Patent ID: 6717080
Filing Date: 2004-04-06
Classification: H01H

Abstract:
A trigger assembly for controlling the operation of an electric power tool including an electric motor, comprising:a base for fixing within said power tool; a trigger supported by the base for inward and outward movement relative to said power tool; a mechanical switch in the base and operable to switch on and off said motor; an electronic operating circuitry including a solid-state device in the base for controlling the operation of said motor when the switch is closed; and a slider guided within the base for movement by or with the trigger to operate the switch and the operating circuitry; wherein the switch comprises a fixed contact, a moving contact pivoted for movement between a first position in contact with the fixed contact and a second position out of contact therefrom, and resilient means biassing the moving contact towards the first position, the moving contact having a first end for contacting the fixed contact and a second end for engagement by the slider to cause pivoting of the moving contact to the second position against the action of the resilient means.