The invention relates to the field of cutlery and it has as an object a relief of a blade of a cutting tool, in particular of a knife.
There are known profiles which are arranged on the blades in order to level their cutting loss due to use and wear, which profiles are constituted by microtoothing which is composed of a plurality of incurved surfaces having parallel generatrixes, called microbevels, defining with one of the side faces of the blade a plurality of respective microcutters.
The inconvenience of the conventional microtoothing, formed by a plurality of short microbevels arranged along the blade, is based on the fact that the resulting short microcutters form a toothing which induces a shredding of the material to be cut up, where the tool therefore practically no longer cuts and, finally, being of a delicate use since the material, in particular meat, is soft.
In order to remedy this inconvenience, the efforts of the innovators has been directed to the refining of a microtoothing composed of short microbevels and of long microbevels, succeeding each other alternatingly, wherein the first shred the matter while the second cut the matter. One could in particular refer to the document EP-A-0220362 which describes a tool blade comprising such a microtoothing. In addition, the blade carries along its other face a bevel for reinforcing its cutting characteristic.
The result obtained is satisfying with regard to the improvement of the performance of the tool for cutting the matter but retains nevertheless another general drawback of microtoothed tools, namely to make their utilization delicate based on the presence of the microbevels which induce a tendency of the blade to incline itself by turning its blade edge toward the microbevelled face.
In addition, tools are known which carry a microtoothing composed of a plurality of short microcutters, successively formed by the short microbevels arranged respectively oppositely on each one of the side faces of the blade, in order to confer to the tool a natural stability during the time of its utilization.
The use of this type of tool, which is of relatively ancient origin, has been rapidly abandoned because of its high manufacturing cost, brought about by the difficulty of placing oppositely the microbevels arranged on the one and the other face of the blade, resulting in an unsatisfactory cut based on the cutter absence on the blade.