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Priority to ES1968138706UpriorityCriticalpatent/ES138706Y/en
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Publication of ES138706YpublicationCriticalpatent/ES138706Y/en
Structures Of Non-Positive Displacement Pumps
(AREA)
Abstract
Propeller for fans, characterized by comprising a central core in the shape of a warped cross, obtained from stamped metal plate, and a pair of blades equal to each other, also obtained from stamped metal plate, which are conveniently attached to the arms of that, with the essential characteristic that these blades have a wide pressed flat area, centered with respect to one of their edges, which is subdivided into two diverging ribs, of progressively decreasing section, which extend to the vertices opposite the expressed edge, and the arms of the the core should have continuous lateral edges with an angled section, all in order to give these elements the appropriate degree of rigidity, compensating for the small thickness of the plate from which they are obtained. (Machine-translation by Google Translate, not legally binding)
ES1968138706U1968-04-241968-04-24
PROPELLER FOR FANS.
ExpiredES138706Y
(en)