Multispeed drive for engine-cooling fan

Details Multispeed drive for engine-cooling fan Multispeed drive for engine-cooling fan

1998-06-12

2000-01-11

Marmor, Charles A.

Planetary gear transmission systems or components

Electric or magnetic drive or control

475153, 192 8421, 192 8431, F16D 2708

Patent

active

060130032

ABSTRACT:
A multispeed drive for a motor-cooling fan has a shaft extending along and defining an axis and a planetary transmission including a sun gear fixed on the shaft, a planet element rotatable about the axis on the shaft and carrying planet gears meshing with the sun gear, and a ring element rotatable about the axis on the shaft and meshing with the planet gears. A fan is rotatable about the axis and fixed to one of the elements and an input member is also rotatable about the axis on the shaft adjacent the fan. Concentric electromagnetic clutches each have an output side connected to a respective one of the elements and couplable to the input member for closing and coupling the respective output side to the input member and for opening and decoupling the respective output side from the input member. Thus when both clutches are open the fan is decoupled completely from the input member.

REFERENCES:
patent: 3359831 (1967-12-01), Scheiter
patent: 4009771 (1977-03-01), Crankshaw
patent: 4224841 (1980-09-01), Crooks
patent: 4476744 (1984-10-01), Crooks
patent: 4498066 (1985-02-01), Fujiwara et al.
patent: 4926992 (1990-05-01), Linnig
patent: 5782715 (1998-07-01), Walton et al.

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