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Individual
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Individual
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Priority to ES147876UpriorityCriticalpatent/ES147876U/en
Publication of ES147876UpublicationCriticalpatent/ES147876U/en
Improved block, essentially characterized by having a diametral cut that, from the mouth of the axial hole, divides it in two, although said cut does not reach the entire length of the block since it dies approximately one third of it, forming there an integral, tubular zone, combining said cut, with a pair of longitudinal channels, practiced in a plane perpendicular to that of the mentioned cut, whose channels, contrary to the cuts, start from the lower end and do not reach to the opposite or higher, where there is a short tubular integral zone, free of channels, so that when introducing the screw or nail, the plug expands in opposite directions, only from the upper two thirds occupied by the cut, while when passing the screw to the lower third of the block, it breaks the bottom of the two channels, dividing the end of the block into two parts, which allows the expansion of these two parts of the end in opposite directions, and according to an expansive axis perpendicular to the axis of expansion of the upper part first expanded. (Machine-translation by Google Translate, not legally binding)
ES147876U1969-04-251969-04-25Improved cue (Machine-translation by Google Translate, not legally binding)
PendingES147876U
(en)