Patent ID: 7044507

Claim:
A lockable and releasable assembly system for two tubular parts ( 1 , 2 ) of the same diameter, for end to end assembly, the system comprising: a first toothed crown ( 10 ), fixed to the end of the first of the two tubular parts ( 1 ), and formed by a determined number N of teeth ( 11 ), whose ends each have a straight radial shoulder ( 12 ), facing outwards; a second toothed crown ( 20 ), fastened to the end of the second of the two tubular parts ( 2 ), formed by the same number N of teeth ( 21 ), whose ends each have an angled radial shoulder ( 22 ), with an angled clamping face ( 23 ), each forming an outward facing helicoidal ramp section, the teeth ( 21 ) of this second toothed crown ( 20 ) being separated by a distance equal to or greater than the width of the teeth ( 11 ) of the first toothed crown ( 10 ), the teeth ( 11 ) of the first toothed crown ( 10 ) each being separated from one another by a distance equal to or greater than the width of the teeth ( 21 ) of the second toothed crown ( 20 ); and a locking ring ( 30 ) composed of a tube section whose internal diameter is bigger than the external diameter defined by the shoulders ( 12 , 22 ) of the two toothed crowns ( 10 , 20 ), and each having a same determined number N of wedges ( 31 , 51 ) and an angled clamping face ( 33 ) that is complementary to the clamping face ( 23 ) of the angled shoulders ( 22 ), which is to say at the same angle as the clamping face ( 23 ) of the shoulders ( 22 ) of the teeth ( 21 ) of the second toothed crown ( 20 ) and at a distance equal to or greater than the width of the teeth ( 21 ) of the second toothed crown ( 20 ), so that they can mesh between the toothed crowns ( 10 , 20 ) and by rotating around the axis of the toothed crowns ( 10 , 20 ), make the teeth of the locking ring fit between the respective shoulders ( 12 , 22 ) of the teeth ( 11 , 21 ) of the two toothed crowns ( 10 , 20 ) until the assembly is locked, wherein the wedges ( 51 ) each have a flexible attachment with the locking ring ( 30 ) to give a degree of freedom to each clamping face ( 13 , 23 ) of the wedges ( 51 ) rotating around the axis of the toothed crowns, the wedges ( 51 ) are each formed by a part separate from the locking ring ( 30 ), the flexible attachment being formed by a reduced section ( 53 ) of the wedge ( 51 ) positioned between the angled clamping face ( 33 ) of the wedge ( 51 ) and a thrust face ( 52 ) of the same wedge ( 51 ) that can receive the thrust via a thrust pad ( 59 ), a thrust pin ( 34 ) actuated by the locking ring ( 30 ), thus defining for each wedge ( 51 ) a flexible attachment ( 54 ) on which the thrust face ( 52 ) and a wedge ( 51 ) body ( 57 ) are located.