Compact variable speed drive for electric motor

Details Compact variable speed drive for electric motor Compact variable speed drive for electric motor

1979-05-10

1981-06-16

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

74789, H02K 710

Patent

active

042740231

ABSTRACT:
An electrical machine in which a frame supporting the rotor windings is coupled to the machine shaft through a planetary gear system housed within the rotor structure. The internal ring gear of the planetary system forms a part of the motor rotor structure. Further locking devices are provided to lock the various movable components making up the drive system together or to the motor casing so that a variety of speeds can be selectively attained at the output shaft or shafts of the motor without changing the motor speed.

REFERENCES:
patent: 1819606 (1931-08-01), Jones
patent: 2600762 (1952-06-01), Hartz
patent: 3374372 (1968-03-01), Tinder
patent: 3533484 (1970-10-01), Wood
patent: 4021690 (1977-05-01), Burton
patent: 4185215 (1980-01-01), Montagu

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