Power tool emergency stop system

Details Power tool emergency stop system Power tool emergency stop system

2008-03-11

2008-03-11

Will, Thomas B. (Department: 3671)

Harvesters

Motorized harvester

With selective control of drive means

C056S01020R, C056S01020E

Reexamination Certificate

active

10988953

ABSTRACT:
A safety apparatus for a tool driven by a motor removes motor power under certain circumstances. The tool includes a housing moveable over a ground surface for mounting the tool, and a ground-engaging member moveable relative to the housing and disposed to follow the ground surface as the housing moves over same. The apparatus further includes a sensor for measuring the relative position of the housing relative to the ground engaging member. Motor control apparatus selectively stops the motor upon the ground-engaging member and the housing reaching a predetermined relative position.

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patent: 6912831 (2005-07-01), Velke et al.
patent: 6918237 (2005-07-01), Shidler et al.

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