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Dispositivo expansor para grietas. Básicamente dicho dispositivo expansor se constituye a partir de dos piezas excéntricas de contorno preferentemente ovalado y dotadas de sectores dentados las cuales se encuentran montadas sobre los respectivos extremos de un eje que es solidario de un brazo transversal previsto entre las propias piezas excéntricas, estando estas últimas dotadas en su cara interna de unos resortes de expansión que tienden a disponerlas transversalmente respecto del comentado brazo, haciendo tope en éste para limitar su apertura.
ES1985285759U1985-03-291985-03-29Dispositivo expansor para grietas
ExpiredES285759Y
(es)