Patent ID: 7303451
Filing Date: 2007-12-04
Classification: B63H,F16H,Y10T

Abstract:
1. Drive unit of the type comprising a transmission with two coaxial bevel gears ( 11 , 12 ) fitted opposite one another on the same engine shaft ( 10 ), which engage a bevel gear ( 13 ) fitted to a shaft ( 14 ) perpendicular to the preceding one, and means designed to mesh said engine shaft with one or other of said bevel gears, constituted by clutches ( 20 , 21 ) housed in the body of said bevel gears ( 12 , 11 ) and controlled by a pressurised fluid, wherein pipes ( 24 , 25 ), designed to convey said pressurised fluid, are formed in said engine shaft ( 10 ), wherein, in order to supply pressurised oil to said pipes ( 24 , 25 ), an axial inlet pipe ( 34 ) is formed in the head of said engine shaft ( 10 ), which said axial pipe ( 34 ) feeds a distributor ( 35 ) constituted by a valve that slides on said engine shaft, which said slide valve ( 35 ) can move between two positions in which it places said input pipe ( 34 ) in communication with one of said pipes ( 24 , 25 ).