Photochromic optically keyed dispenser
US8622243B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2013 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | May 23, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47K5/1217
- WIPO fieldMeasurement
- WIPO sectorInstruments
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 comprising 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.