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Priority to ES1971195504UpriorityCriticalpatent/ES195504Y/en
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Publication of ES195504YpublicationCriticalpatent/ES195504Y/en
Improved breaker expander, essentially characterized in that it is constituted by a cylindrical body whose interior comprises an elongated pressure chamber, of scarce height with respect to its length, in which it plays in perfect longitudinal and transverse fit, a piston also elongated, with the possibility of upward and downward vertical displacement, according to the larger faces of said chamber, one of which involves a central throat that occupies its entire length, while the opposite one has a rectangular opening, through to the outside, in which a knife perfectly fits rectangular with the sharp outer edge and the opposite one, that is to say, the interior fitted and seated in a housing provided in the piston, the cylindrical body, piston and blade assembly being inscribed in and assembled by a housing housing provided with a throat that allows the passage of the blade and of a hole that communicates, the existing chamber between the face of the piston opposite the blade and the throat made on one of the larger faces of the pressure chamber with the outside, whose chamber is capable of being filled with pressurized hydraulic oil and consequently causing the displacement of the plunger and the piston. Emersion of the blade referred to above. (Machine-translation by Google Translate, not legally binding)
Improvements in the manufacture of systems constituted by a piston and a cylinder stupidly coupled. (Machine-translation by Google Translate, not legally binding)
Device for the cutting of cavities of different depth in plates of foam material or similar. (Machine-translation by Google Translate, not legally binding)