Invention Grant
- Patent Title: Power tool with anti-kickback control system
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Application No.: US15604728Application Date: 2017-05-25
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Publication No.: US10589413B2Publication Date: 2020-03-17
- Inventor: James E. Goble
- Applicant: BLACK & DECKER INC.
- Applicant Address: US CT New Britain
- Assignee: BLACK & DECKER INC.
- Current Assignee: BLACK & DECKER INC.
- Current Assignee Address: US CT New Britain
- Agent Scott B. Markow
- Main IPC: B25F5/00
- IPC: B25F5/00 ; B25F5/02 ; B25B23/147 ; B25B21/00 ; F16P3/00 ; G01C19/08 ; G01P15/00

Abstract:
A power tool includes a housing, a motor received in the housing, an output driven by the motor, and a control system. The control system includes a rotational motion sensor configured to generate a rotational motion signal that corresponds to a rotational motion of the housing about an axis, a current sensor configured to generate a motor current signal that corresponds to an amount of current drawn by the motor, and a control circuit that is configured to receive the rotational motion signal and the motor current signal and to control operation of the motor. The control circuit is configured: (a) to determine, based on the current signal, whether a detected kickback condition is likely to be false; (b) to determine, based upon the rotational motion signal, whether an uncontrolled kickback condition has occurred; and (c) to initiate one or more protective operations upon determining that an uncontrolled kickback condition has occurred and is not likely to be false.
Public/Granted literature
- US20170361449A1 POWER TOOL WITH ANTI-KICKBACK CONTROL SYSTEM Public/Granted day:2017-12-21
Information query