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Individual
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Individual
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Application filed by IndividualfiledCriticalIndividual
Priority to ES0087687UpriorityCriticalpatent/ES87687Y/en
Publication of ES87687UpublicationCriticalpatent/ES87687U/en
Application grantedgrantedCritical
Publication of ES87687YpublicationCriticalpatent/ES87687Y/en
A new screw, essentially characterized by comprising a head screw constituted by a half-spherical cap slotted in its transverse half part, the threaded stud of which fits in a threaded neck provided in a lining part which comprises a helically grooved neck and the head of this referenced lining recessed in polygonal configuration of four points, existing in the assembly of both elements an intermediate annular piece that acts as a buffer between the retaining tube of the backrest and this, fixing these mentioned parts by adjusting to the appropriate pressure . (Machine-translation by Google Translate, not legally binding)
Improvements in the parts of contact with direct spindle of the power cord through a fixing screw (Machine-translation by Google Translate, not legally binding)