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Otero Doural Alejandro
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Otero Doural Alejandro
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Priority to ES112892UpriorityCriticalpatent/ES112892Y/en
Publication of ES112892UpublicationCriticalpatent/ES112892U/en
Application grantedgrantedCritical
Publication of ES112892YpublicationCriticalpatent/ES112892Y/en
Extendable screw that is characterized by a stud in the form of frusto-conical solidary by its lower surface with a screw provided with the thread pitch on which the respective nut acts comprising a sliding cone in reverse position to that of the asparagus cited and between these trunk-conical pieces the fixed and the sliding are arranged several segments held by a ring. (Machine-translation by Google Translate, not legally binding)