Patent ID: 6298543
Filing Date: 2001-10-09
Classification: B21J,B25D,Y10T

Abstract:
A sheath for a riveting tool,the tool comprising:a tool head shaped and arranged for engaging and driving a domed rivet head by pressure or impact;the tool head including a generally cylindrical body with a peripheral wall and a front face for engaging the rivet head, the front face having a central recessed portion and a peripheral rib at or adjacent the peripheral wall;the sheath comprising:a body integrally molded from a plastics material;the sheath having a generally cylindrical sleeve portion for engaging over the peripheral wall of the tool head and extending thereon from the front face to an edge of the sleeve portion partly along the tool head;the sheath being shaped to provide a readily removable and replaceable friction fit on the tool head so that the cylindrical sleeve portion is slidable over the front face onto the cylindrical portion to be maintained thereon by the friction fit;the sheath having a front peripheral annular portion shaped to cover the peripheral rib and defining radially inwardly of the front peripheral annular portion a central circular area for extending over the central recessed portion;and the sheath having a thin film extending radially inwardly from the front peripheral annular portion and filling the central circular area, the thin film being arranged to cover the central recessed portion of the front face of the tool head to prevent damage to the domed rivet head and the thin film being sufficiently thin to prevent material from migrating, during the application of forces to the rivet head, from the thin film to the front peripheral annular portion of the sheath to cause splitting of the front peripheral annular portion.