Patent ID: 7918739

Claim:
A transmission joint ( 1 , 1 ′, 1 ″, 1 ′″) for angularly connecting a first member ( 2 , 2 ′, 2 ″) and a second member ( 4 , 4 ′, 4 ″, 4 ′″), and comprising at least one coupling member ( 5 a , 5 b ; 5 a ′, 5 b ′; 5 a ″, 5 b ″; 5 ′″) interposed functionally between said first and second members ( 2 , 2 ′, 2 ″; 4 , 4 ′, 4 ″, 4 ′″) and extending about an axis (A); said coupling member ( 5 a , 5 b ; 5 a ′, 5 b ′; 5 a ″, 5 b ″; 5 ′″) comprising: a first portion ( 6 , 6 ′, 6 ″, 6 ′″) connectable angularly to said first member ( 2 , 2 ′, 2 ″); a second portion ( 7 , 7 ′, 7 ″, 7 ′″) connectable angularly to said second member ( 4 , 4 ′, 4 ″, 4 ′″) and located radially outwards of said first portion ( 6 , 6 ′, 6 ″, 6 ′″); and an intermediate portion ( 8 , 8 ′, 8 ″, 8 ′″) interposed radially between said first and second portions ( 6 , 6 ′, 6 ″, 6 ′″; 7 , 7 ′, 7 ″, 7 ′″) and elongated in a direction (D) crosswise to said axis (A); said intermediate portion ( 8 , 8 ′, 8 ″, 8 ′″) of said coupling member ( 5 a , 5 b ; 5 a ′, 5 b ′; 5 a ″, 5 b ″; 5 ′″) comprising, from said first portion ( 6 , 6 ′, 6 ″, 6 ′″) to said second portion ( 7 , 7 ′, 7 ″, 7 ′″), a first portion ( 9 , 9 ′, 9 ″, 9 ′″) decreasing in thickness crosswise to said direction (D), and a second portion ( 10 , 10 ′, 10 ″, 10 ′″) of constant thickness; said intermediate portion ( 8 , 8 ′, 8 ″, 8 ′″) further comprising a flat lateral first face ( 14 , 14 ′, 14 ″, 14 ′″) and a lateral second face ( 15 , 15 ′, 15 ″, 15 ′″) opposite said first face ( 14 , 14 ′, 14 ″, 14 ′″) and connected, at opposite radial ends, to said first and second portion ( 6 , 6 ′, 6 ″, 6 ′″; 7 , 7 ′, 7 ″, 7 ′″); said first portion ( 6 , 6 ′, 6 ″, 6 ′″) being bounded laterally, at least at a respective outer radial end ( 11 ), by a first surface ( 25 , 25 ′, 25 ″, 25 ′″) contiguous to and coplanar with said first face ( 14 , 14 ′, 14 ″, 14 ′″) of said intermediate portion ( 8 , 8 ′, 8 ″, 8 ′″); said first portion ( 6 , 6 ′, 6 ″, 6 ′″) being bounded laterally, on the opposite side to said first surface ( 25 , 25 ′, 25 ″, 25 ′″), by a second surface ( 26 ) which, from said outer radial end ( 11 ) towards said axis (A), comprises a first region ( 27 ) connected to said second face ( 15 , 15 ′, 15 ″, 15 ′″) of said intermediate portion ( 8 , 8 ′, 8 ″, 8 ′″), and a flat second region ( 28 ) sloping with respect to said second face ( 15 , 15 ′, 15 ″, 15 ′″); said second region ( 28 ) sloping away from said first surface ( 25 , 25 ′, 25 ″, 25 ′″) from said outer radial end ( 11 ) towards said axis (A).