Method of Controlling the direction of rotation of a power tool
First Claim
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1. A method of controlling the direction of rotation of a drive shaft of a power tool, comprising the following steps:
- (A) setting the direction of rotation to clockwise or counter-clockwise;
(B) monitoring whether a switching means for reversing the direction of rotation is activated;
(C) starting a timer, if an activation of the switching means is sensed;
(D) monitoring, whether a motor switch is activated to start the motor, before a preset time period beginning with the starting of the timer has elapsed;
(E) if the motor switch is activated within the preset time period, reversing the direction of rotation of step (A) and starting the motor with the reversed direction of rotation; and
(F) starting the motor with the direction of rotation preset in step (A), if the motor switch is activated after the preset time period has elapsed.
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Abstract
The invention discloses a power tool for screwing or drilling having a motor for driving a drive shaft, a controller for controlling the power tool, a motor switch for switching the motor on and off, switch for reversing the power tool between clockwise and counter-clockwise rotation, and vice versa, and a timer that permits reversal of the power tool between clockwise/counter-clockwise rotation, and vice versa, within a predefined period of time between actuation of the switch for clockwise/counter-clockwise rotation and for operation of the motor switch to start the power tool.
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10 Claims
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1. A method of controlling the direction of rotation of a drive shaft of a power tool, comprising the following steps:
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(A) setting the direction of rotation to clockwise or counter-clockwise; (B) monitoring whether a switching means for reversing the direction of rotation is activated; (C) starting a timer, if an activation of the switching means is sensed; (D) monitoring, whether a motor switch is activated to start the motor, before a preset time period beginning with the starting of the timer has elapsed; (E) if the motor switch is activated within the preset time period, reversing the direction of rotation of step (A) and starting the motor with the reversed direction of rotation; and (F) starting the motor with the direction of rotation preset in step (A), if the motor switch is activated after the preset time period has elapsed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification