Vapor-emitting device with an active end of use indicator

Details Vapor-emitting device with an active end of use indicator Vapor-emitting device with an active end of use indicator

2006-06-02

2008-10-21

Campbell, Thor S (Department: 3742)

Electric resistance heating devices

Heating devices

Vaporizer

C392S390000, C392S392000

Reexamination Certificate

active

07440683

ABSTRACT:
Vapor-emitting devices according to various embodiments of the invention include active end of use indicators to warn users that it is nearing the time and/or time to replace the vapor-emitting device or a refill for the device. Some embodiments of the vapor-emitting devices include intrusive actuation of the end of use indicator, while other embodiments include non-intrusive actuation of the end of use indicator. The indicators may be visual and/or auditory cues for notifying users it is nearing the time and/or time to replace the vapor-emitting device or a refill for the device.

REFERENCES:
patent: 3780260 (1973-12-01), Elsner
patent: 5546926 (1996-08-01), Lake
patent: 5647052 (1997-07-01), Patel et al.
patent: 6368564 (2002-04-01), Smith
patent: 2004/0005146 (2004-01-01), Wefler

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