The invention relates to a transmission with torque division for a helicopter rotor drive. In a manner known per se, in the transmission a first power transmission branch has a first rotatable driving pinion (6) which is in constant engagement with a first toothed wheel (2) on the output side. At least...http://www.google.com.au/patents/US6626059?utm_source=gb-gplus-sharePatent US6626059 - Gearbox with torque division, in particular for a helicopter rotor drive
