Epicyclic reduction gearing and manipulation arm comprising such a device.

An epicyclic reduction gear has an internally meshing epicyclic gear means (100; 600) and a planetary epicyclic gear means (130; 630) engaging with the former.

The shaft is driven by a heavy duty planetary reduction gearbox.

Preferably the epicyclic reduction gear unit (4) is constructed integrally with the fixed body (4).

An epicyclic gear assembly has a plurality of planetary gear sets secured in a carrier.

Preferably there is provided a lubricant feed line (15) which passes through the fixed body and reaches the epicyclic reduction gear unit (4).

These reduction gearsets drive, in the case of one of them, an input gearwheel (8A) and, in the case of the other, a planet wheel (12) of an epicyclic reduction gearset (10).

An epicyclic reduction gear unit comprises a case (2) and a planet carrier (12) rigidly connected to a low-speed output shaft (16).

The gearbox may include but is not limited to both star gearbox and planetary gearbox configurations.

The gearbox of the car is also novel, having dual epicyclic gears and being bolted directly to the engine.

The invention relates to a permanent-mesh starter motor (1) for an internal combustion engine, notably of a motor vehicle, comprising a cylinder head (3), an electric motor (14), a drive wheel assembly, an epicyclic reduction gearbox (130).

Bonfiglioli designs and patents the RAE series two-stage planetary gearbox, which proves so successful that no improvements are required for the next 15 years.