Transmissions

Abstract

A combined powershift transmission and main clutch assembly for a vehicle includes a casing containing an input shaft and an output shaft. A planetary transmission is disposed within the casing and is co-axially mounted around the input shaft. The planetary powershift unit includes a sun gear and an annulus gear interconnected by one or more planet gears carded on a planet carder. A first one of the sun gear, the annulus gear, and the planet carder is connected to the input shaft, while a second one of the sun gear, the annulus gear, and the planet carder acts as an output member of the planetary powershift unit. A first clutch is disposed within the casing and co-axially surrounds the output shaft for drivingly connecting the output member of the planetary powershift unit with the output shaft. A second clutch is disposed within the casing and co-axially surrounds the input shaft for selectively clutching a third one of the sun gear, the annulus gear, and the planet carder for co-rotation with one of the first element of the planetary powershift unit, the second element of the planetary powershift unit, and the casing so as to select an operative gear ratio of the powershift unit. A power-take off shaft is connected to the input shaft and extends co-axially therefrom within the output shaft.

Dependencies are inferred from the claim text.