Photochromic optically keyed dispenser
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United States of America Patent
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Dec 6, 2011
Grant Date -
Jun 17, 2010
app pub date -
Dec 18, 2009
filing date -
Jun 18, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A removable and replaceable keying component which is required for operation of a mechanism and which component includes a waveguide having a photochromic portion. A method of controlling operation of a mechanism, preferably a dispenser, having a removable component having the steps of measuring electromagnetic radiation passing through a waveguide carrying at least in part on the removable component and permitting operation of the mechanism only when the measured electromagnetic radiation corresponds with one or more pre-selected parameters. Preferably, the method involves directing emitted electromagnetic radiation with pre-selected input parameters selected from a plurality of input parameters.
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