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Priority to ES1972177335UpriorityCriticalpatent/ES177335Y/en
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Publication of ES177335YpublicationCriticalpatent/ES177335Y/en
Improved tightening device, applicable to the mobile arm of jacks, characterized in that it comprises a spindle threaded in its entirety to adapt to the lower end of the cylinder forming part of the movable arm with the possibility of axial movement to thread; the upper end of said spindle is provided with a spherical head that is housed in a cylindrical cavity provided axially at the lower end of the sliding shank carrying the jaw plate, creating a rotary joint by means of a press or percussion notch made on the mouth of the spindle. Cylindrical housing; the free end of the spindle comprises a threaded bushing that performs the function of the head thereof at its maximum tightening movement, while constituting a reinforcement of the actuating element, either in the form of a handle or other suitable means. (Machine-translation by Google Translate, not legally binding)
Perfected anchoring device, between the hydraulic mechanism and the extractor of parts of construction machines of ceramic pieces. (Machine-translation by Google Translate, not legally binding)