   2. Utensil according to claim 1, characterized in that, the functional part   nelle (2) of the utensil being asymmetrical, said part of elastic material (4) extends over the major   part of the lower half of the handle.   3. Utensil according to claim 2 produced by injection molding of a rigid plastic material (5) around the silk (3) the latter comprising lumens (6, 6 'and 6 ") for the passage of the material and / or cut-outs (7) in order to make the injected material integral with the silk (3), characterized in that the injected rigid plastic material (5) occupies the anterior (upper) and upper (upper) parts of the handle by passing through some of the lights (6), and in that the elastic material (4) itself subsequently injected, passes to   through the other lights (6 and 6 ").   4. Utensil according to claim 2 wherein the lower part of the handle (1) is bulged in its middle part, characterized in that the rigid plastic part (5) has a general U-shaped section both in its width than in its length and comprises in its median zone along its length a protrusion (8) bordered on either side of groove (9 and 9 ') said projection (8) embedding the silk (3), where it follows that the elastic material (4) during its injection, is housed on the one hand inside the groove resulting from the U-shaped conformation of the rigid plastic part (5) and on the other hand around the protrusion (8)   filling the grooves bordering it (9 and 9 ').   5. Utensil according to claim 3, characterized in that the   lights (6, 6 'and 6 ") for the passage of   3 through the silk (3), one of the lights (6) is located in the middle zone of the handle (1) and allows the passage through the silk (3) of the plastic material rigid (5) constituting the projection (7) while the other two lights (6 'and 6 ") are located on either side of the first (6) and allowing the passage through   silk (3) of the elastic material (4).