Hand-held power-driven screwdriver - comprises long tubular housing with chuck and spring loaded switch bar operated by fingers to slide up or down

摘要

The housing (1) has a chuck (10) at the lower end to hold the bit, and lengthwise on one side of the housing is a switch bar (8) which is spring loaded (9). The spring is at the lower end of the bar and keeps it up in the off positions. Pressure from the fingers can slide the bar downwards against the spring to switch the machine on. The housing surface, on the opposite side to the switch bar, is roughened or ribbed and, in cross section, the housing is oval. USE/ADVANTAGE - Malfunction of hand-held power-driven screwdriver is practically eliminated.