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Priority claimed from US389349Aexternal-prioritypatent/US2707242A/en
Priority claimed from US394622Aexternal-prioritypatent/US2707244A/en
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Publication of BE533707ApublicationCriticalpatent/BE533707A/xx
H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
H02K—DYNAMO-ELECTRIC MACHINES
H02K9/00—Arrangements for cooling or ventilating
H02K9/14—Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle
H02K9/18—Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle wherein the external part of the closed circuit comprises a heat exchanger structurally associated with the machine casing