Photochromic optically keyed dispenser

Details Photochromic optically keyed dispenser Photochromic optically keyed dispenser

2009-12-18

2011-12-06

Nicolas, Frederick C. (Department: 3754)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S492100, C222S052000, C222S063000, C222S181100, C222S181300, C222S183000, C222S192000, C222S321900, C222S325000, C222S372000

Reexamination Certificate

active

08071933

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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patent: 2008/0308574 (2008-12-01), Ophardt et al.
patent: 2009/0008408 (2009-01-01), Ophardt et al.
patent: 20 2004 013 101 (2004-12-01), None
English Translation of DE 20 2004 013 101, Dec. 2, 2004.

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