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MANANA S A
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MANANA S A
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Priority to ES0060414UpriorityCriticalpatent/ES60414Y/en
Publication of ES60414UpublicationCriticalpatent/ES60414U/en
Application grantedgrantedCritical
Publication of ES60414YpublicationCriticalpatent/ES60414Y/en
"Rings for the formation of well filters and probes", characterized in that its upper face is flat and the lower one is formed by a flat inner surface and an outer conical surface, carrying on the underside some projections that when resting on the upper face of the disc that is immediately underneath, leave between both discs a gap that when mounted the filter formed with the rings, is increasing towards the interior, in order to prevent the clogging by the sand, being the inner diameter of the ring, the same of the operating pipe. (Machine-translation by Google Translate, not legally binding)
ES0060414U1957-06-071957-06-07
Rings for the formation of filters for wells and boreholes
ExpiredES60414Y
(en)