| 摘要 |
<p>A fastening device (10) for driving a fastener (33) into a workpiece by effecting multiple blows upon the fastener comprises a housing (12) and a striker assembly (30) movably mounted within the housing (12). The striker assembly (30) includes a driver assembly adapted to strike a fastener (33) to be driven into the workpice. A nose assembly (16) is movably mounted on the housing (12) and has a fastener drive track (14) along which the driver assembly and the fastener (33) travel when the fastener (33) is driven into the workpiece. The fastening device (10) has a feed mechanism (90) operatively connected to the nose assembly (16) for mechanically advancing the fastener (34) into the fastener drive track (14). The fastener drive track (14) has a guide surface adjacent the aperture of the nose assembly to direct the fastener (33) as it is driven into the workpiece. A releasable fastener assembly releasably secures the nose assembly (16) to the housing (12) of the fastening device. A control assembly controls the operation of the fastening device to conserve energy. A coil of collated roofing nails (34) is adapted for use with the fastening device (10). Each of the nails of the coil of collated roofing nails is coated with a thermoplastic material that serves as a lubricant which facilitates driving of the nails.</p> |
