Sealed and balanced motor and fluid pump system

Details Sealed and balanced motor and fluid pump system Sealed and balanced motor and fluid pump system

1985-04-15

1987-02-17

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 62, 310 90, 310114, 310156, 310268, 277 53, 384316, 417370, H02K 900

Patent

active

046442022

ABSTRACT:
A pancake, d.c., brushless electric motor 10 and pump 32 in which the rotating parts of the pump 32 are integral with the rotor 18 of the motor 10. The motor and pump housing is hermetically sealed from the flow of the pumped fluid. A small portion of fluid is leaked through a seal 38 and acts to cool the motor 10 and to lubricate a sleeve bearing 24 which supports the rotor 18 on the motor's stationary shaft 26. The rotor 18 has permanent magnets 22 divided into two sets which lie on opposite sides of the poles of the stator coils 14 and, therefore, the magnetic thrust between stator and rotor is balanced out.

REFERENCES:
patent: 3115839 (1963-12-01), Pollak et al.
patent: 3912284 (1975-10-01), Gosling
patent: 4438359 (1984-03-01), Royer
patent: 4451749 (1984-05-01), Kanayama et al.
patent: 4466620 (1984-08-01), Orlowski
patent: 4545586 (1985-10-01), von Pragenau

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