Patent ID: 8166678

Claim:
A tooth for being connected to an adaptor by a retaining system, said tooth having a front wear part or tip intended for being in contact with dirt and stones, and a rear coupling part, said rear coupling part is a projection or nose comprising: a lower base body, with a section of at least four sides with rounded vertices and with an upper surface and a lower surface, an upper appendage arranged on the lower base body, with an upper surface and a lower surface forming an upper base and lower base of a trapezoidal section, respectively, the lower base being narrower than the upper surface of the lower base body and being centered with respect to the upper surface of the lower base body, a free end opposite to the front wear part or tip, and an end opposite to the free end and attached to the tip of the tooth, wherein the upper and lower surfaces of the lower base body progressively separate from one another from a point close to or at the free end of the nose, the section of said lower base body increasing in the direction of the tip of the tooth until defining a maximum gap corresponding with the maximum height of the lower base body, and the upper and lower surfaces of the appendage progressively separate from one another from a point close to or at the free end of the nose, the section of said appendage increasing in the direction of the tip of the tooth until determining a maximum gap defining the maximum height of the appendage, such that the union of the maximum heights of the lower base body and of the appendage determine a line of maximum height of the nose of the tooth, such that after said line of maximum height of the nose of the tooth, the upper surface of the appendage and the lower surface of the lower base body begin to converge towards the tip of the tooth until the union of both surfaces at a union line, the union line of both surfaces being located on the side of the wear part of the tooth and in front of the line of maximum height of the nose of the tooth.