Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2006-07-28
2009-10-27
Lee, John R (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C250S227150, C385S012000, C340S545300, C340S550000
Reexamination Certificate
active
07608812
ABSTRACT:
A system and method for detecting radiation from a source in a container is disclosed. A continuous optical fiber path is disposed in a medium which is part of or associated with a container and which encloses the volumetric space of the container. The optical fiber path provides a volumetric mass of optical fiber which is reactive to radiation from a radiation source in the container to cause an irreversible change in the light carrying capacity or other characteristic of the optical fiber. A light source is coupled to one end of the optical fiber path for introducing light having a predetermined characteristic. A light detector is coupled to the other end of the optical path for receiving light from the optical path. A circuit is coupled to the light detector and is operative to detect a total loss of light or a change in the predetermined characteristic of the light and to provide an indication thereof. A continuous wire path can be provided in an alternative embodiment, and which may include e-textiles. In another aspect of the invention, alarm signals from a number of individual detectors can be multiplexed into a gate circuit, such as an OR gate, the output of which provides an alarm signal in response to any one or more of the input signals from the individual detectors.
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Lee John R
Tamperproof Container Licensing Corp.
Weingarten Schurgin, Gagnebin & Lebovici LLP
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