| 摘要 |
<p>Power tools are taught having a motor M1, a tool 1 coupled to the motor M1 via a tool holder 2, at least one light 4 disposed proximal to the tool 1, a switch 6 coupled to the motor M1 and the light 4, the switch 6 being capable of activation by an operator, a power supply 7 coupled to the switch 6, and a timer circuit 3 coupled to the light 4, the switch 6 and the power supply 7. Preferably, activation of the switch 6 causes the motor M1 and the light 4 to operate and the timer circuit 3 causes the light 4 to remain lit for a predetermined amount of time after either (1) the switch 6 has been activated or (2) the switch 6 has been deactivated subsequent to being activated. The timer circuit 3 can be, for example, a RC timer circuit or a microprocessor. The light 4 may be an LED. The power supply 7 can be a rechargeable battery. <IMAGE></p> |
