Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2008-12-04
2011-12-13
Bugg, George (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S673000, C340S500000, C340S506000, C340S507000, C700S110000, C700S115000, C702S082000
Reexamination Certificate
active
08077051
ABSTRACT:
Some embodiments for a fault detection apparatus may include one or more monitors to detect at least three operating states of a sensor, such as pass, fail, and inoperative so as to enable a manufacturing facility to differentiate between situations in which a container does not have the appropriate machine-readable label and situations wherein the sensor is actually inoperative. The fail state may be indicative of an object on a conveyor system not matching a predetermined description, identity or characteristic. The pass state may be indicative of an object on a conveyor system matching the predetermined description, identity or characteristic. The inoperative state may be indicative of a sensor output associated with a malfunction in the sensor itself. The fault detection apparatus may also include a fail-to-safe controller configured to detect these operating states.
REFERENCES:
patent: 5841661 (1998-11-01), Buchanan et al.
patent: 2003/0023882 (2003-01-01), Udom
patent: 2003/0176942 (2003-09-01), Sleep et al.
Bugg George
Sensors Incorporated
Yacob Sisay
LandOfFree
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