Power Tool User Interfaces

A hand-held power tool comprising:

• a housing assembly supporting an electric motor having a rotor configured to rotate when the electric motor is supplied with power;
• an output spindle protruding from an output end of the housing assembly;
• wherein the output spindle is functionally coupled to the rotor such that the output spindle rotates in response to a rotation of the rotor;
• a motor endbell located on the housing assembly adjacent the electric motor and opposite the output spindle;
• a user interface located on the motor endbell opposite the output spindle;
• wherein the user interface is configured to select one of a plurality of modes of operation of the hand-held power tool to regulate the power supplied to the electric motor;
• wherein the user interface includes a control knob accessible from exterior of the housing assembly;
• wherein the control knob is rotatable about a knob axis to a plurality of mode positions that controls a plurality of operation modes;
• wherein the control knob includes a lever that is configured to be pivoted by a hand;
• wherein the motor endbell further includes piloting features located adjacent to and interact with the control knob to guide rotation of the control knob relative to the housing assembly about the knob axis to the plurality of mode positions;
• wherein the piloting features include an arcuate guide about which the control knob rotates such that the control knob cooperatively defines the shape of the arcuate guide;
• wherein the motor endbell further includes indexing features located on the arcuate guide as a plurality of selective stops;
• wherein each of the plurality of selective stops is configured to interact with at least one arm on the control knob to provide haptic feedback when the control knob is rotated to each of the plurality of selective stops to define the plurality of mode positions which indicate positional states of the control knob corresponding to the plurality of operation modes.