Importance

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Abstract

A power tool includes multiple attachments to selectively perform rotary motions, reciprocating motions, and multiple impact motions upon a work surface. For example, tool attachments may be selected to configure the power tool as a nailer, stapler, biscuit jointer, drill, hammer drill, detail sander, sheet metal nibbler, router, buffer, jig saw, chipping tool, saws all, as well as other types of power tools. A base unit provides a rotary input that is adapted to each engaged tool attachment. In particular, a power tool control system in the base unit senses an attachment type designation from the tool attachment, as well as user inputs and motor feedback, to change motor control. Examples of these adaptions include changing motor speed, changing trigger operation from on/off to variable speed, responding to or ignoring a forward/reverse control, as well as monitoring motor feedback and sensors in the tool attachment for conditions warranting motor deactivation.

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First Claim