Forced cooled electric motor

Details Forced cooled electric motor Forced cooled electric motor

1975-08-14

1978-05-30

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 62, 310 63, 310227, H02K 908

Patent

active

040925560

ABSTRACT:
An electric motor comprising a rotor, a stator and a commutator means for controlling energization of the rotor or the stator is equipped with ducts which open opposite the surface of contact between the brushes and the commutator of said commutator means for directing jet of a cooling medium through the ducts directly onto the commutator means so as to prevent the efficiency drop of the motor due to heat generated therein and to forcibly blow out sparks occurring at the commutator means, in order to provide a forced cooled electric motor which is small in size and weight and yet can produce a high power.

REFERENCES:
patent: 2749049 (1956-06-01), Smith
patent: 3461328 (1969-08-01), Dronard
patent: 3486055 (1969-12-01), Lipstein
patent: 3529189 (1970-09-01), Armstrong
patent: 3648086 (1972-03-01), Renner et al.
patent: 3673447 (1972-06-01), Fumbach et al.
patent: 3714478 (1973-01-01), DeMania et al.
patent: 3840762 (1974-10-01), Kasabian
patent: 3978354 (1976-08-01), Lee et al.

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