Driving unit including a liquid cooled electric motor and a planetary gear
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Dec 11, 2001
Grant Date -
N/A
app pub date -
Aug 10, 2000
filing date -
Aug 10, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention concerns a driving unit including a liquid cooled electric motor (1) and a planetary gear (3). One of the three main elements of the planetary gear, namely the element used as the reaction element, drives the positive displacement pump of the cooling circuit. Preferably, this element is the ring gear with an inner toothing (23) and said ring gear itself constitutes the pump rotor. The liquid circuit passes into a hollow shaft (11) of the motor rotor and through a radiator (31) incorporated in the common casing (5) containing the motor and the gear. Such a driving unit can be applied to driving a machine or a vehicle.
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