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Priority to ES0319359ApriorityCriticalpatent/ES319359A1/en
Publication of ES319359A1publicationCriticalpatent/ES319359A1/en
Improvements in the construction of windmills for land, characterized by comprising the constitution of two diametrically opposed arms starting from a central hub designed to allow its fixation on the single drive shaft and each of said arms acting at its end, the coupling by means of pins of centering and through screws, of a square parallelepiped piece, one of whose edges is in extreme position with respect to the arm and intended to rotate in a position very close to the enveloping screen of the beater assembly. (Machine-translation by Google Translate, not legally binding)
ES0319359A1965-10-261965-10-26Some improvements in the construction of mills for land. (Machine-translation by Google Translate, not legally binding)
ExpiredES319359A1
(en)
Device for simultaneous control of variations in the pitch of the blades of two coaxial half-propellers with variable pitch in flight, rotating in opposite directions