Thrust preventive device for the output shaft of an electric mot

Details Thrust preventive device for the output shaft of an electric mot Thrust preventive device for the output shaft of an electric mot

1980-03-04

1982-04-13

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 74, 74572, H02K 2122

Patent

active

043249957

ABSTRACT:
A thrust preventive device for the output shaft of an electric motor comprises an electric motor having one end face from which an output shaft is projected and a rotating force transmitting member secured outside the motor to a portion of the output shaft which is projected from the one end face of the motor. The one end face of the motor has a recess therein. The rotating force transmitting member comprises a fly-wheel and a pulley. The fly-wheel has one end face which opposes the one end face of the motor and another face which is connected to the pulley. A projection which is formed of iron is provided on the one end face of the fly-wheel and projects toward the one end face of the motor and into the recess. The projection is attracted in one direction taken along a central axis of the output shaft by the magnetic force from the permanent magnets which are located in the motor housing to rotate the output shaft. Therefore, the output shaft is biased in said one direction and is kept at a position thus biased.

REFERENCES:
patent: 2666509 (1954-01-01), Jaggi
patent: 2668917 (1954-02-01), Uher
patent: 2982872 (1961-05-01), Fredrickson
patent: 3097316 (1963-07-01), Barden
patent: 3290528 (1966-10-01), Adler
patent: 3308319 (1967-03-01), Faulhaber
patent: 3582986 (1971-06-01), Yokoyama
patent: 3790831 (1974-02-01), Morreale
patent: 3974406 (1976-08-01), Wehde
patent: 4162419 (1979-07-01), De Angelis

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