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Priority to ES1969148189UpriorityCriticalpatent/ES148189Y/es
Publication of ES148189UpublicationCriticalpatent/ES148189U/es
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Publication of ES148189YpublicationCriticalpatent/ES148189Y/es
Aparejo perfeccionado para elevación y descenso de cargas, caracterizado porque, está constituido esencialmente por un mecanismo accionado por dos manivelas, una fija y otra loca, provista la fija de un sistema de grifa en dos planos inclinados de 180º que produce un efecto de expansión y blocaje de freno, asegurando la carga por su propio peso, en tanto que la manivela loca dispone de un soporte de seguridad que evita el giro de ésta en el descenso.
ES1969148189U1969-05-051969-05-05Aparejo perfeccionado para elevacion y descenso de cargas.
ExpiredES148189Y
(es)