Invention Grant
- Patent Title: Redundant overspeed protection for power tools
- Patent Title (中): 电动工具冗余超速保护
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Application No.: US12875354Application Date: 2010-09-03
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Publication No.: US08476853B2Publication Date: 2013-07-02
- Inventor: John C. Vanko , Robert A. Usselman , David Beers
- Applicant: John C. Vanko , Robert A. Usselman , David Beers
- Applicant Address: US DE Newark
- Assignee: Black & Decker Inc.
- Current Assignee: Black & Decker Inc.
- Current Assignee Address: US DE Newark
- Agency: Harness, Dickey & Pierce, P.L.C.
- Main IPC: H02H7/08
- IPC: H02H7/08
Abstract:
An overspeed protection subsystem is provided for a power tool having an electric motor. The overspeed protection subsystem is comprised of: a motor switch coupled in series with the motor; a motor control module interfaced with the motor switch to control switching operation of the motor switch; and an overspeed detection module that determines rotational speed of the motor and disables the power tool when the rotational speed of the motor exceeds a threshold.
Public/Granted literature
- US20110056715A1 REDUNDANT OVERSPEED PROTECTION FOR POWER TOOLS Public/Granted day:2011-03-10
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