Power tool dual-trigger operation
AssigneeBlack & Decker Inc.
InventorsDaniel F. NACE, Levi G. BOWERS, James H. STILES, III, Eric S. ROHRER, Christopher T. KING
Life of this patent
Estimating the term…
Abstract
A power tool is provided including a housing, an electric motor, a main trigger switch, a side handle having an auxiliary trigger, and a controller operable to control a flow of electric current from a power source to the electric motor. In an embodiment, the controller the motor at start-up only if the main trigger is actuated after the auxiliary trigger is actuated, and otherwise prevent motor operation until both the main trigger and the auxiliary triggers are released. In an embodiment, an orientation of the auxiliary trigger relative to the gear case is adjustable.
Claims18
A power tool comprising:
- a housing;
- an electric motor disposed within the housing;
- a main trigger switch mounted on the housing;
- a side handle mounted on the housing, the side handle having an auxiliary trigger;
- and
- a controller disposed within the housing operable to control a flow of electric current from a power source to the electric motor, wherein the controller is configured to activate the motor at start-up only if the main trigger is actuated after the auxiliary trigger is actuated, and discontinue operation of the motor after start-up if either of the auxiliary trigger or the main trigger is disengaged or if there is a tool fault condition.
A power tool comprising:
- a housing including a motor case, a handle portion extending longitudinally from the motor case, and a gear case accommodating an output spindle;
- an electric motor disposed within the motor case;
- a main trigger switch mounted on the handle portion;
- a side handle mounted on the gear case, the side handle having an auxiliary trigger;
- and
- a controller disposed within the housing operable to control a flow of electric current from a power source to the electric motor, wherein the controller is configured to activate the motor only while the main trigger and the auxiliary trigger are both actuated,
- wherein an orientation of the auxiliary trigger relative to the gear case is adjustable.
Dependencies are inferred from the claim text.