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Fan-cooled electric motor

  • US 3,213,304 A
  • Filed: 11/06/1962
  • Issued: 10/19/1965
  • Est. Priority Date: 11/06/1962
  • Status: Expired due to Term
First Claim
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1. IN AN ELECTRIC MOTOR HAVING A ROTOR;

  • MEANS FOR COOLING SAID MOTOR COMPRISING A MEMBER MOUNTED FOR ROTATION WITH SAID ROTOR, AT LEAST ONE BLADE PIVOTALLY MOUNTED ON SAID MEMBER, RETAINING MEANS ON SAID MEMBER POSITIONED ON EITHER SIDE OF SAID BLADE TO LIMIT THE MOVEMENT OF SAID BLADE IN EACH DIRECTION RELATIVE TO SAID MEMBER, THE PORTION OF SAID BLADE RADIALLY INWARD OF SAID PIVOTAL MOUNT HAVING A GREATER MASS THAN THE PORTION OF SAID BLADE RADIALLY OUTWARD OF SAID PIVOTAL MOUNT WHEREBY SAID BLADE WILL ASSUME A REARWARDLY INCLINED POSITION RELATIVE TO A RADIUS OF SAID ROTOR REGARDLESS OF THE DIRECTION OF ROTATION OF SAID ROTOR.

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