Driving tool and method for controlling same
First Claim
1. A method for controlling a driving tool having a power source, a driver, an actuator, a follower, and a control unit, the power source including a motor and a flywheel that is driven by the motor, the actuator operable for selectively moving the follower to push the driver into frictional engagement with a surface of the flywheel, the control unit operable for selectively activating the electric motor and the actuator, the control unit including a speed sensor that is configured to sense a rotational speed of an element of the power source and produce a speed signal in response thereto, the method comprising:
- directly determining a rotational speed of an element in the power source;
controlling electrical power provided to the motor based on the rotational speed of the element in the power source to cause the flywheel to rotate at a predetermined speed; and
actuating the actuator to move the follower when a set of actuating criteria has been met, the follower pushing the driver into contact with the surface of the flywheel as the flywheel is rotating.
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Accused Products
Abstract
A method for controlling a driving tool having a power source, a driver, an actuator, a follower, and a control unit. The power source includes a motor and a flywheel that is driven by the motor. The actuator is configured to selectively move the follower to push the driver into frictional engagement with a surface of the flywheel. The control unit is configured to selectively activate the electric motor and the actuator. The control unit includes a speed sensor that is configured to sense a rotational speed of an element of the power source and produce a speed signal in response thereto. The method includes: directly determining a rotational speed of an element in the power source; controlling electrical power provided to the motor based on the rotational speed of the element in the power source to cause the flywheel to rotate at a predetermined speed; and actuating the actuator when a set of actuating criteria has been met, the set of actuating criteria not including a rotational speed of the element.
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Citations
20 Claims
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1. A method for controlling a driving tool having a power source, a driver, an actuator, a follower, and a control unit, the power source including a motor and a flywheel that is driven by the motor, the actuator operable for selectively moving the follower to push the driver into frictional engagement with a surface of the flywheel, the control unit operable for selectively activating the electric motor and the actuator, the control unit including a speed sensor that is configured to sense a rotational speed of an element of the power source and produce a speed signal in response thereto, the method comprising:
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directly determining a rotational speed of an element in the power source; controlling electrical power provided to the motor based on the rotational speed of the element in the power source to cause the flywheel to rotate at a predetermined speed; and actuating the actuator to move the follower when a set of actuating criteria has been met, the follower pushing the driver into contact with the surface of the flywheel as the flywheel is rotating. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A driving tool comprising:
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a power source including a motor and a flywheel that is driven by the motor; a driver; a follower; an actuator operable for selectively moving the follower to push the driver into frictional engagement with a surface of the flywheel; and a control unit operable for selectively activating the electric motor and the actuator, the control unit including a speed sensor that is configured to sense a rotational speed of an element of the power source and produce a speed signal in response thereto wherein the control unit directly determines a rotational speed of an element in the power source and controls electrical power provided to the motor based on the rotational speed of the element in the power source to cause the flywheel to rotate at a predetermined speed; and wherein the control unit actuates the actuator when a set of actuating criteria has been met. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification