Patent ID: 6763736
Filing Date: 2004-07-20
Classification: F16H,Y10T

Abstract:
A transmission provided with a main shaft and a counter shaft, respectively, provided in parallel with a crankshaft for transmitting the revolution of a torque converter provided to the crankshaft to the main shaft via a gear and further, shifting speed at three steps by gears provided on the main shaft and the counter shaft and hydraulic clutches for connecting or disconnecting the gears, comprising:a first-speed driving gear revolvably mounted on the main shaft; a first-speed hydraulic clutch arranged on the main shaft outside a pair of supports for supporting the main shaft, said first-speed hydraulic clutch being operatively mounted for selectively actuating the first-speed gear; a second-speed driving gear and a third-speed driving gear fixed to the main shaft and spaced apart on both sides of the main shaft and positioned close to and inside the supports for supporting the main shaft; a first-speed driven gear engaged with the first-speed driving gear, said first-speed driven gear being fixed to the counter shaft; a second-speed driven gear and a third-speed driven gear engaged with the second-speed driving gear and the third-speed diving gear, respectively, said second-speed driven gear and the third-speed driven gear being revolvably mounted on the counter shaft and arranged in positions spaced apart and on both sides of the counter shaft close to and inside the supports of the main shaft; and a second-speed hydraulic clutch and a third-speed hydraulic clutch operatively positioned on the counter shaft for selectively connecting or disconnecting the second-speed driven gear and the third-speed driven gear relative to the counter shaft, respectively, said second-speed hydraulic clutch and said third-speed hydraulic clutch being arranged between the second-speed driven gear and the third-speed driven gear.