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MARKES AND CO KG
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MARKES AND CO KG
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Application filed by MARKES AND CO KGfiledCriticalMARKES AND CO KG
Priority to ES0049512UpriorityCriticalpatent/ES49512Y/en
Publication of ES49512UpublicationCriticalpatent/ES49512U/en
Application grantedgrantedCritical
Publication of ES49512YpublicationCriticalpatent/ES49512Y/en
A toy helicopter, characterized by using centrifugal force as a regulating element; there being provided elastic elements to tension or compression as regulating organs, which act against the centrifugal force, and finally that by means of said regulating organs, the propeller in the start presents a positive angle of attack that automatically changes in negative when reaching the maximum height, which in the descent accelerates the speed of rotation of the propeller until reaching the necessary revolutions the increasing centrifugal force again produces a positive angle of attack and thus the descent speed is slowed exactly at the same way as in the original, in several stages. (Machine-translation by Google Translate, not legally binding)
ES0049512U1955-07-271955-07-27
Toy helicopter
ExpiredES49512Y
(en)
Flying propeller with detachable capsule that is released from the body of the propeller during flight (Machine-translation by Google Translate, not legally binding)
Improvements in the construction of cubes for boat propellers or turbines with rotating spheres (Machine-translation by Google Translate, not legally binding)
A transmission cube with change of multiplication automatically activated depending on the speed of the running (Machine-translation by Google Translate, not legally binding)