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Priority to ES1972178289UpriorityCriticalpatent/ES178289Y/en
Publication of ES178289UpublicationCriticalpatent/ES178289U/en
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Publication of ES178289YpublicationCriticalpatent/ES178289Y/en
Improved strut, characterized in that the support base plate on the ground, comprises in the upper plane and centrally, a threaded spindle, where another rotating intermediate plate is mounted, by a central nut solidaria, this rotating platen being provided, one a way of handles, to allow its maneuverability, bringing the turntable in the upper plane and centrally so that it covers the central nut, a blind tubular portion with oil feeder, which covers the space occupied by the spindle that threads on the nut keeping it greased and free of dust and dirt, at the same time serving this blind tubular portion, of guiding of bushings engageable by a central through hole; whose outer diameter is variable by interchangeability between one and the other bushings, to allow the coupling in the strut, of tubes of different diameters, allowing by this means to reach high heights with sufficient mechanical strength. (Machine-translation by Google Translate, not legally binding)