Patent ID: 6931959

Claim:
A train housing and speed reduction unit for a pseudo-planetary kinematic transmission, comprising: an input sun gear( 1 ); planet gear pairs each comprising a first planet gear ( 3 ) and a second planet gear ( 4 ), said first and second planet gears ( 3 , 4 ) being rigidly coupled to a common pivot ( 5 ), said first planet gear ( 3 ) meshing with said input sun gear ( 1 ), and said first planet gear ( 3 ) being larger than said second planet gear ( 4 ); an internal ring gear ( 2 ) meshing with said second planet gear ( 4 ) of said planet gear pairs; said train housing ( 8 ) comprising a composite arrangement of three components ( 9 , 10 , 13 ), said three components ( 9 , 10 , 13 ) being constituted by a central component ( 13 ) and by two external components ( 9 , 10 ) each removably fixed to said central component ( 13 ), and by axial posts ( 11 , 12 ) which are formed so as to protrude between said components ( 9 , 10 , 13 ); said common pivot( 5 ) of said planet gear pairs having opposite ends which are rotatably coupled by means of bearings ( 6 , 7 ) respectively to said two external components ( 9 , 10 ) of said train housing ( 8 ), and said common pivot ( 5 ) of said planet gears extending through a respective hole provided in said central component ( 13 ) of said train housing ( 8 ); each one of said external components ( 9 , 10 ) supporting a respective one of said axial posts ( 11 , 12 ), which is formed monolithically thereon and is directed toward, and removably fixed to, said central component ( 13 ); said axial posts ( 11 , 12 ) of said external components ( 9 , 10 ) being each arranged in a peripheral region of a respective one of said external components ( 9 , 10 ), said axial posts ( 11 , 12 ) of said external components ( 9 , 10 ) extending mutually parallel and at different distances from a central axis of said transmission.