PTO-Driving of double-clutch-incorporated type transmission

Claim 1

PTO-drive for double-clutch type transmission comprising a double clutch apparatus including: a running-travel clutch and a PTO clutch having a PTO transmission shaft, said running-travel and PTO clutches disposed in operative juxtaposition relative to one another; a running-travel main shaft drivable from th running-travel clutch; a PTO main shaft drivable from the PTO clutch, said running-travel shaft being concentrically disposed within said PTO main shaft; travel-transmission shaft means for transmitting engine power from said running-travel main shaft; main speed-change means operatively associated with said running-travel main shaft for operatively interconnecting said running-travel main shaft and said travel-transmission shaft means to change running travel speeds, wherein said running-travel main shaft, said main speed-change means and said travel-transmission shaft means together establish a travel drive line; first and second gear means for being respectively driven by the PTO main shaft and the running-travel main shaft; and coupling means movable between a first position for selectively coupling said PTO transmission shaft to said PTO main shaft through said first gear means, and a second position for selectively coupling said PTO transmission shaft to said running-travel main shaft through said second gear means, wherein said running-travel main shaft, said second gear means and said PTO transmission shaft together define a PTO drive line when said coupling means is moved to said second position such that operation of said main speed change means to effect speed change through said travel drive line does not affect PTO drive speed through said PTO drive line.