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Priority to ES0155863UpriorityCriticalpatent/ES155863Y/en
Publication of ES155863UpublicationCriticalpatent/ES155863U/en
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Publication of ES155863YpublicationCriticalpatent/ES155863Y/en
Improved tightening device, for tools or jacks, characterized by being essentially constituted by a spindle whose lower half is screwed in the support body provided in the mobile arm, while the other upper half, of smaller diameter, is housed in a cylindrical cavity practiced axially in said body and threaded in the opposite direction to a sliding rod that at its upper end comprises the movable jaw plate, fixed by a radial pin, producing the coaxial displacement of the shaft by means of a suitable handle or handle located at the lower end of the shaft. spindle (Machine-translation by Google Translate, not legally binding)