Hydraulic torque converter

Claim 1

A hydraulic torque converter comprising: an impeller; a turbine; a stator designed to take reactive torque; the casing of said impeller; the inner ring of said impeller; the vanes of said impeller secured to said impeller casing and said impeller inner ring; the casing of said turbine; the inner ring of said turbine; the vanes of said turbine secured to said turbine casing and said turbine inner ring; the casing of said stator; the inner ring of said stator; the vanes of said stator secured to said stator casing and said stator inner ring; said vaned members, viz. the impeller, turbine and stator, arranged so that their vanes form a closed circuit for circulation of the flow of working fluid; said flow of working fluid enclosed on the outside by the casings of said vaned members, which casings jointly form an outer toroidal surface of said fluid conduit, the inside enclosure being made up of said inner rings which jointly form the toroidal surface of said fluid circuit; the vanes of at least one of the vaned members having a hydrodynamic profile of varying thickness; the casing of a vaned member having vanes with a hydrodynamic profile, in which casing provision is made of through slots; the inner ring of a vaned member having vanes with a hydrodynamic profile, in which inner ring provision is made of through slots; at least one plate provided in the body of each of said vanes with a hydrodynamic profile; tongues for fixing the vanes with a hydrodynamic profile to said casing and inner ring, which tongues are formed by the elements of said plate, which elements project from the body of the vane and fit into said slots.