Power tool with optical control
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United States of America Patent
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Mar 12, 2013
Grant Date -
Aug 19, 2010
app pub date -
May 3, 2010
filing date -
Aug 16, 2001
priority date (Note) -
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Abstract
An optical control is disclosed which is particularly suitable for application as a switching device, regulating device or sensor device for a power tool. At least two optical waveguides are provided one of which being configured as a transmitting waveguide is coupled to a light source, a second one of which being configured as a receiving waveguide cooperating therewith is coupled to an evaluation circuitry. Both waveguides cooperate with a control element that is movable at least between two positions in which light signals of different magnitude are transmitted from the transmitting waveguide into the receiving waveguide.
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