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Individual
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Individual
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Priority to ES0074853UpriorityCriticalpatent/ES74853Y/en
Publication of ES74853UpublicationCriticalpatent/ES74853U/en
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Publication of ES74853YpublicationCriticalpatent/ES74853Y/en
"PERFECTED PLUG FOR DRUMS", which is characterized by a bowl of slightly elastic material, molded so that the half closest to the bottom has peripherally a helical rib that allows it to be screwed a rigid plug, which will press on the bottom of a annular groove made in a flange that perpendicular to the axis protruding from the bowl, whose smooth walls from it is inserted into a perforation of the base of the drum or can, leaving an internal ridge perpendicular to the surface, over the which is made mount the cup, overhang a few millimeters, so that it is practically riveted to the base and forming an inviolable seal, practicing the opening by drilling the bottom of the bowl, provided to the effect of a circumferential weakening, easy to break . (Machine-translation by Google Translate, not legally binding)
ES0074853U1959-07-081959-07-08
Perfected cap for drums
ExpiredES74853Y
(en)