CONTROL SYSTEM FOR A FASTENING POWER TOOL
First Claim
1. A power tool comprising:
- a tool housing;
an input unit actuated in response to an operator input;
a motor assembly including a motor housed within the tool housing;
a control unit including a controller programmable to control an operation of the motor and a decoder circuit configured to control a supply of power from a power source to the controller based on a status of the power source and a status of the input unit, the decoder circuit being configured to connect supply of power from the power source to the controller when the power tool is coupled to the power source prior to an engagement of the input unit, but disconnect the supply of power when the power tool is coupled to the power source after the engagement of the input unit.
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Accused Products
Abstract
A fastening power tool such as a nailer is provided including a tool housing, an input unit actuated in response to an operator input, and a motor assembly including a motor housed within the tool housing. A control unit is provided including a controller programmable to control an operation of the motor and a decoder circuit configured to control a supply of power from a power source to the controller based on a status of the power source and a status of the input unit. The decoder circuit is configured to connect supply of power from the power source to the controller when the power tool is coupled to the power source prior to an engagement of the input unit, but disconnect the supply of power when the power tool is coupled to the power source after the engagement of the input unit.
22 Citations
12 Claims
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1. A power tool comprising:
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a tool housing; an input unit actuated in response to an operator input; a motor assembly including a motor housed within the tool housing; a control unit including a controller programmable to control an operation of the motor and a decoder circuit configured to control a supply of power from a power source to the controller based on a status of the power source and a status of the input unit, the decoder circuit being configured to connect supply of power from the power source to the controller when the power tool is coupled to the power source prior to an engagement of the input unit, but disconnect the supply of power when the power tool is coupled to the power source after the engagement of the input unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A power tool comprising:
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a tool housing; a motor assembly including an electric motor housed within the tool housing; a power source; a trigger switch embedded in a handle of the tool housing and engagable by a user to control a supply of power from the power source to the motor assembly; and a locking mechanism engageable by a user to mechanically block the trigger switch from being depressed in a locked position, the locking mechanism also being coupled to a power switch to simultaneously cut off flow of current from the power source to the motor assembly in the locked position. - View Dependent Claims (10, 11, 12)
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Specification