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Individual
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Individual
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Application filed by IndividualfiledCriticalIndividual
Priority to ES0026359UpriorityCriticalpatent/ES26359Y/en
Publication of ES26359UpublicationCriticalpatent/ES26359U/en
Application grantedgrantedCritical
Publication of ES26359YpublicationCriticalpatent/ES26359Y/en
A device apuraminas, essentially constituted by a tubular, metallic element or a material that meets its conditions of hardness and flexibility, open longitudinally according to its generatrix, so as to be able to vary its diameter within certain limits, whose exterior is constituted by two surfaces truncated cone that allow insertion and fix it, with a slight pressure, to a cylindrical or prismatic handle and whose internal surface has two spirals in relief that prevent slippage of the mine, bar or pencil, ensuring its fixation. (Machine-translation by Google Translate, not legally binding)