DRIVING TOOL FOR SHEARABLE FASTENERS

摘要

A drive tool (10) for use in association with a shearable fastener comprising an operative part and a head part shearable therefrom upon application of a predetermined torque, said drive tool (10) comprising a first assembly adapted to be engaged with the head part of the fastener so as to apply rotational drive thereto, and a second assembly which engages the operative part of the fastener when said first assembly is engaged with the head part of the fastener,wherein said first assembly and said second assembly are coupled such when the operative part and the head part of the fastener are joined the first assembly and the second assembly rotate together, and when the head part shears from the operative part the first assembly is capable of restricted rotational movement relative to the second assembly, whereby sudden movement of the drive tool upon shearing of the fastener is inhibited or prevented.