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Individual
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Individual
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Barra extensible, caracterizada por que comprende un cabezal tubular, con base susceptible de recibir plancha elástica de apoyo, en cuyo interior se fija, en el moldeo, un disco que lleva axilmente una espiga roscada en la que ceba la tuerca dispuesta en el tramo tubular central, por giro del cual, en uno u otro sentido, se ajusta a la longitud del vano, en combinación con otro cabezal análogo al descrito pero sin espiga roscada aunque sí con disco interior de asiento y placa de apoyo.
Dispositivo para la sujecion de un elemento estructural a un soporte y aparato de percusion para efectuar la expansion radial de este disssitivo y realizar dicha sujecion.