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B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
B25D9/06—Means for driving the impulse member
B25D9/08—Means for driving the impulse member comprising a built-in air compressor, i.e. the tool being driven by air pressure
Dispositif permettant de maintenir captif un axe d'articulation dans un logement d'un élément de couronnement, tel qu'une grille ou un tampon, d'un regard de chaussé