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Individual
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Individual
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Priority to ES99794UpriorityCriticalpatent/ES99794Y/en
Publication of ES99794UpublicationCriticalpatent/ES99794U/en
Application grantedgrantedCritical
Publication of ES99794YpublicationCriticalpatent/ES99794Y/en
Details Of Spanners, Wrenches, And Screw Drivers And Accessories
(AREA)
Abstract
A bolt for fasteners, essentially characterized, by being constituted by a truncated-pyramidal body of square section, endowed in the center of its lateral faces with four longitudinal grooves that, in conjunction with a central hollow, of converging rearward walls and of transversal section in cross shape existing in the same block, give a certain elastic character to this when introducing it in the hole of smaller dimensions existing in the wall where it has to be placed. (Machine-translation by Google Translate, not legally binding)
ES99794U1963-05-241963-05-24
A PLUG FOR SCREWS.
ExpiredES99794Y
(en)