Automatic scent dispensing system

Ventilation – Having inlet airway – With means for liquid contact

Reexamination Certificate

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Details

C422S124000, C222S647000

Reexamination Certificate

active

10339889

ABSTRACT:
An automatic scent dispensing system for distributing scents on a user-adjustable schedule without requiring user attention. The system includes a tank system for holding a scent substance that includes a reservoir, and a pump. A dispensing nozzle is mountable on an air duct. A duration timer controls a duration of dispensing of the scent substance, and is adjustable to set the duration of operation of the pump for dispensing the scent substance. An occurrence timer controls a time period between dispensing of scent, and triggers the duration timer after passage of a selected time period. A regular/irregular selector switch controls the actuation of the duration timer, and has an irregular setting for triggering the duration timer at selected events (such as circulating fan operation or an increase in duct air pressure) and a regular setting for triggering the duration timer by the occurrence timer after a selectable time period.

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