Patent ID: 8888430

Claim:
An antitheft locking device ( 11 ), for fixing a wheel to a motor vehicle hub, made in form of a nut or bolt, comprising a body ( 13 ) provided with engagement means ( 21 ) for a complementary key by means of which it is possible to rotate said device, and an associated bushing ( 19 ) freely rotatable around said body ( 13 ), in which at least a radial seat ( 25 ) is provided for at least a retaining element ( 23 ) capable of preventing the axial withdrawal of the bushing ( 19 ) from the body ( 13 ), said seat being obtained partially in the body ( 13 ) of the device and partially in the bushing ( 19 ), wherein that said seat ( 25 ) has a depth varying along the axial direction, wherein when the antitheft device ( 11 ) is assembled, the retaining element ( 23 ) is housed in a distal portion of said seat ( 25 ) with respect to an abutment area ( 27 ) for the bushing, said distal portion being radially defined around the body ( 13 ), partially in the body ( 13 ) of the device ( 11 ) and partially in the bushing ( 19 ), whose size is such as to substantially prevent any radial movements of the retaining element ( 23 ), wherein said seat defines a proximal portion of said seat with respect to the abutment area ( 27 ) inside which the retaining element ( 23 ) is temporarily housed during the assembly of the bushing ( 19 ) on the body ( 13 ), and wherein said element ( 23 ) is housed with a certain radial clearance.