Patent ID: 8800178

Claim:
A coupling system for coupling a male element to a female element of the type used in excavators, said male element and female element detachably coupled to one another with a securing system fixing the coupling position between said male element and female element, wherein: the female element comprises a cavity for coupling with the male element, said cavity having a first projection extending towards an inside of the cavity, said first projection having a convex surface; the male element comprises a nose for coupling with the female element, said nose having at least one concave recess in at least one surface of the nose and facing the first projection of the female element, a space remaining between the convex surface of the first projection of the female element and the concave recess of the male element; and the securing system comprises at least one body or pin with a concave top surface and a convex bottom surface complementary to the concave recess of the male element, the body or pin configured to be housed in the space between the male element and the female element when the body or pin is inserted in a coupling direction, a first locking area being created between the convex surface of the female element and the concave top surface of the pin or body of the securing system.